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MSM7544

Single Rail CODEC

Oki Electric Industry 

¡ Semiconductor

ABSOLUTE MAXIMUM RATINGS

Parameter

Power Supply Voltage

Analog Input Voltage

Digital Input Voltage

Storage Temperature

Symbol

VDD

VAIN

VDIN

TSTG

Condition

—

—

—

—

MSM7543/7544

Rating

Unit

0 to 7

V

–0.3 to VDD + 0.3

V

–0.3 to VDD + 0.3

V

–55 to +150

°C

RECOMMENDED OPERATING CONDITIONS

Parameter

Power Supply Voltage

Operating Temperature

Analog Input Voltage

Symbol

Condition

VDD Voltage must be fixed

Ta

—

VAIN Connect AIN– and GSX

Min.

4.75

–30

—

Typ.

5.0

+25

—

Max.

5.25

+85

2.4

Unit

V

°C

VPP

Digital Input High Voltage

Digital Input Low Voltage

VIH XSYNC, RSYNC, BCLOCK,

PCMIN, PDN, TMC

VIL

2.2

—

VDD

V

0

—

0.8

V

64, 128, 256, 512, 1024,

Clock Frequency

FC BCLOCK

2048, 96, 192, 384, 768,

kHz

1536, 1544, 200

Sync Pulse Frequency

FS XSYNC, RSYNC

6.0

8.0

10.0 kHz

Clock Duty Ratio

DC BCLOCK

40

50

60

%

Digital Input Rise Time

tIr XSYNC, RSYNC, BCLOCK,

—

—

50

ns

Digital Input Fall Time

tIf PCMIN, PDN, TMC

—

—

50

ns

Transmit Sync Pulse Setting Time tXS BCLOCKÆXSYNC, See Timing Diagram 100

—

tSX XSYNCÆBCLOCK, See Timing Diagram 100

—

—

ns

—

ns

Receive Sync Pulse Setting Time

tRS BCLOCKÆRSYNC, See Timing Diagram 100

—

tSR RSYNCÆBCLOCK, See Timing Diagram 100

—

—

ns

—

ns

Sync Pulse Width

tWS XSYNC, RSYNC

1 BCLK —

100 ms

PCMIN Set-up Time

tDS

—

100

—

—

ns

PCMIN Hold Time

tDH

—

100

—

—

ns

Digital Output Load

RDL Pull-up resistor

CDL

—

0.5

—

— kW

—

—

100 pF

Transmit gain stage, Gain = 1 –100

—

+100 mV

Analog Input Allowable DC Offset Voff Transmit gain stage, Gain = 10 –10

—

+10 mV

Allowable Jitter Width

— XSYNC, RSYNC, BCLOCK

—

—

500 ns

8/19

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