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TS4956 数据表(PDF) 14 Page - STMicroelectronics

部件名 TS4956
功能描述  Stereo audio amplifier system with I2C bus interface
PDF  51 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TS4956 数据表(HTML) 14 Page - STMicroelectronics

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Electrical characteristics
TS4956
14/51
SNR
Signal To Noise Ratio
A-weighted, G = +1.5dB, THD+N < 0.5%,
20Hz < F < 20kHz
Mode 1 - Speaker output, RL =8Ω
Mode 2 - Speaker output, RL =8Ω
Mode 3 - Headphone output, RL =16Ω
Mode 4 - Headphone output, RL =16Ω
Mode 5 - MLO output, RL =16Ω
Mode 6 - MLO output, R = 16
Ω
Mode 7 - BTL, Speaker output, RL =8Ω,
G = +10.5dB
96
96
85
91
90
90
98
dB
G
Digital Gain Range
-34.5
+12
dB
Digital Gain Stepsize
1.5
dB
Stepsize Error
0.1
0.6
dB
Zin
Input Impedance, all Gain
setting
Differential input
Differential input impedance (MIP to MIN)
MIP input impedance referenced to ground
MIN input impedance referenced to ground
Stereo input
RIN input impedance
LIN input impedance
50
25.5
38
25.5
25.5
60
30
45
30
30
70
34.5
62
34.5
34.5
k
Ω
tWU
Wake up time
70
90
ms
tSTBY
Standby time
1
µs
1.
Internal power limitation on headphone outputs (see application information).
2.
Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is an added sinus signal to VCC @ F = 217Hz.
Table 12.
VCC = +5 V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Table 13.
Output noise VCC = 2.7V to 5.5V (all inputs grounded)
G = +12dB
G = +10.5dB
G = +1.5dB
A-weighted
filter
Unweighted
filter
(20Hz -
20kHz)
A-weighted
filter
Unweighted
filter
(20Hz -
20kHz)
A-weighted
filter
Unweighted
filter
(20Hz -
20kHz)
Vout (µV)
Vout (µV)
Vout (µV)
Vout (µV)
Vout (µV)
Vout (µV)
Mode1 - SPK out
54
80
67
100
45
66
Mode2 - SPK out
67
99
75
111
45
69
Mode3 - LHP, RHP
55
80
68
100
45
67
Mode4 - LHP, RHP
29
43
35
52
23
34
Mode5 - MLO
53
80
66
97
45
66
Mode6 - MLO
65
96
73
106
45
67
Mode7 - BTL, SPK out
29
42
35
52
23
34



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