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參數(shù)資料
| 型號(hào)： | ADS8413IRGZR |
| 英文描述： | 16-BIT, 2-MSPS, LVDS SERIAL INTERFACE, SAR ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 16位，2 MSPS的LVDS串行接口，SAR類比數(shù)位轉(zhuǎn)換器 |
| 文件頁數(shù)： | 15/38頁 |
| 文件大小： | 1197K |
| 代理商： | ADS8413IRGZR |
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MULTIPLE DEVICES IN DAISY CHAIN OR CASCADE
Multiple devices can be connected in either a daisy chain or cascade configuration. The following sections
describes detailed timing diagrams and electrical connections. The ADS8413 provides all of the hand-shake
signals required for both of these modes. CONVST or CSTART is the only external signal needed for operation.
DAISY CHAIN
Device 1
Device 2
SD0
CLK_0
SYNC_0
BUS_BUSY
SD0
CLK_0
SYNC_0
BUS_BUSY
CLK_I/E
LAT_Y/N
LAT_Y/N
CS
CS
SDI
See Table 1
External Clock
(Optional)
See Table 1
CLK_I
SYNC_I
Last_Device
BUS_BUSY
MODE_C/D
CLK_I/E
MODE_C/D
RD
SDI
CLK_I
SYNC_I
RD
+V
+V
To Next Device
or Receiver
From Controller
ADS8413
SLAS490–OCTOBER 2005
Figure 10
shows the first two devices in daisy chain. The signals shown by double lines are LVDS and the others
are CMOS. Daisy chain mode is selected by setting MODE_C/D = 0. The first device in the chain is identified by
selecting LAT_Y/N = 0.
Figure 10. Connecting Multiple Devices in Daisy Chain
For all of the other devices in the chain LAT_Y/N = 1. See
Table 1
for more details on device configurations.
SDO, CLK_O, and SYNC_O of device
n
are to be connected to SDI, CLK_I, and SYNC_I of
the n+1
device.
SDO, CLK_O, and SYNC_O of the last device in the chain go to the receiver. BUS_BUSY of device
n
is
connected to RD of device
n+1
and so on. Finally, BUS_BUSY of the last device in the chain is connected to RD
of device 1. This ensures the necessary handshake to seamlessly propagate the data of all devices through the
chain (it is also allowed to tie RD = 0 for device 1).
TIMING DIAGRAMS FOR DAISY CHAIN OPERATION
The conversion speed for n devices in the chain must be selected such that:
1/conversion speed > read startup delay + n*(data frame duration) + t
d16
Read startup delay = 10 ns + (t
d19
- t
d4
) + t
d12
+ 2/f
CLK
Data frame duration = 16/f
CLK
Note that it is not necessary for all devices in the chain to sample the data simultaneously. But all of the devices
must operate with the same exact conversion speed.
15
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| ADS8413IRGZTG4 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 16-bit Uni Diff In Smp rt 4.75-5.25V 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 |
| ADS8422 | 制造商:BB 制造商全稱:BB 功能描述:16-BIT, 4-MSPS, PSEUDO-BIPOLAR, FULLY DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH PARALLEL INTERFACE, REFERENCE |
| ADS8422EVM | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 DATA CONVERTER RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
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