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MSM7705 Datasheet

  • MSM7705

  • OKI electronic componets [4ch Single Rail CODEC]

  • OKI

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E2U0042-28-81
隆 Semiconductor
MSM7705-01/02/03
隆 Semiconductor
4ch Single Rail CODEC
This version: Aug. 1998
MSM7705-01/02/03
Previous version: Nov. 1996
GENERAL DESCRIPTION
The MSM7705-01/02/03 are four-channel CODEC CMOS ICs for voice signals ranging from 300
to 3400 Hz. These devices contain filters for A/D and D/A conversion.
Designed especially for a single-power supply and low-power applications, these devices
contain four-channel A/D and D/A converters in a single chip and achieve a reduced footprint
and a reduced number of external components.
The MSM7705-01/02/03 are best suited for digital telephone terminals, digital PABXs, and push-
button phones.
FEATURES
鈥?Single power supply: +5 V
鈥?Power consumption
Operating mode:
70 mW Typ.
140 mW Max.
Power-saving mode:
14 mW Typ.
32 mW Max.
Power-down mode:
0.05 mW Typ.
0.3 mW Max.
鈥?Conforms to ITU-T Companding law
MSM7705-01:
m/A-law
pin-selectable
MSM7705-02:
m-law
MSM7705-03: A-law
鈥?Built-in PLL eliminates a master clock
鈥?The PCM interface can be switched between 4 channel serial/parallel
鈥?Transmission clock: 64/128/256/512/1024/2048 kHz
96/192/384/768/1536/1544 kHz
(During 4 channel serial mode, the 64, 96, 128, and 192 kHz clocks are
disabled)
鈥?Transmit gain adjustable for each channel
鈥?Built-in reference voltage supply
鈥?Analog output can directly drive a 600
W
line transformer
鈥?Package:
44-pin plastic QFP (QFP44-P-910-0.80-2K) (Product name : MSM7705-01GS-2K)
(Product name : MSM7705-02GS-2K)
(Product name : MSM7705-03GS-2K)
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