ZHCSJY2A June 2019 – September 2019 OPA2834
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文档支持
- 13机械、封装和可订购信息
9.1.1 Noninverting Amplifier
The OPA2834 can be used as a noninverting amplifier with a signal input to the noninverting input, VIN+. Figure 45 illustrates a basic block diagram of the circuit.
The amplifier output can be calculated according to Equation 1 if VIN = VREF + VSIG.
The signal gain of the circuit is set by 
, and VREF provides a reference around which the input and output signals swing. Output signals are in-phase with the input signals.
The OPA2834 is designed for the nominal value of RF to be 3.6 kΩ in gains other than +1. This value gives excellent distortion performance, maximum bandwidth, best flatness, and best pulse response. RF = 3.6 kΩ must be used as a default unless other design goals require changing to other values. All test circuits used to collect data for this document have RF = 3.6 kΩ for all gains other than +1. A gain of +1 is a special case where RF is shorted and RG is left open.