Type1 Description 35 CNVST DI Conversion Start. A fallin" />
參數(shù)資料
型號: AD7623ASTZRL
廠商: Analog Devices Inc
文件頁數(shù): 2/28頁
文件大?。?/td> 0K
描述: IC ADC 16BIT 1.33MSPS DFF 48LQFP
標(biāo)準(zhǔn)包裝: 2,000
系列: PulSAR®
位數(shù): 16
采樣率(每秒): 1.33M
數(shù)據(jù)接口: 串行,并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 55mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個(gè)差分,雙極
配用: EVAL-AD7623CBZ-ND - BOARD EVALUATION FOR AD7623
AD7623
Rev. 0 | Page 10 of 28
Pin No.
Mnemonic
Type1
Description
35
CNVST
DI
Conversion Start. A falling edge on CNVST puts the internal sample-and-hold into the hold state and
initiates a conversion.
36
AGND
P
Analog Power Ground Pin.
37
REF
AI/O
Reference Output/Input.
When PDREF/PDBUF = low, the internal reference and buffer are enabled, producing 2.048 V on this pin.
When PDREF/PDBUF = high, the internal reference and buffer are disabled, allowing an externally
supplied voltage reference up to AVDD volts. Decoupling is required with or without the internal
reference and buffer. Refer to the Voltage Reference Input section.
38
REFGND
AI
Reference Input Analog Ground.
39
IN
AI
Differential Negative Analog Input.
43
IN+
AI
Differential Positive Analog Input.
45
TEMP
AO
Temperature Sensor Analog Output.
46
REFBUFIN
AI/O
Internal Reference Output/Reference Buffer Input.
When PDREF/PDBUF = low, the internal reference and buffer are enabled, producing the 1.2 V (typical)
band gap output on this pin, which needs external decoupling. The internal fixed gain reference buffer
uses this to produce 2.048V on the REF pin.
When using an external reference with the internal reference buffer (PDBUF = low, PDREF = high),
applying 1.2 V on this pin produces 2.048 V on the REF pin. Refer to the Voltage Reference Input section.
47
PDREF
DI
Internal Reference Power-Down Input.
When low, the internal reference is enabled.
When high, the internal reference is powered down, and an external reference must be used.
48
PDBUF
DI
Internal Reference Buffer Power-Down Input.
When low, the buffer is enabled (must be low when using internal reference).
When high, the buffer is powered-down.
1 AI = analog input; AI/O = bidirectional analog; AO = analog output; DI = digital input; DI/O = bidirectional digital; DO = digital output; P = power.
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