參數(shù)資料
型號： AD7856AN
廠商： ANALOG DEVICES INC
元件分類： ADC
英文描述： 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC
中文描述： 8-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP24
封裝： PLASTIC, DIP-24
文件頁數(shù)： 25/32頁
文件大?。?/td> 294K
代理商： AD7856AN
AD7856
–25–
REV. A
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 permanently tied 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
t
3
= –0.4
t
SCLK
MIN (NONCONTINUOUS SCLK) –/+0.4
t
SCLK
ns MIN/MAX (CONTINUOUS SCLK),
t
6
= 45/75ns MAX (A/K),
t
7
= 30/40ns MIN (A/K),
t
8
= 20ns MIN,
t
11
= 30ns MIN (NONCONTINUOUS SCLK), 30/0.4
t
SCLK
ns MIN/MAX (CONTINUOUS SCLK)
t
11
t
12
16
6
5
4
3
t
10
2
1
t
8
t
6
t
9
t
8
t
6
t
3
t
5
THREE-
STATE
DB0
DB10
DB11
DB12
DB13
DB14
DB15
DB15
DB14
DB13
DB12
DB11
DB10
DB0
SYNC
(I/P)
SCLK (I/P)
DOUT (O/P)
DIN (I/P)
POLARITY PIN LOGIC HIGH
t
7
THREE-
STATE
Figure 33. SPI/QSPI Mode 2 Timing Diagram for Read/Write Operation with DIN Input
DOUT Output and
SYNC
Input
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
, before the
SCLK rising edge as the part samples the input data on the
SCLK rising edge in this case. If resetting the interface is re-
quired, the
SYNC
must be taken high and then low.
相關(guān)PDF資料
PDF描述
AD7856AR 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC
AD7856ARS 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC
AD7856KR 5 V Single Supply, 8-Channel 14-Bit 285 kSPS Sampling ADC
AD7856 8-Channel 14 Bit 285 kSPS Sampling ADC(單電源,8通道14位采樣A/D轉(zhuǎn)換器)
AD7858L 3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC(單電源,200kSPS 8通道12位采樣A/D轉(zhuǎn)換器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7856ANZ 功能描述:IC ADC 14BIT 8CHAN 5V 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 其它有關(guān)文件:TSA1204 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):12 采樣率（每秒）:20M 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:155mW 電壓電源:模擬和數(shù)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(yīng)商設(shè)備封裝:48-TQFP（7x7） 包裝:Digi-Reel® 輸入數(shù)目和類型:4 個單端，單極；2 個差分，單極 產(chǎn)品目錄頁面:1156 (CN2011-ZH PDF) 其它名稱:497-5435-6
AD7856AR 功能描述:IC ADC 14BIT 8CH 5V 24-SOIC RoHS:否 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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極
AD7856AR-REEL 功能描述:IC ADC 14BIT 8CH 5V 24-SOIC RoHS:否 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:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極
AD7856AR-REEL7 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:8 CH. 14-BIT 300 KSPS ADC I.C. - Tape and Reel
AD7856ARS 制造商:Analog Devices 功能描述:ADC Single SAR 285ksps 14-bit Serial 24-Pin SSOP
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