TDA7348D 查看數據表（PDF） - STMicroelectronics

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TDA7348D

Digitally controlled audio processor

STMicroelectronics 

Electrical characteristics

2

Electrical characteristics

TDA7348

Table 1.

Symbol

Electrical characteristics

VS = 9V; RL = 10KΩ; Rg = 50Ω; Tamb = 25°C; all controls flat (G = 0.3dB step

0dB); f = 1KHz. Refer to the test circuit, unless otherwise specified.

Parameter

Test Condition

Min. Typ. Max. Unit

Input selector

RI

VCL

SI

RL

GI MIN

GI MAX

Gstep

eN

Input resistance

Clipping level

Input separation

Output load resistance

Minimum input gain

Maximum input gain

Step resolution

Input noise

VDC DC steps

Volume control (1 + 2)

RI

GMAX

AMAX

ASTEPC

Input resistance

Maximum gain

Maximum attenuation

Step resolution coarse

attenuation

ASTEPF

Step resolution fine

attenuation

EA Attenuation set error

Et Tracking error

VDC DC steps

Zero crossing mute

Zero crossing threshold

VTH

AMUTE Mute attenuation

VDC DC step

70 100 130 KΩ

d ≤ 0.3%

2.1 2.6

80 100

VRMS

dB

2

KΩ

-0.75 0 0.75 dB

10.25 11.25 12.25 dB

2.75 3.75 4.75 dB

20Hz to 20 KHz unweighted

2.3

μV

Adiacent gain steps

1.5 10 mV

GIMIN to GIMAX

3

mV

35 50

KΩ

18.75 20 21.25 dB

78.45

dB

0.5 1.25 2.0 dB

G = 20 to -20dB

G = -20 to -58dB

Adiacent attenuation steps

From 0dB to AMAX

0.11 0.31 0.51 dB

-1.25 0 1.25 dB

-3

2 dB

2 dB

-3 0

3 mV

0.5 5 mV

WIN = 11

WIN = 10

WIN = 01

WIN = 00

0dB to Mute

20

mV

40

mV

80

mV

160

mV

80 100

dB

0

3 mV

6/20

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