Datasheet > OPA657UB/2K5

OPA657UB/2K5

更新时间： 2024-10-26 22:17:39

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
20页	389K
描述
1.6GHz, Low-Noise, FET-Input OPERATIONAL AMPLIFIER

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OPA657UB/2K5 数据手册

OPA657

SBOS197B – DECEMBER 2001 – REVISED MAY 2004

1.6GHz, Low-Noise, FET-Input

OPERATIONAL AMPLIFIER

FEATURES

DESCRIPTION

The OPA657 combines a high gain bandwidth, low distor-tion,

voltage-feedback op amp with a low voltage noise JFET-input

stage to offer a very high dynamic range amplifier for high

precision ADC (Analog-to-Digital Converter) driving or wideband

transimpedance applications. Photodiode applications will see

improved noise and bandwidth using this decompensated,

high gain bandwidth amplifier.

● HIGH GAIN BANDWIDTH PRODUCT: 1.6GHz

● HIGH BANDWIDTH 275MHz (G = +10)

● LOW INPUT OFFSET VOLTAGE: ±0.25mV

● LOW INPUT BIAS CURRENT: 2pA

● LOW INPUT VOLTAGE NOISE: 4.8nV/ Hz

● HIGH OUTPUT CURRENT: 70mA

Very low level signals can be significantly amplified in a single

OPA657 gain stage with exceptional bandwidth and accuracy.

Having a high 1.6GHz gain bandwidth product will give >

10MHz signal bandwidths up to gains of 160V/V (44dB). The

very low input bias current and capacitance will support this

performance even for relatively high source impedances.

● FAST OVERDRIVE RECOVERY

APPLICATIONS

● WIDEBAND PHOTODIODE AMPLIFIER

● WAFER SCANNING EQUIPMENT

● ADC INPUT AMPLIFIER

Broadband photodetector applications will benefit from the low

voltage noise JFET inputs for the OPA657. The JFET input

contributes virtually no current noise while for broadband

applications, a low voltage noise is also required. The low

4.8nV/ Hz input voltage noise will provide exceptional input

sensitivity for higher bandwidth applications. The example

shown below will give a total equivalent input noise current of

1.8pA/ Hz over a 10MHz bandwidth.

● TEST AND MEASUREMENT FRONT END

● HIGH GAIN PRECISION AMPLIFIER

RELATED OPERATIONAL AMPLIFIER PRODUCTS

200kΩ TRANSIMPEDANCE BANDWIDTH

116

SLEW VOLTAGE

10MHz Bandwidth

V_SBW RATE NOISE

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

106

OPA355 +5 200

OPA655 ±5 400

OPA656 ±5 500

OPA627 ±15 16

THS4601 ±15 180

300

290

170

5.80

Unity-Gain Stable CMOS

Unity-Gain Stable FET-Input

4.5

5.4

100

0.1pF

200kΩ

100kHz

1MHz

Frequency

10MHz

50MHz

V_O

OPA657

(12pF)

–V_b

Wideband Photodiode Transimpedance Amplifier

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...20

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与OPA657UB/2K5相关器件

型号	品牌	获取价格	描述	数据表
OPA657UBG4	TI	获取价格	1.6GHz、低噪声、FET 输入运算放大器 \| D \| 8 \| -40 to 85
OPA657UG4	TI	获取价格	1.6GHz、低噪声、FET 输入运算放大器 \| D \| 8 \| -40 to 85
OPA658	BB	获取价格	Wideband, Low Power Current Feedback OPERATIONAL AMPLIFIER
OPA658N	BB	获取价格	Wideband, Low Power Current Feedback OPERATIONAL AMPLIFIER
OPA658N/3K	TI	获取价格	Wideband, Low Power Current Feedback Operational Amplifier 5-SOT-23
OPA658N-250	BB	获取价格	Video Amplifier, 1 Func, PDSO5, SOT-23, 5 PIN
OPA658N-3K	ETC	获取价格	Current-Feedback Operational Amplifier
OPA658NB	BB	获取价格	Wideband, Low Power Current Feedback OPERATIONAL AMPLIFIER
OPA658NB/250	TI	获取价格	Wideband, Low Power Current Feedback Operational Amplifier 5-SOT-23
OPA658NB/3K	TI	获取价格	Wideband, Low Power Current Feedback Operational Amplifier 5-SOT-23

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