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參數資料
| 型號： | AD7923BRU |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | Four Wall Header; No. of Contacts:60; Pitch Spacing:0.1"; No. of Rows:2; Gender:Header; Body Material:Glass-filled Polyester; Contact Plating:Nickel; Leaded Process Compatible:No; Mounting Type:Through Hole RoHS Compliant: No |
| 中文描述： | 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO16 |
| 封裝： | MO-153AB, TSSOP-16 |
| 文件頁數： | 16/20頁 |
| 文件大小： | 430K |
| 代理商： | AD7923BRU |
–16–
AD7923
REV. 0
INVALID DATA
CHANNEL IDENTIFIER BITS + CONVERSION RESULT
DIN LINE HIGH FOR FIRST DUMMY CONVERSION
DATA IN TO CONTROL REGISTER
TO KEEP THE PART IN NORMAL MODE, LOAD
PM1 = PM0 = 1 IN CONTROL REGISTER
1
14
16
1
14
16
t
12
ALLOW
t
POWER
TO ELAPSE
IF IN SHUTDOWN AT POWER-ON,
PART BEGINS TO POWER UP ON
CS
RISING EDGE AS PM1 = PM0 = 1
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
Figure 14a. Placing AD7923 into Normal Mode after Supplies are First Applied
INVALID DATA
1
14
16
PART ENTERS SHUTDOWN ON
CS
RISING EDGE AS PM1 = PM0 = 0
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
DATA IN TO CONTROL REGISTER
CONTROL REGISTER IS LOADED ON
THE FIRST 12 CLOCKS. PM1 = 1, PM0 = 0
Figure 14b. Placing AD7923 into Full Shutdown Mode after Supplies are First Applied
INVALID DATA
INVALID DATA
DIN LINE HIGH FOR FIRST DUMMY CONVERSION
DATA IN TO CONTROL REGISTER
CONTROL REGISTER IS LOADED ON THE
FIRST 12 CLOCKS. PM1 = 0, PM0 = 1
1
14
16
1
14
16
PART IS IN
UNKNOWN MODE
AFTER POWER-ON
CS
SCLK
DOUT
DIN
PART ENTERS AUTO SHUTDOWN ON
CS
RISING EDGE AS PM1 = 0, PM0 = 1
Figure 14c. Placing AD7923 into Auto Shutdown Mode after Supplies are First Applied
POWER VERSUS THROUGHPUT RATE
In Auto Shutdown Mode, the average power consumption of
the ADC may be reduced at any given throughput rate. The
power saving will depend on the SCLK frequency used, i.e.,
conversion time. In some cases where the conversion time is a
large proportion of the cycle time, the throughput rate would
need to be reduced to take advantage of the power-down modes.
Assuming a 20 MHz SCLK is used, the conversion time is 800 ns,
but the cycle time is 5
m
s when the sampling rate is at a maxi-
mum of 200 kSPS. If the AD7923 is placed into shutdown for
the remainder of the cycle time, then on average far less power
will be consumed in every cycle compared to leaving the device
in Normal Mode. Furthermore, Figure 15 shows how, as the
throughput rate is reduced, the part remains in its shutdown
longer and the average power consumption drops accordingly
over time.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7923BRU-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 16-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 200KSPS 12-BIT SERL 16TSSOP - Tape and Reel |
| AD7923BRU-REEL7 | 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 16-Pin TSSOP T/R |
| AD7923BRUZ | 功能描述:IC ADC 12BIT 4CH W/SEQ 16TSSOP 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 |
| AD7923BRUZ-REEL | 功能描述:IC ADC 12BIT 4CH W/SEQ 16TSSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率（每秒）:15 數據接口:MICROWIRE?，串行，SPI? 轉換器數目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD7923BRUZ-REEL7 | 功能描述:IC ADC 12BIT 4CH W/SEQ 16TSSOP 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 |
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