(G = 0.3dB step 0dB); f = 1KHz. Refer to the test circuit, unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INPUT SELECTOR

Input Resistance

70

100

130

K

Ω

Clipping Level

d

≤ 0.3%

2.1

2.6

Input Separation

80

100

dB

Output Load Resistance

2

K

Ω

Minimum Input Gain

-0.75

0

0.75

dB

Maximum Input Gain

10.25

11.25

12.25

dB

Step Resolution

2.75

3.75

4.75

dB

Input Noise

20Hz to 20 KHz unweighted

2.3

µV

DC Steps

Adiacent Gain Steps

1.5

10

mV

3mV

VOLUME CONTROL (1 + 2)

Input Resistance

35

50

K

Ω

Maximum Gain

18.75

20

21.25

dB

Maximum Attenuation

78.45

dB

Step Resolution Coarse

Attenuation

0.5

1.25

2.0

dB

Step Resolution Fine Attenuation

(Only Volume 1)

0.11

0.31

0.51

dB

Attenuation Set Error

G = 20 to -20dB

-1.25

0

1.25

dB

G = -20 to -58dB

-3

2

dB

Tracking Error

2dB

DC Steps

Adiacent Attenuation Steps

-3

0

3

mV

0.5

5

mV

ZERO CROSSING MUTE

Zero Crossing Threshold

(note 1)

WIN = 11

20

mV

WIN = 10

40

mV

WIN = 01

80

mV

WIN = 00

160

mV

Mute Attenuation

80

100

dB

DC Step

0dB to Mute

0

3

mV

SOFT MUTE

Mute Attenuation

45

60

dB

ON Delay Time

0.7

1

1.7

ms

20

35

55

ms

OFF Current

25

50

75

µA

1

µA

Soft Mute Threshold

1.5

2.5

3.5

V

Pullup Resistor (pin 22)

(note 2)

35

50

65

K

Ω

(pin 22) Level High

Soft Mute Active

3.5

V

(pin 22) Level Low

1V

TDA7348

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