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參數(shù)資料
| 型號(hào)： | OPA404KU |
| 英文描述： | 256K, 32K X 8, 2.5V HI-SPEED SER EE, -40C to +85C, 8-PDIP, TUBE |
| 中文描述： | 電壓反饋運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 195K |
| 代理商： | OPA404KU |
9
OPA404
BIAS CURRENT CHANGE
vs COMMON-MODE VOLTAGE
The input bias currents of most popular BIFET operational
amplifiers are affected by common-mode voltage (Figure 4).
Higher input FET gate-to-drain voltage causes leakage and
ionization (bias) currents to increase. Due to its cascode
input stage, the extremely low bias current of the OPA404 is
not compromised by common-mode voltage.
APPLICATIONS CIRCUITS
Figures 5 through 11 are circuit diagrams of various appli-
cations for the OPA404.
In
Out
Zero
1M
2
3
1
6
7
5
Polypropylene
1μF
Gain = –100
V
< 10μV
Drift
≈
0.05μV/°C
Zero Droop
≈
1μV/s
Referred to Input
1/4
OPA404
100k
10k
100k
100
Operate
1/4
OPA404
–10
–5
0
+5
+10
–20
–10
0
10
20
30
40
50
60
70
80
I
LF155
AD547
OPA404
OP-15/16/17
LF156/157
AD547
OPA404
LF156/157
T
= +25°C; curves taken from
mfg. published typical data
Common-Mode Voltage (VDC)
–15
+15
LF155
FIGURE 4. Input Bias Current vs Common-Mode Voltage.
FIGURE 5. Auto-Zero Amplifier.
FIGURE 6. Low-Droop Positive Peak Detector.
Input
Output
6
7
5
2
3
1
10k
IN914
1M
2N4117
0.01μF Polstyrene
Droop
≈
0.1mV/s
≈
10pF
1/4
OPA404
1/4
OPA404
IN914
(1)
(1)
(1)
NOTE: (1) Reverse polarity for negative peak detection.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA404KU | 制造商:Texas Instruments 功能描述:IC SM OP-AMP QUAD DIFET PRECISION |
| OPA404KU | 制造商:Texas Instruments 功能描述:OP AMP QUAD DIFET PRECISION 404 |
| OPA404KU/1K | 功能描述:運(yùn)算放大器 - 運(yùn)放 Quad High Speed Precision Difet RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| OPA404KU/1KE4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Quad High Speed Precision Difet RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| OPA404KUE4 | 功能描述:運(yùn)算放大器 - 運(yùn)放 Quad High Speed Precision Difet RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)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(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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