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

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

INPUT STAGE: AUX1

Input Resistance

37.5

50

62.5

K

Ω

Clipping Level

d

≤ 0.3%

2.1

2.6

Input Separation

80

100

dB

GAIN CONTROL

Maximum Input Gain

20

dB

Maximum Attenuation

79

dB

Step Resolution

0.5

1

1.5

dB

Attenuation Set Error

G = -20 to +20dB

-1.25

0

+1.25

dB

G = -60 to -20dB

-4

3

dB

Tracking Error

2dB

DC Steps

Adiacent Attenuation Steps

0.1

3

mV

0.5

5

mV

AUDIO OUTPUT (Pin 8 - 9, 10 - 14)

Clipping Level

d = 0.3%

2.1

2.6

Vrms

Output Load Resistance

AC coupled

2

K

Ω

Output Impedance

30

100

Ω

DC Voltage Level

4.2

4.5

4.8

V

STAGE: HP FILTER

R1

Resistance at pin HP1

HIGHPASS BYTE = XXXX1000

127.5

170

212.5

K

Ω

R2

Resistance at pin HP2

1

M

Ω

Clipping Level

d

≤ 0.3%

2.1

2.6

Vrms

MUTE

Mute Attenuation

80

100

dB

Mute Threshold

1.2

1.7

2.2

V

Pullup Resistor (pin 3)

(note 1)

37.5

50

62.5

K

Ω

GENERAL

Supply Voltage

6

9

10.2

V

Supply Current

7

8

9

mA

PSRR

Power Supply Rejection Ratio

f = 1KHz

60

70

dB

Output Noise

Non Inverting Output Muted (B =

20 to 20kHz flat)

3.5

15

µV

All Gains 0dB (B = 20 to 20kHz

flat)

515

µV

S/N

Signal to Noise Ratio

106

dB

Channel Separation

80

100

dB

d

Distortion

0.01

0.08

%

BUS INPUTS

Input Low Voltage

0.8

V

Input High Voltage

2.5

V

Input Current

-5

5

µA

Output Voltage SDA

Acknowledge

0.1

0.4

V

Note 1: Internal pullup resistor to 3.3V; ”LOW” = mute active

TDA7401

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