OPA337, OPA2337, OPA338, OPA2338 - Burr-Brown / Texas Instruments

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

PDS-1410C

FEATURES

●

Micro

SIZE PACKAGES:

SOT-23-5

SOT-23-8

● SINGLE-SUPPLY OPERATION

● RAIL-TO-RAIL OUTPUT SWING

● FET-INPUT: IB = 10pA max

● HIGH SPEED:

OPA337: 3MHz, 1.2V/µs (G = 1)

OPA338: 12.5MHz, 4.6V/µs (G = 5)

● OPERATION FROM 2.5V to 5.5V

● HIGH OPEN-LOOP GAIN: 120dB

● LOW QUIESCENT CURRENT: 525µA/amp

● SINGLE AND DUAL VERSIONS

DESCRIPTION

The OPA337 series and OPA338 series rail-to-rail output

CMOS operational amplifiers are designed for low cost and

miniature applications. Packaged in the new SOT-23-8, the

OPA2337EA and OPA2338EA are Burr-Brown’s smallest

dual op amps. At only 1/4 the size of a conventional SO-8

surface mount, they are ideal for space-sensitive applica-

tions.

Performance is not sacrificed for size. Utilizing advanced

CMOS technology, OPA337 and OPA338 op amps pro-

vide low bias current, high-speed operation, high open-

loop gain, and rail-to-rail output swing. They operate on a

single supply with operation as low as 2.5V while drawing

only 525µA quiescent current. In addition, the input com-

mon-mode voltage range includes ground—ideal for single-

supply operations.

The OPA337 series is unity-gain stable. The OPA338

series is optimized for gains greater than or equal to five.

They are easy to use and free from phase inversion and

overload problems found in some other op amps. Excellent

performance is maintained as the amplifiers swing to their

specified limits. The dual versions feature completely

independent circuitry for lowest crosstalk and freedom

from interaction, even when overdriven or overloaded.

The OPA337 packages are the tiny SOT-23-5 surface

mount, SO-8 surface mount, and 8-pin DIP packages.

In addition to the miniature SOT-23-8 surface-mount

package, the OPA2337 is available in SO-8 surface-

mount and 8-pin DIP packages. The OPA338 packages

are the SOT-23-5 and SO-8 surface mounts. The OPA2338

packages are the SOT-23-8 and SO-8 surface mounts.

Micro

SIZE, Single-Supply

CMOS OPERATIONAL AMPLIFIERS

Micro

Amplifier

™ Series

APPLICATIONS

●BATTERY-POWERED INSTRUMENTS

●PHOTODIODE PRE-AMPS

● MEDICAL INSTRUMENTS

● TEST EQUIPMENT

●AUDIO SYSTEMS

●DRIVING ADCs

●CONSUMER PRODUCTS

V+

Out B

–In B

+In B

Out A

–In A

+In A

V–

OPA2337, OPA2338

8-Pin DIP

(1)

, SO-8, SOT-23-8

V+

Output

–In

+In

V–

OPA337, OPA338

8-Pin DIP

(1)

, SO-8

V+

–In

Out

V–

+In

OPA337, OPA338

SOT-23-5

OPA337

OPA2337

OPA2338

NOTE: (1) DIP versions for OPA337, OPA2337 only.

SPICE Model available at www.burr.com

For most current data sheet and other product

information, visit www.burr-brown.com

OPA337

OPA2337

OPA338

OPA2338

OPA337, OPA2337

OPA338, OPA2338

SPECIFICATIONS: VS = 2.7V to 5.5V

At TA = +25°C, and RL = 25kΩ connected to VS/2, unless otherwise noted.

Boldface limits apply over the specified temperature range, –40°C to +85°C, VS = 5V.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes

no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change

without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant

any BURR-BROWN product for use in life support devices and/or systems.

OPA337NA, UA, PA

OPA2337EA, UA, PA

OPA338NA, UA

OPA2338EA, UA

PARAMETER CONDITION MIN TYP(1) MAX UNITS

OFFSET VOLTAGE

Input Offset Voltage VOS ±0.5 ±3mV

TA = –40°C to +85°C±3.5 mV

vs Temperature dVOS/dT ±2µV/°C

vs Power Supply Rejection Ratio PSRR VS = 2.7V to 5.5V 25 125 µV/V

TA = –40°C to +85°CVS = 2.7V to 5.5V 125 µV/V

Channel Separation (dual versions) dc 0.3 µV/V

INPUT BIAS CURRENT

Input Bias Current IB±0.2 ±10 pA

TA = –40°C to +85°CSee Typical Curve

Input Offset Current IOS ±0.2 ±10 pA

NOISE

Input Voltage Noise, f = 0.1Hz to 10Hz 6µVp-p

Input Voltage Noise Density, f = 1kHz en26 nV/√Hz

Current Noise Density, f = 1kHz in0.6 fA/√Hz

INPUT VOLTAGE RANGE

Common-Mode Voltage Range VCM TA = –40°C to +85°C –0.2 (V+) – 1.2 V

Common-Mode Rejection Ratio CMRR –0.2V < VCM < (V+) – 1.2V 74 90 dB

TA = –40°C to +85°C–0.2V < VCM < (V+) – 1.2V 74 dB

INPUT IMPEDANCE

Differential 1013 || 2 Ω || pF

Common-Mode 1013 || 4 Ω || pF

OPEN-LOOP GAIN

Open-Loop Voltage Gain AOL RL = 25kΩ, 125mV < VO < (V+) – 125mV 100 120 dB

TA = –40°C to +85°CRL = 25kΩ, 125mV < VO < (V+) – 125mV 100 dB

RL = 5kΩ, 500mV < VO < (V+) – 500mV 100 114 dB

TA = –40°C to +85°CRL = 5kΩ, 500mV < VO < (V+) – 500mV 100 dB

OPA337 FREQUENCY RESPONSE

Gain-Bandwidth Product GBW VS = 5V, G = 1 3 MHz

Slew Rate SR VS = 5V, G = 1 1.2 V/µs

Settling Time: 0.1% VS = 5V, 2V Step, CL = 100pF, G = 1 2 µs

0.01% VS = 5V, 2V Step, CL = 100pF, G = 1 2.5 µs

Overload Recovery Time VIN • G = VS2µs

Total Harmonic Distortion + Noise THD+N VS = 5V, VO = 3Vp-p, G = 1, f = 1kHz 0.001 %

OPA338 FREQUENCY RESPONSE

Gain-Bandwidth Product GBW VS = 5V, G = 5 12.5 MHz

Slew Rate SR VS = 5V, G = 5 4.6 V/µs

Settling Time: 0.1% VS = 5V, 2V Step, CL = 100pF, G = 5 1.4 µs

0.01% VS = 5V, 2V Step, CL = 100pF, G = 5 1.9 µs

Overload Recovery Time VIN • G = VS0.5 µs

Total Harmonic Distortion + Noise THD+N VS = 5V, VO = 3Vp-p, G = 5, f = 1kHz 0.0035 %

OUTPUT

Voltage Output Swing from Rail(2) RL = 25kΩ, AOL ≥ 100dB 40 125 mV

TA = –40°C to +85°CRL = 25kΩ, AOL ≥ 100dB 125 mV

RL = 5kΩ, AOL ≥ 100dB 150 500 mV

TA = –40°C to +85°CRL = 5kΩ, AOL ≥ 100dB 500 mV

Short-Circuit Current ISC ±9mA

Capacitive Load Drive CLOAD See Typical Curve

POWER SUPPLY

Specified Voltage Range VSTA = –40°C to +85°C 2.7 5.5 V

Minimum Operating Voltage 2.5 V

Quiescent Current (per amplifier) IQIO = 0 0.525 1 mA

TA = –40°C to +85°CIO = 0 1.2 mA

OPA337, OPA2337

OPA338, OPA2338

PACKAGE SPECIFIED

DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

PRODUCT DESCRIPTION PACKAGE NUMBER(1) RANGE MARKING NUMBER(2) MEDIA

OPA337 Series

OPA337NA Single, G = 1 Stable 5-Lead SOT-23-5 331 –40°C to +85°C C37 OPA337NA/250 Tape and Reel

"" """"OPA337NA/3K Tape and Reel

OPA337PA Single, G = 1 Stable 8-Pin DIP 006 –40°C to +85°C OPA337PA OPA337PA Rails

OPA337UA Single, G = 1 Stable SO-8 Surface Mount 182 –40°C to +85°C OPA337UA OPA337UA Rails

"" """"OPA337UA/2K5 Tape and Reel

OPA2337EA Dual, G = 1 Stable 8-Lead SOT-23-8 348 –40°C to +85°C A7 OPA2337EA/250 Tape and Reel

"" """"OPA2337EA/3K Tape and Reel

OPA2337PA Dual, G = 1 Stable 8-Pin DIP 006 –40°C to +85°C OPA2337PA OPA2337PA Rails

OPA2337UA Dual, G = 1 Stable SO-8 Surface Mount 182 –40°C to +85°C OPA2337UA OPA2337UA Rails

"" """"OPA2337UA/2K5 Tape and Reel

OPA338 Series

OPA338NA Single, G ≥ 5 Stable 5-Lead SOT-23-5 331 –40°C to +85°C A38 OPA338NA/250 Tape and Reel

"" """"OPA338NA/3K Tape and Reel

OPA338UA Single, G ≥ 5 Stable SO-8 Surface Mount 182 –40°C to +85°C OPA338UA OPA338UA Rails

"" """"OPA338UA/2K5 Tape and Reel

OPA2338EA Dual, G ≥ 5 Stable 8-Lead SOT-23-8 348 –40°C to +85°C A8 OPA2338EA/250 Tape and Reel

"" """"OPA2338EA/3K Tape and Reel

OPA2338UA Dual, G ≥ 5 Stable SO-8 Surface Mount 182 –40°C to +85°C OPA2338UA OPA2338UA Rails

"" """"OPA2338UA/2K5 Tape and Reel

NOTES: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. (2) Models with a slash (/) are

available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “OPA2337UA/2K5” will get a single

2500-piece Tape and Reel. For detailed Tape and Reel mechanical information, refer to Appendix B of Burr-Brown IC Data Book.

SPECIFICATIONS: VS = 2.7V to 5.5V (CONT)

At TA = +25°C, and RL = 25kΩ connected to VS/2, unless otherwise noted.

Boldface limits apply over the specified temperature range, –40°C to +85°C, VS = 5V.

OPA337NA, UA, PA

OPA2337EA, UA, PA

OPA338NA, UA

OPA2338EA, UA

PARAMETER CONDITION MIN TYP MAX UNITS

TEMPERATURE RANGE

Specified Range –40 +85 °C

Operating Range –55 +125 °C

Storage Range –55 +125 °C

Thermal Resistance

SOT-25-5 Surface Mount 200 °C/W

SOT-23-8 Surface Mount 200 °C/W

SO-8 Surface Mount 150 °C/W

8-Pin DIP 100 °C/W

NOTES: (1) VS = 5V. (2) Output voltage swings are measured between the output and negative and positive power supply rails.

ELECTROSTATIC

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown

recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling

and installation procedures can cause damage.

ESD damage can range from subtle performance degrada-

tion to complete device failure. Precision integrated circuits

may be more susceptible to damage because very small

parametric changes could cause the device not to meet its

published specifications.

Supply Voltage ................................................................................... 5.5V

Input Voltage(2) ..................................................(V–) –0.5V to (V+) +0.5V

Input Current(2) ................................................................................. 10mA

Output Short Circuit(3) .............................................................. Continuous

Operating Temperature ..................................................–55°C to +125°C

Storage Temperature .....................................................–55°C to +125°C

Junction Temperature...................................................................... 150°C

Lead Temperature (soldering, 10s)................................................. 300°C

NOTES: (1) Stresses above these ratings may cause permanent damage.

Exposure to absolute maximum ratings for extended periods may degrade

device reliability. (2) Input signal voltage is limited by internal diodes

connected to power supplies. See text. (3) Short circuit to ground, one

amplifier per package.

ABSOLUTE MAXIMUM RATINGS(1)

PACKAGE/ORDERING INFORMATION

OPA337, OPA2337

OPA338, OPA2338

TYPICAL PERFORMANCE CURVES

At TA = +25°C, VS = +5V, and RL = 25kΩ connected to VS/2, unless otherwise noted.

OPEN-LOOP GAIN/PHASE vs FREQUENCY

Frequency (Hz)

Open-Loop Gain (dB)

Phase (°)

160

140

120

100

–20 1 10 100 10k1k 100k 10M1M

OPA337

OPA338

–45

–90

–135

–180

CHANNEL SEPARATION vs FREQUENCY

Frequency (Hz)

Channel Separation (dB)

140

130

120

110

100

80100 10k1k 1M100k

Dual Versions

INPUT BIAS CURRENT

vs INPUT COMMON-MODE VOLTAGE

Common-Mode Voltage (V)

Input Bias Current (pA)

0.5

0.4

0.3

0.2

0.1

–0.1 –1 210543

INPUT BIAS CURRENT vs TEMPERATURE

Temperature (°C)

Input Bias Current (pA)

100

0.1

0.01–75 –50 –25 0 25 50 75 100 125

POWER SUPPLY REJECTION RATIO AND

COMMON-MODE REJECTION RATIO vs FREQUENCY

Frequency (Hz)

PSRR, CMRR (dB)

100

10 1 10 100 1k 10k 100k 1M 10M

+PSRR

–PSRR

CMRR

INPUT VOLTAGE AND CURRENT NOISE

SPECTRAL DENSITY vs FREQUENCY

Frequency (Hz)

Voltage Noise (nV√Hz)

100

0.1

100

0.1

1 10 100 1k 10k 100k 1M

Current Noise (fA√Hz)

Voltage Noise

Current Noise

OPA337, OPA2337

OPA338, OPA2338

TYPICAL PERFORMANCE CURVES (CONT)

At TA = +25°C, VS = +5V, and RL = 25kΩ connected to VS/2, unless otherwise noted.

MAXIMUM OUTPUT VOLTAGE vs FREQUENCY

Frequency (Hz)

Output Voltage (Vp-p)

010k 100k 100M1M 10M

Maximum output

voltage without slew

rate-induced distortion.

OPA337

OPA338

TOTAL HARMONIC DISTORTION + NOISE

vs FREQUENCY

Frequency (Hz)

THD+N (%)

0.1

0.01

0.001

0.0001 20 100 1k 10k 20k

G = +10, R

= 5kΩ, 25kΩ

G = +5, R

= 5kΩ, 25kΩ

= 25kΩ

= 5kΩ

G = +1

= 3Vp-p

OPA337

OPA338

, CMRR, PSRR vs TEMPERATURE

Temperature (°C)

, CMRR (dB)

PSRR (dB)

140

130

120

110

100

130

120

110

100

–75 –50 –25 0 25 50 75 100 125

PSRR

CMRR

QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT

vs TEMPERATURE

Temperature (°C)

Quiescent Current (µA)

600

550

500

450

400

350

300

Short-Circuit Current (mA)

–75 –50 –25 0 25 50 75 100 125

–ISC

+ISC

OUTPUT VOLTAGE SWING vs OUTPUT CURRENT

Output Current (mA)

Output Voltage (V)

2.5

2.0

1.5

1.0

0.5

–0.5

–1.0

–1.5

–2.0

–2.5 0±3±2±1±6±7±8±5±4

125°C

Sinking

Sourcing

25°C

= ±2.5V

Tied to Ground

–55°C

QUIESCENT AND SHORT-CIRCUIT CURRENT

vs SUPPLY VOLTAGE

Supply Voltage (V)

Quiescent Current (µA)

Short-Circuit Current (mA)

700

650

600

550

500

450

400

±12

±10

±8

±6

±4

±2

2.5 4.03.53.0 5.55.04.5

–I

OPA337, OPA2337

OPA338, OPA2338

TYPICAL PERFORMANCE CURVES (CONT)

At TA = +25°C, VS = +5V, and RL = 25kΩ connected to VS/2, unless otherwise noted.

SMALL-SIGNAL STEP RESPONSE

CL = 100pF, VS = +5V

1µs/div

50mV/div

LARGE-SIGNAL STEP RESPONSE

CL = 100pF, VS = +5V

2µs/div

500mV/div

OFFSET VOLTAGE DRIFT

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage Drift (µV/°C)

Typical distribution

of packaged units

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

OFFSET VOLTAGE

PRODUCTION DISTRIBUTION

Percent of Amplifiers (%)

Offset Voltage (mV)

–3.0

–2.5

–2.0

–1.5

–1.0

–0.5

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Typical distribution

of packaged units.

OPA337

G = 1

OPA338

G = 5

OPA337

G = 1

OPA338

G = 5

SETTLING TIME vs CLOSED-LOOP GAIN

Closed-Loop Gain (V/V)

Settling Time (µs)

100

111k10 100

0.01%

OPA337

0.1%

OPA338

SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE

Load Capacitance (pF)

Overshoot (%)

010 10k100 1k

OPA337

(G = ±1)

OPA337

(G = ±10)

OPA338

(G = ±50)

OPA338

(G = ±5)

OPA337, OPA2337

OPA338, OPA2338

APPLICATIONS INFORMATION

The OPA337 series and OPA338 series are fabricated on a

state-of-the-art CMOS process. The OPA337 series is unity-

gain stable. The OPA338 series is optimized for gains

greater than or equal to five. Both are suitable for a wide

range of general purpose applications. Power supply pins

should be bypassed with 0.01µF ceramic capacitors.

OPERATING VOLTAGE

The OPA337 series and OPA338 series can operate from a

+2.5V to +5.5V single supply with excellent performance.

Unlike most op amps which are specified at only one supply

voltage, these op amps are specified for real-world applica-

tions; a single limit applies throughout the +2.7V to +5.5V

supply range. This allows a designer to have the same

assured performance at any supply voltage within the speci-

fied voltage range. Most behavior remains unchanged

throughout the full operating voltage range. Parameters

which vary significantly with operating voltage are shown in

typical performance curves.

FIGURE 2. Input Current Protection for Voltages Exceeding

the Supply Voltage.

5kΩ

OPA337

10mA max

+5V

OUT

OVERLOAD

VOUT, G = +1

(limited by input

common-mode

range)

–3V

VOUT, G = –1

(not limited by

input common-

mode range.)

G = ±1

OPA337, VIN = ±3V Greater Than VS = ±2.5V

FIGURE 1. OPA337—No Phase Inversion with Inputs

Greater than the Power Supply Voltage.

INPUT VOLTAGE

The input common-mode range extends from (V–) – 0.2V to

(V+) – 1.2V. For normal operation, inputs should be

limited to this range. The absolute maximum input voltage

is 500mV beyond the supplies. Inputs greater than the

input common-mode range but less than maximum input

voltage, while not valid, will not cause any damage to the

op amp. Furthermore, if input current is limited the inputs

may go beyond the power supplies without phase inver-

sion (Figure 1) unlike some other op amps.

Normally, input currents are 0.2pA. However, large inputs

(greater than 500mV beyond the supply rails) can cause

excessive current to flow in or out of the input pins.

Therefore, as well as keeping the input voltage below the

maximum rating, it is also important to limit the input

current to less than 10mA. This is easily accomplished

with an input resistor as shown in Figure 2.

USING THE OPA338 IN LOW GAINS

The OPA338 series is optimized for gains greater than or

equal to five. It has significantly wider bandwidth (12.5MHz)

and faster slew rate (4.6V/µs) when compared to the OPA337

series. The OPA338 series can be used in lower gain con-

figurations at low frequencies while maintaining its high

slew rate with the proper compensation.

Figure 3 shows the OPA338 in a unity-gain buffer configu-

ration. At dc, the compensation capacitor C1 is effectively

“open” resulting in 100% feedback (closed-loop gain = 1).

As frequency increases, C1 becomes lower impedance and

closed-loop gain increases, eventually becoming 1 + R2/R1

(in this case five, which is equal to the minimum gain

required for stability).

The required compensation capacitor value can be deter-

mined from the following equation:

C1 = 1/(2πfCR1)

Since fC may shift with process variations, it is recom-

mended that a value less than fC be used for determining C1.

With fC = 1MHz and R1 = 2.5kΩ, the compensation capaci-

tor is about 68pF.

The selection of the compensation capacitor C1 is important.

A proper value ensures that the closed-loop circuit gain is

greater than or equal to five at high frequencies. Referring to

the “Open-Loop Gain vs Frequency” plot in the Typical

Performance Curves section, the OPA338 gain line (dashed

in the curve) has a constant slope (–20dB/decade) up to

approximately 3MHz. This frequency is referred to as fC.

Beyond fC the slope of the curve increases, suggesting that

closed-loop gains less than 5 are not appropriate.

FIGURE 3. Compensation of OPA338 for Unity-Gain Buffer.

= 1

2πf

2.5kΩ

68pF

10kΩ

OPA338

OUT

Where f

is the frequency at which closed-loop

gains less than five are not appropriate—see text.

Improved slew rate (4.6V/µs) versus

OPA337 (1.2V/µs) in unity gain.

OPA337, OPA2337

OPA338, OPA2338

Figure 4 shows a compensation technique using an inverting

configuration. The low frequency gain is set by the resistor

ratio while the high frequency gain is set by the capacitor

ratio. As with the noninverting circuit, for frequencies above

fC the gain must be greater than the recommended minimum

stable gain for the op amp.

The capacitor values shown are the nearest standard values.

Capacitor values may need to be adjusted slightly to opti-

mize performance. For more detailed information, consult

the OPA686 product data sheet.

Figure 5 shows the large-signal transient response using the

circuit given in Figure 4. As shown, the OPA338 is stable in

low gain applications and provides improved slew rate

performance when compared to the OPA337.

FIGURE 4. Inverting Compensation Circuit of OPA338 for

Low Gain.

500mV/div

OPA338

2µs/div

FIGURE 5. G = 2, Slew-Rate Comparison of OPA338 and

OPA337.

OPA337

Resistors R1 and R2 are chosen to set the desired dc signal

gain. Then the value for C2 is determined as follows:

C2 = 1/(2πfCR2)

C1 is determined from the desired high frequency gain (GH):

C1 = (GH – 1) • C2

For a desired dc gain of 2 and high frequency gain of 10, the

following resistor and capacitor values result:

R1 = 10kΩC1 = 150pF

R2 = 5kΩC2 = 15pF

TYPICAL APPLICATION

Figure 6 shows the OPA2337 in a typical application. The

ADS7822 is a 12-bit, micro-power sampling analog-to-

digital converter available in the tiny MSOP-8 package. As

with the OPA2337, it operates with a supply voltage as

low as +2.7V. When used with the miniature SOT-23-8

package of the OPA2337, the circuit is ideal for space-

limited and low power applications. In addition, OPA2337’s

high input impedance allows large value resistors to be

used which results in small physical capacitors, further

reducing circuit size. For further information, consult the

ADS7822 product data sheet.

= , C

= (G

–1) • C

2πf

150pF

OPA338

OUT

5kΩR

10kΩ

Where G

is the high frequency gain,

= 1 + C

Improved slew rate versus OPA337

(see Figure 5). C

15pF

OPA337, OPA2337

OPA338, OPA2338

FIGURE 6. Low Power, Single-Supply, Speech Bandpass Filtered Data Acquisition System.

1/2

OPA2337E 1/2

OPA2337E

ADS7822

12-Bit A/D

GND

–IN

+IN

33pF DCLOCK

Serial

Interface

1000pF

1.5kΩR

20kΩ

100kΩ

150kΩ

510kΩ

51kΩ

OUT

REF

V+

= +2.7V to 5V

CS/SHDN

1000pF

Electret

Microphone

(1)

G = 100

Passband 300Hz to 3kHz

1MΩ

NOTE: (1) Electret microphone

with internal transistor (FET)

FIGURE 7. Recommended SOT-23-5 and SOT-23-8 Solder Footprints.

0.035

(0.889)

0.10

(2.54)

0.018

(0.457) 0.026

(0.66)

SOT-23-8

(Package Drawing #348)

Refer to end of data sheet or Appendix C of Burr-Brown IC Data Book for

tolerances and detailed package drawing. For further information on solder

pads for surface-mount packages, consult Application Bulletin AB-132.

SOT-23-5

(Package Drawing #331)

0.035

(0.889)

0.10

(2.54)

0.0375

(0.9525)

0.0375

(0.9525)

0.075

(1.905)

0.027

(0.686)