-

+

+

Note: Supply and Bypassing not shown.

1/2

LMH6672

-

Rf1

VIN

Rf2

+

-

1/2

LMH6672

AV

VIN

.

RO

12.5

1:N

(1.2)

RO

12.5

-

(VPP)

Rg

VOUT

RL = 100:

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LMH6672

SNOS957H – APRIL 2001 – REVISED AUGUST 2014

LMH6672 Dual, High Output Current, High Speed Op Amp

1 Features

2 Applications

1

•

High Output Drive

•

ADSL PCI Modem Cards

•

xDSL External Modems

–

19.2 VPP Differential Output Voltage,

RL = 50 Ω

•

Line Drivers

–

9.6 VPP Single-ended Output Voltage,

3 Description

RL = 25 Ω

The LMH6672 is a low cost, dual high speed op amp

•

High Output Current

capable of driving signals to within 1 V of the power

–

±200 mA @ VO = 9 VPP, VS = 12 V

supply rails. It features the high output drive with low

•

Low Distortion

distortion required for the demanding application of a

single supply xDSL line driver.

–

105 dB SFDR @ 100 kHz, VO = 8.4 VPP,

RL = 25Ω

When connected as a differential output driver, the

–

98 dB SFDR @ 1MHz, VO = 2 VPP,

LMH6672 can drive a 50-

Ω load to 16.8 VPP swing

RL = 100 Ω

with only

−98 dBc distortion, fully supporting the peak

upstream power levels for upstream full-rate ADSL.

•

High Speed

The LMH6672 is fully specified for operation with 5-V

–

90 MHz 3 dB Bandwidth (G = 2)

and 12-V supplies. Ideal for PCI modem cards and

–

135 V/µs Slew Rate

xDSL modems.

•

Low Noise

Device Information(1)

–

3.1 nV/

√Hz: Input Noise Voltage

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

1.8 pA/

√Hz: Input Noise Current

LMH6672

SOIC (8)

4.89 mm × 3.90 mm

•

Low Supply Current: 7.2mA/amp

(1) For all available packages, see the orderable addendum at

•

Single-supply Operation: 5 V to 12 V

the end of the datasheet.

•

Stable for Gain of +2V/V or Higher

•

Available in 8-pin SOIC and SO PowerPAD (DDA)

Typical Application

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.