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參數(shù)資料
| 型號： | TS4998IQT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 W, 2 CHANNEL, AUDIO AMPLIFIER, QCC16 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QFN-16 |
| 文件頁數(shù)： | 29/33頁 |
| 文件大小： | 488K |
| 代理商： | TS4998IQT |
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TS4998
Electrical characteristics
5/33
3
Electrical characteristics
Table 4.
VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply current
No input signal, no load, left and right channel active
7.4
9.6
mA
ISTBY
Standby current (1)
No input signal, VSTBYL = GND, VSTBYR = GND, RL = 8Ω
10
2000
nA
Voo
Output offset voltage
No input signal, RL = 8Ω
135
mV
Po
Output power
THD = 1% max, F = 1kHz, RL = 8Ω
800
1000
mW
THD + N
Total harmonic distortion + noise
Po = 700mWrms, G = 6dB, RL = 8Ω, 20Hz ≤ F ≤ 20kHz
0.5
%
PSRR
Power supply rejection ratio(2), inputs grounded
RL = 8Ω, G = 6dB, Cb = 1F, Vripple = 200mVpp
F = 217Hz
F = 1kHz
80
75
dB
CMRR
Common mode rejection ratio(3)
RL = 8Ω, G = 6dB, Cb = 1F, Vincm = 200mVpp
F = 217Hz
F = 1kHz
57
dB
SNR
Signal-to-noise ratio
A-weighted, G = 6dB, Cb = 1F, RL = 8Ω
(THD + N
≤ 0.5%, 20Hz < F < 20kHz)
108
dB
Crosstalk
Channel separation, RL = 8Ω, G = 6dB
F = 1kHz
F = 20Hz to 20kHz
105
80
dB
VN
Output voltage noise, F = 20Hz to 20kHz, RL = 8Ω, G=6dB
Cb = 1F
Unweighted
A-weighted
15
10
Vrms
Gain
Gain value (RIN in kΩ)
V/V
tWU
Wake-up time (Cb = 1F)
46
ms
tSTBY
Standby time (Cb = 1F)
10
s
ΦM
Phase margin at unity gain
RL = 8Ω, CL = 500pF
65
Degrees
GM
Gain margin, RL = 8Ω, CL = 500pF
15
dB
GBP
Gain bandwidth product, RL = 8Ω
1.5
MHz
1.
Standby mode is active when VSTBY is tied to GND.
2.
Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon VCC.
3.
Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).
40k
Ω
R
IN
----------------
50k
Ω
R
IN
----------------
60k
Ω
R
IN
----------------
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