FEDL7022-01-06

1Semiconductor

This version:

May 2000

Previous version: Sep. 1999

ML7022-01

Single Rail Dual Channel PCM CODEC

1/20

GENERAL DESCRIPTION

The ML7022 is a two-channel single-rail CODEC CMOS IC for voice signals ranging from 300 to 3400Hz. This

device contains two-channel analog-to-digital (A/D) and digital-to-analog (D/A) converters on a single chip. The

ML7022 is designed especially for a single power supply and low power applications and achieves a reduced

footprint.

The ML7022 is best suited for line card applications with easy interface to subscriber line interface circuits

(SLICs). The SLIC interface latches are embedded onto this CODEC, thus eliminating the need for external

components and optimizing board space.

FEATURES

• Single 5 V Power Supply Operation

• Using ∆-Σ ADC and DAC Technique

• Low Power Consumption

2-Channel Operating Mode:

typical:

70 mW

max.:

90 mW

1-Channel Operating Mode:

typical:

40 mW

max.:

55 mW

Power Saving Mode: (CPD1 = CPD2 = “0”)

typical:

9 mW

max.: 12.5 mW

Power Down Mode: (PDN = “0”)

typical: 0.05 mW

max.: 0.25 mW

• ITU-T Companding Law - µ-law

• Built-in Dual 3-bit Latches with CMOS Drive Capability

• Serial PCM Interface

• Master Clock: 4.096 MHz

• Transmission Clocks:

256 to 4096 kbps

• Adjustable Transmit Gain

• Built-in Reference Voltage Supply

• Analog Output can Directly Drive a 600Ω Line Transformer

• Latched Content Echo-back Function

• Package Type:

30-pin plastic SSOP (SSOP30-P-56-0.65-K) (Product name: ML7022-01MB)