MAX34406

Quad Current-Sense Amplifier

with Overcurrent Threshold Comparators

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General Description

The MAX34406 is a quad, high-side, unidirectional, cur-

rent-sense amplifier that offers precision accuracy. It

provides analog outputs for each of the four amplifiers

that can be routed to an external ADC, and contains four

overcurrent comparators with a fixed 1.0V threshold. All

four comparators are logically ORed, and the result can

be delayed/filtered with an external capacitor before it is

fed to a latched common shutdown open-drain output pin.

Applications

Network Switches/Routers

Base Stations

Servers

Smart Grid Network Systems

Industrial Controls

Features

S

Four Precision Current-Sense Amplifiers

S

Fixed Gains of 25V/V, 50V/V, 100V/V, and 200V/V

S

Less Than ±600µV of Input Offset

S

Less Than ±0.6% of Gain Error (T/F/H) or ±0.8% of

Gain Error (W)

S

Wide 2.0V to 28V Common Mode Range

S

Analog Voltage Outputs for Each Amplifier

S

Independent Overcurrent Comparators with Fixed

1.0V Threshold

S

Low Power Consumption

S

-40NC to +85NC Temperature Range

S

Small 24-Pin TQFN (4mm x 4mm) Package

Block Diagram

19-5930; Rev 1; 1/12

Ordering Information appears at end of data sheet.

EVALUATION KIT AVAILABLE

AMPLIFIER 4

ENA

CDLY

OCx

GND

OUTx

INx+

INx-

SHTDN

AMPLIFIER 3

AMPLIFIER 2

AMPLIFIER 1

MAX34406

P

N

N

N

R1

4

R1

6V

CLAMP

OR

5µA

OR

POR

1.0V

REFERENCE

CLR

D

CK

Q

4

4

4

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.