欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號(hào): AD7908BRU-REEL
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
中文描述: 8-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝: MO-153AC, TSSOP-20
文件頁(yè)數(shù): 15/24頁(yè)
文件大小: 607K
代理商: AD7908BRU-REEL
AD7908/AD7918/AD7928
REV. A
Table V. SHADOW Register Bit Functions
MSB
V
IN
0
LSB
V
IN
7
V
IN
1
V
IN
2
V
IN
3
V
IN
4
V
IN
5
V
IN
6
V
IN
7
V
IN
0
V
IN
1
V
IN
2
V
IN
3
V
IN
4
V
IN
5
V
IN
6
------------------SEQUENCE ONE-------------------------------------------------------SEQUENCE TWO-----------------------
POWER-ON
DUMMY CONVERSION
DIN = ALL 1s
DIN: WRITE TO CONTROL REGISTER,
WRITE BIT = 1,
SELECT CODING, RANGE, AND POWER MODE.
SELECT CHANNEL A2–A0 FOR CONVERSION.
SEQ = SHADOW = 0
DOUT: CONVERSION RESULT FROM PREVIOUSLY
SELECTED CHANNEL A2–A0.
DIN: WRITE TO CONTROL REGISTER,
WRITE BIT = 1,
SELECT CODING, RANGE, AND POWER MODE.
SELECT A2–A0 FOR CONVERSION.
SEQ = SHADOW = 0
WRITE BIT = 1,
SEQ = SHADOW = 0
CS
CS
Figure 2. SEQ Bit = 0, SHADOW Bit = 0 Flowchart
SHADOW REGISTER
The SHADOW Register on the AD7908/AD7918/AD7928 is a
16-bit, write-only register. Data is loaded from the DIN pin of
the AD7908/AD7918/AD7928 on the falling edge of SCLK.
The data is transferred on the DIN line at the same time that a
conversion result is read from the part. This requires 16 serial
clock falling edges for the data transfer. The information is
clocked into the SHADOW Register, provided that the SEQ
and SHADOW bits were set to 0,1, respectively, in the previous
write to the Control Register. MSB denotes the first bit in the
data stream. Each bit represents an analog input from Channel
0 to Channel 7. Through programming the SHADOW Register,
two sequences of channels may be selected, through which the
AD7908/AD7918/AD7928 will cycle with each consecutive
conversion after the write to the SHADOW Register. Sequence
One will be performed first and then Sequence Two.
If the user
does not wish to perform a second sequence option, then all 0s
must be written to the last 8 LSBs of the SHADOW Register.
To select a sequence of channels, the associated channel bit
must be set for each analog input. The AD7908/AD7918/
AD7928 will continuously cycle through the selected channels
in ascending order beginning with the lowest channel, until a
write operation occurs (i.e., the WRITE bit is set to 1) with the
SEQ and SHADOW bits configured in any way except 1,0.
(See Table IV.) The bit functions are outlined in Table V.
Figure 2 reflects the traditional operation of a multichannel
ADC, where each serial transfer selects the next channel for
conversion. In this mode of operation the Sequencer function is
not used.
Figure 3 shows how to program the AD7908/AD7918/AD7928
to continuously convert on a particular sequence of channels. To
exit this mode of operation and revert back to the traditional
mode of operation of a multichannel ADC (as outlined in
Figure 2), ensure that the WRITE bit = 1 and the SEQ =
SHADOW = 0 on the next serial transfer. Figure 4 shows how a
sequence of consecutive channels can be converted on without
having to program the SHADOW Register or write to the part
on each serial transfer. Again to exit this mode of operation and
revert back to the traditional mode of operation of a multichannel
ADC (as outlined in Figure 2), ensure the WRITE bit = 1 and
the SEQ = SHADOW = 0 on the next serial transfer.
CS
POWER-ON
DUMMY CONVERSION
DIN = ALL 1s
DIN: WRITE TO CONTROL REGISTER,
WRITE BIT = 1,
SELECT CODING, RANGE, AND POWER MODE.
SELECT CHANNEL A2–A0 FOR CONVERSION.
SEQ = 0 SHADOW = 1
DOUT: CONVERSION RESULT FROM PREVIOUSLY
SELECTED CHANNEL A2–A0.
DIN: WRITE TO SHADOW REGISTER, SELECTING
WHICH CHANNELS TO CONVERT ON; CHANNELS
SELECTED NEED NOT BE CONSECUTIVE CHANNELS
WRITE BIT = 1,
SEQ = 1,
SHADOW = 0
CS
CS
WRITE BIT = 0
WRITE BIT = 1
SEQ = 1 SHADOW = 0
CONTINUOUSLY
CONVERTS ON
THE SELECTED
SEQUENCE OF
CHANNELS
WRITE BIT = 0
WRITE BIT = 0
CONTINUOUSLY
CONVERTS ON THE
SELECTED SEQUENCE
OF CHANNELS BUT WILL
ALLOW RANGE, CODING,
AND SO ON, TO CHANGE
IN THE CONTROL
REGISTER WITHOUT
INTERRUPTING THE
SEQUENCE, PROVIDED
SEQ = 1 SHADOW = 0
Figure 3. SEQ Bit = 0, SHADOW Bit = 1 Flowchart
–15–
相關(guān)PDF資料
PDF描述
AD7908BRU-REEL7 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7918 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7918BRU 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7918BRU-REEL 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
AD7918BRU-REEL7 8-Channel, 1 MSPS, 8-/10-/12-Bit ADCs with Sequencer in 20-Lead TSSOP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7908BRU-REEL7 制造商:Analog Devices 功能描述:ADC Single SAR 1Msps 8-bit Serial 20-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 1MSPS 8BIT SERL 20TSSOP - Tape and Reel
AD7908BRUZ 功能描述:IC ADC 8BIT 8CH 1MSPS 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率(每秒):1M 數(shù)據(jù)接口:串行,SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散(最大):- 電壓電源:模擬和數(shù)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(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)(4x4) 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端,單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6
AD7908BRUZ 制造商:Analog Devices 功能描述:IC 8BIT ADC SMD 7908 TSSOP20
AD7908BRUZ-REEL 功能描述:IC ADC 8BIT 8CH W/SEQ 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率(每秒):15 數(shù)據(jù)接口:MICROWIRE?,串行,SPI? 轉(zhuǎn)換器數(shù)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(pán) 供應(yīng)商設(shè)備封裝:38-QFN(5x7) 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端,雙極;8 個(gè)差分,雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
AD7908BRUZ-REEL7 功能描述:IC ADC 8BIT 8CH W/SEQ 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):16 采樣率(每秒):15 數(shù)據(jù)接口:MICROWIRE?,串行,SPI? 轉(zhuǎn)換器數(shù)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(pán) 供應(yīng)商設(shè)備封裝:38-QFN(5x7) 包裝:帶卷 (TR) 輸入數(shù)目和類型:16 個(gè)單端,雙極;8 個(gè)差分,雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494
主站蜘蛛池模板: 天柱县| 永兴县| 武乡县| 上林县| 和静县| 磴口县| 温宿县| 临夏市| 门源| 道孚县| 平度市| 遵化市| 呈贡县| 登封市| 黎城县| 南丰县| 会宁县| 京山县| 星子县| 宜君县| 桦南县| 仪陇县| 太谷县| 金坛市| 五华县| 岗巴县| 宁强县| 静海县| 昌平区| 郯城县| 杨浦区| 紫云| 唐海县| 琼海市| 利津县| 甘孜| 宣城市| 广宗县| 香格里拉县| 重庆市| 建平县|