19-2222; Rev 2; 7/05
15ꢀ Diꢁitallꢂ ꢃroꢁrammable
ꢃrecision ꢀoltaꢁe-Dividers for ꢃGAs
General Description
Features
The MAX5430/MAX5431 are digitally programmable
high-precision resistor arrays for PGAs. The MAX5430/
MAX5431 operate from a single 15V supply or dual
15V suppliesꢀ and consume only 35ꢁA supply current.
These devices are intended for programmable-gain
amplifier (PGA) applications and consist of fixed resis-
tor-dividers. Each device has digitally controlled con-
tacts with four precision noninverting gains of 1ꢀ 2ꢀ 4ꢀ
and 8 with ratio accuracy of 0.025% (MAX5430A/
MAX5431A)ꢀ 0.09% (MAX5430B/MAX5431B)ꢀ or 0.5%
(MAX5430C/MAX5431C). The MAX5431 includes an
on-chip matching resistor for op amp input bias-current
compensation.
♦ Four Noninverting PGA Gain Configurations:
A = 1, 2, 4, and 8
V
♦ Precision 0.025% Ratio Accuracy
♦ On-Chip Matching Resistor for Op Amp Bias-
Current Compensation (MAX5431)
♦ Single-Supply +12V to +15V, or Dual-Supply 12V
to 15V Operation
♦ Low 35µA Supply Current
♦ CMOS/TTL Logic Compatible 2-Wire Parallel
Interface
♦ Space-Saving 8-Pin SOT23 and 10-Pin µMAX
Packages
The MAX5430/MAX5431 are available in space-saving
8-pin SOT23 and 10-pin ꢁMAX® packagesꢀ and speci-
fied over the extended temperature range of (-40°C to
+85°C).
♦ +3V Logic Compatibility
Applications
Orderinꢁ Information
General-Purpose Programmable Noninverting
Amplifier
TEMP
RANGE
PIN-
GAIN
PART
PACKAGE ACCURACY
Programmable Instrumentation Amplifier
MAX5430AEKA -40°C to +85°C 8 SOT23
MAX5430BEKA -40°C to +85°C 8 SOT23
MAX5430CEKA -40°C to +85°C 8 SOT23
MAX5431AEUB -40°C to +85°C 10 ꢁMAX
MAX5431BEUB -40°C to +85°C 10 ꢁMAX
MAX5431CEUB -40°C to +85°C 10 ꢁMAX
0.025%
0.09%
0.5%
0.025%
0.09%
0.5%
ꢃin Confiꢁurations
Functional Diaꢁram
V
DD
H
TOP VIEW
V
MAX5430
MAX5431
D0
D1
W
1
2
3
4
5
10
9
DD
W
MATCH_H
GND
MAX5431
D0
D1
8
DECODER
7
H
L
V
SS
MATCH_H
MATCH_L
6
MATCH_L
µMAX
V
SS
L
GND
Pin Configurations continued at end of data sheet.
MAX5431 ONLY
µMax is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
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.