OPA691

現行

具有停用功能的寬頻電流回饋運算放大器

立即訂購

產品規格表

document-pdfAcrobat Wideband, Current Feedback Operational Amplifier With Disable datasheet (Rev. D) (英文)

OPA691

現行

產品規格表

立即訂購

產品詳細資料

Architecture

Current FB

Number of channels

1

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

4

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

12

GBW (typ) (MHz)

280

BW at Acl (MHz)

280

Acl, min spec gain (V/V)

1

Slew rate (typ) (V/µs)

2100

Vn at flatband (typ) (nV√Hz)

1.7

Vn at 1 kHz (typ) (nV√Hz)

1.7

Iq per channel (typ) (mA)

5.1

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

2.5

Rail-to-rail

No

Features

Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

56

Input bias current (max) (pA)

35000000

Offset drift (typ) (µV/°C)

20

Iout (typ) (mA)

190

2nd harmonic (dBc)

70

3rd harmonic (dBc)

74

Frequency of harmonic distortion measurement (MHz)

5

Architecture

Current FB

Number of channels

1

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

4

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

12

GBW (typ) (MHz)

280

BW at Acl (MHz)

280

Acl, min spec gain (V/V)

1

Slew rate (typ) (V/µs)

2100

Vn at flatband (typ) (nV√Hz)

1.7

Vn at 1 kHz (typ) (nV√Hz)

1.7

Iq per channel (typ) (mA)

5.1

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

2.5

Rail-to-rail

No

Features

Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

56

Input bias current (max) (pA)

35000000

Offset drift (typ) (µV/°C)

20

Iout (typ) (mA)

190

2nd harmonic (dBc)

70

3rd harmonic (dBc)

74

Frequency of harmonic distortion measurement (MHz)

5

SOIC (D)

8

29.4 mm² (4.9 mm × 6 mm)

SOT-23 (DBV)

6

8.12 mm² (2.9 mm × 2.8 mm)

FLEXIBLE SUPPLY RANGE:
+5V to +12V Single-Supply
±2.5V to ±6V Dual-Supply
UNITY-GAIN STABLE: 280MHz (G =1)
HIGH OUTPUT CURRENT: 190mA
OUTPUT VOLTAGE SWING: ±4.0V
HIGH SLEW RATE: 2100V/µs
LOW dG/d: 0.07%/0.02°
LOW SUPPLY CURRENT: 5.1mA
LOW DISABLED CURRENT: 150µA
WIDEBAND +5V OPERATION: 190MHz (G = +2)
APPLICATIONS
- xDSL LINE DRIVER
- BROADBAND VIDEO BUFFERS
- HIGH-SPEED IMAGING CHANNELS
- PORTABLE INSTRUMENTS
- ADC BUFFERS
- ACTIVE FILTERS
- WIDEBAND INVERTING SUMMING
- HIGH SFDR IF AMPLIFIER

All trademarks are the property of their respective owners.

FLEXIBLE SUPPLY RANGE:
+5V to +12V Single-Supply
±2.5V to ±6V Dual-Supply
UNITY-GAIN STABLE: 280MHz (G =1)
HIGH OUTPUT CURRENT: 190mA
OUTPUT VOLTAGE SWING: ±4.0V
HIGH SLEW RATE: 2100V/µs
LOW dG/d: 0.07%/0.02°
LOW SUPPLY CURRENT: 5.1mA
LOW DISABLED CURRENT: 150µA
WIDEBAND +5V OPERATION: 190MHz (G = +2)
APPLICATIONS
- xDSL LINE DRIVER
- BROADBAND VIDEO BUFFERS
- HIGH-SPEED IMAGING CHANNELS
- PORTABLE INSTRUMENTS
- ADC BUFFERS
- ACTIVE FILTERS
- WIDEBAND INVERTING SUMMING
- HIGH SFDR IF AMPLIFIER

All trademarks are the property of their respective owners.

The OPA691 sets a new level of performance for broadband current feedback op amps. Operating on a very low 5.1mA supply current, the OPA691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA691’s low 5.1mA supply current is precisely trimmed at 25°C. This trim, along with low drift over-temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA691 supply current drops to less than 150µA while the output goes into a high impedance state. This feature may be used for power savings.

The OPA691 sets a new level of performance for broadband current feedback op amps. Operating on a very low 5.1mA supply current, the OPA691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA691 can deliver a 1V to 4V output swing with over 150mA drive current and 190MHz bandwidth. This combination of features makes the OPA691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA691’s low 5.1mA supply current is precisely trimmed at 25°C. This trim, along with low drift over-temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA691 supply current drops to less than 150µA while the output goes into a high impedance state. This feature may be used for power savings.

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技術文件

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重要文件	類型	標題	格式選項	日期
*	資料表	Wideband, Current Feedback Operational Amplifier With Disable datasheet (Rev. D)		2008/7/2
	技術文章	3 common questions when designing with high-speed amplifiers	PDF \| HTML	2020/7/17
	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-SOT-1A User's Guide (Rev. B)		2012/4/12
	應用說明	A Numerical Solution to an Analog Problem		2010/4/25
	應用說明	Wireline Data Transmission and Reception		2010/1/27
	類比設計期刊	Expanding the usability of current-feedback amplifiers		2005/2/28
	類比設計期刊	Active filters using current-feedback amplifiers		2005/2/25
	應用說明	Noise Analysis for High Speed Op Amps (Rev. A)		2005/1/17
	應用說明	Stabilizing Current-Feedback Op Amps While Optimizing Circuit Performance		2004/4/28
	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
	應用說明	Current Feedback Amplifiers: Review, Stability Analysis, and Applications		2000/11/20

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DEM-OPA-SO-1A — 適用於 SO-8 封裝的單路運算放大器評估模組

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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