參數(shù)資料
型號: THS1215EVM
廠商: Texas Instruments, Inc.
英文描述: THS1215EVM(THS1215評估板)
中文描述: THS1215EVM(THS1215評估板)
文件頁數(shù): 19/30頁
文件大?。?/td> 427K
代理商: THS1215EVM
Analog Output
3-3
Circuit Functionality
3.2.2
External Clock
SMA Connector J4 can be used to input a clock signal to the board from an
external source. If the source is not at the correct dc level for input to the
MM74HC14M hex inverter IC (U12), then it can be ac coupled through C8, with
the dc level trimmed using potentiometer P3 if necessary. The input source
should be 50-
square wave signal with an amplitude of 3.3 V referenced to
digital ground. This is the default setup for the EVM. A summary of the jumper
link settings for the various clock options is shown in Table 3–1.
Table 3–1.Jumper Settings for Clock Options
Clock Options
Internal
Oscillator
External
Oscillator
AC Coupled
External
Oscillator
DC Coupled
LNK44
1-2
2-3
1-2
LNK45
1-2
Removed
2-3
3.3
Analog Output
The ADC digital data is buffered and sent to a THS5671A 14-bit DAC. The
outputs from the DAC are converted from current to voltage and from
differential to single-ended , and made available on SMA connector J9. The
THS5671A DAC latches the THS1215/30 data on the rising edge of DACCLK.
For further information on the THS5671A, refer to the product folder on TI’s
website:
http://focus.ti.com/docs/prod/productfolder.jhtmlgenericPartNumber=THS5671A
3.4
Digital Output
The data outputs from the ADC are buffered using a SN74ALVCH16244
before going to header J5 and feeding back into the DAC. Header J5 is a
standard 40-pin device on a 100-mil grid, and allows easy connection to a logic
analyzer. The outputs are 3.3 V LVTTL compatible. The connector pinout is
listed in Table 3–2.
相關(guān)PDF資料
PDF描述
THS123 HIGH STABILITY MOTOR CONTROL. DIGITAL TACHOMETER. CRANK SHAFT POSITION SENSOR.
THS124 HIGH STABILITY MOTOR CONTROL. DIGITAL TACHOMETER. CRANK SHAFT POSITION SENSOR.
THS125 HIGH STABILITY MOTOR CONTROL. DIGITAL TACHOMETER. CRANK SHAFT POSITION SENSOR.
THS126 HIGH STABILITY MOTOR CONTROL. DIGITAL TACHOMETER. CRANK SHAFT POSITION SENSOR.
THS1403EVM THS1403EVM(THS1403評估板)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
THS1215IDW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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
THS1215IDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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
THS1215IDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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
THS1215IDWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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
THS1215IPW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 15 MSPS w/Low Pwr & exc ENOB 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