參數(shù)資料
型號(hào)： ADS8330IRSAR
英文描述： LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
中文描述： 低功耗，16位，1兆赫，單/雙單極性輸入，模擬到數(shù)字串行接口變換器
文件頁(yè)數(shù)： 33/42頁(yè)
文件大小： 1768K
代理商： ADS8330IRSAR
www.ti.com
These SCLKs are optional.
CONFIGURE
READ Result
READ Result
E
E
E
Nth
Nth from #1
Nth from #1
t
d(EOS-CSF)
=
20 ns min
Nth from #1
t
d(CSR-EOS)
=
20 ns min
Nth from #1
t
d(EOS-CSF)
Nth from #1
t
N 1th from #2
Nth from #3
N 1th from #2
Nth from #1
1110............
1101b
1101b
1
16
1
16
1
16
Cascaded Manual Trigger/Read While Sampling
(Use internal CCLK, EOC, and
held low during the N times 16 bits transfer cycle.
CS
polarity programmed as active low)
INT
CONVST #1,
CONVST
CONVST
#2,
#3
EOC #1
(active low)
INT #1
(active low)
CS/FS #3
SCLK #1,
SCLK #2,
SCLK #3
SDO #1,
CDI #2
SDO #2,
CDI #3
SDO #3
SDI #1,
SDI #2,
SDI #3
CS/FS #1
CS/FS #2
SCLK #2,
t
CONV
= 18 CCLKs
t
SAMPLE1
= 3 CCLKs min
t
d(EOS-CSF)
= 20 ns min
=
20 ns min
t
d(CSR-EOS)
= 20 ns min
=
20 ns min
d(CSR-EOS)
ADS8329
ADS8330
SLAS516–DECEMBER 2006
Care must be given to handle the multiple CS signals when the converters are operating in chain mode. The
different chip select signals must be low for the entire data transfer (in this example 48 bits for three converters).
The first 16-bit word after the falling chip select is always the data from the chip that received the chip select
signal.
Case 1: If chip select is not toggled (CS stays low), the next 16 bits are data from the upstream converter, and
so on. This is shown in
Figure 60
. If there is no upstream converter in the chain, as converter #1 in the example,
the same data from the converter is going to be shown repeatedly.
Case 2: If the chip select is toggled during a chain mode data transfer cycle, as illustrated in
Figure 61
, the
same data from the converter is read out again and again in all three discrete 16-bit cycles. This is not a desired
result.
Figure 61. Simplified Cascade Mode Timing with Shared CONVST and Discrete CS
Figure 62
shows a slightly different scenario where CONVST is not shared by the second converter. Converters
#1 and #3 have the same CONVST signal. In this case, converter #2 simply passes previous conversion data
downstream.
33
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相關(guān)PDF資料
PDF描述
ADS8330IRSARG4 LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
ADS8330IRSAT LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
ADS8330IRSATG4 LOW POWER, 16-BIT, 1-MHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
ADS8328IPW LOW POWER, 16-BIT, 500-kHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
ADS8327I LOW POWER, 16-BIT, 500-kHz, SINGLE/DUAL UNIPOLAR INPUT, ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL INTERFACE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8330IRSARG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.7V-5.5V 16 Bit 1 MSPS Serial 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
ADS8330IRSAT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.7V-5.5V 16 Bit 1 MSPS Serial 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
ADS8330IRSATG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2.7V-5.5V 16 Bit 1 MSPS Serial 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
ADS8331 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power, 16-Bit, 500kSPS, 4-/8-Channel Unipolar Input ANALOG-TO-DIGITAL CONVERTERS with Serial Interface
ADS8331_10 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power, 16-Bit, 500kSPS, 4-/8-Channel Unipolar Input ANALOG-TO-DIGITAL CONVERTERS with Serial Interface
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