1 Features

· 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 @ VO = 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.