TS4984 Datasheet, PDF (4/29 Pages) STMicroelectronics – 2 x 1W Stereo audio power amplifier with active low standby mode

TS4984
Electrical characteristics
3 Electrical characteristics
Table 4: Electrical characteristics for V_CC = +5V, GND = 0V, T_amb = 25°C (unless otherwise
specified)
Symbol
Parameter
Min. Typ. Max. Unit
I_CC
Supply Current
No input signal, no load
I_STANDBY
Standby Current ¹
No input signal, Vstdby = G_ND, RL = 8Ω
Voo
Output Offset Voltage
No input signal, RL = 8Ω
P_out
Output Power
THD = 1% Max, F = 1kHz, RL = 8Ω
THD + N
Total Harmonic Distortion + Noise
Po = 1Wrms, Av = 2, 20Hz ≤ F ≤ 20kHz, RL = 8Ω
PSRR
Power Supply Rejection Ratio²
RL = 8Ω, Av = 2, Vripple = 200mVpp, Input Grounded
F = 217Hz
F = 1kHz
Channel Separation, R_L = 8Ω
Crosstalk F = 1kHz
F = 20Hz to 20kHz
T_WU Wake-Up Time (Cb = 1µF)
T_STDB Standby Time (Cb = 1µF)
V_STDBH Standby Voltage Level High
V_STDBL Standby Voltage Level Low
Φ_M
Phase Margin at Unity Gain
R_L = 8Ω, C_L = 500pF
Gain Margin
GM
R_L = 8Ω, C_L = 500pF
GBP
Gain Bandwidth Product
R_L = 8Ω
7.4
12
mA
10 1000
nA
1
10
mV
0.8
1
W
0.2
%
55
62
dB
55
64
-92
dB
-70
90
130
ms
10
µs
1.3
V
0.4
V
65
Degrees
15
dB
1.5
MHz
1) Standby mode is activated when Vstdby is tied to Gnd.
2) All PSRR data limits are guaranteed by production sampling tests
Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon Vcc.
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