TDA7407D datasheet(4/34 Pages) STMICROELECTRONICS

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TDA7407D

4/34

AUDIO PROCESSOR PART

4.0.1 Input Multiplexer

■ Quasi-differential CD and cassette stereo input

■ AM mono input

■ Phone inverting input

■ Multiplexer signal after In-Gain available at

separate pins

4.0.2 Volume control

■ 1dB attenuator

■ Max. gain 15dB

■ Max. attenuation 79dB

4.0.3 Bass Control

■ 2nd order frequency response

■ Q-factor programmable in 4 steps

■ Center frequency programmable in 4(5) steps

■ DC gain programmable

■ ±15 x 1dB steps

4.0.4 Mid Control

■ 2

nd order frequency response

■ Q-factor programmable in 2 steps

■ Center frequency programmable in 4 steps

■ ±15 x1dB steps

4.0.5 Treble Control

–2nd order frequency response

– Center frequency programmable in 4 steps

– ±15 x 1dB steps

4.0.6 Speaker Control

■ 4 independent speaker controls in 1dB steps

■ max gain 15dB

■ max. attenuation 79dB

4.0.7 Mute Functions

■ Direct mute

■ Digitally controlled softmute with 4

programmable mute time.

4.1

ELECTRICAL CHARACTERISTICS

Table 6. Electrical Characteristics

(VS = 9V; Tamb = 25°C; RL = 10K

Ω; all gains = 0dB; f = 1KHz; unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INPUT SELECTOR

Rin

Input Resistance

all inputs except Phone

100

130

Ω

VCL

Clipping Level

2.2

2.6

VRMS

SIN

Input Separation

100

GIN MIN

Min. Input Gain

-1

GIN MAX

Max. Input Gain

GSTEP

Step Resolution

0.5

1.5

VDC

DC Steps

Adjacent Gain Step

-5

0.5

GMIN to GMAX

-10

DIFFERENTIAL CD STEREO INPUT

Rin

Input Resistance

Differential

100

130

Ω

Common Mode

100

130

Ω

CMRR

Common Mode Rejection Ratio

VCM = 1VRMS @ 1KHz

VCM = 1VRMS @ 10KHz

Output Noise @ Speaker

Outputs

20Hz to 20KHz flat; all stages 0dB

615

PHONE INPUT

Rin

Input Resistance

Ω

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