OPA2837开发板套件编程器的评估板-运算放大器规格书PDF中文资料

OPA2837属于开发板套件编程器的评估板-运算放大器。由德州仪器制造生产的OPA2837评估板 - 运算放大器运算放大器评估板是装有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了运算放大器实例。每个 IC 的通道类型有单通道、双通道、三通道、四通道和八通道，放大器类型包括音频、自动归零、缓冲器、斩波器、电流反馈、电流检测、差动、差分、四通道、仪表、隔离、J-FET、限幅、对数、功率、可编程增益、采样保持、跨阻、可变增益、视频、电压反馈和零漂移。

1 Features

1• Bandwidth: 105 MHz (AV = 1 V/V)

• Very Low (Trimmed) Supply Current: 600 μA

• Gain Bandwidth Product: 50 MHz

• Slew Rate: 105 V/μs

• Negative Rail Input, Rail-to-Rail Output

• Single-Supply Operating Range: 2.7 V to 5.4 V

• 25°C Input Offset: ±130 μV (Max)

• Input Offset Voltage Drift (DCK Package):

< ±1.6 μV/°C (Maximum)

• Input Voltage Noise: 4.7 nV/√Hz (> 100 Hz)

• HD2: –120 dBc at 2 VPP, 100 kHz

• HD3: –145 dBc at 2 VPP, 100 kHz

• Settling Time: 35 ns, 0.5-V Step to 0.1

• 5-μA Shutdown Current With Fast Recovery From

Shutdown for Power Scaling Applications

2 Applications

• 12-Bit to 16-Bit, Low-Power SAR Drivers

• Precision ADC Reference Buffers

• Very-Low-Power Active Filters

• Low-Power Transimpedance Amplifiers

• Sensor Signal Conditioning

• Wearable Devices

• Low-Side Current Sensing

3 Description

The OPA837 and OPA2837 are single- and dualchannel

unity-gain stable, voltage-feedback amplifiers

that provide among the highest MHz per mW of

bandwidth versus power among precision op amps.

Using only 600 μA per channel on a single 5-V

supply, these 3.0-mW devices deliver 105-MHz

bandwidth at a gain of 1 V/V. The very low trimmed

offset voltage of ±130 μV (maximum) comes with a

typical (±1σ) drift of ±0.4 μV/°C.

Ideally suited to single-ended, successiveapproximation

register (SAR) analog-to-digitalconverter

(ADC) driving applications, the OPAx837

provides one of the lowest input spot noise levels at

4.7 nV/√Hz for the 3-mW quiescent power. The very

high 50-MHz gain bandwidth product provides the low

output impedance to high frequencies required to

supply the fast charging currents in SAR ADC driver

applications. This low dynamic output impedance is

also suitable for reference buffer applications with

precision ADCs. The single-channel OPA837 is

available in a 6-pin SOT-23 package (that includes a

power shutdown feature) and a 5-pin SC70 package

whereas the dual-channel OPA2837 is available in an

8-pin VSSOP package and a 10-pin WQFN package.

The OPAx837 is characterized for operation over the

a wide temperature range of –40°C to +125°C.