Datasheet > OPA2380

OPA2380

更新时间： 2024-09-26 22:38:43

品牌	Logo	应用领域
BB		放大器
页数	文件大小	规格书
18页	360K
描述
Precision, High-Speed Transimpedance Amplifier

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OPA2380 数据手册

OPA380

OPA2380

SBOS291E − NOVEMBER 2003 − REVISED NOVEMBER 2004

Precision, High-Speed

Transimpedance Amplifier

F_DEATURES

DESCRIPTION

> 1MHz TRANSIMPEDANCE BANDWIDTH

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.

EXCELLENT LONG-TERM V

STABILITY

BIAS CURRENT: 50pA (max)

OFFSET VOLTAGE: 25µV (max)

INPUT CURRENT RANGE: 10nA to 1mA

DRIFT: 0.1µV/°C (max)

GAIN BANDWIDTH: 90MHz

QUIESCENT CURRENT: 6.5mA

SUPPLY RANGE: 2.7V to 5.5V

SINGLE AND DUAL VERSIONS

MicroSize PACKAGE: MSOP-8

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.

A_DPPLICATIONS

PHOTODIODE MONITORING

As a result of the high precision and low-noise characteristics

of the OPA380, a dynamic range of 5 decades can be

achieved. This capability allows the measurement of signal

currents in the order of 10nA, and up to 1mA 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 pulldown resistor to

–5V, the output voltage range can be extended to include 0V.

PRECISION I/V CONVERSION

OPTICAL AMPLIFIERS

CAT-SCANNER FRONT-END

R_F

+5V

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

V_OUT

(0V to 4.4V)

R_P

OPA380 RELATED DEVICES

Photodiode

(Optional

Pulldown

Resistor)

PRODUCT

OPA300

OPA350

OPA335

OPA132

OPA656/7

LOG112

LOG114

IVC102

FEATURES

67pF

1MΩ

150MHz CMOS, 2.7V to 5.5V Supply

−5V

500µV V , 38MHz, 2.5V to 5V Supply

100kΩ

10µV V , Zero-Drift, 2.5V to 5V Supply

16MHz GBW, Precision FET Op Amp, 15V

230MHz, Precision FET, 5V

75pF

LOG amp, 7.5 decades, 4.5V to 18V Supply

LOG amp, 7.5 decades, 2.25V to 5.5V Supply

Precision Switched Integrator

DDC112

Dual Current Input, 20-Bit ADC

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.

All trademarks are the property of their respective owners.

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