REF/GAIN TO 2.1 × V
參數資料
型號: AD7705BN
廠商: Analog Devices Inc
文件頁數: 20/44頁
文件大?。?/td> 0K
描述: IC ADC 16BIT 2CH 16-DIP
標準包裝: 25
位數: 16
采樣率(每秒): 500
數據接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉換器數目: 1
功率耗散(最大): 1mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 16-DIP(0.300",7.62mm)
供應商設備封裝: 16-PDIP
包裝: 管件
輸入數目和類型: 2 個差分,單極;2 個差分,雙極
配用: EVAL-AD7705EBZ-ND - BOARD EVALUATION FOR AD7705
AD7705/AD7706
Rev. C | Page 27 of 44
AD7705/AD7706
INPUT RANGE
(0.8
× V
REF/GAIN TO
2.1
× V
REF/GAIN)
UPPER LIMIT ON
AD7705 INPUT VOLTAGE
NOMINAL ZERO
SCALE POINT
OFFSET CALIBRATIONS MOVE
INPUT RANGE UP OR DOWN
LOWER LIMIT ON
AD7705/AD7706 INPUT VOLTAGE
–1.05
× V
REF/GAIN
–0V DIFFERENTIAL
GAIN CALIBRATIONS EXPAND
OR CONTRACT THE
AD7705/AD7706 INPUT RANGE
1.05
× V
REF/GAIN
01166-016
Figure 16. Span and Offset Limits
If the part is used in bipolar mode with a required span of
±0.4 × VREF/gain, the offset range that the system calibration can
handle is –0.65 × VREF/gain to +0.65 × VREF/gain. If
the part is used in bipolar mode with a required span of
±VREF/gain, the offset range that the system calibration can
handle is –0.05 × VREF/gain to +0.05 × VREF/gain. Similarly, if the
part is used in bipolar mode and required to remove an offset of
±0.2 × VREF/gain, the maximum span range that the system
calibration can handle is ±0.85 × VREF/gain.
Power-Up and Calibration
Upon power-up, the AD7705/AD7706 internally reset, setting
the contents of the internal registers to a known state. Default
values are loaded to all registers after a power-on or reset. The
default values contain nominal calibration coefficients for the
calibration registers. However, to ensure correct calibration for the
devices, a calibration routine should be performed after power-up.
The power dissipation and temperature drift of the AD7705/
AD7706 are low, and no warm-up time is required before the
initial calibration is performed. However, if an external reference
is used, it must be stabilized 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 parts (see Figure 11).
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參數描述
AD7705BNZ 功能描述:IC ADC 16BIT 2CH 16-DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率(每秒):20M 數據接口:并聯 轉換器數目:2 功率耗散(最大):155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數目和類型:4 個單端,單極;2 個差分,單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7705BNZ1 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V/5 V, 1 mW, 2-/3-Channel, 16-Bit, Sigma-Delta ADCs
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AD7705BR-REEL7 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 16-Pin SOIC W T/R