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MSM7532

Single Chip MSK Modem with Compandor for Cordless Telephone

Oki Electric Industry 

¡ Semiconductor

MSM7532

Voice Signal Processing Characteristics (Continued) (VDD = 2.1 V to 5.5 V, Ta = –30 to 70°C)

Parameter

Symbol

Condition

Min Typ Max Unit

Output Resistance

ROC

— 40 — W

Output Load Resistance RLC

Ceramic

Receiver

Amplifier

Receiver Equivalent

Capacitance

CCR

(RCP, RCN)

Output Level

VCR

—

fIN = 1 kHz, Distortion Ratio

£ –30 dB, VDD = 2.4 V

1.35 1.5 — kW

— 68 75 nF

— — –4 dBV

Output Distortion

HDC

fIN = 1 kHz, –18 dBV

— –68 –45 dB

Output Resistance

ROU

— 40 — W

User-

Available

Output Load

Resistance

RLU

—

2 — — kW

Amplifier

(UAO)

Output

Level

VOU

Distortion Ratio VDD = 2.1 V to 5.5 V —

£ –30 dB VDD = 4.5 V to 5.5 V —

—

—

–6

dBV

0

Output Distortion Ratio HDU

fIN = 1 kHz, –18 dBV

— –64 –45 dB

Input Reference Level VICS

fIN = 1 kHz, R7 = R8

–19.8 –17.8 –15.8 dBV

GC2

–20 dB –10.7 –10 –9.3

Output Level *1

Compressor

GC4 fIN = 1 kHz, R7 = R8 –40 dB –21.2 –20 –18.8 dB

GC6

–60 dB — –30 —

Attack Time

Recovery Time

TAT1

TRE1

Input Level, –34 dBV Æ –22 dBV —

Input Level, –22 dBV Æ –34 dBV —

3.0

16

—

—

ms

Input Reference Level VIES

fIN = 1 kHz, R7 = R8

–19.8 –17.8 –15.8

Maximum Input

Level

VIEM1

VIEM2

R7 = R8 VDD = 2.1 V to 5.5 V —

VDD = 4.5 V to 5.5 V —

— –15 dBV

— –12

Expander

Output Level *1

GE1

–10 dB –21.5 –20 –18.5

GE2 fIN = 1 kHz, R7 = R8 –20 dB –42.2 –40 –37.8 dB

GE25

–25 dB — –50 —

Attack Time

Recovery Time

TAT2

TRE2

Input Level, –26 dBV Æ –20 dBV —

Input Level, –20 dBV Æ –26 dBV —

3.0

16

—

—

ms

Electronic Volume Gain

GEV1

GEV2

GEV3

VOL1 = VOL2 = "0"

Referenced to RVO

level at "0"

+6 dB +5.5 +6.0 +6.5

–6 dB –6.5 –6.0 –5.5 dB

–12 dB –12.5 –12.0 –11.5

*1: 0 dB is defined as the input level and the output level when the standard input level is input.

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