参数资料
型号: AD7265BSUZ-REEL7
厂商: Analog Devices Inc
文件页数: 29/29页
文件大小: 0K
描述: IC ADC 12BIT 3CHAN 1MSPS 32TQFP
设计资源: AD7265 in Differential and Single-Ended Configurations Using AD8022 (CN0048)
标准包装: 500
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 2
功率耗散(最大): 21mW
电压电源: 模拟和数字
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(7x7)
包装: 带卷 (TR)
输入数目和类型: 12 个单端,单极;6 个差分,单极;6 个伪差分,单极
AD7265
Rev. A | Page 8 of 28
Pin No.
Mnemonic
Description
28, 30
DOUTB, DOUTA
Serial Data Outputs. The data output is supplied to each pin as a serial data stream. The bits are clocked out on
the falling edge of the SCLK input and 14 SCLKs are required to access the data. The data simultaneously appears
on both pins from the simultaneous conversions of both ADCs. The data stream consists of two leading zeros
followed by the 12 bits of conversion data. The data is provided MSB first. If CS is held low for 16 SCLK cycles
rather than 14, then two trailing zeros appear after the 12 bits of data. If CS is held low for a further 16 SCLK
cycles on either DOUTA or DOUTB, the data from the other ADC follows on the DOUT pin. This allows data from a
simultaneous conversion on both ADCs to be gathered in serial format on either DOUTA or DOUTB using only one
serial port. See the Serial Interface section.
31
VDRIVE
Logic Power Supply Input. The voltage supplied at this pin determines at what voltage the interface operates.
This pin should be decoupled to DGND. The voltage at this pin may be different than that at AVDD and DVDD but
should never exceed either by more than 0.3 V.
32
DVDD
Digital Supply Voltage, 2.7 V to 5.25 V. This is the supply voltage for all digital circuitry on the AD7265. The DVDD
and AVDD voltages should ideally be at the same potential and must not be more than 0.3 V apart even on a
transient basis. This supply should be decoupled to DGND.
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