ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Monitor Out Gain

Vol Ctrl > 4.5V; Zload > 30K

Ω

-1.5

0

1.5

dB

Attenuation at Minimum Volume

Vol Ctrl < 0.5V

80

dB

BW

0.6

MHz

Total Output Noise

f = 20Hz to 22KHz

Play, max volume

500

800

µV

f = 20Hz to 22KHz

Play, max attenuation

100

250

µV

f = 20Hz to 22KHz

Mute

60

150

µV

SR

Slew Rate

5

8

V/

µs

Input Resistance

22.5

30

K

Ω

Variable Output Resistance

30

100

Ω

Variable Output Load

2

K

Ω

SVR

Supply Voltage Rejection

f = 1kHz; max volume

35

39

dB

f = 1kHz; max attenuation

55

65

dB

Thermal Muting

150

°C

Thermal Shut-down

160

°C

MUTE STAND-BY & INPUT SELECTION FUNCTIONS

Stand-by ON threshold

3.5

V

Stand-by OFF threshold

1.5

V

Mute ON Threshold

3.5

V

Mute OFF Threshold

1.5

V

Quiescent Current @ Stand-by

0.6

1

mA

Mute Attenuation

50

65

dB

Stand-by bias current

80

µA

µA

Play or Mute

-20

-5

µA

Mute bias current

Mute

1

5

µA

Play

0.2

2

µA

APPLICATION SUGGESTIONS

The recommended values of the external components are those shown on the application circuit of fig-

ure 1a. Different values can be used, the following table can help the designer.

COMPONENT

SUGGESTION

VALUE

PURPOSE

LARGER THAN

SUGGESTION

SMALLER THAN

SUGGESTION

R1

300K

Volume control circuit

Larger volume regulation

time

Smaller volume regulation

time

R2

10K

Mute time constant

Larger mute on/off time

Smaller mute on/off time

P1

50K

Volume control circuit

C1

1000

µF

Supply voltage

bypass

Danger of oscillation

C2

470nF

Input DC decoupling

Lower low frequency cutoff

Higher low frequency cutoff

C3

470nF

Input DC decoupling

Lower low frequency cutoff

Higher low frequency cutoff

C4

470

µF

Ripple rejection

Better SVR

Worse SVR

C5

100nF

Volume control time

costant

Larger volume regulation

time

Smaller volume regulation

time

C6

1000

µF

Output DC decoupling Lower low frequency cutoff

Higher low frequency cutoff

C7

1

µF

Mute time costant

Larger mute on/off time

Smaller mute on/off time

C8

1000

µF

Output DC decoupling Lower low frequency cutoff

Higher low frequency cutoff

C9

100nF

Supply voltage

bypass

Danger of oscillation

TDA7496

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