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A21SP16J 数据表(PDF) 5 Page - STMicroelectronics

部件名 A21SP16J
功能描述  3 W filter-free class-D audio power amplifier
PDF  37 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A21SP16J 数据表(HTML) 5 Page - STMicroelectronics

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A21SP16
Electrical characteristics
37
3
Electrical characteristics
Table 5. VCC = +5V, GND = 0V, VIC = 2.5V, tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
ICC
Supply current
No input signal, no load
2.3
3.3
mA
ISTBY
Standby current (1)
No input signal, VSTBY = GND
10
1000
nA
VOO
Output offset voltage No input signal, RL =8
325
mV
Pout
Output power
G=6dB
THD = 1% max, F = 1kHz, RL =4
THD = 10% max, F = 1kHz, RL =4
THD = 1% max, F = 1kHz, RL =8
THD = 10% max, F = 1kHz, RL =8
2.3
3
1.4
1.75
W
THD + N
Total harmonic
distortion + noise
Pout =900mWRMS, G = 6dB, 20Hz < F < 20kHz
RL = 8W + 15µH, BW < 30kHz
Pout =1WRMS, G = 6dB, F = 1kHz,
RL = 8W + 15µH, BW < 30kHz
1
0.4
%
Efficiency Efficiency
Pout =2WRMS, RL =4 +  15µH
Pout =1.2WRMS, RL =8+  15µH
78
88
%
PSRR
Power supply
rejection ratio with
inputs grounded (2)
F = 217Hz, RL =8G=6dB
Vripple = 200mVpp
63
dB
CMRR
Common mode
rejection ratio
F = 217Hz, RL =8G = 6dB,
Vicm =200mVpp
57
dB
Gain
Gain value
Rin in k
V/V
RSTBY
Internal resistance
from Standby to GND
273
300
327
k
FPWM
Pulse width modulator
base frequency
180
250
320
kHz
SNR
Signal to noise ratio
A-weighting, Pout =1.2W, RL =8
85
dB
tWU
Wake-up time
5
10
ms
tSTBY
Standby time
5
10
ms
273k
R
in
------------------
300k
Rin
------------------
327k
Rin
------------------



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