- 您現在的位置：買賣IC網 > PDF目錄373915 > AD7731EB (Analog Devices, Inc.) Precision, Zero-Drift Instrumentation Amplifier; Package: SO; No of Pins: 16; Temperature Range: 0°C to +70°C PDF資料下載
參數資料
| 型號： | AD7731EB |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision, Zero-Drift Instrumentation Amplifier; Package: SO; No of Pins: 16; Temperature Range: 0°C to +70°C |
| 中文描述： | 低噪聲高通量24位Σ-Δ模數轉換器（411.99十一） |
| 文件頁數： | 7/44頁 |
| 文件大小： | 411K |
| 代理商： | AD7731EB |
第1頁第2頁第3頁第4頁第5頁第6頁當前第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
AD7731
–7–
REV. 0
FASTSTEP
FILTER
CHOP
ANALOG
INPUT
DIGITAL
OUTPUT
BUFFER
SKIP
OUTPUT
SCALING
22-TAP
FIR FILTER
THE ANALOG INPUT TO THE PART
CAN BE CHOPPED. IN CHOPPING MODE,
THE INPUT IS CHOPPEDAND THE OUTPUT OF
THE FIRST STAGE FILTER IS CHOPPED
REMOVING ERRORS IN THAT PATH.
THE DEFAULT CONDITION IS
CHOPPING DISABLED
THE FIRST STAGE OF THE DIGITAL
FILTERING ON THE PART IS THE
SINC
3
FILTER. THE OUTPUT UPDATE
RATE AND BANDWIDTH OF THIS
FILTER CAN BE PROGRAMMED. IN
SKIP MODE, THE SINC
3
FILTER IS
THE ONLY FILTERING PERFORMED
ON THE P3T.
IN SKIP MODE, THERE IS NO
SECOND STAGE OF FILTERING ON
THE PART. THE SINC
3
FILTER IS
THE ONLY FILTERING PERFORMED
ON THE PART. THIS IS THE
SECOND STAGE FILTER
WITH SKIP DISABLED, THE NORMAL
OPERATING MODE OF THE SECOND STAGE
OF THE DIGITAL FILTERING ON THE PART IS
A FIXED 22-TAP FIR FILTER. IN SKIP MODE,
THIS FIR FILTER IS BYPASSED. WHEN
FASTSTEP
MODE IS ENABLED AND A
STEP INPUT IS DETECTED, THE SECOND
STAGE FILTERING IS PERFORMED BY THE
FAST STEP FILTER UNTIL THE OUTPUT OF
THIS FILTER HAS FULLY SETTLED
THE OUTPUT WORD FROM THE
DIGITAL FILTER IS SCALED BY THE
CALIBRATION COEFFICIENTS
BEFORE BEING PROVIDED AS THE
CONVERSION RESULT
WHEN FASTSTEP MODE IS
ENABLED AND A STEP CHANGE ON
THE INPUT HAS BEEN DETECTED,
THE SECOND STAGE FILTERING IS
PERFORMED BY THE FASTSTEP
FILTER UNTIL THE FIR FILTER HAS
FULLY SETTLED.
THE OUTPUT OF THE FIRST STAGE
OF FILTERING ON THE PART CAN
BE CHOPPED. THE DEFAULT
CONDITION IS CHOPPING
DISABLED
THE PROGRAMMABLE GAIN
CAPABILITY OF THE PART IS
INCORPORATED AROUND THE
SIGMA DELTA MODULATOR.THE
MODULATOR PROVIDES A HIGH-
FREQUENCY 1-BIT DATA STREAM
TO THE DIGITAL FILTER.
THE INPUT SIGNAL IS BUFFERED
ON-CHIP BEFORE BEING APPLIED
TO THE SAMPLING CAPACITOR OF
THE SIGMA DELTA MODULATOR.
THIS ISOLATES THE SAMPLING
CAPACITOR CHARGING CURRENTS
FROM THE ANALOG INPUT PINS
PGA &
SIGMA-DELTA
MODULATOR
SINC
3
FILTER
CHOP
INPUT CHOPPING
SINC
3
FILTER
SKIP MODE
22-TAP FIR FILTER
OUTPUT SCALING
FASTSTEP
FILTER
YY
OUTPUT CHOPPING
PGA & SIGMA-DELTA
MODULATOR
BUFFER
SEE PAGE 25
SEE PAGE 25
SEE PAGE 25
SEE PAGE 26
SEE PAGE 29
SEE PAGE 28
SEE PAGE 25
SEE PAGE 24
SEE PAGE 23
Figure 3. Signal Processing Chain
PIN CONFIGURAT ION
SCLK
MCLK IN
DGND
DV
DD
SYNC
NC
RDY
CS
MCLK OUT
POL
DIN
DOUT
AGND
AV
DD
AIN5
AIN1
STANDBY
14
1
2
24
23
5
6
7
20
19
18
3
4
22
21
8
17
9
16
10
15
11
TOP VIEW
(Not to Scale)
12
13
AD7731
RESET
REF IN(–)
REF IN(+)
AIN2
AIN3/D1
AIN4/D0
AIN6
NC = NO CONNECT
PIN FUNCT ION DE SCRIPT IONS
Pin
No.
Pin
Mnemonic
Function
1
SCLK
Serial Clock. Schmitt-T riggered Logic Input. An external serial clock is applied to this input to transfer
serial data to or from the AD7731. T his serial clock can be a continuous clock with all data transmitted in a
continuous train of pulses. Alternatively, it can be a noncontinuous clock with the information being trans-
mitted to or from the AD7731 in smaller batches of data.
Master Clock signal for the device. T his can be provided in the form of a crystal/resonator or external clock.
A crystal/resonator can be tied across the MCLK IN and MCLK OUT pins. Alternatively, the MCLK IN
pin can be driven with a CMOS-compatible clock and MCLK OUT left unconnected. T he part is specified
with a clock input frequency of 4.9152 MHz.
2
MCLK IN
相關PDF資料 |
PDF描述 |
|---|---|
| AD7732 | 2-Channel, +-10 V Input Range, High Throughput, 24-Bit SIGMA- ADC |
| AD7732BRU | 2-Channel, +-10 V Input Range, High Throughput, 24-Bit SIGMA- ADC |
| AD773A | 10-Bit, 20 MSPS Monolithic A/D Converter |
| AD773AJD | 10-Bit, 20 MSPS Monolithic A/D Converter |
| AD773AKD | 10-Bit, 20 MSPS Monolithic A/D Converter |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7732 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2-Channel, +-10 V Input Range, High Throughput, 24-Bit SIGMA- ADC |
| AD7732BRU | 功能描述:IC ADC 24BIT 2-CH 28-TSSOP 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 |
| AD7732BRU-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 15.437ksps 24-bit Serial 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.437KSPS 24BIT SERL 28TSSOP - Tape and Reel |
| AD7732BRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 15.437ksps 24-bit Serial 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 15.437KSPS 24BIT SERL 28TSSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:2 DIFF CH :10V INPUT, 28-BIT SD ADC - Tape and Reel |
| AD7732BRUZ | 功能描述:IC ADC 24BIT 2-CH 28-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 |
發布緊急采購，3分鐘左右您將得到回復。