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參數(shù)資料
| 型號(hào)： | OPA381 |
| 元件分類： | 跨阻放大器 |
| 英文描述： | Precision, Low Power, 18MHz Transimpedance Amplifier |
| 中文描述： | 精密，低功耗，18MHz的阻放大器 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 489K |
| 代理商： | OPA381 |
FEATURES
OVER 250kHz TRANSIMPEDANCE
BANDWIDTH
DYNAMIC RANGE: 5 Decades
EXCELLENT LONG-TERM STABILITY
LOW VOLTAGE NOISE: 10nV/
√
Hz
BIAS CURRENT: 3pA
OFFSET VOLTAGE: 25
μ
V (max)
OFFSET DRIFT: 0.1
μ
V/
°
C (max)
GAIN BANDWIDTH: 18MHz
QUIESCENT CURRENT: 800
μ
A
FAST OVERLOAD RECOVERY
SUPPLY RANGE: 2.7V to 5.5V
SINGLE AND DUAL VERSIONS
Micro
PACKAGE: DFN-8, MSOP-8
APPLICATIONS
PRECISION I/V CONVERSION
PHOTODIODE MONITORING
OPTICAL AMPLIFIERS
CAT-SCANNER FRONT-END
PHOTO LAB EQUIPMENT
1M
R
F
100k
+5V
7
2
3
4
6
OPA381
65pF
75pF
C
DIODE
5V
R
P
(Optional
Pulldown
Resistor)
VOUT
(0V to 4.4V)
Photodiode
DESCRIPTION
The OPA381 family of transimpedance amplifiers provides
18MHz of Gain Bandwidth (GBW), with extremely high
precision, excellent long-term stability, and very low 1/f noise.
The OPA381 features an offset voltage of 25
μ
V (max), offset
drift of 0.1
μ
V/
°
C (max), and bias current of 3pA. The OPA381
far exceeds the offset, drift, and noise performance that
conventional JFET op amps provide.
The signal bandwidth of a transimpedance amplifier depends
largely on the GBW of the amplifier and the parasitic
capacitance of the photodiode, as well as the feedback
resistor. The 18MHz GBW of the OPA381 enables a trans-
impedance bandwidth of > 250kHz in most configurations.
The OPA381 is ideally suited for fast control loops for power
level measurement on an optical fiber.
As a result of the high precision and low-noise characteristics
of the OPA381, a dynamic range of 5 decades can be
achieved. This capability allows the measurement of signal
currents on the order of 10nA, and up to 1mA in a single I/V
conversion stage. In contrast to logarithmic amplifiers, the
OPA381 provides very wide bandwidth throughout the full
dynamic range. By using an external pulldown resistor to
–5V, the output voltage range can be extended to include 0V.
The OPA381 and OPA2381 are both available in MSOP-8
and DFN-8 (3mm x 3mm) packages. They are specified
from –40
°
C to +125
°
C.
OPA381 RELATED DEVICES
PRODUCT
FEATURES
OPA380
90MHz GBW, 2.7V to 5.5V Supply
Transimpedance Amplifier
OPA132
16MHz GBW, Precision FET Op Amp
±
15V
150MHz GBW, Low-Noise, 2.7V to 5.5V Supply
10
μ
V VOS, Zero-Drift, 2.5V to 5V Supply
500
μ
V VOS, 38MHz, 2.5V to 5V Supply
100MHz GBW CMOS, RRIO, 2.5V to 5V Supply
OPA300
OPA335
OPA350
OPA354
OPA355
200MHz GBW CMOS, 2.5V to 5V Supply
230MHz, Precision FET,
±
5V
OPA656/7
OPA381
OPA2381
SBOS313B AUGUST 2004 REVISED NOVEMBER 2004
Precision, Low Power, 18MHz
Transimpedance Amplifier
!
!
www.ti.com
Copyright
2004, Texas Instruments Incorporated
All trademarks are the property of their respective owners.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA381AIDRBT | Precision, Low Power, 18MHz Transimpedance Amplifier |
| OPA381AIDRBR | Precision, Low Power, 18MHz Transimpedance Amplifier |
| OPA2381AIDRBR | Precision, Low Power, 18MHz Transimpedance Amplifier |
| OPA381AIDGKR | Precision, Low Power, 18MHz Transimpedance Amplifier |
| OPA2381AIDGKR | Precision, Low Power, 18MHz Transimpedance Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA381AIDGKR | 功能描述:高速運(yùn)算放大器 Precision Lo-Power Hi-Sp Transimpedance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA381AIDGKRG4 | 功能描述:高速運(yùn)算放大器 Precision Lo-Power Hi-Sp Transimpedance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA381AIDGKT | 功能描述:高速運(yùn)算放大器 Precision Lo-Power Hi-Sp Transimpedance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA381AIDGKTG4 | 功能描述:高速運(yùn)算放大器 Precision Lo-Power Hi-Sp Transimpedance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA381AIDRBR | 功能描述:高速運(yùn)算放大器 Precision Lo-Power Hi-Sp Transimpedance RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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