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TS4974IQT View Datasheet(PDF) - STMicroelectronics

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TS4974IQT Datasheet PDF : 25 Pages
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TS4974
3
Electrical characteristics
Electrical characteristics
Table 4.
Symbol
VCC = +5 V, GND = 0 V, Tamb = 25° C (unless otherwise specified)
Parameter
Min. Typ. Max.
ICC Supply current, no input signal, no load
ISTBY
Standby current
No input signal, VSTBY = GND, RL = 8Ω
IU/D
Volume control UP/DOWN current
0 VU/D 0.3 VCC
Voo
Output offset voltage
No input signal, RL = 8 Ω, G=0 dB, floating inputs
Po
Output power
THD = 1% max, f = 1 kHz, RL = 8Ω
0.8
THD + N
PSRR
CMRR
Total harmonic distortion + noise
Po = 500 mW rms,
20 Hz < F < 20 kHz, RL = 8 Ω, G = 0 dB, Cb= 1 µF, Cin = 330 nF
Power supply rejection ratio(1)
F = 217Hz, RL = 8Ω)
Vripple = 200 mVpp, input grounded, Cb=1 µF, Cin=330 nF, G=0 dB
Common mode rejection ratio(2)
F = 217 Hz, RL = 8 Ω,
Vincm = 200 mVpp, Cb = 1 µF, Cin= 330 nF, G= 0 dB
SNR
Signal-to-noise ratio (weighted A, G= 0 dB)
(RL = 8 Ω, THD + N 0.5%, 20 Hz < F < 20 kHz)
Gs
Start up gain (when powered up from VCC - see Section 4.9:
Volume setting on page 20)
3.2 3.85
300 2000
10
5
20
1
0.5
85
61
100
-12
G Gain range
-33
+12
Gain step
size
3
Gain
accuracy
Tolerance between theoretical gain set and real gain
-1
+1
Wake-up time
twu
Cb=1 µF
10
Output voltage noise F = 20 Hz to 20 kHz, RL = 8 Ω, G= 0 dB
VN
Unweighted
21
A-weighted
14
Zin Differential input impedance
48
60
75
tdebounce Debouncing time
10
tautorepeat Time between volume changes
220
trange
During autorepeat mode, necessary time to cover the whole gain
range
3200
1. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to VCC @ F = 217 Hz.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).
Unit
mA
nA
µA
mV
W
%
dB
dB
dB
dB
dB
dB
dB
ms
µVRMS
kΩ
ms
ms
ms
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