TS4975 Datasheet, PDF (5/33 Pages) STMicroelectronics – Stereo Headphone Drive Amplifier with Digital Volume Control via IC Bus

TS4975
Electrical Characteristics
Table 5. V_CC = +2.5 V, GND = 0V, T_amb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ.
Max.
Supply Current
No input signal, no load, Single Ended, Mode 1-4
I_CC
No input signal, no load, Single Ended, Mode 5-8
No input signal, no load, Phantom Ground, Mode 1-4
No input signal, no load, Phantom Ground, Mode 5-8
3
4.2
2
2.8
4.6 6.5
3.6 5.3
I_STANDBY
Standby Current (SCL and SDA at VCC level)
No input signal
0.6
2
Voo
Output Offset Voltage
No input signal, RL = 32Ω, Phantom Ground
5
50
Output Power
THD+N = 1% Max, f = 1kHz, RL = 16Ω, Single Ended
Po THD+N = 1% Max, f = 1kHz, RL = 32Ω, Single Ended
THD+N = 1% Max, f = 1kHz, RL = 16Ω, Phantom Ground
THD+N = 1% Max, f = 1kHz, RL = 32Ω, Phantom Ground
15
21
11
13
15
21
11
13
Total Harmonic Distortion + Noise, Av = 2dB
RL=32Ω, Po=10 mW, 20Hz < F < 20kHz, Single Ended
0.3
THD + N RL=16Ω, Po=15 mW, 20Hz < F < 20kHz, Single Ended
0.3
RL=32Ω, Po=10 mW, 20Hz < F < 20kHz, Phantom Ground
0.3
RL=16Ω, Po=15 mW, 20Hz < F < 20kHz, Phantom Ground
0.3
Power Supply Rejection Ratio⁽¹⁾
F = 217Hz, RL = 16Ω, Av = 2 dB
Vripple = 200mVpp, Input Grounded, Cb = 1µF, Single Ended
PSRR Output referenced to Phantom Ground
60
F = 217Hz, RL = 16Ω, Av = 2 dB
Vripple = 200mVpp, Input Grounded, Cb = 1µF, Single Ended
Output referenced to Ground
60
Channel Separation, RL = 32Ω, Av = 2 dB with Single Ended
F = 1kHZ, Po=10mW
103
Crosstalk
F = 20Hz to 20kHz, Po=10mW
Channel Separation, RL = 32Ω, Av = 2 dB with Phantom Ground
75
F = 1kHZ, Po=10mW
69
F = 20Hz to 20kHz, Po=10mW
69
Signal To Noise Ratio, A-Weighted, Av=2dB, RL=32Ω,
SNR
Po=12mW
Single Ended
88
Phantom Ground
88
Output Noise voltage, A-Weighted, Av=2dB
ONoise Single Ended
23
Phantom Ground
23
G
Digital Gain Range In1 & In2 to Out1 & Out2
-34
+18
Digital Gain Stepsize
4
Gain error tolerance
-1
+1
Zin In1 & In2 Input Impedance, All Gain setting
25.5 30 34.5
Twu Wake up time, Cb=1µF
110 180
Tws Standby time
1
1. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to Vcc @ F = 217Hz
Unit
mA
µA
mV
mW
%
dB
dB
dB
µVrms
dB
dB
dB
kΩ
ms
µs
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