參數(shù)資料
型號: AD7738BRU
廠商: Analog Devices Inc
文件頁數(shù): 27/28頁
文件大?。?/td> 0K
描述: IC ADC 24BIT 8-CH 28-TSSOP
標(biāo)準(zhǔn)包裝: 50
位數(shù): 24
采樣率(每秒): 15.4k
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 100mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 28-TSSOP
包裝: 管件
輸入數(shù)目和類型: 8 個單端,單極;8 個單端,雙極;4 個差分,單極;4 個差分,雙極
配用: EVAL-AD7738EBZ-ND - BOARD EVAL FOR AD7738
REV. 0
–8–
AD7738
PIN FUNCTION DESCRIPTION (continued)
Pin No.
Mnemonic
Pin Description
15
ADCIN(–)
ADC Negative Input. In normal circuit configuration, this pin should be connected to the MUXOUT– pin.
16
ADCIN(+)
ADC Positive Input. In normal circuit configuration, this pin should be connected to the MUXOUT+ pin.
21
REFIN(+)
Positive Terminal of the Differential Reference Input. REFIN+ voltage potential can lie any where between
AVDD and AGND. In normal circuit configuration, this pin should be connected to a 2.5 V reference voltage.
22
REFIN(–)
Negative Terminal of the Differential Reference Input. REFIN– voltage potential can lie any where between
AVDD and AGND. In normal circuit configuration, this pin should be connected to a 0 V reference voltage.
23
AGND
Ground Reference Point for Analog Circuitry
24
RDY
Logic Output. Used as a status output in both conversion mode and calibration mode. In conversion
mode, a falling edge on this output indicates that either any channel or all channels have unread data
available—according to the RDY function bit in the I/O Port register. In calibration mode, a falling edge
on this output indicates that calibration is complete. See more details in Digital Interface Description
section later in this data sheet.
25
DOUT
Serial Data Output with serial data being read from the output shift register on the part. This output
shift register can contain information from any AD7738 register depending on the address bits of the
Communications register.
26
DIN
Serial Data Input (Schmitt triggered) with serial data being written to the input shift register on the part.
Data from this input shift register is transferred to any AD7738 register depending on the address bits of
the Communications register.
27
DVDD
Digital Supply Voltage, 3 V or 5 V Nominal
28
DGND
Ground Reference Point for Digital Circuitry
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