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ST75C530

SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES FORTELEPHONY, MODEM, FAX OVERINTERNET & POTS LINES

STMicroelectronics 

ST75C530 - ST75C540

IV - ELECTRICAL SPECIFICATIONS (continued)

IV.4 - Modem Analog Interface

AVDD = DVDD = 5V, Tamb = 25oC

Measurement bandwidth is flat from 100Hz to 4800Hz ;Load impedance 10kΩ, 20pF

For differential output (TxA1/TxA2) : 0dBr = 1.77VRMS 1kHz sinwave (equivalent to 5VPP).

For single input (RxA) : 0dBr = 886mVRMS 1kHz sinwave (equivalent to 2.5VPP).

Symbol

Rxrin

Rxmac

Rxdc

Rxsndr

Rxin

Rxov

TxAdrl

TxAcl

TxArout

TxAmac

TxAdc

TxAov

Pin Name

RxA

TxA1/TxA2

Parameter

Input Impedance

Maximum AC Input Voltage = 0dBr

DC Reference Voltage

Signal to (Noise + Distortion), at -6dBr

Idle Noise

DC Offset Voltage (Input = VCM)

Minimum Differential Load

Maximum Differential Load

Output Impedance

Maximum AC Differential Output = 0dBr

DC Reference Voltage

DC Offset Voltage

Min.

100

75

-50

10

-200

Typ.

2.5

2.5

Max.

2.5

-81

100

20

100

5

200

Unit

kΩ

VPP

V

dB

dBr

mV

kΩ

pF

Ω

VPP

V

mV

TxAsndr

TxAin

Signal to (Noise + Distortion), at -6dBr

79

dB

Idle Noise

-85 dBr

IV.5 - Audio Analog Interface

AVDD = DVDD = 5V, Tamb = 25oC

Measurement bandwidth is flat from 100Hz to 4800Hz ;Load impedance 10kΩ, 20pF

For differential output (SPK1N/SPK1P, SPK2N/SPK2P, SPK3N/SPK3P) : 0dBr = 1.77VRMS 1kHz sinwave

(equivalent to 5VPP).

For single input (MIC1, MIC2, MIC3) : 0dBr = 886mVRMS 1kHz sinwave (equivalent to 2.5VPP).

Symbol

Pin Name

Parameter

Min. Typ. Max. Unit

RArin

RAmac

RAdc

MIC1,

MIC2,

MIC3

Input Impedance

Maximum AC Input Voltage = 0dBr

DC Reference Voltage

100

kΩ

2.5 VPP

2.5

V

RAdis

Distortion at -6dBr

2

%

RAin

Idle Noise

-81 dBr

RAov

TAdrl

TArout

TAmac

TAdc

SPK1N/SPK1P,

SPK2N/SPK2P,

SPK3N/SPK3P

DC Offset Voltage (Input = VCM)

Minimum Differential Load

Output Impedance

Maximum AC Differential Output = 0dBr

DC Reference Voltage

-50

50 mV

10

kΩ

100 Ω

5

VPP

2.5

V

TAov

DC Offset Voltage

-200

200 mV

TAdis

Distortion at -6dBr

1

%

TAin

Idle Noise

-81 dBr

11/84

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