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參數資料
型號: AD7858AR
廠商: ANALOG DEVICES INC
元件分類: ADC
英文描述: 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
中文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24
封裝: SOIC-24
文件頁數: 25/32頁
文件大小: 315K
代理商: AD7858AR
AD7858/AD7858L
REV. B
–25–
Mode 2 (3-Wire SPI/QSPI Interface Mode)
This is the DEFAULT INTERFACE MODE.
In Figure 33 below we have the timing diagram for interface
Mode 2 which is the SPI/QSPI interface mode. Here the
SYNC
input is active low and may be pulsed or tied permanently low.
If
SYNC
is permanently low, 16 clock pulses must be applied to
the SCLK pin for the part to operate correctly, otherwise with a
pulsed
SYNC
input a continuous SCLK may be applied pro-
vided
SYNC
is low for only 16 SCLK cycles. In Figure 33 the
SYNC
going low disables the three-state on the DOUT pin.
The first falling edge of the SCLK after the
SYNC
going low
clocks out the first leading zero on the DOUT pin. The DOUT
pin is three-stated again a time t
12
after the
SYNC
goes high.
With the DIN pin the data input has to be set up a time t
7
be-
fore the SCLK rising edge as the part samples the input data on
the SCLK rising edge in this case. If resetting the interface is
required, the
SYNC
must be taken high and then low.
t
11
t
12
16
6
5
4
3
2
1
t
10
t
8
t
6
t
9
t
8
t
6
t
3
t
5
THREE-STATE
THREE-STATE
DB0
DB10
DB11
DB12
DB13
DB14
DB15
DB14
DB13
DB12
DB11
DB10
DB0
SYNC
(I/P)
SCLK (I/P)
DOUT (O/P)
DIN (I/P)
POLARITY PIN LOGIC HIGH
t
3
=
0.4
t
SCLK
MIN (NONCONTINUOUS SCLK) 0.4
t
SCLK
ns MIN/MAX (CONTINUOUS SCLK),
t
6
= 75/115ns MAX (5V/3V),
t
7
= 40/60ns MIN (5V/3V),
8
= 20/30ns MIN (5V/3V),
t
= 30/50ns MIN (NONCONTINUOUS SCLK) (5V/3V), (30/50)/0.4
t
SCLK
ns MIN/MAX
(CONTINUOUS SCLK) (5V/3V)
DB15
t
7
Figure 33. SPI/QSPI Mode 2 Timing Diagram for Read/Write Operation
with DIN Input, DOUT Output, and
SYNC
Input
相關PDF資料
PDF描述
AD7858LAN 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LAR 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LBN 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LBR 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858L* 3 V to 5 V Single Supply. 200 kSPS 8-Channel. 12-Bit Sampling ADC
相關代理商/技術參數
參數描述
AD7858AR-REEL 制造商:Analog Devices 功能描述:ADC Single SAR 200ksps 12-bit Serial 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL SAR 200KSPS 12-BIT SERL 24SOIC W - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:SELF CAL.SERIAL 8CH. 12-BIT ADC I.C. - Tape and Reel
AD7858ARZ 功能描述:IC ADC 12BIT 8CH SRL 24-SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 其它有關文件:TSA1204 View All Specifications 標準包裝:1 系列:- 位數:12 采樣率(每秒):20M 數據接口:并聯 轉換器數目:2 功率耗散(最大):155mW 電壓電源:模擬和數字 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TQFP 供應商設備封裝:48-TQFP(7x7) 包裝:Digi-Reel® 輸入數目和類型:4 個單端,單極;2 個差分,單極 產品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7858ARZ-REEL 功能描述:IC ADC 12BIT 8CHAN SRL 24SOIC RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 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
AD7858BN 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858BNZ 功能描述:IC ADC 12BIT 8CHAN SRL 24DIP 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:-
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