GENERAL DESCRIPTION

The ML7048 is a three-channel single rail CMOS CODEC LSI. This device contains filters for A-to-D and D-to-A conversions of voice signals ranging 300 to 3400 Hz.

The ML7048 is designed for a single power supply and low power applications and contains three-channel A-to-D and D-to-A converters on a single chip, and achieves a reduced footprint and external component parts. The ML7048 is best suited for ISDN terminal and digital telephone terminal applications.

FEATURES

• Single 5 V Power Supply Operation

• Using ∆-Σ ADC and DAC Technique

• Low Power Consumption

3-Channel Operating Mode: typical: 140 mW max.:174 mW

Power Saving Mode: (PDN = “1”, PDN1 to 3 = “0”) typical: 15 mW max.: 26 mW

Power Down Mode: (PDN = “0”) typical: 0.05 mW max.: 0.3 mW

• ITU-T Companding Law: µ-law

• PCM Interface:

3-Channel Independent or 3-Channel Continuous Serial Interface Pin Selectable

• Master Clock:

12.288 MHz or 15.360 MHz Pin Selectable

• Transmission Clocks:

64, 128, 256, 512, 1024, 2048 kHz

96, 192, 384, 768, 1536 kHz

• Adjustable Transmit Gain for Each Channel

• Built-in Reference Voltage Supply

• Differential Analog Output can Directly Drive a 600Ω Transformer.

• Package:

44-pin Plastic QFP (QFP44-P-910-0.80-2K) (Product name: ML7048-01GA)