OPA657

現行

1.6GHz 低雜訊 FET 輸入運算放大器

立即訂購

產品規格表

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

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OPA818

現行

2.7-GHz、13-V、補償不全 7-V/V、FET 輸入運算放大器 This device has lower noise (2.2 nV/rtHz) and higher gain-bandwidth (2.7 GHz)

OPA657

現行

產品規格表

立即訂購

產品詳細資料

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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重要文件	類型	標題	格式選項	日期
*	資料表	OPA657 1.6-GHz, Low-Noise, FET-Input Operational Amplifier datasheet (Rev. F)	PDF \| HTML	2015/8/31
	技術文章	3 common questions when designing with high-speed amplifiers	PDF \| HTML	2020/7/17
	應用說明	Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A)		2017/5/16
	電子書	The Signal e-book: A compendium of blog posts on op amp design topics	PDF \| HTML	2017/3/28
	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	DEM-OPA-SOT-1B User's Guide (Rev. B)		2006/4/12
	類比設計期刊	Using a decompensated op amp for improved performance		2005/3/11
	類比設計期刊	Designing for low distortion with high-speed op amps		2005/3/2
	應用說明	Noise Analysis for High Speed Op Amps (Rev. A)		2005/1/17
	應用說明	Measuring Board Parasitics in High-Speed Analog Design		2003/7/7
	應用說明	Voltage Feedback vs. Current Feedback Op Amps		1998/11/30

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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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