Datasheet > OPA250G4

OPA250G4

更新时间： 2024-11-29 12:46:47

品牌	Logo	应用领域
德州仪器 - TI		运算放大器
页数	文件大小	规格书
25页	814K
描述
Wideband, Unity-Gain Stable, FET-Input OPERATIONAL AMPLIFIER

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OPA250G4 数据手册

OPA656

www.ti.com

SBOS196G – DECEMBER 2001 – REVISED NOVEMBER 2008

Wideband, Unity-Gain Stable, FET-Input

OPERATIONAL AMPLIFIER

FEATURES

DESCRIPTION

● 500MHz UNITY-GAIN BANDWIDTH

The OPA656 combines a very wideband, unity-gain stable,

voltage-feedback op amp with a FET-input stage to offer an

ultra high dynamic-range amplifier for ADC (Analog-to-Digital

Converter) buffering and transimpedance applications. Extremely

low DC errors give good precision in optical applications.

● LOW INPUT BIAS CURRENT: 2pA

● LOW OFFSET AND DRIFT: ±0.25mV, ±2µV/°C

● LOW DISTORTION: 74dB SFDR at 5MHz

● HIGH OUTPUT CURRENT: 70mA

The high unity-gain stable bandwidth and JFET input allows

exceptional performance in high-speed, low-noise integrators.

● LOW INPUT VOLTAGE NOISE: 7nV/√Hz

The high input impedance and low bias current provided by

the FET input is supported by the ultra-low 7nV/√Hz input

voltage noise to achieve a very low integrated noise in

wideband photodiode transimpedance applications.

APPLICATIONS

● WIDEBAND PHOTODIODE AMPLIFIERS

● SAMPLE-AND-HOLD BUFFERS

● CCD OUTPUT BUFFERS

Broad transimpedance bandwidths are achievable given the

OPA656’s high 230MHz gain bandwidth product. As shown

below, a –3dB bandwidth of 1MHz is provided even for a high

1MΩ transimpedance gain from a 47pF source capacitance.

● ADC INPUT BUFFERS

● WIDEBAND PRECISION AMPLIFIERS

● TEST AND MEASUREMENT FRONT ENDS

RELATED OPERATIONAL AMPLIFIER PRODUCTS

SLEW VOLTAGE

V_SBW RATE NOISE

DEVICE (V) (MHz) (V/µS) (nV/√HZ) AMPLIFIER DESCRIPTION

1pF

OPA355 +5 200

300

290

5.8

Unity-Gain Stable CMOS

OPA655 ±5 400

Unity-Gain Stable FET-Input

Gain of +7 Stable FET-Input

Unity-Gain Stable FET-Input

OPA657 ±5 1600 700

4.8

4.5

5.4

OPA627 ±15 16

THS4601 ±15 180

499kΩ

100

1MΩ TRANSIMPEDANCE BANDWIDTH

1MHz Bandwidth

130

120

110

100

V_O

OPA656

(47pF)

–V_b

Wideband Photodiode Transimpedance Amplifier

10kHz

100kHz

Frequency

1MHz

5MHz

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

12 3 4 5 6 7...25

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OPA251UA/2K5	BB	获取价格	Single-Supply, MicroPOWER OPERATIONAL AMPLIFIERS
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OPA251UA/2K5G4	TI	获取价格	Single-Supply, MicroPOWER OPERATIONAL AMPLIFIERS

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