ZHCSFV5B December 2016 – November 2018 INA1650 , INA1651
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
-
8 Application and Implementation
- 8.1 Application Information
- 8.2
Typical Applications
- 8.2.1 Line Receiver for Differential Audio Signals in a Split-Supply System
- 8.2.2 Differential Line Receiver for Single-Supply Applications
- 8.2.3 Floating Single-Ended Input Line Receiver for Ground Loop Noise Reduction
- 8.2.4 Floating Single-Ended Input Line Receiver With Differential Outputs
- 8.2.5 TRS Audio Interface in Single-Supply Applications
- 8.2.6 Differential Line Driver With Single-Ended Input
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文档支持
- 12机械、封装和可订购信息
8.2.1.2 Detailed Design Procedure
The passive components shown in Figure 51 are selected using the information given in the Application Information and Layout Guidelines sections. All 10-µF input AC-coupling capacitors (C1, C2, C3, and C4) maximize the CMRR performance at low frequency, as shown in Figure 48. The high-pass corner frequency for input signals meets the design requirement for frequency response, as Equation 6 shows:
1-MΩ RCOM resistors (R3 and R4) further improve CMRR performance at low frequency. Resistors R1, R2, R4, and R5 provide a discharge pathway for the AC-coupling capacitors in the event that audio equipment with a DC offset voltage is connected to the inputs of the circuit. These resistors are optional and may degrade the CMRR performance with mismatches in source impedance. Finally, capacitors C5, C6, C7, and C8 provide a low-impedance pathway for power supply noise to pass to ground rather than interfering with the audio signal. No connection is necessary on the VMID(IN) and VMID(OUT) pins because the supply-divider circuit is not used in this particular application.