OKI Semiconductor
ML7041
Audio CODEC
FEDL7041-04
Issue Date: Mar. 2, 2006
GENERAL DESCRIPTION
The ML7041 is a single-channel full duplex CODEC LSI device which performs mutual transcoding between the
analog voice band signals ranging from 300 to 3400 Hz and the 64 kbps PCM serial data.
Provided with such functions as DTMF Tone generation, transmit/receive data gain control, side-tone path, and
low-dropout regulator, the ML7041 is best suited for telephone terminals in digital wireless systems.
FEATURES
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Single 3 V power supply
V
DD
: 2.4 to 3.3 V
Coding format: PCM
µ-law/PCM
A-law/14-bit linear mode selectable
PCM interface timing: Long frame synchronous timing/short frame synchronous timing selectable
Transmit/receive full-duplex operation
Serial PCM transmission data rate:
64 to 2048 kbps
Low power consumption
Operating mode:
15 mW typ. (V
DD
= 3.0 V)
Power-down mode:
3
µW
typ. (V
DD
= 3.0 V)
Master clock frequency:
2.048 MHz (compatible with PCM shift clock)
Analog output stage
100 mW (differential type) amplifier output for driving receiver speaker:
Capable of driving an 8
Ω
load.
6.6 mW (single type) amplifier output for driving earphones speaker:
Capable of driving a 32
Ω
load.
Built-in two low-dropout regulators (150 mA
×
2)
Built-in four general purpose drivers (150 mA
×
4)
Transmit/receive mute, transmit/receive programmable gain control
Built-in side tone path
Built-in DTMF tone generator
Transmit slope filter selectable
I
2
C bus interface (MCU interface)
Built-in transmit voice signal detector
Package: 48-pin plastic TQFP (TQFP48-P-0707-0.50-K) (ML7041 TB)
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