General Description

The ML2021 is a monolithic analog line equalizer for telephone applications. The ML2021 consists of a switched capacitor filter that realizes a family of frequency response curves optimized for telephone line equalization while minimizing group delay.

Features

• Slope, height, and bandwidth adjustable

• Optimized group delays (500 Hz to 6.4 kHz)

• On chip anti-alias filter

• Bypass mode

• Low supply current 6 mA typical from ±5V supplies

• TTL / CMOS compatible interface

• Double buffered data latch

• Selectable master clock 1.544 or 1.536 MHz

• Synchronous or asynchronous data loading capability

• Compatible with ML2003 and ML2004 logarithmic gain/attenuator