ZHCSR25 August 2022 ADC3564
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Electrical Characteristics - Power Consumption
- 6.6 Electrical Characteristics - DC Specifications
- 6.7 Electrical Characteristics - AC Specifications
- 6.8 Timing Requirements
- 6.9 Typical Characteristics
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application Information Disclaimer
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RSB|40
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RSB|40
訂購(gòu)信息
8.3.3 Voltage Reference
The ADC3564 provides three different options for supplying the voltage reference to the ADC. An external 1.6 V reference can be directly connected to the VREF input; a voltage 1.2 V reference can be connected to the REFBUF input using the internal gain buffer or the internal 1.2V reference can be enabled to generate a 1.6 V reference voltage. For best performance, the reference noise should be filtered by connecting a 10 uF and a 0.1 uF ceramic bypass capacitor to the VREF pin. The internal reference circuitry of the ADC3564 is shown in Figure 8-9.
Note: The voltage reference mode can be selected using SPI writes or by using the
REFBUF pin (default) as a control pin (Section 8.5.1). If the REFBUF pin is not used for configuration, the REFBUF pin should be
connected to AVDD (even though the REFBUF pin has a weak internal pullup to
AVDD) and the voltage reference option has to be selected using the SPI
interface.
Figure 8-9 Different voltage reference options for ADC3564