TS4974

Electrical Characteristics

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2

Electrical Characteristics

Table 3: V

Symbol

Parameter

Min.

Typ.

Max.

Unit

Supply Current

No input signal, no load

3.2

mA

Standby Current

No input signal, Vstdby = Gnd, RL = 8

Ω

300

2000

nA

Voo

Output Offset Voltage

No input signal, RL = 8

Ω, Floating inputs

520

mV

Po

Output Power

THD = 1% Max, f = 1kHz, RL = 8

Ω

0.8

1

W

THD + N

Total Harmonic Distortion + Noise

Po = 500mW rms,

20Hz < F < 20kHz, RL = 8

Ω, 0dB gain, Cb=1µF, Cin=330nF

0.5

%

PSRR

F = 217Hz, RL = 8

Ω, )

Vripple = 200mVpp, Input Grounded, Cb=1µF, Cin=330nF

1)

Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz.

75

85

dB

CMRR

F = 217Hz, RL = 8

Ω,

Vincm = 200mVpp, Cb = 1µF, Cin=330nF

2)

Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).

45

61

dB

SNR

Signal-to-Noise Ratio ( Weighted A, 6dB gain )

( RL = 8

Ω, THD + N ≤ 0.5%, 20Hz < F < 20kHz)

100

dB

Gs

Start up Gain

-12

dB

G

Digital Gain Range

-33

+12

dB

Gain Step

size

3dB

Gain accu-

racy

-1

+1

dB

Twu

Wake-up Time

15

ms

Output Voltage Noise F = 20Hz to 20kHz, RL = 8

Ω

Unweighted

Weighted A

21

17

µV

RMS

Zin

Differential input impedance

48

60

75

k

Ω

Debouncing time

10

ms

160

ms

During autorepeat mode, necessary time to cover the whole gain

range

2500

ms