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參數資料
| 型號： | TSH81IYD |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, SOP-8 |
| 文件頁數： | 10/26頁 |
| 文件大小： | 681K |
| 代理商： | TSH81IYD |
Precautions on asymmetrical supply operation
TSH80-TSH81-TSH82
18/24
5
Precautions on asymmetrical supply operation
The TSH8x can be used either with a dual or a single supply. If a single supply is used, the
inputs are biased to the mid-supply voltage (+VCC/2). This bias network must be carefully
designed, in order to reject any noise present on the supply rail.
As the bias current is 15A, you should use a high resistance R1 (approximately 10k
Ω) to
avoid introducing an offset mismatch at the amplifier inputs.
Figure 33.
Asymmetrical supply schematic diagram
C1, C2, C3 are bypass capacitors intended to filter perturbation from VCC. The following
capacitor values are appropriate:
C1=100nF and C2=C3=100F
R2 and R3 are such that the current through them must be superior to 100 times the bias
current. Therefore, you could use the following resistance values:
R2=R3=4.7k
Ω
Cin and Cout are chosen to filter the DC signal by the low pass filters (R1, Cin) and (Rout,
Cout). With R1=10kΩ, Rout=RL=150Ω, and Cin=2F, Cout=220F the cutoff frequency
obtained is lower than 10Hz.
Figure 34.
Use of the TSH8x in gain = -1 configuration
IN
R1
Vcc+
OUT
R2
R3
C1
C3
C2
Cin
Cout
+
-
Cf
R5
R4
RL
IN
R1
Vcc+
OUT
R2
R3
C1
C3
C2
Cin
Cout
+
-
1k
Cf
1k
RL
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相關代理商/技術參數 |
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|---|---|
| TSH81IYPT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide band rail-to-rail operational amplifier with standby function |
| TSH82 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide band rail-to-rail operational amplifier with standby function |
| TSH82I | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide Band, Rail-to-Rail Operational Amplifier with Standby Function |
| TSH82ID | 功能描述:運算放大器 - 運放 Dual Wideband R-to-R RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| TSH82ID/DT | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Wide band rail-to-rail operational amplifier with standby function |
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