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參數資料
| 型號： | AD7862AN-3 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| 中文描述： | 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁數： | 15/16頁 |
| 文件大?。?/td> | 414K |
| 代理商： | AD7862AN-3 |
AD7862
–15–
REV. 0
VOLTAGE
ATTENUATORS
DAC
DAC
DAC
TORQUE
SETPOINT
A1
V
V
B2
V
B1
V
A2
*ADDITIONAL PINS OMITTED FOR CLARITY
TORQUE & FLUX
CONTROL LOOP
CALCULATIONS &
TWO TO THREE
PHASE
INFORMATION
TRANSFORMATION
TO TORQUE &
FLUX CURRENT
COMPONENTS
FLUX
SETPOINT
DRIVE
CIRCUITRY
ISOLATION
AMPLIFIERS
AD7862*
DSP
MICROPROCESSOR
I
C
I
B
I
A
V
B
V
A
3
PHASE
Figure 19. Vector Motor Control Using the AD7862
MULTIPLE AD7862S
Figure 20 shows a system where a number of AD7862s can be
configured to handle multiple input channels. This type of
configuration is common in applications such as sonar, radar,
etc. The AD7862 is specified with typical limits on aperture
delay. This means that the user knows the difference in the
sampling instant between all channels. This allows the user to
maintain relative phase information between the different
channels.
A common read signal from the microprocessor drives the
RD
input of all AD7862s. Each AD7862 is designated a unique
address selected by the address decoder. The reference output
of AD7862 number 1 is used to drive the reference input of all
other AD7862s in the circuit shown in Figure 20. One VREF
pin can drive several AD7862 REF IN pins. Alternatively, an
external or system reference can be used to drive all VREF
inputs. A common reference ensures good full-scale tracking
between all channels.
AD7862(1)
AD7862(2)
AD7862(n)
CS
RD
CS
RD
CS
RD
RD
ADDRESS
VREF
REF IN
REF IN
ADDRESS
DECODE
V
A1
V
B1
V
A2
V
B2
V
A1
V
B1
V
A2
V
B2
V
A1
V
B1
V
A2
V
B2
Figure 20. Multiple AD7862s in Multichannel System
相關PDF資料 |
PDF描述 |
|---|---|
| AD7862AR-10 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7862BR-10 | Simultaneous Sampling Dual 250 kSPS 12-Bit ADC |
| AD7863AR-10 | RECTIFIER SCHOTTKY DUAL 30A 30V 275A-ifsm 0.55V-vf 1mA-ir TO-3P 30/TUBE |
| AD7863BR-10 | RECTIFIER FAST-RECOVERY SINGLE 1A 400V 30A-ifsm 1.3V-vf 50ns 5uA-ir DO-41 1K/BULK |
| AD7863BR-3 | RECTIFIER FAST-RECOVERY SINGLE 1A 600V 30A-ifsm 1.7V-vf 75ns 5uA-ir DO-41 1K/BULK |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7862ANZ-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28DIP 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 |
| AD7862ANZ-3 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7862AR-10 | 功能描述:IC ADC 12BIT DUAL 250KSPS 28SOIC 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 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD7862AR-10REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin SOIC W T/R |
| AD7862AR-2 | 制造商:Analog Devices 功能描述:ADC Dual SAR 250ksps 12-bit Parallel 28-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:DUAL 12-BIT PARALLEL ADC I.C. - Bulk |
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