MSM7702-01 Oki Semiconductor, MSM7702-01 Datasheet

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MSM7702-01

Manufacturer Part Number
MSM7702-01
Description
Single Rail CODEC
Manufacturer
Oki Semiconductor
Datasheet

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E2U0018-28-81
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MSM7702-01/02/03
Single Rail CODEC
GENERAL DESCRIPTION
The MSM7702 is a single-channel CODEC CMOS IC for voice signals ranging from 300 to 3400
Hz with filters for A/D and D/A conversion.
Designed especially for a single-power supply and low-power applications, the device is
optimized for telephone terminals in digital wireless systems or ISDN systems.
The MSM7702 utilizes low-voltage operational amplifiers (Op-amps) to provide low-power
consumption.
The device uses the same transmission clocks as those used in the MSM7508B and MSM7509B.
The analog output signal can directly drive a piezoelectric type handset receiver.
FEATURES
• Single power supply: +2.7 V to +3.8 V
• Low power consumption
• ITU-T Companding law
• Built-in PLL eliminates a master clock
• Serial data rate: 64/128/256/512/1024/2048 kHz
• Adjustable transmit gain
• Built-in reference voltage supply
• Analog output can directly drive a load equivalent to 1.2 kW
• Pin-for-pin compatible with the MSM7578 and MSM7579
• Package options:
Operating mode:
Power save mode:
Power down mode:
24-pin plastic SOP (SOP24-P-430-1.27-K)
20-pin plastic SSOP (SSOP20-P-250-0.95-K) (Product name : MSM7702-01MS-K)
MSM7702-01:
MSM7702-02:
MSM7702-03:
96/192/384/768/1536/1544/200 kHz
m/A-law pin selectable
m-law
A-law
0.05 mW Typ.
3.6 mW Typ.
15 mW Typ.
(Product name : MSM7702-01GS-K)
(Product name : MSM7702-02GS-K)
(Product name : MSM7702-03GS-K)
(Product name : MSM7702-02MS-K)
(Product name : MSM7702-03MS-K)
V
V
V
DD
DD
DD
= 3 V
= 3 V
= 3 V
Previous version: Nov. 1996
This version: Aug. 1998
MSM7702-01/02/03
1/17

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MSM7702-01 Summary of contents

Page 1

... Analog output can directly drive a load equivalent to 1.2 kW • Pin-for-pin compatible with the MSM7578 and MSM7579 • Package options: 24-pin plastic SOP (SOP24-P-430-1.27-K) 20-pin plastic SSOP (SSOP20-P-250-0.95-K) (Product name : MSM7702-01MS-K) This version: Aug. 1998 MSM7702-01/02/03 Previous version: Nov. 1996 ...

Page 2

... Semiconductor BLOCK DIAGRAM – AIN– LPF AIN+ GSX SGC SG GEN SG – AOUT + SG 8th AD TCONT BPF CONV. AUTO PLL ZERO VR GEN RTIM 5th DA RCONT LPF CONV. PWD PWD Logic MSM7702-01/02/03 PCMOUT XSYNC BCLK RSYNC (ALAW) PCMIN PDN 2/17 ...

Page 3

... AOUT PDN 10 RSYNC 11 PCMIN connect pin 24-Pin Plastic SOP * The ALAW pin is only applied to the MSM7702-01GS-K/MSM7702-01MS-K. 24 AIN+ SGC 1 23 AIN– AOUT 3 21 GSX (ALAW)* NC ...

Page 4

... AIN– R2 – AIN AIN+ + AIN– – GSX above and below the signal ground PP MSM7702-01/02/ variable R2 > > 1/(2 ¥ 3.14 ¥ 30 ¥ R1) Gain = R2/R1 £ > > > > ¥ 3.14 ¥ 30 ¥ R5) Gain = £ 10 4/17 ...

Page 5

... However, if the frequency characteristic of an applied system is not specified exactly, this device can operate in the range of 8 kHz 2 kHz, but the electrical characteristics in this specification are not guaranteed. Setting this signal to logic "1" or "0" drives both transmit and receive circuits to the power saving state. MSM7702-01/02/03 5/17 ...

Page 6

... PCMIN/PCMOUT MSM7702-02 (m-law) MSD MSM7702-01/02/03 MSM7702-03 (A-law) MSD 6/17 ...

Page 7

... ALAW Control signal input for the companding law selection. Provides only for the MSM7702-01GS-K/7702-01MS-K. The CODEC will operate in the m-law when this pin logic "0" level and the CODEC will operate in the A-law when this pin logic "1" level. The CODEC operates in the m-law if the pin is left open, since this pin is internally pulled down ...

Page 8

... WS t — — Pull-up resistor DL C — DL Transmit gain stage, Gain = 1 V off Transmit gain stage, Gain = 10 — XSYNC, RSYNC, BCLK MSM7702-01/02/03 Rating Unit –0 0 –0 0 –55 to +150 °C Min. Typ. Max. Unit 2 ...

Page 9

... Gain = 1 OSGX (V Symbol Condition R AOUT with respect to SG LAO C AOUT with respect to SG LAO V AOUT with respect to SG OAO V AOUT with respect to SG OSAO MSM7702-01/02/ –30°C to +85°C) DD Min. Typ. Max. Unit — — 0.01 0.05 — 1.2 3.0 0.45 ¥ — ...

Page 10

... – 1020 – – – – 1020 – – –55 MSM7702-01/02/ –30°C to +85°C) DD Min. Typ. Max. Unit 20 26 — –0.15 +0.1 +0.20 Reference –0.15 –0.04 +0.20 –0.15 +0.13 +0.20 0 0.5 0.80 –0.15 – ...

Page 11

... R1 500 *4 tgd R2 600 tgd R3 1000 0 tgd R4 2600 tgd R5 2800 CR T TRANS Æ RECV 1020 RECV Æ TRANS MSM7702-01/02/ –30°C to +85°C) DD Min. Typ. Max. Unit — –70.5 –68 dBmOp — –78 –74 0.338 0.35 0.362 Vrms 0.483 ...

Page 12

... PSR PSR R 50 kHz XD1 C = 100 XD2 t XD3 MSM7702-01/02/ –30°C to +85°C) DD Min. Typ. Max. Unit 30 32 — — –37.5 –35 dBmO — –52 –35 dBmO — 30 — ...

Page 13

... Fc, the Delay of the MSD bit is defined Receive Timing BCLK RSYNC t WS PCMIN MSD XD2 XD1 MSM7702-01/02/ XD3 13/17 ...

Page 14

... GSX AOUT PCMIN AIN+ BCLK SG 0.1 mF XSYNC SGC RSYNC AG PDN MSM7702-01/02/03 Digital interface +3 V PCM signal output PCM data input PCM shift clock input 8 kHz SYNC signal input Power Down control input "1" = Operation "0" = Power down 14/17 ...

Page 15

... Use a low noise (particularly, low level type of high frequency spike noise or pulse noise) power supply to avoid erroneous operation and the degradation of the characteristics of these devices. pin not lower than –0.3 V even instantaneously to avoid latch- MSM7702-01/02/03 15/17 ...

Page 16

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM7702-01/02/03 (Unit : mm) Package material Epoxy resin ...

Page 17

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM7702-01/02/03 (Unit : mm) Package material Epoxy resin ...

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