MAX5420, MAX5421 Digitally Programmable Precision Voltage Divider for PGAs

Description

The MAX5420 and MAX5421 are digitally programmable precision voltage dividers optimized for use in digitally programmable 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).

Key Features

Applications/Uses

	Four Precision Divider Ratios For Noninverting Gains of 1, 2, 4, and 8 in PGAs
	0.025%, 0.09%, or 0.5% Ratio Accuracy Guaranteed Over -40°C to +85°C
	On-Chip Matching Resistor for Op Amp Bias- Current Compensation (MAX5421)
	5V Single or ±5V Dual Supply Operation
	Low 3µA Supply Current
	CMOS/TTL Logic Compatible 2-Wire Parallel Interface
	Small 8-Pin and 10-Pin µMAX Packages

	General-Purpose Programmable Noninverting Amplifiers
	Programmable Instrumentation Amplifiers

Key Specifications: Digital Potentiometers

Part Number

POTs Per Pkg.

Control Interface

Wiper Memory

Number of Steps

End-to-End Resistance (kΩ)

Res. Tol. (%)

Max. Idle State Supply Current @5V (µA)

Applications

Features

Dual Supply Voltage (±V)

Supply Voltage (V)

RoHS Available

Package

Price^**

MAX5420

2-Wire Parallel

Volatile

0.025

•	Precision Voltage Divider

4.75 to 5.25

Yes

uMAX/8

$1.26 @ 1k

MAX5421

•	Op-Amp Input Bias Current Comp. Resistor

uMAX/10

$1.43 @ 1k

See All Digital Potentiometers (121)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Reliability Reports


		Show FIT data for:

		Reliability Report: MAX5420xUA.pdf

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Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
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Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-24 of 24

MAX5420

Free
Sample

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Package:	TYPE PINS FOOTPRINT
	DRAWING CODE/VAR *

Temp

RoHS/Lead-Free?
Materials Analysis

MAX5420AEUA

uMAX;8 pin;
Dwg: 21-0036K (PDF)
Use pkgcode/variation: U8-1*

-40°C to +85°C

RoHS/Lead-Free: No
Materials Analysis

MAX5420CEUA+T