TDA7448 datasheet(3/13 Pages) STMICROELECTRONICS

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TDA7448

ELECTRICAL CHARACTERISTCS

(refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10KΩ, RG = 600Ω, unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

SUPPLY

Supply Voltage

4.75

Supply Current

SVR

Ripple Rejection

INPUT STAGE

RIN

Input Resistance

Ω

VCL

Clipping Level

THD = 0.3%

2.5

Vrms

SIN

Input Separation

The selected input is grounded

through a 2.2

µ capacitor

VOLUME CONTROL

CRANGE

Control Range

AVMAX

Max. Attenuation

ASTEP

Step Resolution

0.5

1.5

Attenuation Set Error

AV = 0 to -24dB

-1

AV = -24 to -79dB

-2.0

2.0

Tracking Error

AV = 0 to -24dB

-1

AV = -24 to -79dB

-2

VDC

DC Step

adyacent attenuation steps

-3

Amute

Mute Attenuation

AUDIO OUTPUTS

VCLIP

Clipping Level

THD = 0.3%

2.5

Vrms

Output Load Resistance

Ω

VDC

DC Voltage Level

4.5

GENERAL

ENO

Output Noise

BW = 20Hz to 20KHz

All gains = 0dB, Flat

µV

S/N

Signal to Noise Ratio

All gains = 0dB; VO = 1Vrms

100

Channel Separation left/Right

THD

Distortion

AV = 0; VI = 1Vrms

0.01

0.1

BUS INPUT

VIl

Input Low Voltage

VIH

Input High Voltage

2.5

IIN

Input Current

VIN = 0.4V

-5

µA

Output Voltage SDA

Achnowledge

IO = 1.6mA

0.4

0.8

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