OPA847

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具有关断状态的宽带超低噪声电压反馈运算放大器

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数据表

document-pdfAcrobat Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown 数据表 (Rev. E) (英语)

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OPA892

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具有超低总谐波失真 (THD) 的 2GHz 10V/V 稳定 0.95nV√Hz 运算放大器 Wider Voltage (36 V), lower Iq (7.5 mA), lower offset drift (1 µV/°C), and lower THD + N ( -114 dB)

OPA847

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产品详情

Architecture

Voltage FB

Number of channels

1

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

10

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

12

GBW (typ) (MHz)

3900

BW at Acl (MHz)

600

Acl, min spec gain (V/V)

12

Slew rate (typ) (V/µs)

950

Vn at flatband (typ) (nV√Hz)

0.85

Vn at 1 kHz (typ) (nV√Hz)

1.4

Iq per channel (typ) (mA)

18.1

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

0.6

Rail-to-rail

No

Features

Decompensated, Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

110

Input bias current (max) (pA)

39000000

Offset drift (typ) (µV/°C)

0.25

Iout (typ) (mA)

75

2nd harmonic (dBc)

74

3rd harmonic (dBc)

103

Frequency of harmonic distortion measurement (MHz)

5

Architecture

Voltage FB

Number of channels

1

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

10

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

12

GBW (typ) (MHz)

3900

BW at Acl (MHz)

600

Acl, min spec gain (V/V)

12

Slew rate (typ) (V/µs)

950

Vn at flatband (typ) (nV√Hz)

0.85

Vn at 1 kHz (typ) (nV√Hz)

1.4

Iq per channel (typ) (mA)

18.1

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

0.6

Rail-to-rail

No

Features

Decompensated, Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

110

Input bias current (max) (pA)

39000000

Offset drift (typ) (µV/°C)

0.25

Iout (typ) (mA)

75

2nd harmonic (dBc)

74

3rd harmonic (dBc)

103

Frequency of harmonic distortion measurement (MHz)

5

SOT-23 (DBV)

6

8.12 mm² (2.9 mm × 2.8 mm)

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

HIGH GAIN BANDWIDTH: 3.9GHz
LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
VERY LOW DISTORTION: –105dBc (5MHz)
HIGH SLEW RATE: 950V/µs
HIGH DC ACCURACY: V_IO < ±100µV
LOW SUPPLY CURRENT: 18.1mA
LOW SHUTDOWN POWER: 2mW
STABLE FOR GAINS 12
APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW NOISE DIFFERENTIAL RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642

All trademarks are the property of their respective owners.

HIGH GAIN BANDWIDTH: 3.9GHz
LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
VERY LOW DISTORTION: –105dBc (5MHz)
HIGH SLEW RATE: 950V/µs
HIGH DC ACCURACY: V_IO < ±100µV
LOW SUPPLY CURRENT: 18.1mA
LOW SHUTDOWN POWER: 2mW
STABLE FOR GAINS 12
APPLICATIONS
- HIGH DYNAMIC RANGE ADC PREAMPS
- LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
- WIDEBAND, HIGH GAIN AMPLIFIERS
- LOW NOISE DIFFERENTIAL RECEIVERS
- ULTRASOUND CHANNEL AMPLIFIERS
- IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642

All trademarks are the property of their respective owners.

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV/√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.

The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-to-Digital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV/√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.

The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-to-Digital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.

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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	Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown 数据表 (Rev. E)				2008-12-30
	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	RLC Filter Design for ADC Interface Applications (Rev. A)				2015-5-13
	应用手册	放大器噪声系数计算				2013-4-8
	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	Voltage-Controlled Amplifier Evaluation Kit				2008-8-25
	用户指南	DEM-OPA-SOT-1B User's Guide (Rev. B)				2006-4-12
	模拟设计期刊	Low-power, high-intercept interface to the ADS5424, 105-MSPS converter				2005-10-10
	模拟设计期刊	Using a decompensated op amp for improved performance				2005-3-11
	应用手册	Noise Analysis for High Speed Op Amps (Rev. A)				2005-1-17
	应用手册	ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers				2004-4-22
	应用手册	Measuring Board Parasitics in High-Speed Analog Design				2003-7-7

设计与开发

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评估板

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

The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

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DEM-OPA-SOT-1B — 采用 SOT23-5/6（同相）封装的单路运算放大器评估模块

The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.

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