_______________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
19-5165; Rev 0; 3/10
General Description
The MAX19790 dual, general-purpose analog voltage
variable attenuator (VVA) is designed to interface with
50I systems operating in the 250MHz to 4000MHz fre-
quency range. Each attenuator includes a control circuit
that provides 22dB of attenuation range with a linear
control slope of 10dB/V.
Both attenuators share a common analog control and
can be cascaded together to yield 44dB of total dynamic
range, with a combined linear control slope of 20dB/V.
The IC is a monolithic device designed on one of Maxim’s
proprietary SiGe BiCMOS processes. The device oper-
ates from a single +5.0V supply and is available in a com-
pact, 36-pin thin QFN package (6mm x 6mm x 0.8mm)
with an exposed pad. Electrical performance is guaran-
teed over the extended -40° to +85°C temperature range.
Applications
Broadband System Applications, Including
Wireless Infrastructure Digital and Spread-
Spectrum Communication Systems
WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX™,
cdma2000®, GSM/EDGE, and MMDS Base
Stations
VSAT/Satellite Modems
Microwave Terrestrial Links
Lineup Gain Trim
Temperature Compensation Circuits
Automatic Level Control (ALC)
Transmitter Gain Control
Receiver Gain Control
General Test Equipment
Features
S 250MHz to 4000MHz RF Frequency Range
S Integrates Two Analog Attenuators in One
Monolithic Device
S Flexible Attenuation-Control Ranges
22dB (per Attenuator)
44dB (Both Attenuators Cascaded)
S 2.4dB 1500MHz Insertion Loss (per Attenuator)
S Linear dB/V Analog Control Response Curve
Simplifies Automatic Leveling Control and
Gain-Trim Algorithms
S Excellent Attenuation Flatness Over Wide
Frequency Ranges and Attenuation Settings
S Low 7.3mA Supply Current
S Single +5.0V Supply Voltage
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
T = Tape and reel.
WiMAX is a trademark of WiMAX Forum.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
PART TEMP RANGE PIN-PACKAGE
MAX19790ETX+ -40NC to +85NC36 Thin QFN-EP*
MAX19790ETX+T -40NC to +85NC36 Thin QFN-EP*
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
2
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
VCC to GND ..........................................................-0.3V to +5.5V
CTRL to GND (with VCC = +5.0V applied) ............ 0V to +4.75V
All Other Pins to GND .............................. -0.3V to (VCC + 0.3V)
RF Input ......................................................................... +20dBm
Current into CTRL Pin (VCC grounded) .............................40mA
Maximum Junction Temperature .....................................+150°C
Operating Temperature Range .......................... -40°C to +85°C
Storage Temperature Range ........................….-65°C to +150°C
Continuous Power Dissipation (TC = +85°C) (Note 1) .......2.1W
θJC (Notes 2, 4) ............................................................ +10°C/W
θJA (Notes 3, 4) ............................................................ +35°C/W
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
DC ELECTRICAL CHARACTERISTICS
(VCC = +4.75V to +5.25V, VCTRL = +1.0V to +4.0V, no RF signals applied, all input and output ports terminated with 50I, TC =
-40°C to +85°C, unless otherwise noted. Typical values are at VCC = +5.0V, VCTRL = +1.0V, TC = +25°C, unless otherwise noted.)
RECOMMENDED AC OPERATING CONDITIONS
ABSOLUTE MAXIMUM RATINGS
Note 1: TC is the temperature on the exposed pad of the package. TA is the ambient temperature of the device and PCB.
Note 2: Based on junction temperature TJ = TC + (θJC x VCC x ICC). This formula can be used when the temperature of the exposed
pad is known while the device is soldered down to a PCB. See the Applications Information section for details. The junction
temperature must not exceed +150°C.
Note 3: Junction temperature TJ = TA + JA x VCC x ICC). This formula can be used when the ambient temperature of the PCB is
known. The junction temperature must not exceed +150°C.
Note 4: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
CAUTION! ESD SENSITIVE DEVICE
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLY
Supply Voltage VCC 4.75 5.0 5.25 V
Supply Current ICC 7.3 9.5 mA
CONTROL INPUT
Control Voltage Range VCTRL (Note 5) 1.0 4.0 V
Control Input Resistance RCTRL 50 kI
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RF Frequency Range fRF (Note 6) 250 4000 MHz
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
3
AC ELECTRICAL CHARACTERISTICS
(MAX19790 Evaluation Kit, line and connector losses included, two attenuators in cascade, VCC = 4.75V to 5.25V, RF ports are
driven from 50I sources, input PRF = -10dBm, fRF = 950MHz to 2150MHz, VCTRL = +1.0V, TC = -40°C to +85°C. Typical values are
for TC = +25°C, VCC = +5.0V, input PRF = -10dBm, fRF = 1500MHz, VCTRL = +1.0V, unless otherwise noted.)
Note 5: Operating outside this range for extended periods may affect device reliability. Limit pin input current to 40mA when VCC
is not present (see Table 1 for R4 value).
Note 6: Operation outside this range is possible, but with degraded performance of some parameters. See the Typical Operating
Characteristics.
Note 7: f1 = 1500MHz, f2 = 1501MHz, -10dBm/tone at attenuator input.
Note 8: Guaranteed by design and characterization.
Note 9: Switching time is measured from 50% of the control signal to when the RF output settles to Q1dB.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Insertion Loss IL TC = +25NC950MHz to 1500MHz 4.4 6.3 dB
950MHz to 2150MHz 4.4 7.0
Loss Variation Over Temperature TC = -40NC to +85NC 0.6 dB
Input P1dB IP1dB 23.1 dBm
Input Second-Order Intercept
Point IIP2 fRF1 + fRF2 term, fRF1 - fRF2 = 1MHz
(Note 7) 69.6 dBm
Input Third-Order Intercept Point IIP3 fRF1 - fRF2 = 1MHz (Note 7) 36.3 dBm
Second Harmonic 2fIN 72 dBc
Third Harmonic 3fIN 77 dBc
Attenuation-Control Range AR
One attenuator, VCTRL = +1.0V
to +4.0V, TC = +25NC22
dB
Two attenuators,
VCTRL = +1.0V
to +4.0V,
TC = +25NC
950MHz to 1500MHz 36 44.7
950MHz to 2150MHz 33 44.7
Average Attenuation-Control
Slope VCTRL = +1.0V to +3.5V 20.0 dB/V
Maximum Attenuation-Control
Slope VCTRL = +1.0V to +3.5V 30.4 dB/V
Attenuation Flatness Over
125MHz Bandwidth (Note 8)
Peak-to-peak for VCTRL = +1.0V to +3.1V,
TC = +25NC0.13 0.89 dB
Switching Time From 15dB to 0dB attenuation (Note 9) 500 ns
Input Return Loss All gain settings 25 dB
Output Return Loss All gain settings 21 dB
Group Delay Input/output 50I lines deembedded 190 ps
Group-Delay Flatness Over
125MHz Bandwidth Peak-to-peak 10 ps
Group-Delay Change vs.
Attenuation Control VCTRL = +1.0V to +4.0V -175 ps
Insertion Phase Change vs.
Attenuation Control VCTRL = +1.0V to +4.0V 82 Degrees
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
4
Typical Operating Characteristics
(MAX19790 Evaluation Kit, two attenuators in cascade, VCC = +5.0V, PRF = -10dBm, TC = +25NC, VCTRL = +1.0V, unless otherwise noted.)
SUPPLY CURRENT vs. VCC
MAX19790 toc01
VCC (V)
SUPPLY CURRENT (mA)
5.1255.0004.875
7.0
7.5
8.0
6.5
4.750 5.250
TC = +25°C
TC = +85°C
TC = -40°C
INPUT MATCH vs. RF FREQUENCY
MAX19790 toc02
RF FREQUENCY (MHz)
S11 (dB)
300020001000
-30
-20
-10
0
-40
0 4000
TC = -40°C
TC = +25°C
TC = +85°C
OUTPUT MATCH vs. RF FREQUENCY
MAX19790 toc03
RF FREQUENCY (MHz)
S22 (dB)
300020001000
-30
-20
-10
0
-40
0 4000
TC = -40°C
TC = +25°C
TC = +85°C
INSERTION LOSS vs. RF FREQUENCY
MAX19790 toc04
RF FREQUENCY (MHz)
INSERTION LOSS (dB)
300020001000
2
4
6
8
10
12
0
0 4000
TC = -40°C
TC = +25°C
TC = +85°C
INPUT MATCH vs. VCTRL
MAX19790 toc05
VCTRL (V)
4000MHz
500MHz
2150MHz
950MHz
S11 (dB)
32
-30
-20
-10
0
-40
1 4
250MHz
OUTPUT MATCH vs. VCTRL
MAX19790 toc06
VCTRL (V)
4000MHz
500MHz
2150MHz
950MHz
S22 (dB)
250MHz
32
-30
-20
-10
0
-40
1 4
ATTENUATION vs. VCTRL
MAX19790 toc07
VCTRL (V)
4000MHz
2150MHz
S21 (dB)
32
-50
-40
-30
-20
-10
0
-60
1 4
250MHz, 500MHz, 950MHz
ATTENUATION vs. VCTRL
MAX19790 toc08
VCTRL (V)
fRF = 950MHz
S21 (dB)
32
-50
-40
-30
-20
-10
0
-60
1 4
TC = -40°C, +25°C, +85°C
S21 PHASE CHANGE vs. VCTRL
MAX19790 toc09
VCTRL (V)
4000MHz
950MHz
500MHz
2150MHz
S21 PHASE CHANGE (DEGREES)
32
0
50
100
150
200
-50
1 4
REFERENCED TO INSERTION-LOSS STATE.
POSITIVE PHASE = ELECTRICALLY
SHORTER.
250MHz
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
5
Typical Operating Characteristics (continued)
(MAX19790 Evaluation Kit, two attenuators in cascade, VCC = +5.0V, PRF = -10dBm, TC = +25NC, VCTRL = +1.0V, unless otherwise noted.)
INPUT IP3 vs. VCTRL
MAX19790 toc11
VCTRL (V)
INPUT IP3 (dBm)
32
25
30
35
40
45
20
1 4
PIN = -10dBm/TONE
950MHz
1500MHz
2150MHz
INPUT IP2 vs. VCTRL
MAX19790 toc12
VCTRL (V)
INPUT IP2 (dBm)
32
50
60
70
80
90
40
1 4
fRF = 950MHz
PIN = -10dBm/TONE
TC = +25°C
TC = +85°C
TC = -40°C
INPUT IP2 vs. VCTRL
MAX19790 toc13
VCTRL (V)
INPUT IP2 (dBm)
32
50
60
70
80
90
40
1 4
PIN = -10dBm/TONE
2150MHz
950MHz
1500MHz
INPUT P1dB vs. RF FREQUENCY
MAX19790 toc14
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
17501350
21
22
23
24
25
26
20
950 2150
TC = +85°C
TC = +25°C
TC = -40°C
INPUT IP3 vs. VCTRL
MAX19790 toc10
VCTRL (V)
INPUT IP3 (dBm)
32
25
30
35
40
45
20
1 4
fRF = 950MHz
PIN = -10dBm/TONE
TC = +25°C
TC = +85°C
TC = -40°C
INPUT P1dB vs. RF FREQUENCY
MAX19790 toc15
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
17501350
21
22
23
24
25
26
20
950 2150
VCC = 4.75V
VCC = 5.25V VCC = 5.0V
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
6
Typical Operating Characteristics (continued)
(MAX19790 Evaluation Kit, one attenuator connected, VCC = +5.0V, PRF = -10dBm, TC = +25NC, VCTRL = +1.0V, unless otherwise noted.)
ATTENUATION vs. VCTRL
MAX19790 toc23
VCTRL (V)
S21 (dB)
32
-25
-20
-15
-10
-5
0
-30
1 4
fRF = 950MHz
TC = -40°C, +25°C, +85°C
OUTPUT MATCH vs. RF FREQUENCY
MAX19790 toc18
RF FREQUENCY (MHz)
S22 (dB)
300020001000
-40
-30
-20
-10
0
-50
0 4000
TC = -40°C
TC = +85°C
TC = +25°C
SUPPLY CURRENT vs. VCC
MAX19790 toc16
VCC (V)
SUPPLY CURRENT (mA)
5.1255.0004.875
7.0
7.5
8.0
6.5
4.750 5.250
TC = -40°C
TC = +25°C
TC = +85°C
S21 PHASE CHANGE vs. VCTRL
MAX19790 toc24
VCTRL (V)
S21 PHASE CHANGE (DEGREES)
32
-25
0
25
50
75
100
-50
1 4
2150MHz
500MHz
250MHz
4000MHz
950MHz
REFERENCED TO INSERTION-LOSS STATE.
POSITIVE PHASE = ELECTRICALLY SHORTER.
INSERTION LOSS vs. RF FREQUENCY
MAX19790 toc19
RF FREQUENCY (MHz)
INSERTION LOSS (dB)
300020001000
2
4
6
8
0
0 4000
TC = -40°C
TC = +85°C
TC = +25°C
INPUT MATCH vs. RF FREQUENCY
MAX19790 toc17
RF FREQUENCY (MHz)
S11 (dB)
300020001000
-40
-30
-20
-10
0
-50
0 4000
TC = +25°C
TC = +85°C
TC = -40°C
INPUT MATCH vs. VCTRL
MAX19790 toc20
VCTRL (V)
S11 (dB)
32
-40
-30
-20
-10
0
-50
1 4
4000MHz
950MHz
250MHz 2150MHz
500MHz
OUTPUT MATCH vs. VCTRL
MAX19790 toc21
VCTRL (V)
S22 (dB)
32
-40
-30
-20
-10
0
-50
1 4
4000MHz
950MHz
250MHz
2150MHz
500MHz
ATTENUATION vs. VCTRL
MAX19790 toc22
VCTRL (V)
S21 (dB)
32
-25
-20
-15
-10
-5
0
-30
1 4
250MHz, 500MHz, 950MHz
2150MHz
4000MHz
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
7
Typical Operating Characteristics (continued)
(MAX19790 Evaluation Kit, one attenuator connected, VCC = +5.0V, PRF = -10dBm, TC = +25NC, VCTRL = +1.0V, unless otherwise noted.)
INPUT IP3 vs. VCTRL
MAX19790 toc26
VCTRL (V)
INPUT IP3 (dBm)
32
25
30
35
40
45
20
1 4
PIN = -10dBm/TONE
950MHz
2150MHz
1500MHz
INPUT IP2 vs. VCTRL
MAX19790 toc27
VCTRL (V)
INPUT IP2 (dBm)
32
60
70
80
90
100
50
1 4
fRF = 950MHz
PIN = -10dBm/TONE
TC = -40°C
TC = +25°C
TC = +85°C
INPUT IP3 vs. VCTRL
MAX19790 toc25
VCTRL (V)
INPUT IP3 (dBm)
32
25
30
35
40
45
20
1 4
fRF = 950MHz
PIN = -10dBm/TONE
TC = +25°C
TC = -40°C
TC = +85°C
INPUT IP2 vs. VCTRL
MAX19790 toc28
VCTRL (V)
INPUT IP2 (dBm)
32
60
70
80
90
100
50
1 4
PIN = -10dBm/TONE
950MHz
2150MHz
1500MHz
INPUT P1dB vs. RF FREQUENCY
MAX19790 toc29
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
17501350
21
22
23
24
25
26
20
950 2150
TC = +25°C
TC = +85°C
TC = -40°C
INPUT P1dB vs. RF FREQUENCY
MAX19790 toc30
RF FREQUENCY (MHz)
INPUT P1dB (dBm)
17501350
21
22
23
24
25
26
20
950 2150
VCC = 4.75V
VCC = 5.0V
VCC = 5.25V
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
8
Pin Description
Pin Configuration/Functional Diagram
GND
GND
GND
GND
CTRL
GND
VCC
GND
GND
GND
GND
VCC
GND
IN_B
GND
*EXPOSED PAD.
GND
123456789
10
11
12
13
14
15
16
17
18
192021222324252627
28
29
ATTEN_B
ATTEN_A
30
31
32
33
34
35
36
VCC
GND
GND
GND
GND
GND
OUT_A
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
THIN QFN
TOP VIEW
GND
IN_A
OUT_B
ATTENUATION-
CONTROL
CIRCUITRY
*EP
+
MAX19790
PIN NAME FUNCTION
1, 3, 4, 6, 7, 9, 10,
12, 14–28, 30, 31,
33, 34, 36
GND Ground. Connect to the board’s ground plane using low-inductance layout techniques.
2 OUT_A Attenuator A Output. Internally matched to 50I over the operating frequency band. This pin,
if used, requires a DC block. If this attenuator is not used, the pin can be left unconnected.
5, 13, 32 VCC Power Supply. Bypass to GND with capacitors and resistors as shown in the Typical
Application Circuit.
8 IN_A Attenuator A Input. Internally matched to 50I over the operating frequency band. This pin,
if used, requires a DC block. If this attenuator is not used, the pin can be left unconnected.
11 CTRL
Analog Attenuator Control Input. VCC must be present unless using a current-limiting resis-
tor, as noted in the Applications Information section. Limit voltages applied to this pin to a
+1.0V to +4.0V range with VCC present to ensure device reliability.
29 OUT_B Attenuator B Output. Internally matched to 50I over the operating frequency band. This pin,
if used, requires a DC block. If this attenuator is not used, the pin can be left unconnected.
35 IN_B Attenuator B Input. Internally matched to 50I over the operating frequency band. This pin,
if used, requires a DC block. If this attenuator is not used, the pin can be left unconnected.
EP Exposed Pad. Internally connected to GND. Solder evenly to the board’s ground plane for
proper operation.
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
9
Detailed Description
The MAX19790 is a dual, general-purpose analog volt-
age variable attenuator (VVA) designed to interface
with 50I systems operating in the 250MHz to 4000MHz
frequency range. Each attenuator includes a control
circuit that provides 22dB of attenuation range with a
linear control slope of 10dB/V. Both attenuators share a
common analog control and can be cascaded together
to yield 44dB of total dynamic range, with a combined
linear control slope of 20dB/V.
Applications Information
Analog Attenuation Control
A single input voltage at the CTRL pin adjusts the attenu-
ation of the device. Up to 22dB of attenuation-control
range is provided per attenuator. At the insertion-loss
setting, the attenuator’s loss is approximately 2.4dB.
If a larger attenuation-control range is desired, the
second on-chip attenuator can be connected in series to
provide an additional 22dB of gain-control range.
Note that the CTRL pin simultaneously adjusts both
on-chip attenuators. The CTRL input voltage drives a
high-impedance load (> 50kI). It is suggested that a
current-limiting resistor be included in series with this
connection, to limit the input current to less than 40mA,
should the control voltage be applied when VCC is not
present. A series resistor of greater than 200I provides
complete protection for +5.0V control voltage ranges.
Note: To ensure the reliability of the device, limit CTRL
input voltages to a +1.0V to +4.0V range when VCC is
present.
Layout Considerations
A properly designed PCB is an essential part of any
RF/microwave circuit. Keep RF signal lines as short as
possible to reduce losses, radiation, and inductance.
For best performance, route the ground-pin traces
directly to the exposed pad underneath the package.
This pad MUST be connected to the ground plane of
the board by using multiple vias under the device to
provide the best RF and thermal conduction path. Solder
the exposed pad on the bottom of the device package
to a PCB.
Power-Supply Bypassing
Proper voltage-supply bypassing is essential for high-
frequency circuit stability. Bypass each VCC pin with
capacitors placed as close as possible to the device.
Place the smallest capacitor closest to the device. See
the Typical Application Circuit and Table 1 for details.
Table 1. Typical Application Circuit Component Values
*C8 can be used to provide additional filtering. Depending on the external driver used on the CTRL line, this capacitance could
slow down the response time.
DESIGNATION QTY DESCRIPTION
C1, C3, C5 3
220pF Q5%, 50V C0G ceramic
capacitors (0402)
Murata GRM1555C1H221J
C2, C4 2
0.01FF Q10%, 25V X7R ceramic
capacitors (0402)
Murata GRM155R71E103K
C6 1
1000pF Q5%, 50V C0G ceramic
capacitor (0402)
Murata GRM1555C1H102J
C7 1
0.1FF Q10%, 16V X7R ceramic
capacitor (0603)
Murata GRM188R71C104K
C8* 0 Not installed, ceramic capacitor
(0603)
DESIGNATION QTY DESCRIPTION
C9 1
22pF Q5%, 50V C0G ceramic
capacitor (0402)
Murata GRM1555C1H220J
R1, R2 2 10I Q5% resistors (0402)
Any
R3, R4 2
0I resistors (0402)
Note: In cases where VCTRL is
applied before or removed after
VCC, use R4 = 200I.
U1 1
Analog attenuator IC
Maxim MAX19790ETX+
Note: U1 has an exposed pad
conductor, which requires it to be
solder-attached to a grounded
pad on the PCB to ensure a
proper electrical/thermal design.
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
10
Typical Application Circuit
Exposed Pad RF and Thermal
Considerations
The exposed pad (EP) of the device’s 36-pin thin QFN
package provides a low thermal-resistance path to
the die. It is important that the PCB on which the IC is
mounted be designed to conduct heat from this contact.
In addition, provide the EP with a low-inductance RF
ground path for the device.
The EP MUST be soldered to a ground plane on the
PCB, either directly or through an array of plated via
holes. Soldering the pad to ground is also critical
for efficient heat transfer. Use a solid ground plane
wherever possible.
C1
RFA
CTRL
VCC
R4
R3
IN_B
GND
2 3 4 5 6 7 8 9
10
11
12
13
14
15
16
17
18
192021222324252627
28
29
ATTEN_B
ATTEN_A
EP
30
31
32
33
34
35
36
OUT_A
GND
IN_A
OUT_B
1
ATTENUATION-
CONTROL
CIRCUITRY
*SCHEMATIC SHOWS CONFIGURATION FOR TWO CASCADED ATTENUATORS. TO USE ATTENUATOR A ONLY MOVE C3
TO CONNECT OUT_A TO RFB. TO USE ATTENUATOR B ONLY MOVE C3 TO CONNECT RFB TO IN_B.
GND
GND
GND
GND
GND
R1
C2
VCC
VCC
CTRL C9
C8
C6
C7
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
RFB*
C3
VCC
C4
R2
C5
RFOUT
VCC
GND
GND
GND
GND
GND
GND
GND
GND
GND
MAX19790
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
MAX19790
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 11
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Package Information
For the latest package outline information and land patterns,
go to www.maxim-ic.com/packages. Note that a “+”, “#”, or
“-” in the package code indicates RoHS status only. Package
drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Chip Information
PROCESS: BiCMOS
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
36 Thin QFN-EP T3666+2 21-0141