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參數資料
| 型號： | AD7714YRU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 3 V/5 V, CMOS, 500 uA Signal Conditioning ADC |
| 中文描述： | 5-CH 24-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數： | 15/40頁 |
| 文件大小： | 306K |
| 代理商： | AD7714YRU |
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2
AD7714
REV. C
–15–
CH2
CH1
CH0
AIN(+)
AIN(–)
Type
Calibration Register Pair
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
AIN1
AIN2
AIN3
AIN4
AIN1
AIN3
AIN5
AIN6
AIN6
AIN6
AIN6
AIN6
AIN2
AIN4
AIN6
AIN6
Pseudo Differential
Pseudo Differential
Pseudo Differential
Pseudo Differential
Fully Differential
Fully Differential
Fully Differential
Test Mode
Register Pair 0
Register Pair 1
Register Pair 2
Register Pair 2
Register Pair 0
Register Pair 1
Register Pair 2
Register Pair 2
Mode Register (RS2-RS0 = 0, 0, 1); Power On/Reset Status: 00Hex
The Mode Register is an eight bit register from which data can either be read or to which data can be written. Table VIII outlines the
bit designations for the Mode Register.
Table VIII. Mode Register
MD2
MD1
MD0
G2
G1
G0
BO
FSYNC
MD2
MD1
MD0
Operating Mode
0
0
0
Normal Mode; this is the normal mode of operation of the device whereby the device is performing nor-
mal conversions. This is the default condition of these bits after Power-On or
RESET
.
Self-Calibration; this activates self-calibration on the channel selected by CH2, CH1 and CH0 of the
Communications Register. This is a one step calibration sequence and when complete the part returns to
Normal Mode with MD2, MD1 and MD0 returning to 0, 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
CH2, CH1 and CH0 of the Communications Register. 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. 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 MD2, MD1 and
MD0 returning to 0, 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 MD2, MD1 and MD0 returning to 0, 0, 0.
0
0
1
0
1
0
0
1
1
Table VII. Channel Selection
CH2–CH0
Channel Select. These three bits select a channel either for conversion or for access to calibration coefficients as
outlined in Table VII. There are three pairs of calibration registers on the part. In fully differential mode, the part
has three input channels so each channel has its own pair of calibration registers. In pseudo-differential mode, the
AD7714 has five input channels with some of the input channel combinations sharing calibration registers. With
CH2, CH1 and CH0 at a logic 1, the part looks at the AIN6 input internally shorted to itself. This can be used as
a test method to evaluate the noise performance of the part with no external noise sources. In this mode, the AIN6
input should be connected to an external voltage within the allowable common-mode range for the part. The
Power-On or RESET status of these bits is 1,0,0 selecting the differential pair AIN1 and AIN2.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7714YRU-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 1ksps 24-bit Serial 24-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 1KSPS 24BIT SERL 24TSSOP - Tape and Reel |
| AD7714YRU-REEL7 | 功能描述:IC ADC 24BIT SIGMA-DELTA 24TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目: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） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7714YRUZ | 功能描述:IC ADC SIGNAL COND 3/5V 24-TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7714YRUZ | 制造商:Analog Devices 功能描述:A/D Converter (A-D) IC |
| AD7714YRUZ-REEL | 功能描述:IC ADC 24BIT SIGMA-DELTA 24TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目: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） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
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