Datasheet MAX5436, MAX5437, MAX5438, MAX5439 (Analog Devices)

19-2657; Rev 3; 9/04
±15V, 128-Tap, Low-Drift Digital Potentiometers MAX5436–MAX5439 General Description Features
The MAX5436–MAX5439 are 128-tap high-voltage (±5V ♦
+10V to +30V Single-Supply Operation
to ±15V) digital potentiometers in packages that are half the size of comparable devices in 8-pin SO. They perform ♦
-28V to -10V Single Negative Supply Operation
the same function as mechanical potentiometers, but ♦
±5V to ±15V Dual-Supply Operation
replace the mechanics with a simple digital interface. The digital logic is powered by a separate single +2.7V to ♦
128 Tap Positions
+5.25V supply voltage (VCC). The resistor string uses its ♦
Uncommitted High-Voltage Amplifier
own analog supplies (VDD and VSS) that require
(MAX5437/MAX5439)
VDD - VSS to be greater than 9V and less than 31.5V. This allows for greater flexibility in voltage ranges that can be ♦
Low Temperature Coefficient
used with these devices. Examples of analog supply
35ppm/°C (End-to-End)
ranges include not only dual voltages of ±5V to ±15V, but
5ppm/°C (Ratiometric)
single-supply voltages, such as +10V, +15V, +30V, -30V, ♦
Small-Footprint Packages
and more, as long as the ranges of VDD - VSS and VCC - V
10-Pin µMAX (MAX5436/MAX5438)
SS are met.
14-Pin TSSOP (MAX5437/MAX5439)
The MAX5437/MAX5439 include an on-chip, high- voltage, uncommitted amplifier, providing additional ♦
Glitchless Switching Between the Resistor Taps
reductions in board space and cost. Other features ♦
3-Wire SPI/QSPI/MICROWIRE-Compatible Serial
include low 35ppm/°C end-to-end and 5ppm/°C ratio-
Interface
metric resistor temperature coefficients, a 3-wire SPI™/ QSPI™/MICROWIRE™-compatible serial interface, and ♦
50k
Ω
/100k
Ω
End-to-End Resistances
a power-on reset to midscale. ♦
Power-On Reset: Wiper Goes to Midscale
The MAX5436/MAX5438 are available in 10-pin µMAX
(Position 64)
packages. The MAX5437/MAX5439 are available in 14-
Ordering Information
pin TSSOP package. Each device is guaranteed over the extended temperature range of -40°C to +85°C.
PIN- RESISTANCE PART TEMP RANGE PACKAGE (k
Ω
) MAX5436
EUB -40°C to +85°C 10 µMAX 50
Applications MAX5437
EUD -40°C to +85°C 14 TSSOP 50
MAX5438
EUB -40°C to +85°C 10 µMAX 100 LCD Screen Contrast Adjustment
MAX5439
EUD -40°C to +85°C 14 TSSOP 100 Data-Acquisition Systems Mechanical Potentiometer Replacement
Pin Configurations
Low-Drift Programmable Gain Amplifier Audio Volume Control TOP VIEW SCLK 1 10 V SCLK 1 14 V CC CC DIN 2 9 L DIN 2 13 L MAX5436 CS 3 8 W MAX5438 CS 3 12 W GND 4 7 H SHDN 4 MAX5437 11 H MAX5439 VSS 5 6 VDD GND 5 10 VDD V 6 9 IN+ μ
MAX
SS OUT 7 8 IN- SPI/QSPI are trademarks of Motorola, Inc.
TSSOP
MICROWIRE is a trademark of National Semiconductor Corp.
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