Ultra-High-Speed, Low-Distortion, Differential-

to-Single-Ended Line Receivers with Enable

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

General Description

The MAX4444/MAX4445 differential line receivers offer

unparalleled high-speed, low-distortion performance.

Using a three op amp instrumentation amplifier archi-

tecture, these ICs have symmetrical differential inputs

and a single-ended output. They operate from ±5V

supplies and are capable of driving a 100

Ω load to

±3.7V. The MAX4444 has an internally set closed-loop

gain of +2V/V, while the MAX4445 is compensated for

gains of +2V/V or greater, set by an external resistor. A

low-power enable mode reduces current consumption

to 3.5mA.

Using current-feedback techniques, the MAX4444/

MAX4445 achieve a 550MHz bandwidth while maintain-

ing up to a 5000V/µs slew rate. Excellent differential

gain/phase and noise specifications make these ampli-

fiers ideal for a wide variety of video and RF signal-pro-

cessing applications. An evaluation kit is available to

speed design.

Applications

Differential-to-Single-Ended Conversion

Twisted-Pair to Coaxial Converter

High-Speed Instrumentation Amplifier

Data Acquisition

Medical Instrumentation

High-Speed Differential Line Receiver

Features

o 5000V/µs Slew Rate (MAX4444)

o +2V/V Internally Fixed Gain (MAX4444)

o External Gain Selection

(MAX4445, AVCL ≥ +2V/V)

o 550MHz -3dB Bandwidth

o -60dB SFDR at 5MHz

o Low Differential Gain/Phase: 0.07%/0.05°

o Low Noise: 25nV/

√Hz at fIN = 100kHz

o Low-Power Disable Mode Reduces Quiescent

Current to 3.5mA

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Maxim Integrated Products

1

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

VCC

GND

OUT

VEE

VEE

VEE

VEE

REF

EN

TOP VIEW

MAX4444

MAX4445

SO

VCC

IN-

IN+

N.C. (RG)

N.C. (RG)

VEE

VEE

( ) ARE FOR MAX4445 ONLY.

75

Ω

75

Ω

0.1

µF

GND

IN-

IN+

SIGNAL

INPUT

OUTPUT

REF

EN

VEE

VCC

+5V

-5V

OUT

MAX4444

0.1

µF

Typical Operating Circuit

19-1543; Rev 0; 10/99

EVALUATION

KIT AVAILABLE

Pin Configuration

Ordering Information

PART

MAX4444ESE

MAX4445ESE

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-PACKAGE

16 Narrow SO

16 Narrow SO