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器件3D模型￥ 30.398
OPA380AIDGKT 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
放大器、缓冲器
封装:
MSOP-8
描述:
TEXAS INSTRUMENTS OPA380AIDGKT 芯片, 跨阻放大器, 90MHZ, MSOP-8, 整卷
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封装尺寸在P15P17P18
封装信息在P15P16P17P18
应用领域在P1P9P22
电气规格在P3P4P7
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OPA380AIDGKT数据手册
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FEATURES
D > 1MHz TRANSIMPEDANCE BANDWIDTH
D EXCELLENT LONG-TERM V
OS
STABILITY
D BIAS CURRENT: 50pA (max)
D OFFSET VOLTAGE: 25µV (max)
D DYNAMIC RANGE: 4 to 5 Decades
D DRIFT: 0.1µV/°C (max)
D GAIN BANDWIDTH: 90MHz
D QUIESCENT CURRENT: 7.5mA
D SUPPLY RANGE: 2.7V to 5.5V
D SINGLE AND DUAL VERSIONS
D MicroSize PACKAGE: MSOP-8
APPLICATIONS
D PHOTODIODE MONITORING
D PRECISION I/V CONVERSION
D OPTICAL AMPLIFIERS
D CAT-SCANNER FRONT-END
1MΩ
R
F
100kΩ
+5V
7
2
3
4
6
OPA380
67pF
75pF
−5V
R
P
(Optional
Pulldown
Resistor)
V
OUT
(0V to 4.4V)
Photodiode
DESCRIPTION
The OPA380 family of transimpedance amplifiers provides
high-speed (90MHz Gain Bandwidth [GBW]) operation, with
extremely high precision, excellent long-term stability, and
very low 1/f noise. It is ideally suited for high-speed
photodiode applications. The OPA380 features an offset
voltage of 25µV, offset drift of 0.1µV/°C, and bias current of
50pA. The OPA380 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 90MHz GBW of the OPA380 enables a trans-
impedance bandwidth of > 1MHz in most configurations. The
OPA380 is ideally suited for fast control loops for power level
on an optical fiber.
As a result of the high precision and low-noise characteristics
of the OPA380, a dynamic range of 4 to 5 decades can be
achieved. For example, this capability allows the
measurement of signal currents on the order of 1nA, and up
to 100µA in a single I/V conversion stage. In contrast to
logarithmic amplifiers, the OPA380 provides very wide
bandwidth throughout the full dynamic range. By using an
external pull-down resistor to –5V, the output voltage range
can be extended to include 0V.
The OPA380 (single) is available in MSOP-8 and SO-8
packages. The OPA2380 (dual) is available in the
miniature MSOP-8 package. They are specified from
–40°C to +125°C.
OPA380 RELATED DEVICES
PRODUCT FEATURES
OPA300 150MHz CMOS, 2.7V to 5.5V Supply
OPA350 500µV V
OS
, 38MHz, 2.5V to 5V Supply
OPA335 10µV V
OS
, Zero-Drift, 2.5V to 5V Supply
OPA132 16MHz GBW, Precision FET Op Amp, ±15V
OPA656/7 230MHz, Precision FET, ±5V
LOG112 LOG amp, 7.5 decades, ±4.5V to ±18V Supply
LOG114 LOG amp, 7.5 decades, ±2.25V to ±5.5V Supply
IVC102 Precision Switched Integrator
DDC112 Dual Current Input, 20-Bit ADC
OPA380
OPA2380
SBOS291G − NOVEMBER 2003 − REVISED SEPTEMBER 2007
Precision, High-Speed
Transimpedance Amplifier
! !
www.ti.com
Copyright 2003-2007, 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.
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