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參數資料
| 型號： | OPA129UB |
| 英文描述： | Ultra-Low Bias Current Difet OPERATIONAL AMPLIFIER |
| 中文描述： | 超低偏置電流Difet運算放大器 |
| 文件頁數： | 1/7頁 |
| 文件大小： | 640K |
| 代理商： | OPA129UB |
Ultra-Low Bias Current Difet
OPERATIONAL AMPLIFIER
FEATURES
G
ULTRA-LOW BIAS CURRENT: 100fA max
G
LOW OFFSET: 2mV max
G
LOW DRIFT: 10
μ
V/
°
C max
G
HIGH OPEN-LOOP GAIN: 94dB min
G
LOW NOISE: 15nV/
√
Hz at 10kHz
G
PLASTIC DIP and SOIC PACKAGE
APPLICATIONS
G
PHOTODETECTOR PREAMP
G
CHROMATOGRAPHY
G
ELECTROMETER AMPLIFIERS
G
MASS SPECTROMETER
G
pH PROBE AMPLIFIER
G
ION GAGE MEASUREMENT
DESCRIPTION
The OPA129 is an ultra-low bias current mono-
lithic operational amplifier offered in an 8-pin PDIP
and SO-8 package. Using advanced geometry
dielectrically-isolated FET (
Difet
) inputs, this mono-
lithic amplifier achieves a high performance level.
Difet
fabrication eliminates isolation-junction leakage
current—the main contributor to input bias current
with conventional monolithic FETs. This reduces
input bias current by a factor of 10 to 100. Very low
input bias current can be achieved without resorting to
small-geometry FETs or CMOS designs which can
suffer from much larger offset voltage, voltage noise,
drift, and poor power supply rejection.
The OPA129's special pinout eliminates leakage cur-
rent that occurs with other op amps. Pins 1 and 4 have
no internal connection, allowing circuit board guard
traces—even with the surface-mount package version.
OPA129 is available in 8-pin DIP and SO-8 packages,
specified for operation from –40
°
C to +85
°
C.
OPA129
Difet
Burr-Brown Corp.
+In
Output
6
Noise-Free
Cascode
7
5
V–
V+
30k
30k
–In
2
3
Simplified Circuit
8
Substrate
International Airport Industrial Park Mailing Address: PO Box 11400 Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd. Tucson, AZ 85706
Tel: (520) 746-1111 Twx: 910-952-1111 Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
1994 Burr-Brown Corporation
PDS-1195A
Printed in U.S.A. July, 1994
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OPA129UB | 制造商:Texas Instruments 功能描述:OPERATIONAL AMPLIFIER (OP-AMP) IC ((NW)) |
| OPA129UB/2K5 | 功能描述:運算放大器 - 運放 Ultra-Low Bias Current Difet 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 |
| OPA129UB/2K5E4 | 功能描述:運算放大器 - 運放 Ultra-Low Bias Current Difet 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 |
| OPA129UB2K5 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultra-Low Bias Current Difet PERATIONAL AMPLIFIER |
| OPA129UB2K5E4 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Ultra-Low Bias Current Difet PERATIONAL AMPLIFIER |
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