參數(shù)資料
型號: AD7707BR
廠商: Analog Devices Inc
文件頁數(shù): 26/52頁
文件大小: 0K
描述: IC ADC 16BIT 3CH 20-SOIC
標準包裝: 37
位數(shù): 16
采樣率(每秒): 500
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): 1mW
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: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC W
包裝: 管件
輸入數(shù)目和類型: 1 個單端,單極;1 個單端,雙極;2 個偽差分,單極;2 個偽差分,雙極
AD7707
Rev. B | Page 32 of 52
POWER-UP AND CALIBRATION
On power-up, the AD7707 performs an internal reset that sets
the contents of the internal registers to a known state. There are
default values loaded to all registers after power-on or reset. The
default values contain nominal calibration coefficients for the
calibration registers. However, to ensure correct calibration for
the device, a calibration routine should be performed after
power-up. A calibration should be performed if the update rate
or gain are changed.
The power dissipation and temperature drift of the AD7707 are
low and no warm-up time is required before the initial calibration
is performed. However, if an external reference is being used,
this reference must stabilize before calibration is initiated.
Similarly, if the clock source for the part is generated from a
crystal or resonator across the MCLK pins, the start-up time for
the oscillator circuit should elapse before a calibration is
initiated on the part (see the Clocking and Oscillator Circuit
section).
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