參數(shù)資料
型號(hào)： ADS7953SBRHBT
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
封裝： GREEN, PLASTIC, PQFP-32
文件頁(yè)數(shù)： 29/63頁(yè)
文件大?。?/td> 1734K
代理商： ADS7953SBRHBT
www.ti.com
SLAS605A – JUNE 2008 – REVISED JANUARY 2010
Table 6. Program Register Settings for Auto-2 Mode
DESCRIPTION
RESET
BITS
LOGIC
STATE
FUNCTION
STATE
DI15-12
NA
1001
Auto-2 program register is selected for programming
DI11-10
NA
Do not care
DI09-06
NA
aaaa
This 4-bit data represents the address of the last channel in the scanning sequence. During device
operation in Auto-2 mode, the channel counter starts at CH-00 and increments every frame until it
equals “aaaa”. The channel counter roles over to CH-00 in the next frame.
DI05-00
NA
Do not care
CONTINUED OPERATION IN A SELECTED MODE
Once a device is programmed to operate in one of the modes, the user may want to continue operating in the
same mode. Mode Control Register settings to continue operating in a selected mode are detailed in Table 7.
Table 7. Continued Operation in a Selected Mode
DESCRIPTION
RESET
BITS
LOGIC
STATE
FUNCTION
STATE
DI15-12
0001
0000
The device continues to operate in the selected mode. In Auto-1 and Auto-2 modes the channel
counter increments normally, whereas in the Manual mode it continues with the last selected
channel. The device ignores data on DI11-DI00 and continues operating as per the previous
settings. This feature is provided so that SDI can be held low when no changes are required in the
Mode Control Register settings.
DI11-00
All '0'
Device ignores these bits when DI15-12 is set to 0000 logic state
PROGRAMMING ALARM THRESHOLDS
There are two Alarm Program Registers per channel, one for setting the high alarm threshold and the other for
setting the low alarm threshold. For ease of programming, two alarm programming registers per channel,
corresponding to four consecutive channels, are assembled into one group (a total eight registers). There are
four such groups for 16 channel devices and 3/2/1 such groups for 12/8/4 channel devices respectively. The
grouping of the various channels for each device in the ADS79XX family is listed in Table 8. The details
regarding programming the alarm thresholds are illustrated in the flowchart in Figure 55. Table 9 lists the details
regarding the Alarm Program Register settings.
Table 8. Grouping of Alarm Program Registers
GROUP NO.
REGISTERS
APPLICABLE FOR DEVICE
0
High and low alarm for channel 0, 1, 2, and 3
ADS7953..50, ADS7957..54, ADS7961..58
1
High and low alarm for channel 4, 5, 6, and 7
ADS7953..51, ADS7957..55, ADS7961..59
2
High and low alarm for channel 8, 9, 10, and 11
ADS7953 and 52, ADS7957 and 56, ADS7961 and 60
3
High and low alarm for channel 12, 13, 14, and 15
ADS7953, ADS7957, ADS7961
Each alarm group requires 9 CS frames for programming their respective alarm thresholds. In the first frame the
device enters the programming sequence and in each subsequent frame it programs one of the registers from
the group. The device offers a feature to program less than eight registers in one programming sequence. The
device exits the alarm threshold programming sequence in the next frame after it encounters the first ‘Exit Alarm
Program’ bit high.
Copyright 2008–2010, Texas Instruments Incorporated
35
相關(guān)PDF資料
PDF描述
ADS7953SRHBT 16-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQCC32
ADS803E 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28
ADS8342IBPFBTG4 4-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
ADS8412IPFBTG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
ADS8412IBPFBTG4 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7953SDBT 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 1MSPS 16Ch Sgl ended micro Pwr 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
ADS7953SDBTG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 1MSPS 12Ch sr i/f SAR 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
ADS7953SDBTR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 1MSPS 16Ch Sgl ended micro Pwr 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
ADS7953SDBTRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 1MSPS 12Ch sr i/f SAR 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
ADS7953SRHBR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 1MSPS 16Ch Sgl End MicroPwr SAR 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

*
*
*