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

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INPUT SELECTOR (MONO AND STEREO INPUTS)

Input Resistance

pin 7 to 11 and 15 to 18

70

100

130

K

Ω

Clipping Level

d

≤ 0.3%

2.1

2.6

Input Separation

80

95

dB

Output Load Resistance

2

K

Ω

Minimum Input Gain

-0.75

0

+0.75

dB

Maximum Input Gain

14

15

16

dB

Step Resolution

0.5

1.0

1.5

dB

Set Error

-1.0

0

1.0

dB

DC Steps

Adiacent Gain Steps

0.5

10

mV

3mV

DIFFERENTIAL INPUT (Pin 5, 6, 13, 14)

Input Resistance

Input selector BIT D4 = 0 (0dB)

10

15

20

K

Ω

Input selector BIT D4 = 1(-6dB)

14

20

26

K

Ω

CMRR

Common Mode Rejection Ratio

f =1KHz

45

70

dB

d

Distortion

0.01

0.08

%

Input Noise

20Hz to 20KHz; Flat; D6 = 0

5

µV

Differential Gain

D4 = 0

-1

0

1

dB

D4 = 1

-7

-6

-5

dB

VOLUME CONTROL

Input Resistance

Pin 2 and 20

31

44

57

K

Ω

Maximum Gain

15

16

17

dB

Maximum Attenuation

61

63.75

66.5

dB

Step Resolution Coarse Atten.

0.5

1.0

1.5

dB

Attenuation Set Error

G = 16 to -20dB

-1.0

0

1.0

dB

G = -20 to -63dB

-2.75

2.75

dB

Tracking Error

2dB

DC Steps

Adjacent Gain Steps

-5

+5

mV

Adjacent Attenuation Steps

-3

+3

mV

0.5

5

mV

LOUDNESS CONTROL (Pin 4, 12)

Internal Resistor

Loud = On

35

50

65

K

Ω

Maximum Attenuation

19

20

21

dB

Step Resolution

0.5

1

1.5

dB

ZERO CROSSING MUTE

Zero Crossing Threshold

(note 1)

WIN = 11

30

mV

WIN = 10

60

mV

WIN = 01

110

mV

WIN = 00

220

mV

Mute Attenuation

80

100

dB

DC Step

0dB to Mute

0.1

3

mV

TDA7437

4/23