參數(shù)資料
型號(hào): TS421IQT
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 0.367 W, 1 CHANNEL, AUDIO AMPLIFIER, DSO8
封裝: MLFP-8
文件頁(yè)數(shù): 18/32頁(yè)
文件大?。?/td> 1000K
代理商: TS421IQT
TS419-TS421
25/32
Fig. 89: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 91: Noise Floor
Fig. 93: PSRR vs Power Supply Voltage
Fig. 90: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Fig. 92: Noise Floor
Fig. 94: PSRR vs Input Capacitor
2.0
2.5
3.0
3.5
4.0
4.5
5.0
60
65
70
75
80
85
90
Av = 8
Cb = 1
F
THD+N < 0.5%
Tamb = 25
°C
RL=32
RL=16
RL=8
Si
gnal
t
o
Noi
se
Rat
io
(
d
B)
Power Supply Voltage (V)
100
1000
10000
0
10
20
30
40
50
60
70
Standby=OFF
Standby=ON
RL>=16
Vcc=5V
Av=8
Cb = 1
F
Input Grounded
Bw < 125kHz
Tamb=25
°C
20k
20
Noi
se
Fl
oor
(
VRms)
Frequency (Hz)
100
1000
10000
100000
-70
-60
-50
-40
-30
-20
-10
0
Vcc = 2V
Vcc = 5V, 3.3V & 2.5V
Vripple = 100mVrms
Rfeed = 80k
Input = floating
Cb = 1
F
RL >= 16
Tamb = 25
°C
PSRR
(
d
B)
Frequency (Hz)
2.0
2.5
3.0
3.5
4.0
4.5
5.0
70
75
80
85
90
95
Av = 8
Cb = 1
F
THD+N < 0.5%
Tamb = 25
°C
RL=32
RL=16
RL=8
Si
gnal
t
o
Noi
se
Rat
io
(
d
B)
Power Supply Voltage (V)
100
1000
10000
0
10
20
30
40
50
60
70
Standby=OFF
Standby=ON
RL>=16
Vcc=2V
Av=8
Cb = 1
F
Input Grounded
Bw < 125kHz
Tamb=25
°C
20k
20
Noi
se
Fl
oor
(
VRms)
Frequency (Hz)
100
1000
10000
100000
-50
-40
-30
-20
-10
0
Cin = 100nF
Cin = 1
F, 220nF
Vripple = 200mVpp
Av = 8, Vcc = 5V
Input = grounded
Cb = 1
F, Rin = 20k
RL >= 16
Tamb = 25
°C
PSRR
(
d
B)
Frequency (Hz)
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