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.

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)