D tE t F ADS" />
參數(shù)資料
型號(hào)： ADS7864Y/250
廠商： Texas Instruments
文件頁(yè)數(shù)： 10/27頁(yè)
文件大小： 0K
描述： IC 12BIT 500KHZ 6CH A/D 48-TQFP
產(chǎn)品培訓(xùn)模塊： Data Converter Basics
標(biāo)準(zhǔn)包裝： 1
位數(shù)： 12
采樣率（每秒）： 500k
數(shù)據(jù)接口： 并聯(lián)
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 50mW
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： 標(biāo)準(zhǔn)包裝
輸入數(shù)目和類型： 12 個(gè)單端，雙極；6 個(gè)差分，雙極
產(chǎn)品目錄頁(yè)面： 892 (CN2011-ZH PDF)
配用： 296-30697-ND - EVAL MODULE FOR ADS7864M
其它名稱： ADS7864YDKR
www.ti.com
GETTING DATA
RESET
CLOCK
HOLDA
HOLDB
HOLDC
t
A
t
B
t
C
t
D tE
t
F
ADS7864
SBAS141A – SEPTEMBER 2000 – REVISED MARCH 2005
from channel A0 is read on the first RD signal, then
A1 on the second, followed by B0, B1, C0 and finally
The ADS7864 has three different output modes that
C1 before reading A0 again. Data from channel A0 is
are selected with A2, A1 and A0. A2A1A0 are only
brought to the output first after a reset-signal or after
active when RD and CS are both low. After a reset
powering the part up.
occurs, A2A1A0 are set to 000.
The third mode is a FIFO mode that is addressed
With (A2 A1 A0) = 000 to 101 a particular channel
with (A2 A1 A0 = 111). Data of the channel that is
can directly be addressed (see Table 3 and Fig-
converted first will be read first. So, if a particular
ure 27). The channel address should be set at least
channel is most interesting and is converted more
10ns (see Figure 28, t12) before the falling edge of
frequently (e.g., to get a history of a particular
RD and should not change as long as RD is low.
channel) then there are three output registers per
channel available to store data. When the ADS7864
Table 3. Address/Mode Truth Table
is operated in the FIFO mode, an initial RD/CS is
CHANNEL
necessary (after power up and after reset), so that
SELECTED/
the internal address is set to ‘111’, before the first
MODE
A2
A1
A0
conversion starts.
A0
0
If a read process is just going on (RD signal low) and
A1
0
1
new data has to be stored, then the ADS7864 will
B0
0
1
0
wait until the read process is finished (RD signal
B1
0
1
going high) before the new data gets latched into its
output register.
C0
1
0
C1
1
0
1
At time tA (see Figure 31) the ADS7864 resets. With
Cycle Mode
1
0
the reset signal, all conversions and scheduled con-
versions are cancelled. The data in the output regis-
FIFO Mode
1
ters are also cleared. With a reset, a running conver-
With (A2 A1 A0) = 110 the interface is running in a
sion gets interrupted and all channels go into the
cycle mode (see Figure 29 and Figure 30). Here, data
sample mode again.
Figure 31. Example of Hold Signals
18
相關(guān)PDF資料
PDF描述
VE-24M-MY-B1 CONVERTER MOD DC/DC 10V 50W
VI-26H-IW CONVERTER MOD DC/DC 52V 100W
VE-24L-MY-B1 CONVERTER MOD DC/DC 28V 50W
VE-24J-MY-B1 CONVERTER MOD DC/DC 36V 50W
VI-26H-CV-B1 CONVERTER MOD DC/DC 52V 150W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7864YB 制造商:BB 制造商全稱:BB 功能描述:500kHz, 12-Bit, 6-Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7864YB/250 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 500kHz 12-Bit 6-Ch Simltns Smplng ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7864YB/250G4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 500kHz 12-Bit 6-Ch Simltns Smplng ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7864YB/2K 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 500kHz 12-Bit 6-Ch Simltns Smplng ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS7864YB/2KG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 500kHz 12-Bit 6-Ch Simltns Smplng ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*