參數(shù)資料
型號： ADS8506I
英文描述： 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
中文描述： 12位40 kSPS的低功耗采樣模擬到數(shù)字轉(zhuǎn)換的內(nèi)部基準(zhǔn)，并行/串行接口
文件頁數(shù)： 11/28頁
文件大?。?/td> 426K
代理商： ADS8506I
www.ti.com
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ADS8506
+5 V
+
+
Convert Pulse
40 ns Min
200
0.1
μ
F
10
μ
F
100
+
2.2
μ
F
66.5 k
+5 V
Parallel Output
B7
B8
B9
B10
B11
(MSB)
B3
Pin 21
LOW
Pin 21
HIGH
B1
B2
NC
(1)
B4
B5
B6
B0
(LSB)
B2
BUSY
R/C
BYTE
±
10 V
2.2
μ
F
SERIAL OUTPUT
Figure 32
shows a basic circuit to operate the ADS8506 with a ±10-V input range and serial output. Taking R/C
(pin 22) LOW for 40 ns (12
μ
s max) will initiate a conversion and output valid data from the previous conversion
on SDATA (pin 19) synchronized to 12 clock pulses output on DATACLK (pin 18). BUSY (pin 24) will go LOW
and stay LOW until the conversion is completed and the serial data has been transmitted. Data will be output in
BTC format, MSB first, and will be valid on both the rising and falling edges of the data clock. BUSY going HIGH
can be used to latch the data. All convert commands will be ignored while BUSY is LOW.
ADS8506
SLAS484A–SEPTEMBER 2007–REVISED OCTOBER 2007
LOW until the conversion is completed and the output register is updated. If BYTE (pin 21) is LOW, the eight
most significant bits (MSBs) will be valid when BUSY rises; if BYTE is HIGH, the four least significant bits (LSBs)
will be valid when BUSY rises. Data will be output in binary 2's complement (BTC) format. BUSY going HIGH
can be used to latch the data. After the first byte has been read, BYTE can be toggled allowing the remaining
byte to be read. All convert commands will be ignored while BUSY is LOW.
The ADS8506 begins tracking the input signal at the end of the conversion. Allowing 25
μ
s between convert
commands assures accurate acquisition of a new signal.
The offset and gain are adjusted internally to allow external trimming with a single supply. The external resistors
compensate for this adjustment and can be left out if the offset and gain will be corrected in software (refer to the
Calibration section).
Figure 31. Basic ±10-V Operation, Both Parallel and Serial Output
The ADS8506 begins tracking the input signal at the end of the conversion. Allowing 25
μ
s between convert
commands assures accurate acquisition of a new signal.
The offset and gain are adjusted internally to allow external trimming with a single supply. The external resistors
compensate for this adjustment and can be left out if the offset and gain are corrected in software (refer to the
Calibration section).
Copyright 2007, Texas Instruments Incorporated
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ADS8506
相關(guān)PDF資料
PDF描述
ADS8506IB 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8506IBDW 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8506IBDWR 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8506IDW 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8506IDWR 12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS8506IB 制造商:BB 制造商全稱:BB 功能描述:12-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE
ADS8506IBDW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 40KSPS 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
ADS8506IBDWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 80KSPS Lo Pwr Int Ref 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
ADS8506IBDWR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 40KSPS 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
ADS8506IBDWRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12B 80KSPS Lo Pwr Int Ref 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
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