OPA657

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1.6GHz、低噪声、FET 输入运算放大器

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数据表

document-pdfAcrobat OPA657 1.6-GHz, Low-Noise, FET-Input Operational Amplifier 数据表 (Rev. F) (英语) PDF | HTML

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OPA818

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2.7GHz、13V、解补偿 7V/V FET 输入运算放大器 This device has lower noise (2.2 nV/rtHz) and higher gain-bandwidth (2.7 GHz)

OPA657

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数据表

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产品详情

Architecture

FET / CMOS Input, Voltage FB

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

8

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

12

GBW (typ) (MHz)

1600

BW at Acl (MHz)

350

Acl, min spec gain (V/V)

7

Slew rate (typ) (V/µs)

700

Vn at flatband (typ) (nV√Hz)

4.8

Vn at 1 kHz (typ) (nV√Hz)

7

Iq per channel (typ) (mA)

14

Vos (offset voltage at 25°C) (max) (mV)

1.8

Rail-to-rail

No

Features

Decompensated

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

89

Input bias current (max) (pA)

20

Offset drift (typ) (µV/°C)

6

Iout (typ) (mA)

70

2nd harmonic (dBc)

74

3rd harmonic (dBc)

106

Frequency of harmonic distortion measurement (MHz)

5

Architecture

FET / CMOS Input, Voltage FB

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

8

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

12

GBW (typ) (MHz)

1600

BW at Acl (MHz)

350

Acl, min spec gain (V/V)

7

Slew rate (typ) (V/µs)

700

Vn at flatband (typ) (nV√Hz)

4.8

Vn at 1 kHz (typ) (nV√Hz)

7

Iq per channel (typ) (mA)

14

Vos (offset voltage at 25°C) (max) (mV)

1.8

Rail-to-rail

No

Features

Decompensated

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

89

Input bias current (max) (pA)

20

Offset drift (typ) (µV/°C)

6

Iout (typ) (mA)

70

2nd harmonic (dBc)

74

3rd harmonic (dBc)

106

Frequency of harmonic distortion measurement (MHz)

5

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

SOT-23 (DBV)

5

8.12 mm² (2.9 mm × 2.8 mm)

High Gain Bandwidth Product: 1.6 GHz
High Bandwidth 275 MHz (G = 10)
Slew Rate 700 V/µs (G = 10, 1-V Step)
Available in High Grade With Improved DC
Specifications
Operating Temperature Range: –40°C to 85°C
Low-Input Offset Voltage: ±250 µV
Low-Input Bias Current: 2 pA
Low-Input Voltage Noise: 4.8 nV/√Hz
High-Output Current: 70 mA
Fast Overdrive Recovery

High Gain Bandwidth Product: 1.6 GHz
High Bandwidth 275 MHz (G = 10)
Slew Rate 700 V/µs (G = 10, 1-V Step)
Available in High Grade With Improved DC
Specifications
Operating Temperature Range: –40°C to 85°C
Low-Input Offset Voltage: ±250 µV
Low-Input Bias Current: 2 pA
Low-Input Voltage Noise: 4.8 nV/√Hz
High-Output Current: 70 mA
Fast Overdrive Recovery

The OPA657 device combines a high-gain bandwidth, low-distortion, voltage-feedback operational amplifier 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 see improved noise and bandwidth using this decompensated, high-gain bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6-GHz gain bandwidth product gives greater than 10-MHz signal bandwidths up to gains of 160 V/V (44 dB). The very low input bias current and capacitance supports this performance even for relatively high source impedances.

Broadband photodetector applications 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 4.8 nV/√Hz input voltage noise provides exceptional input sensitivity for higher bandwidth applications. The example shown below gives a total equivalent input noise current of 1.8 pA/√Hz over a 10-MHz bandwidth.

The OPA657 device combines a high-gain bandwidth, low-distortion, voltage-feedback operational amplifier 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 see improved noise and bandwidth using this decompensated, high-gain bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6-GHz gain bandwidth product gives greater than 10-MHz signal bandwidths up to gains of 160 V/V (44 dB). The very low input bias current and capacitance supports this performance even for relatively high source impedances.

Broadband photodetector applications 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 4.8 nV/√Hz input voltage noise provides exceptional input sensitivity for higher bandwidth applications. The example shown below gives a total equivalent input noise current of 1.8 pA/√Hz over a 10-MHz bandwidth.

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顶层文档	类型	标题	格式选项	下载最新的英语版本		日期
*	数据表	OPA657 1.6-GHz, Low-Noise, FET-Input Operational Amplifier 数据表 (Rev. F)	PDF \| HTML			2015-8-31
	技术文章	3 common questions when designing with high-speed amplifiers	PDF \| HTML			2020-7-17
	电子书	The Signal e-book: 有关运算放大器设计主题的博客文章汇编	PDF \| HTML	英语版	PDF \| HTML	2018-1-31
	应用手册	Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A)				2017-5-16
	应用手册	跨阻型放大器应用指南				2012-10-10
	用户指南	DEM-OPA-SO-1A User's Guide (Rev. B)				2012-4-12
	用户指南	DEM-OPA-SO-1B User's Guide (Rev. D)				2012-4-12
	用户指南	DEM-OPA-SOT-1A User's Guide (Rev. B)				2012-4-12
	应用手册	Transimpedance Considerations for High-Speed Operational Amplifiers				2009-11-22
	用户指南	DEM-OPA-SOT-1B User's Guide (Rev. B)				2006-4-12
	模拟设计期刊	Using a decompensated op amp for improved performance				2005-3-11
	模拟设计期刊	Designing for low distortion with high-speed op amps				2005-3-2
	应用手册	Noise Analysis for High Speed Op Amps (Rev. A)				2005-1-17
	应用手册	Measuring Board Parasitics in High-Speed Analog Design				2003-7-7
	应用手册	Voltage Feedback vs. Current Feedback Op Amps				1998-11-30

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DEM-OPA-SO-1A — 采用 SO-8 封装的单路运算放大器评估模块

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

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