Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Amplifier - Video buffering 550 MHz SOIC 16

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 100Ω 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

♦ 5000V/µs Slew Rate (MAX4444)

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

♦ External Gain Selection

(MAX4445, A

VCL

≥ +2V/V)

♦ 550MHz -3dB Bandwidth

♦ -60dB SFDR at 5MHz

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

♦ Low Noise: 25nV/

√

Hz at f

= 100kHz

♦ Low-Power Disable Mode Reduces Quiescent

Current to 3.5mA

MAX4444/MAX4445

________________________________________________________________

Maxim Integrated Products

GND

OUT

REF

TOP VIEW

MAX4444

MAX4445

IN-

IN+

N.C. (RG)

( ) ARE FOR MAX4445 ONLY.

75Ω

0.1µF

GND

IN-

IN+

SIGNAL

INPUT

OUTPUT

REF

+5V

-5V

OUT

MAX4444

0.1µF

Typical Operating Circuit

19-1543; Rev 0; 10/99

EVALUATION KIT AVAILABLE

Pin Configuration

Ordering Information

PART

MAX4444ESE

MAX4445ESE

-40°C to +85°C

TEMP. RANGE PIN-PACKAGE

16 Narrow SO

Summary of content (8 pages)

PAGE 1
9-1543; Rev 0; 10/99 ILABLE N KIT AVA EVALUATIO Ultra-High-Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable Features ♦ 5000V/µs Slew Rate (MAX4444) ♦ +2V/V Internally Fixed Gain (MAX4444) ♦ External Gain Selection (MAX4445, AVCL ≥ +2V/V) ♦ 550MHz -3dB Bandwidth ♦ -60dB SFDR at 5MHz ♦ Low Differential Gain/Phase: 0.07%/0.05° ♦ Low Noise: 25nV/√Hz at fIN = 100kHz ♦ Low-Power Disable Mode Reduces Quiescent Current to 3.
PAGE 2
MAX4444/MAX4445 Ultra-High-Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable ABSOLUTE MAXIMUM RATINGS VCC to VEE ...........................................................................+12V Voltage on IN+, IN-, EN, OUT+, OUT-, RG, REF..............................(VEE - 0.3V) to (VCC + 0.3V) Current Into IN+, IN-, RG, EN .............................................20mA Output Short-Circuit Duration ...........................
PAGE 3
Ultra-High Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable MAX4444/MAX4445 AC ELECTRICAL CHARACTERISTICS (VCC = +5V, VEE = -5V, VEN = 5V, RL = 100Ω, REF = GND, AVCL = +2V/V, TA = +25°C, unless otherwise noted.) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS Small-Signal -3dB Bandwidth BWSS VOUT = 100mVp-p 550 MHz Large-Signal -3dB Bandwidth BWLS VOUT = 2Vp-p 500 MHz VOUT = 100mVp-p 80 MHz 0.
PAGE 4
Typical Operating Characteristics (VCC = +5V, VEE = -5V, VEN = 5V, VIN = VIN+ - VIN-, RL = 100Ω, REF = GND, AV = +2V/V, TA = +25°C, unless otherwise noted.) 3 3 0.9 2 0.7 0.5 -1 GAIN (dB) 0.6 0 GAIN (dB) 1 1 0 -1 -2 -2 -3 -3 -4 -5 1M 10M 100M 0 1M 10M 100M 100k 1G 10M 100M 1G FREQUENCY (Hz) FREQUENCY (Hz) MAX4445 GAIN FLATNESS vs. FREQUENCY MAX4444 LARGE-SIGNAL GAIN vs. FREQUENCY MAX4445 LARGE-SIGNAL GAIN vs. FREQUENCY 2 0.2 1 GAIN (dB) 0.3 0.
PAGE 5
Ultra-High-Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable MAX4445 LARGE-SIGNAL PULSE RESPONSE MAX4444 DIFFERENTIAL GAIN AND PHASE SLEW RATE vs. OUTPUT VOLTAGE SWING MAX4444 4000 0.01 0 -0.01 -0.02 -0.03 -0.04 -0.05 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 IRE MAX4445 HARMONIC DISTORTION vs. FREQUENCY MAX4444 HARMONIC DISTORTION vs.
PAGE 6
Typical Operating Characteristics (continued) (VCC = +5V, VEE = -5V, VEN = 5V, VIN = VIN+ - VIN-, RL = 100Ω, REF = GND, AV = +2V/V, TA = +25°C, unless otherwise noted.) VOLTAGE SWING vs. LOAD RESISTANCE 3.70 100 MAX4444/45toc22 100 CURRENT NOISE (pA/√Hz) MAX4444 3.75 MAX4444/45toc21 MAX4445 3.80 INPUT CURRENT NOISE DENSITY vs. FREQUENCY 1000 VOLTAGE NOISE (nV/√Hz) OUTPUT VOLTAGE (V) 3.85 INPUT VOLTAGE NOISE DENSITY vs. FREQUENCY MAX4444/45toc20 3.90 10 3.65 10 3.
PAGE 7
Ultra-High-Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable 6 4 43 42 41 40 39 38 EN = GND 4 3 2 1 37 2 5 QUIESCENT CURRENT (mA) 8 EN = 5V 44 MAX4444/45toc30 10 45 QUIESCENT CURRENT (mA) MAX4444/45toc29 12 INPUT BIAS CURRENT (µA) QUIESCENT CURRENT vs. TEMPERATURE QUIESCENT CURRENT vs. TEMPERATURE MAX4444/45toc31 INPUT BIAS CURRENT vs.
PAGE 8
MAX4444/MAX4445 Ultra-High-Speed, Low-Distortion, Differentialto-Single-Ended Line Receivers with Enable IN+ RG RISO RGAIN MAX4444 MAX4445 MAX4445 RG GAIN = 1 + 600 RGAIN Figure 1. Setting the Amplifier Gain CLOAD IN– Figure 2.