MAX5421 Maxim Integrated Products, MAX5421 Datasheet
MAX5421
Manufacturer Part Number
MAX5421
Description
(MAX5420 / MAX5421) Digitally Programmable Precision Voltage Divider
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5421.pdf
(9 pages)
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The MAX5420 and MAX5421 are digitally programmable
precision voltage dividers optimized for use in digitally pro-
grammable gain amplifier configurations. The MAX5420/
MAX5421 operate from a single +5V supply or dual ±5V
supply, and consume only 3µA supply current. These
devices consist of a digitally selectable resistor array that
provides four precision noninverting gains of 1, 2, 4, and 8
for PGAs. The MAX5420 and MAX5421 achieve a resistor
ratio accuracy of 0.025% (MAX542_A), 0.09% (MAX542_B),
and 0.5% (MAX542_C). The MAX5421 includes an on-chip
matching resistor for op amp bias-current compensation.
The MAX5420 and MAX5421 are available in 8-pin and
10-pin µMAX packages. The devices are specified over
the extended temperature range (-40°C to +85°C).
19-2229; Rev 1; 7/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MATCH_H
MATCH_L
General-Purpose Programmable Noninverting
Amplifiers
Programmable Instrumentation Amplifiers
D0
D1
MAX5421 ONLY
MAX5420
MAX5421
DECODER
________________________________________________________________ Maxim Integrated Products
V
DD
General Description
Functional Diagram
V
SS
GND
H
L
Digitally Programmable Precision
Applications
W
Voltage Divider for PGAs
o Four Precision Divider Ratios For Noninverting
o 0.025%, 0.09%, or 0.5% Ratio Accuracy
o On-Chip Matching Resistor for Op Amp Bias-
o 5V Single or ±5V Dual Supply Operation
o Low 3µA Supply Current
o CMOS/TTL Logic Compatible 2-Wire Parallel
o Small 8-Pin and 10-Pin µMAX Packages
MAX5420AEUA -40 C to +85 C
MAX5420BEUA -40 C to +85 C
MAX5420CEUA -40 C to +85 C
MAX5421AEUB -40 C to +85 C
MAX5421BEUB -40 C to +85 C
MAX5421CEUB -40 C to +85 C
Gains of 1, 2, 4, and 8 in PGAs
Guaranteed Over -40°C to +85°C
Current Compensation (MAX5421)
Interface
PART
TOP VIEW
GND
GND
V
V
V
V
DD
D0
DD
D0
D1
SS
SS
1
2
4
1
2
3
4
5
3
RANGE
TEMP
Ordering Information
MAX5420
MAX5421
MAX-10
MAX-8
Pin Configurations
PIN-
PACKAGE
8 µMAX
8 µMAX
8 µMAX
10 µMAX
10 µMAX
10 µMAX
10
6
8
7
5
9
8
7
6
H
L
H
W
L
MATCH_H
MATCH_L
W
D1
Features
ACCURACY
0.025%
0.025%
0.09%
0.09%
GAIN
0.5%
0.5%
1
Datasheet pdf - http://www.DataSheet4U.net/
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