Datasheet > OPA380AIDGKRG4

OPA380AIDGKRG4

更新时间： 2024-11-26 12:02:55

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
22页	695K
描述
Precision, High-Speed Transimpedance Amplifier

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OPA380AIDGKRG4 数据手册

OPA380

OPA2380

SBOS291G − NOVEMBER 2003 − REVISED SEPTEMBER 2007

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)

DYNAMIC RANGE: 4 to 5 Decades

DRIFT: 0.1µV/°C (max)

GAIN BANDWIDTH: 90MHz

QUIESCENT CURRENT: 7.5mA

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 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.

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

Photodiode

(Optional

Pulldown

Resistor)

OPA380 RELATED DEVICES

67pF

1MΩ

PRODUCT

OPA300

OPA350

OPA335

OPA132

OPA656/7

LOG112

LOG114

IVC102

FEATURES

−5V

150MHz CMOS, 2.7V to 5.5V Supply

100kΩ

500µV V , 38MHz, 2.5V to 5V Supply

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

75pF

16MHz GBW, Precision FET Op Amp, 15V

230MHz, Precision FET, 5V

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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OPA380AIDGKRG4 替代型号

型号	品牌	替代类型	描述	数据表
OPA380AIDGKR	TI	类似代替	Precision, High-Speed Transimpedance Amplifier

与OPA380AIDGKRG4相关器件

型号	品牌	获取价格	描述	数据表
OPA380AIDGKT	TI	获取价格	Precision, High-Speed Transimpedance Amplifier
OPA380AIDGKTG4	TI	获取价格	Precision, High-Speed Transimpedance Amplifier
OPA380AIDR	TI	获取价格	Precision, High-Speed Transimpedance Amplifier
OPA380AIDRG4	TI	获取价格	Precision, High-Speed Transimpedance Amplifier
OPA381	BB	获取价格	Precision, Low Power, 18MHz Transimpedance Amplifier
OPA381	TI	获取价格	精确低功耗高速互阻抗放大器
OPA381AIDGKR	BB	获取价格	Precision, Low Power, 18MHz Transimpedance Amplifier
OPA381AIDGKR	TI	获取价格	精确低功耗高速互阻抗放大器 \| DGK \| 8 \| -40 to 125
OPA381AIDGKT	BB	获取价格	Precision, Low Power, 18MHz Transimpedance Amplifier
OPA381AIDGKT	TI	获取价格	精确低功耗高速互阻抗放大器 \| DGK \| 8 \| -40 to 125

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