- 您現在的位置：買賣IC網 > PDF目錄10685 > AD7321BRUZ (Analog Devices Inc)IC ADC 12BIT+ SAR 2CHAN 14TSSOP PDF資料下載
參數資料
| 型號： | AD7321BRUZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 22/37頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT+ SAR 2CHAN 14TSSOP |
| 標準包裝： | 96 |
| 位數： | 12 |
| 采樣率（每秒）： | 500k |
| 數據接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 17mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 14-TSSOP |
| 包裝： | 管件 |
| 輸入數目和類型： | 2 個單端，單極；2 個單端，雙極；1 個差分，單極；1 個差分，雙極 |
| 產品目錄頁面： | 777 (CN2011-ZH PDF) |
| 配用： | EVAL-AD7321CBZ-ND - BOARD EVALUATION FOR AD7321 |
第1頁第2頁第3頁第4頁第5頁第6頁第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頁當前第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
AD7321
Data Sheet
Rev. B | Page 28 of 36
MODES OF OPERATION
The AD7321 has several modes of operation that are designed
to provide flexible power management options. These options
are chosen to optimize the power dissipation/throughput rate
ratio for different application requirements. The mode of
operation of the AD7321 is controlled by the power management
bits, Bit PM1 and Bit PM0, in the control register as shown in
Table 11. The default mode is normal mode, where all internal
circuitry is fully powered up.
NORMAL MODE
(PM1 = PM0 = 0)
This mode is intended for the fastest throughput rate performance
with the AD7321 being fully powered up at all times. Figure 45
shows the general operation of the AD7321 in normal mode.
The conversion is initiated on the falling edge of CS, and the
track-and-hold section enters hold mode as described in the
Serial Interface section. Data on the DIN line during the
16 SCLK transfer is loaded into one of the on-chip registers if
the write bit is set. The register is selected by programming the
register select bits (see Table 8).
1
16
2 LEADING ZEROS, CHANNEL I.D. BIT, SIGN BIT
+ CONVERSION RESULT
DATA INTO CONTROL/RANGE REGISTER
SCLK
CS
DOUT
DIN
05399-
035
Figure 45. Normal Mode
The AD7321 remains fully powered up at the end of the
conversion if both PM1 and PM0 contain 0 in the control
register.
To complete the conversion and access the conversion result,
16 serial clock cycles are required. At the end of the conversion,
CS can idle either high or low until the next conversion.
Once the data transfer is complete, another conversion can be
initiated after the quiet time, tQUIET, has elapsed.
FULL SHUTDOWN MODE
(PM1 = PM0 = 1)
In this mode, all internal circuitry on the AD7321 is powered
down. The part retains information in the registers during full
shutdown. The AD7321 remains in full shutdown mode until
the power management bits, Bit PM1 and Bit PM0, in the
control register are changed.
A write to the control register with PM1 = 1 and PM0 = 1 places
the part into full shutdown mode. The AD7321 enters full shut-
down mode on the 15th SCLK rising edge once the control register
is updated.
If a write to the control register occurs while the part is in full
shutdown mode with the power management bits, Bit PM1 and
Bit PM0, set to 0 (normal mode), the part begins to power up
on the 15th SCLK rising edge once the control register is
updated. Figure 46 shows how the AD7321 is configured to exit
full shutdown mode. To ensure the AD7321 is fully powered up,
tPOWER-UP should elapse before the next CS falling edge.
CS
1
16
1
16
SCLK
SDATA
DIN
INVALID DATA
CHANNEL IDENTIFIER BITS + CONVERSION RESULT
DATA INTO CONTROL REGISTER
tPOWER-UP
THE PART IS FULLY POWERED UP
ONCE
tPOWER-UP HAS ELAPSED
CONTROL REGISTER IS LOADED ON THE FIRST 15 CLOCKS,
PM1 = 0, PM0 = 0
TO KEEP THE PART IN NORMAL MODE, LOAD PM1 = PM0 = 0
IN CONTROL REGISTER
PART IS IN FULL
SHUTDOWN
PART BEGINS TO POWER UP ON THE 15TH
SCLK RISING EDGE AS PM1 = PM0 = 0
05399-
041
Figure 46. Exiting Full Shutdown Mode
相關PDF資料 |
PDF描述 |
|---|---|
| AD7914BRUZ | IC ADC 10BIT 4CH 1MSPS 16TSSOP |
| AD7992BRMZ-1 | IC ADC 12BIT 2CHAN I2C 10-MSOP |
| LTC1443IS#TR | IC COMP QUAD LP 1.182VREF 16SOIC |
| LTC1444IS#TRPBF | IC COMP W/REF LOWPWR QUAD 16SOIC |
| LTC1401CS8#PBF | IC A/D CONV 12BIT W/SHTDN 8-SOIC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7321BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 2CHAN 14-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: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 |
| AD7321BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 2CHAN 14TSSOP 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 |
| AD7322 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC |
| AD7322BRU | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC |
| AD7322BRUZ | 功能描述:IC ADC 12BIT+ SAR 2CHAN 14TSSOP 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(fā)布緊急采購，3分鐘左右您將得到回復。