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參數(shù)資料
型號(hào)： AD7858L*
廠商： Analog Devices, Inc.
英文描述： 3 V to 5 V Single Supply. 200 kSPS 8-Channel. 12-Bit Sampling ADC
中文描述： 3 V至5 V單電源。 200 kSPS的8通道。 12位采樣ADC
文件頁(yè)數(shù)： 10/32頁(yè)
文件大小： 315K
REV. B
–10–
AD7858/AD7858L
CONTROL REGISTER
The arrangement of the Control Register is shown below. The control register is a write only register and contains 14 bits of data.
The control register is selected by putting two 1s in ADDR1 and ADDR0. The function of the bits in the control register are de-
scribed below. The power-up status of all bits is 0.
MSB
SGL/
DIFF
CH2
CH1
CH0
PMGT1
PMGT0
RDSLT1
RDSLT0
2/
3
MODE
CONVST
CALMD
CALSLT1
CALSLT0
STCAL
LSB
CONTROL REGISTER BIT FUNCTION DESCRIPTION
Bit
Mnemonic
Comment
13
SGL/
DIFF
A 0 in this bit position configures the input channels in pseudo-differential mode. A 1 in this bit position
configures the input channels in single-ended mode (see Table III).
These three bits are used to select the channel on which the conversion is performed. The channels can
be configured as eight single-ended channels or four pseudo-differential channels. The default selection
is AIN1 for the positive input and AIN2 for the negative input (see Table III for channel selection).
Power Management Bits. These two bits are used with the
SLEEP
pin for putting the part into various
Power-Down Modes (see Power-Down section for more details).
Theses two bits determine which register is addressed for the read operations (see Table II).
12
11
10
9
8
7
6
5
CH2
CH1
CH0
PMGT1
PMGT0
RDSLT1
RDSLT0
2/
3
MODE
Interface Mode Select Bit. With this bit set to 0, Interface Mode 2 is enabled. With this bit set to 1,
Interface Mode 1 is enabled where DIN is used as an output as well as an input. This bit is set to 0 by
default after every read cycle; thus when using the Two-Wire Interface Mode, this bit needs to be set to
1 in every write cycle.
Conversion Start Bit. A logic one in this bit position starts a single conversion, and this bit is automati-
cally reset to 0 at the end of conversion. This bit may also be used in conjunction with system calibration
(see Calibration section.)
Calibration Mode Bit. A 0 here selects self-calibration, and a 1 selects a system calibration (see Table IV).
Calibration Selection Bits and Start Calibration Bit. These bits have two functions.
With the STCAL bit set to 1 the CALSLT1 and CALSLT0 bits determine the type of calibration per
formed by the part (see Table IV). The STCAL bit is automatically reset to 0 at the end of calibration.
With the STCAL bit set to 0 the CALSLT1 and CALSLT0 bits are decoded to address the calibration
register for read/write of calibration coefficients (see section on the Calibration Registers for more details).
4
CONVST
3
2
1
0
CALMD
CALSLT1
CALSLT0
STCAL
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7858LAN 制造商:Analog Devices 功能描述:
AD7858LAN3 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LANZ 功能描述:IC ADC 12BIT 8CHAN SRL 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個(gè)單端，單極；1 個(gè)單端，雙極
AD7858LAR 制造商:Analog Devices 功能描述:ADC Single SAR 100ksps 12-bit Serial 24-Pin SOIC W
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