Maxim > Products > Voltage References > MAX5420, MAX5421

MAX5420, MAX5421

Digitally Programmable Precision Voltage Divider for PGAs

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

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).

Data Sheet

Download	Rev 2	(PDF, 208kB)
E-Mail

Key Features

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

Applications/Uses

General-Purpose Programmable Noninverting Amplifiers
Programmable Instrumentation Amplifiers

Key Specifications:

Digital Potentiometers

Part Number

POTs

Control Interface

Wiper Memory

Steps

R_END-TO-END
(kΩ)

Res. Tol.
(%)

I_CC @5V
(µA)

Smallest Available Pckg.
(mm²)

Budgetary Price

max

max w/pins

See Notes

MAX5420

2-Wire Parallel

Volatile

0.025

15.6

$1.26 @1k

MAX5421

15.4

$1.43 @1k

See All Digital Potentiometers (126)

Pricing 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.

Diagram

Functional Diagram

More Information

New Product Press Release

[ 2001-12-04 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2229 Rev 2; 2005-02-28
This page last modified: 2009-10-15