[新“芯”速递] AD7578 --- 12位逐次逼近ADC

    AD7578是一款中速、单片、12-bit CMOS A/D 转换器，它使用逐次逼近技术，转换时间 100μs，在每次转换的开始有一个auto-zero ，因此有非常低的误差失调电压， 典型值100μV，IC设计有非常方便的MCU接口来控制ADC

在8位数据总路线的CPU中使用时，转换结果由8个低位和四个高位组成

在使用5V参考源时，模拟电压输入范围为  0V -+5


主要特性：
The AD7578 is a complete 12-bit A/D converter in a 24-pin
package requiring only a few passive components and a voltge reference
Autozero cycle realizes very low offset voltages, typically 100μV
Standard microprocessor control signals to allow easy interfacing
to most popular 8- and 16-bit processors.
Monolithic construction for increased reliability and small 0.3", 24-pin package.

特点和优势

• 12-Bit Successive Approximation ADC
• No Missed Codes Over Full Temperature Range
• Low Total Unadjusted Error ±1LSB max
• High Impedance Analog Input
  

• Autozero Cycle for Low Offset Voltage
• Low Power, 75mW typ
• Small Size: 0.3", 24-Pin Package
• Conversion Time of 100μs