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參數資料
| 型號： | AD7851AN |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 14-Bit 333 kSPS Serial A/D Converter |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, MO-095AG, DIP-24 |
| 文件頁數： | 29/36頁 |
| 文件大小： | 435K |
| 代理商： | AD7851AN |
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–29–
REV. A
AD7851
Interface Mode 1 Configuration
Figure 42 shows the flowchart for configuring the part in Inter-
face Mode 1. T his mode of operation can only be enabled by
writing to the control register and setting the 2/
3
MODE bit.
Reading and writing cannot take place simultaneously in this
mode as the DIN pin is used for both reading and writing.
SERIAL
INTERFACE
MODE
POWER-ON, APPLY CLKIN SIGNAL,
WAIT 150ms FOR AUTOMATIC CALIBRATION
NO
YES
WAIT FOR BUSY SIGNAL TO GO
LOW OR WAIT FOR BUSY BIT = 0
READ
DATA
DURING
CONVERSION
APPLY
SYNC
(IF REQUIRED), SCLK, READ
CURRENT CONVERSION RESULT ON DIN PIN
1
INITIATE
CONVERSION
IN
SOFTWARE
WAIT APPROXIMATLY 200ns
AFTER
CONVST
RISING EDGE
OR AFTER END OF CONTROL
REGISTER WRITE
APPLY
SYNC
(IF REQUIRED),
SCLK, READ PREVIOUS CONVERSION
RESULT ON DIN PIN
NO
YES
APPLY
SYNC
(IF REQUIRED),
SCLK, WRITE TO CONTROL REGISTER
SETTING THE TWO-WIRE MODE
AND CONVST BIT TO 1
START
APPLY
SYNC
(IF REQUIRED),
SCLK, WRITE TO CONTROL REGISTER
SETTING THE TWO-WIRE MODE
PULSE
CONVST
PIN
Figure 42. Flowchart for Setting Up, Reading, and Writing
in Interface Mode 1
Interface Modes 4 and 5 Configuration
Figure 43 shows the flowchart for configuring the AD7851 in
Interface Modes 4 and 5, the self-clocking modes. In this case it
is not recommended to use the software conversion start option.
T he read and write operations always occur simultaneously and
during conversion.
POWER-ON, APPLY CLKIN SIGNAL,
WAIT 150ms FOR AUTOMATIC CALIBRATION
SYNC
AUTOMATICALLY GOES
LOW AFTER
CONVST
RISING EDGE
PULSE
CONVST
PIN
SCLK AUTOMATICALLY ACTIVE, READ CURRENT
CONVERSION RESULT ON DOUT PIN, WRITE
TO CONTROL REGISTER ON DIN PIN
4, 5
START
SERIAL
INTERFACE
MODE
Figure 43. Flowchart for Setting Up, Reading, and Writing
in Interface Modes 4 and 5
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| AD7851AR | 14-Bit 333 kSPS Serial A/D Converter |
| AD7851ARS | 14-Bit 333 kSPS Serial A/D Converter |
| AD7851KN | 14-Bit 333 kSPS Serial A/D Converter |
| AD7851KR | 14-Bit 333 kSPS Serial A/D Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7851ANZ | 功能描述:IC ADC 14BIT SRL 333KSPS 24-DIP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:12 采樣率（每秒）:3M 數據接口:- 轉換器數目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數目和類型:- |
| AD7851AR | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:14 BIT SELF CALIBRATION ADC I.C. - Bulk |
| AD7851AR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SOIC W T/R |
| AD7851ARS | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SSOP 制造商:Analog Devices 功能描述:IC 14-BIT ADC |
| AD7851ARS-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SSOP T/R |
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