EB-TA0103 - Tripath Technology

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 1

CLASS-T DIGITAL AUDIO AMPLIFIER EVALUATION BOARD USING

DIGITAL POWER PROCESSINGTM TECHNOLOGY EB-TA0103

January 2001, For Rev. 3.3 Board

General Description

The EB-TA0103 evaluation board is based on the TA0103A digital audio power amplifier from Tripath

Technology. This board is designed to provide a simple and straightforward environment for the

evaluation of the Tripath stereo TA0103A amplifier. This board can also be used in a bridged

configuration for high power mono output.

Features

Ø 2 x 250W rms @ 0.1% THD+N, 4Ω

Ø 500W rms bridgeable subwoofer output,

@ 0.1% THD+N, 4Ω

Ø Four N-Channel power MOSFETs

Ø Outputs short circuit protected

Benefits

Ø Quick, easy evaluation and testing of the

TA0103A amplifier

Ø Ready to use in many applications:

Ø 2 channel stereo systems

Ø Powered 2.1 speaker systems

Ø Powered Subwoofers

TECHNICAL INFORMATION

2 EB-TA0103 01.01, Rev. 3.3

OPERATING INSTRUCTIONS

Power Supply Description

There are three external power supplies required to operate this board: Vspos, Vsneg and +5V (see

Figure 1). Vspos and Vsneg power the load and so must each be able to provide half of the desired

output power, plus about 20% for overhead and margin. The TA0103A amplifier also requires a supply,

VN12, that is 12V more positive than Vsneg and tracks Vneg. This evaluation board generates this

VN12 voltage on-board. All input, output and power supply connections are made using tinned wire or

female banana connectors (not shown).

Though not required, the following powering-up sequence is usually adhered to during bench

evaluations: 1

st) +5V, 2nd) Vsneg and 3

rd) Vspos (refer to the Turn-on/off Pop section). The positive and

negative supply voltages do not have to match or track each other, but distortion or clipping levels will be

determined by the lowest (absolute) supply voltage. For applications where VN12 is supplied

separately, make sure this supply tracks the Vsneg as it becomes more negative with respect to ground.

Once power is applied to the evaluation board, the green power light, LED 1, will illuminate. If it does

not, power the unit down and recheck all connections and supplies. If the MUTE jumper is missing, the

LED will not illuminate. To un-mute, short pins 2 and 3 of JP5. Please note that until the Vspos and

Vsneg have powered up and are within the undervoltage and overvoltage limits, the LED will be

illuminated (assuming everything else is properly connected). Once the amplifier is switching, if the

undervoltage or overvoltage limit is violated, LED 1 will turn off until supply voltages are within

specification.

Input Connections

Audio input to the board is located at IN1 and IN2 (see Figures 1 and 2). The input can be a test signal

or music source. Connections are made using tinned wired to IN1, IN2 and Analog Ground, AGND.

Output Connections

There are four female banana connectors on the evaluation board for speaker outputs OUT1, OUT2,

and Power Grounds, GND1 and GND2 (see Figures 1 and 2). The TA0103A can be operated as a two

channel single-ended amplifier, bridged mono output amplifier (see Figure 8) or with a passive crossover

for a 2.1 channel application (refer to Application Note 13). Outputs can be any passive speaker(s) or

test measurement equipment (see Application Note 4 “Parametric Measurements” for more information

on bench testing).

Note: To avoid board damage, the Analog Ground and Power Grounds should be kept separate. They

are internally connected in the TA0103A amplifier.

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 3

Connector Name

Channel

IN1

Channel 1 Input

IN2

Channel 2 Input

OUT1

Cha

nnel 1 Output

OUT2

Channel 2 Output

Turn-on/off Pop

To avoid turn-on pops, bring the mute from a high to a low state after all power supplies have settled. To

avoid turn-off pops, bring the mute from a low to a high state before turning off the supplies. The only

issue with bringing up the 5V last or turning it off first is clicks/pops. If the mute line is properly toggled

(slow turn-on, quick turn-off), then any power up sequence is fine. In practice, the 5V will usually

collapse before Vspos and Vsneg. This is acceptable and will not cause any damage to the TA0103A.

TECHNICAL INFORMATION

4 EB-TA0103 01.01, Rev. 3.3

EB-TA0103 Board

Figure 1

*Please note the Break-Before-Make labels on the PC Board are incorrect and are reversed.

Figure 2

TA0103A

BBM0 BBM1

-V

HEATSINK

MUTE

AGND

IN1

IN2

OUT1

GND1

GND2

OUT2

Tripath Class-T Audio

Amplifier Board

EB-TA0103, Rev. 3.3

LED

OFFSET CH1

OFFSET CH2

MUTE

N-Channel

MOSFETs, M1-M4

Output Transistors

CONNECTIONS

Vspos (+V)

+5V

AGND

DGND

Vsneg (-V)

Output

Connections

Input

Connections

Mute

Jumper

Power

LED

Voltage Offset

Adjust

Break Before

Make Jumpers

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 5

ARCHITECTURE

A block diagram of one channel of the evaluation board is shown in Figure 3. The major functional

blocks of the amplifier are described below.

Figure 3

Input Stage

Figure 4 shows one channel of the Input Stage. The TA0103A amplifier is designed to accept

unbalanced inputs and provide an overall gain of 9.8, or approximately 20 dB. Please note that the input

stage of the TA0103A is biased at approximately 2.5VDC. Therefore, for an input signal centered

around ground (0VDC), the polarity of the coupling capacitor, CIN, shown in Figure 4 is correct.

Figure 4

TA0103A Output

Section

VN12

Out

Input Stage

+5V

Ω

10K

Ω

0.1uF, 50V

Ω

49.9K

Ω

1uF, 6.3V

Input to TA0103A

(DC Bias ~2.5V)

TECHNICAL INFORMATION

6 EB-TA0103 01.01, Rev. 3.3

The gain of each channel of the TA0103A amplifier is set by the value of resistor RIN in Figure 4 (labeled

R8 and R9 on the schematic), according to the following equation:

Av = 538 x 103 / (RIN + 5000)

where RIN is in Ohms

In this design, R

IN is 49.9KΩ, which yields an Av of 9.8 (20 dB). This value is a good compromise

between gain and noise, though reducing R

IN by a factor of two will only increase the noise generated

inside the TA0103A by ~1 dB.

The values of the input capacitor, CIN in Figure 4 (labeled C13 and C16 on the schematic), and the input

resistor, R

IN, set the –3dB point of the input high-pass filter. The frequency of the input high pass pole,

FP, of the –3dB point can then be calculated as follows:

FP = 1/(2π x CIN)(RIN + 5000)

where: CIN = input capacitor value in Farads

RIN = input resistor value in Ohms

Output offset voltages can be nulled by adjusting the 10KΩ potentiometer shown in Figure 4. Once set,

the offset does not typically drift with temperature, so no tracking circuitry is required. Offsets can

typically be set to +/- 25 mV. R43 is used to adjust the offset of CH1, and R42 is used to adjust the

offset of CH2. If a different TA0103A is placed in the EB-TA0103 evaluation board, the offset of each

channel would need to be re-trimmed.

TA0103A Control Circuitry

The 5V supply drives the power light, LED 1, directly to indicate a “good” status. If the LED 1 is off, the

amplifier is in HMUTE (see Figure 5). HMUTE goes high (i.e. LED1 is off), when a fault condition occurs.

If this is caused by an overcurrent condition, the mute pin must be cycled (i.e. low to high to low) to clear

the fault. If the fault was caused by an over- or undervoltage, simply bring the supply rails to within the

OV and UV specifications for the TA0103A (+35V to +60V). Once the supply is within these limits, the

amplifier will automatically reset and LED 1 will illuminate. As stated previously, until the supplies Vspos

and Vsneg are within the specified range, LED 1 will be illuminated. It would be impossible for the

TA0103A to report a supply voltage fault during power up without requiring a specified supply voltage

power sequence that is clearly undesirable.

The MUTE pin is brought out to an external 3-pin header, JP5 (Figure 5). When a jumper is installed

from Pin 4 to ground (by shorting pins 2 and 3 on JP5), the MUTE line is pulled to ground and the

outputs are enabled. Note that if the MUTE jumper is removed, the MUTE pin floats high, the amplifier is

muted and the power LED will not be lit. This is done to remind the user of a possible “jumper off”

condition if there is no output. If the MUTE jumper is driven from the external MUTE connection to Pin 4

and left floating, the outputs are muted.

Figure 5

+5V

LED 1

HMUTE 35

BBM0

BBM1

+5V

JP3

JP4

JP5

MUTE

IN2

IN1

AGND

Pin 4

AGND

MUTE

OCR2

OCR1

R10

R11

ROCR

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 7

The resistors, ROCR in Figure 5 (labeled R10 and R11 in the schematic), set the overcurrent threshold for

the output devices. Note that these are NOT the sense resistors (the overcurrent sense resistors, R

are in the output stage). By adjusting the ROCR resistor values, the threshold at which the amplifier “trips”

can be changed. The range that the overcurrent trip point can be adjusted (by changing R

OCR) is

determined by the value of the sense resistors.

ROCR on this evaluation board is pre-set to 10KΩ for a 4Ω application. For lower impedance applications

(i.e. 4Ω bridged), this board’s overcurrent may trip prematurely. This is indicated by HMUTE going high;

to clear, toggle the mute or cycle the power. To reduce overcurrent sensitivity, decrease the value of

ROCR until the sensitivity meets the desired level. ROCR can be reduced to 0Ω though this may result in

an overcurrent threshold that is so high the amplifier will try to drive a short circuit, possibly damaging the

output FETs.

Finally, the Break-Before-Make (or “BBM”) lines are used to control the “dead time” of the output FETs.

The “dead time” is the period of time between the turn-off of one device and the turn-on of the opposite

device on the same channel. If the two devices are both on at the same time, current “shoots through”

from one supply to the other, bypassing the load altogether. Obviously, this will have a great impact on

the overall efficiency of the amplifier. However, if the dead time is too long, linearity suffers. The

optimum BBM setting will change with different output FETs, different operating voltages, different

layouts and different performance requirements. For this reason, Tripath has provided a means to adjust

the BBM setting among four preset levels by moving jumpers JP3 and JP4 on their 3-pin headers (see

Figure 5).

These settings should be verified over the full temperature and load range of the application to ensure

that any thermal rise of the output FETs and TA0103A does not impact the performance of the amplifier.

This amplifier board is set to 65nS, and the table below shows the BBM values for various settings of the

jumpers (Figure 6).

BBM1 BBM0 Delay

1) 0 0 145nS

2) 0 1 105nS

3) 1 0 65nS

4) 1 1 25nS

Figure 6

"1"

BBM0

JUMPER

BBM1

JUMPER "1"

(board labeled BBM0)

(board labeled BBM1)

TECHNICAL INFORMATION

8 EB-TA0103 01.01, Rev. 3.3

Output Section

The output section includes the gate resistors, FETs, output filters, the previously mentioned

OVERCURRENT sense resistors, clamping diodes, a Zobel, and various bypass capacitors.

Figure 7

The gate resistors (labeled R2, R5, R13, and R21 in the schematic and Figure 7) are used to control

MOSFET switching rise/fall times and thereby minimize voltage overshoots. They also dissipate a

portion of the power resulting from moving the gate charge each time the MOSFET is switched. If RG is

too small, excessive heat can be generated in the driver. Large gate resistors lead to slower gate

transitions resulting in longer rise/fall times and thus requiring a larger BBM setting. Tripath

recommends using an R

G of 10Ω when the gate charge (Qg) of the output FET is less than 70nC and

5.6Ω when the Qg is greater than 70nC.

The output FETs, M1-M4, provide the switching function required of a Class-T design. They are driven

directly by the TA0103A through the gate resistors. The devices used on the evaluation board are ST

STW38NB20 MOSFETs. The TA0103A data sheet contains information on output FET selection as well

as Tripath application notes “FETs – Selection and Efficiency” and “Designing with Switching Amplifiers

for Performance and Reliability”.

The output filters L1/C4 and L2/C21 are the low-pass filters that recover the analog audio signal. One of

the benefits of the Class-T design is the ability to use output filters with relatively high cutoff frequencies.

This greatly reduces the speaker interactions that can occur with the use of lower-frequency filters

common in Class-D designs. Also, the higher-frequency operation means that the filter can be of a

lower order (simpler and less costly).

The OEM may benefit from some experimentation in the filter design, but the values provided in the

reference design, 11.3uH and 0.22uF, provide excellent results for most loads between 4Ω and 8Ω.

R2/13

5.6Ω

R5/21

5.6Ω

M2/4

HOCOM

FDBK

M1/3

C2/18

0.1uF, 100v C1/19

0.1uF, 100v

C4/21

0.22uF, 100v

C12/27

0.1uF, 100v C9/25

0.1uF, 100v C10/26

100uF, 100V

R6/22 0.01Ω

R1/12 0.01Ω

L1/2

11.3uH

100uF, 100v

C5/22

0.1uF, 100v

R3/14 33Ω

D2/4

D1/3

OCSH+OCSH-

OCSL-OCSL+

VSNEG

OUT

VSPOS

R4/17 1KΩC8/20

50pF, 100v

C6/7, NS

LOCOM

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 9

As important as the values themselves, the material used in the core is important to the performance of

the filter. Core materials that saturate too easily will not provide acceptable distortion or efficiency

figures. Tripath recommends a low-mu (10) type 2 iron powder core.

The clamping diodes D1-D4 are required to limit the reverse voltages seen by the output FETs as a

result of normal operation. The diodes should be mounted with short leads, as close as possible to the

FET. Only Schottky diodes should be used here due to their very low forward voltage drop and fast

switching. The diodes should have a forward current rating of at least one Ampere.

The Zobel circuits R3/C5 and R14/C22 are there in case an amplifier is powered up with no load

attached. The Q of the LC output filter, with no load attached, rises quickly out to 80kHz. Resonant

currents in the filter and ringing on the output could reduce the reliability of the amplifier. The Zobel

eliminates these problems by reducing the Q of the network significantly above 50kHz. Modifying the LC

output filter should not require a recalculation of the Zobel values.

The bypass capacitors C12/C27 are critical to the reduction of ringing on the outputs of the FETs. These

parts are placed as closely as possible to the leads of the FETs, and the leads of the capacitors

themselves are as short as practical. Their values will not change with different output FETs.

TECHNICAL INFORMATION

10 EB-TA0103 01.01, Rev. 3.3

Connection Diagram for Bridge Mode Operation

The amplifier is connected to the power supplies and load as shown in Figure 8. Note that an inverter

has been added in front of one of the channel inputs (i.e. channel 2). The main reason for processing

the channels out of phase is to avoid potential problems with switching power supplies, but it also

simplifies the connections for bridged-mode operation. For bridged operation, simply connect the “-“

terminal to the output of the inverted channel (i.e. channel 1) and the “+” terminal to the output of the

non-inverted channel with respect to the input signal (i.e. channel 2). As stated before, the TA0103A is

an inverting amplifier.

*Please note the Break-Before-Make labels on the PC Board are incorrect and are reversed.

Figure 8

45V

+ -

45V

+ - 5V

+ -

RCA

- +

Bridged

Subwoofer

TA0103A

BBM0 BBM1

-V

MUTE

AGND

IN1

IN2

Tripath Class-T Audio

Amplifier Board

EB-TA0103, Rev. 3.3

LED

OFFSET CH1

OFFSET CH2

MUTE

N-Channel

MOSFETs, M1-M4 M1

OUT1

GND1

GND2

OUT2

HEATSINK

AGND

Audio

Input

TECHNICAL INFORMATION

EB-TA0103 01.01, Rev. 3.3 11

VN12 Bias Requirement

The VN12 circuit (Figure 9) is used to provide the voltage rail for the low side FET drivers on the

TA0103A. This supply must track the Vsneg rail, and so, for simplicity, this supply is included on this

amplifier board (the corresponding +12V “floating” supply is generated internal to the TA0103A amplifier

and so is not shown). The VN12 circuit uses a National LM2594HVN-12 “simple switcher” voltage

regulator for all control. A few passive components complete the design. Tripath does not anticipate

that there will be any reason to modify the operation of this circuit. Should the OEM wish to do so,

however, reference data for the LM2594 is available at www.national.com/pf/LM/LM2594.

Figure 9

DOCUMENTATION

Schematics and layout in software or paper form can be provided upon request.

CONTACT INFORMATION

For more information on Tripath products, visit our web site at: www.tripath.com

TRIPATH TECHNOLOGY, INC.

3900 Freedom Circle, Suite 200

Santa Clara, California 95054

408-567-3000

LM2594

VSNEG

VN12

1000uF

100uH

10uF

JP6

C29 D5

C30

+VIN

GND OUT

ON/OFF

D D

C C

B B

A A

From

Preamp

Board

GND1

EB-TA0103

3.3F3

EB-TA0103 2CH AUDIO AMPLIFIER BOARD

2 3Tuesday, January 16, 2001

Title

Size Document Number Rev

Date: Sheet of

VP75B

OUT2

COM1

COM2

VP75A

OUT1

OUT2

VSPOS

VSNEG

VN12REF

V5 HMUTE

GPWR

Pin3V5

VSNEG

VSPOS

Pin3V5

VSPOS

VSNEG

AGND

VSNEG

VSPOS

VN12REF

VSPOS

VSNEG

VN12REF

GND_2

GND_1

GND_1 GND_2AGND

AGND AGND

AGND

Pin3V5

V5 V5

R21 5.6

47PF

500V

10%

R13 5.6

FB1

EXC-ELSA35

FB2

EXC-ELSA35

C14

100PF

500V

10%

C24

0.1UF

50V

JP2

2-pin Header

0.100"

1 2

R12

0.01

MUR120

200V

MUR120

200V

R50

LED1

C18

0.1UF

100V

JP7

R22

0.01

C21

0.22UF

100V

11.3UH

10A

10% R14

C22

0.1UF

100V

C27

0.1UF

100V

49.9K

0.25W

C12

0.1UF

100V

R17

C20

47PF

500V

10%

R15

0.25W

C26

100UF

100V

20%

C25

0.1UF

100V

49.9K

0.25W

C11

0.1UF

50V

R20

0.25W

JP3

3-pin Header

0.100"

C19

0.1UF

100V

R11

20K

0.25W

R10

20K

0.25W

JP4

3-pin Header

0.100"

R43

10K

Single Turn

1 3

R42

10K

Single Turn

1 3

C16

1UF

50V

20%

C13

1UF

50V

20%

J1 4-Terminals

10K

0.25W

C17

100PF

500V

10%

C23

0.1UF

50V

R19

0.25W

TA0103

AGND

OVERLOAD

MUTE

IN2

IN1

BBM0

BBM1

GNDKELVIN1

OCR2

OCR1

GNDKELVIN2

NSNS1N

NSNS1P

PSNS1N

PSNS1P

COM1

FDBKN1

VN12REF

LO1

BR1

HO1

VSPOS

VSNEG

HO2

BR2

LO2

PGND

FDBKN2

COM2

NSNS2P

NSNS2N

PSNS2N

PSNS2P

HMUTE

TEST1

TEST2

TEST3

C_GND

R16

0.25W

JP5

3-pin Header

0.100"

C40

1000PF

500V

10%

STW38NB20

C15

1000PF

500V

10%

STW38NB20

5.6

JP1

2-pin Header

0.100"

1 2

0.1UF

100V

11.3UH

10A

10%

MUR120

200V

MUR120

200V

5.6

C10

100UF

100V

20%

0.01

0.1UF

100V

0.1UF

100V

0.01

0.1UF

100V

0.22UF

100V

100UF

100V

20%

D D

C C

B B

A A

This ground should be located

as close to chassis wall as

possible.

Tie pins 1, 2, 3 to VSNEG

(pins 5, 6).

EB-TA0103 3.3F3

EB-TA0103 2CH AUDIO AMPLIFIER BOARD

3 3Tuesday, January 16, 2001

Title

Size Document Number Rev

Date: Sheet of

OUT1

OUT2

HMUTE

VN12REF

VSNEG

VSPOS

GPWR

GND_1

GND_2

VSNEG

R28 100K

0.25W

R27 20K

0.25W

C34

22UF

100V

20%

C31

1UF

50V

20%

R29 100K

0.25W

C35

22UF

100V

20%

2N3906

RELAY DPDT

2N7000

R26

0.25W

L3 330UH

0.5A

10%

2N7000

R41

0.25W

JP6

24 AWG WIRE

1UH

10A

10%

1UH

10A

10%

C32

C33

C30

82UF

25V

20%

LM2594HVN-12 8

OUT

GND

NOT ON/OFF

+VIN

4-Terminals

C38

1000PF

500V

10%

C37

1000PF

500V

10%

C39

1000PF

500V

10%

C36

1000PF

500V

10%

11DQ09

90V

R61

C29

10UF

63V

20%

6-Terminals

Bill Of Materials for EB-TA0103

Revision 7

P/N Qty. Reference Description Value Rating Tolerance Manufacturer Mfg. Part # Vendor Vendor Part #

1050-00011-0AB 1PCB Assembly, Tested EB-TA0103

2040-00011-0AB 1PCB Assembly, Untested EB-TA0103

3302-00001-000 10 C1,C2,C5,C9,C12,C18,C19,C

22,C25,C27 Stack Metallized Film Caps 0.1UF 100V 5% Panasonic ECQ-V1104JM Digi-Key P4725-ND

4301-00005-000 3C3,C10,C26 Radial Lead Aluminum Electrolytic Caps 100UF 100V 20% Panasonic ECA-2AHG101 Digi-Key P5597-ND

5302-00003-000 2C21,C4 Stack Metallized Film Caps 0.22UF 100V 5% Panasonic ECQ-V1224JM Digi-Key P4729-ND

6300-00008-000 2C8,C20 Ceramic Disk Caps 47PF 500V 10% Panasonic E4008A-ND Digi-Key ECC-D2H470K5

7302-00007-000 3C11,C23,C24 Stack Metallized Film Caps 0.1UF 50V 5% Panasonic ECQ-V1H104JL Digi-Key P4525-ND

8301-00017-000 3C13,C16,C31 Radial Lead Aluminum Electrolytic Caps 1UF 50V 20% Panasonic ECA-1HM010 Digi-Key P5174-ND

9300-00019-000 2C14,C17 Ceramic Disk Caps 100PF 500V 10% Panasonic ECK-D2H101KB5 Digi-Key P4100A-ND

10 300-00020-000 6C15,C36,C37,C38,C39,C40 Ceramic Disk Caps 1000PF 500V 10% Panasonic ECK-D2H102KB5 Digi-Key P4112A-ND

11 301-00006-000 1C29 Radial Lead Aluminum Electrolytic Caps 10UF 63V 20% Panasonic ECA-1JM100 Digi-Key P5189-ND

12 301-00018-000 1C30 Radial Lead Aluminum Electrolytic Caps 82UF 25V 20% Panasonic ECA-1EFQ820 Digi-Key P5697-ND

13 301-00019-000 2C34,C35 Radial Lead Aluminum Electrolytic Caps 22UF 100V 20% Panasonic ECA-2AHG220 Digi-Key P5594-ND

14 400-00005-000 4D1,D2,D3,D4 Fast Recovery Diode MUR120 200V Motorola MUR120

15 400-00013-000 1D5 Schottky Diode 11DQ09 90V IR 11DQ09 Digi-Key 11DQ09-ND

16 215-00001-000 2FB1,FB2 Ferrite Beads EXC-ELSA35 EXC-ELSA35

17 800-00003-000 2JP2,JP1 Header Strips 2-pin Header, 0.100" Phyco 2100-1X2SF1

18 800-00016-000 3JP3,JP4,JP5 Header Strips 3-pin Header, 0.100" Phyco 2100-1X3SF1

19 1JP6 24 AWG WIRE

20 802-00001-000 1K1 Potter & Brumfield RELAY DPDT 8A/5V Siemens RTE24005

21 700-00001-000 2L2,L1 Iron Powder, 29 Turns of 16 AWG 11.3UH 10A 10% Amidon T-106-2

AMIDON

AMI-10231

22 700-00002-000 1 L3 Inductor 330UH 0.5A 10% ISI RL622-331K

23 700-00003-000 2L5,L4 Inductor 1UH 10A 10% ISI RL622-1R0M

24 503-00004-000 4M1,M2,M3,M4 N-Ch Mosfet STW38NB20 200V/38A SGS-Thomson STW38NB20

25 502-00001-000 4Q2,Q3,Q4,Q6 N-Ch Mosfet 2N7000 0.5W NSC 2N7000

26 500-00001-000 1Q5 P-Ch BJT 2N3906 0.5W NSC 2N3906

27 206-00001-000 4R1,R6,R12,R22 Resistor 0.01 1W 1% Well-Mag MR0100805

28 206-00003-000 4R2,R5,R13,R21 Resistor 5.6 1W 5% Panasonic Digi-Key P5.6W-1TR-ND

29 207-00002-000 2R14,R3 Resistor 33 2W 5% Panasonic Digi-Key P33W-2TR-ND

30 206-00004-000 2R4,R17 Resistor 1K 1W 5% Panasonic Digi-Key P1.0KW-1TR-ND

31 202-00006-000 2R7 Resistor 10K 0.25W 5% Yageo Digi-Key 10KQTR-ND

32 202-00007-000 2R8,R9 Resistor 49.9K 0.25W 1% Yageo Digi-Key 49.9XTR-ND

33 202-00008-000 6R15,R16,R19,R20,R26,R41 Resistor 1M 0.25W 5% Yageo Digi-Key 1MQTR-ND

34 202-00002-000 1R10,R11,R27 Resistor 20K 0.25W 5% Yageo Digi-Key 20KQTR-ND

35 202-00005-000 2R28,R29 Resistor 100K 0.25W 5% Yageo Digi-Key 100KQTR-ND

36 204-00008-000 2R43,R42 Resistor 10K-Single Turn Bourns 3306P-1103 Digi-Key 3306P-103-ND

37 050-00005-3AB 1U1 Audio Amplifier TA0103 Tripath TA0103

38 601-00003-000 1U2 12V Switcher LM2594HVN-12 NSC LM2594HVN-12

39 800-00017-000 2U1 1 X 11 female socket Phyco 4150-1X11 SF1

40 800-00018-000 2U1 1 X 8 female socket Phyco 4150-1X8 SF1

41 850-00003-000 1Cable Ties 8" T&B 10400

42 180-00003-000 1Printed Circuit Board Bay Area Ckt TA010X_REV 3.3

43 850-00004-000 4Aluminum Stand-Offs 4-40 x 1/2" Olander 4C50RF4U

44 850-00005-000 4Screws for Stand-Offs 4-40 x 1/4" Olander 4C25PPMS

45 850-00006-000 4Alumina Oxide Spacers Thermalloy 4170 Bisco Industries

46 850-00007-000 1Heatsink ACK Tech/ CCI CS8157-18070

47 850-00008-000 2Small, Clamp Bars Abacus 100-3900-002

48 850-00009-000 2Screws for Clamp Bars 4-40 x 1/2 Olander 4C75PPMS

49 850-00010-000 1Red Wire 6", 24 AWG Wire

50 850-00013-000 1Red Wire 6", 18 AWG Wire

51 850-00013-000 1Red Wire 12", 18 AWG Wire

52 850-00011-000 1Black Wire 6", 24 AWG Wire

53 850-00014-000 1Black Wire 6", 18 AWG Wire

54 850-00014-000 1Black Wire 12", 18 AWG Wire

55 850-00012-000 1White Wire 6", 24 AWG Wire

56 850-00015-000 1White Wire 6", 18 AWG Wire

57 850-00016-000 1Yellow Wire 12", 18 AWG Wire

58 850-00017-000 1Blue Wire 6", 18 AWG Wire

59 850-00017-000 1Blue Wire 12", 18 AWG Wire

60 850-00018-000 1Orange Wire 12", 18 AWG Wire

61 800-00009-000 2Female Banana Jack w/ screws Red Johnson Comp. 108-0901-001 Digi-Key J151-ND

62 800-00010-000 2Female Banana Jack w/ screws Black Johnson Comp. 108-0903-001 Digi-Key J152-ND

63 800-00012-000 2Female Banana Jack w/ screws Blue Johnson Comp. 108-0910-001 Digi-Key J155-ND

64 800-00011-000 1Female Banana Jack w/ screws White Johnson Comp. 108-0901-001 Digi-Key J150-ND

65 800-00014-000 1Female Banana Jack w/ screws Yellow Johnson Comp. 108-0907-001 Digi-Key J154-ND

66 800-00013-000 1Female Banana Jack w/ screws Orange Johnson Comp. 108-0906-001 Digi-Key J356-ND

67 10 LED1,C6,JP7,C7,C32,C33,R5

0, R61 , D6, D7 No Stuff

68 850-00019-000 38-32 x 3/8 Phil Flat, Baseplate screw, SS Orlander

69 850-00020-000 44-40 x 1/4 Phil Flat, Baseplate screw, SS Orlander

70 850-00021-000 1Baseplate, Aluminum Abacus Mfg.

71 950-00003-000 1Shipping box w/ foam

72 950-00004-000 110 x 12 Anti-static bag

73 800-00019-000 5JP1, 2, 3, 4, 5 2 pin header, jumper jumper

Note #1 (J1): Use a 24AWG (6" long) stripped at end.

Terminal 1: Red Wire

Terminal 2: Black Wire

Terminal 3: White Wire

Terminal 4: No Wire

Note #2 (J2): Use a 18AWG (12" long) with a female banana jack at the end.

Terminal 1: Yellow Wire

Terminal 2: Red Wire

Terminal 3: Black Wire

Terminal 4: Blue Wire

Terminal 5: No wire

Terminal 6: Orange Wire

Note #3 (J3): Use a 18AWG (6" long) with a female banana jack at the end.

Terminal 1: Red Wire

Terminal 2: Black Wire

Terminal 3: Blue Wire

Terminal 4: White Wire