OPA847

現行

具有關機功能的寬頻、超低雜訊、電壓回饋運算放大器

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產品規格表

document-pdfAcrobat Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown datasheet (Rev. E) (英文)

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OPA892

現行

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

OPA847

現行

產品規格表

立即訂購

產品詳細資料

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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重要文件	類型	標題	格式選項	日期
*	資料表	Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown datasheet (Rev. E)		2008/12/30
	電子書	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	2017/3/28
	應用說明	RLC Filter Design for ADC Interface Applications (Rev. A)		2015/5/13
	使用指南	DEM-OPA-SO-1A User's Guide (Rev. B)		2012/4/12
	使用指南	DEM-OPA-SO-1B User's Guide (Rev. D)		2012/4/12
	使用指南	DEM-OPA-SOT-1A User's Guide (Rev. B)		2012/4/12
	應用說明	Transimpedance Considerations for High-Speed Operational Amplifiers		2009/11/22
	使用指南	Voltage-Controlled Amplifier Evaluation Kit		2008/8/25
	使用指南	DEM-OPA-SOT-1B User's Guide (Rev. B)		2006/4/12
	類比設計期刊	Low-power, high-intercept interface to the ADS5424, 105-MSPS converter		2005/10/10
	類比設計期刊	Using a decompensated op amp for improved performance		2005/3/11
	應用說明	Noise Analysis for High Speed Op Amps (Rev. A)		2005/1/17
	應用說明	ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers		2004/4/22
	應用說明	Measuring Board Parasitics in High-Speed Analog Design		2003/7/7

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開發板

DEM-OPA-SO-1B — 適用於 SO-8 (非反相) 封裝的單路運算放大器評估模組

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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開發板

DEM-OPA-SOT-1B — 適用於 SOT23-5/6 (非反相) 封裝的單路運算放大器評估模組

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.