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參數(shù)資料
| 型號： | AD7706BN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | ECONOLINE: REC2.2-S_DRW(Z)/H* - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- 4.5-9V, 9-18V, 18-36V, 36-72V Wide Input Range 2 : 1- UL94V-0 Package Material- Continuous Short Circiut Protection- Cost Effective- 100% Burned In- Efficiency to 84% |
| 中文描述： | 3-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDIP16 |
| 封裝： | 0.300 INCH, PLASTIC, MS-001AB, DIP-16 |
| 文件頁數(shù)： | 12/32頁 |
| 文件大?。?/td> | 264K |
| 代理商： | AD7706BN |
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AD7705/AD7706
–12–
REV. A
Setup Register (RS2, RS1, RS0 = 0, 0, 1); Power-On/Reset Status: 01Hex
The Setup Register is an eight bit register from which data can either be read or to which data can be written. Table IX outlines the
bit designations for the Setup Register.
Table IX. Setup Register
MD1 (0)
MD0 (0)
G2 (0)
G1 (0)
G0 (0)
B
/U (0)
BUF (0)
FSYNC (1)
MD1
MD0
Operating Mode
0
0
Normal Mode: this is the normal mode of operation of the device whereby the device is performing normal
conversions.
Self-Calibration: this activates self-calibration on the channel selected by CH1 and CH0 of the Communica-
tions Register. This is a one-step calibration sequence and when complete the part returns to Normal Mode
with MD1 and MD0 returning to 0, 0. The
DRDY
output or bit goes high when calibration is initiated and
returns low when this self-calibration is complete and a new valid word is available in the data register. The
zero-scale calibration is performed at the selected gain on internally shorted (zeroed) inputs and the full-
scale calibration is performed at the selected gain on an internally-generated V
REF
/Selected Gain.
Zero-Scale System Calibration: this activates zero scale system calibration on the channel selected by CH1
and CH0 of the Communications Register. Calibration is performed at the selected gain on the input volt-
age provided at the analog input during this calibration sequence. This input voltage should remain stable
for the duration of the calibration. The
DRDY
output or bit goes high when calibration is initiated and
returns low when this zero-scale calibration is complete and a new valid word is available in the data register.
At the end of the calibration, the part returns to Normal Mode with MD1 and MD0 returning to 0, 0.
Full-Scale System Calibration: this activates full-scale system calibration on the selected input channel.
Calibration is performed at the selected gain on the input voltage provided at the analog input during this
calibration sequence. This input voltage should remain stable for the duration of the calibration. Once
again, the
DRDY
output or bit goes high when calibration is initiated and returns low when this full-scale
calibration is complete and a new valid word is available in the data register. At the end of the calibration,
the part returns to Normal Mode with MD1 and MD0 returning to 0, 0.
0
1
1
0
1
1
G2–G0
Gain Selection Bits. These bits select the gain setting for the on-chip PGA as outlined in Table X.
Table X. Gain Selection
G2
G1
G0
Gain Setting
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
2
4
8
16
32
64
128
B
/U
BUF
Bipolar/Unipolar Operation. A “0” in this bit selects Bipolar Operation. A “1” in this bit selects Unipolar Operation.
Buffer Control. With this bit at “0,” the on-chip buffer on the analog input is shorted out. With the buffer shorted
out, the current flowing in the V
DD
line is reduced. When this bit is high, the on-chip buffer is in series with the
analog input allowing the input to handle higher source impedances.
Filter Synchronization. When this bit is high, the nodes of the digital filter, the filter control logic and the calibra-
tion control logic are held in a reset state and the analog modulator is also held in its reset state. When this bit
goes low, the modulator and filter start to process data and a valid word is available in 3
×
1/(output update rate),
i.e., the settling time of the filter. This FSYNC bit does not affect the digital interface and does not reset the
DRDY
output if it is low.
FSYNC
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| AD7706BNZ | 功能描述:IC ADC 16BIT 3CHAN 16DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 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-TQFP 供應(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6 |
| AD7706BNZ1 | 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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