1 Features

1• High Output Drive

– 19.2 VPP Differential Output Voltage,

RL = 50 Ω

– 9.6 VPP Single-ended Output Voltage,

RL = 25 Ω

• High Output Current

– ±200 mA @ V O = 9 VPP, VS = 12 V

• Low Distortion

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

RL = 25Ω

– 98 dB SFDR @ 1MHz, VO = 2 VPP,

RL = 100 Ω

• High Speed

– 90 MHz 3 dB Bandwidth (G = 2)

– 135 V/μs Slew Rate

• Low Noise

– 3.1 nV/√Hz: Input Noise Voltage

– 1.8 pA/√Hz: Input Noise Current

• Low Supply Current: 7.2mA/amp

• Single-supply Operation: 5 V to 12 V

• Stable for Gain of +2V/V or Higher

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

2 Applications

• ADSL PCI Modem Cards

• xDSL External Modems

• Line Drivers

3 Description

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

capable of driving signals to within 1 V of the power

supply rails. It features the high output drive with low

distortion required for the demanding application of a

single supply xDSL line driver.

When connected as a differential output driver, the

LMH6672 can drive a 50-Ω load to 16.8 VPP swing

with only −98 dBc distortion, fully supporting the peak

upstream power levels for upstream full-rate ADSL.

The LMH6672 is fully specified for operation with 5-V and 12-V supplies. Ideal for PCI modem cards and

xDSL modems.