ZHCSK88A September 2010 – September 2019 ADS7947 , ADS7948 , ADS7949
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
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions: ADS794x (12-, 10-, 8-Bit)
- 7.4 Thermal Information
- 7.5 Electrical Characteristics: ADS7947 (12-Bit)
- 7.6 Electrical Characteristics: ADS7948 (10-Bit)
- 7.7 Electrical Characteristics: ADS7949 (8-Bit)
- 7.8 Timing Requirements
- 7.9 Switching Characteristics
- 7.10 Typical Characteristics: ADS7947, ADS7948, ADS7949
- 7.11 Typical Characteristics: ADS7947 (12-Bit)
- 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
11.1 Layout Guidelines
ADCs are mixed-signal devices. For maximum performance, proper decoupling, grounding, and proper termination of digital signals is essential. Figure 55 shows the essential components around the ADC. All capacitors shown are ceramic. These decoupling capacitors must be placed close to the respective signal pins.
There is a 47-Ω source series termination resistor shown on the SDO signal. This resistor must be placed as close to pin 15 as possible. Series terminations for SCLK and CS must be placed close to the host.
