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參數(shù)資料
型號(hào)： TLV1571IDWRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24
封裝： PLASTIC, SOP-24
文件頁(yè)數(shù)： 31/36頁(yè)
文件大小： 545K
代理商： TLV1571IDWRG4
TLV1571, TLV1578
2.7 V TO 5.5 V, 1-/8-CHANNEL, 10-BIT,
PARALLEL ANALOG-TO-DIGITAL CONVERTERS
SLAS170D –MARCH 1999 – REVISED JULY 2000
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description
_
+
Charge
Redistribution
DAC
SAR
Register
REFM
ADC Code
Control
Logic
Ain
Figure 1. Analog-to-Digital SAR Converter
The TLV1571/78 is a successive-approximation ADC utilizing a charge redistribution DAC. Figure 1 shows a
simplified version of the ADC.
The sampling capacitor acquires the signal on AIN during the sampling period. When the conversion process
starts, the SAR control logic and charge redistribution DAC are used to add and subtract fixed amounts of charge
from the sampling capacitor to bring the comparator into a balanced condition. When the comparator is
balanced, the conversion is complete and the ADC output code is generated.
sampling frequency, fs
The TLV1571/ TLV1578 requires 16 CLKs for each conversion, (assuming the read cycle takes 1 CLK). The
equivalent maximum sampling frequency achievable with a given CLK frequency is:
fs(max) = (1/17) fCLK
The TLV1571 and TLV1578 are software configurable. The first two MSB bits, D(9,8) are used to address which
register to set. The rest of the eight bits are used as control data bits. There are two control registers, CR0 and
CR1, that are user configurable. All of the register bits are written to the control register during write cycles. A
description of the control registers is shown in Figure 2.
相關(guān)PDF資料
PDF描述
TLV1571CDWRG4 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24
TLV1572CD 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLV1572CDRG4 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLV1572ID 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
TLV1572CDG4 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV1571IPW 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10bit 1.2 MSPS PA 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
TLV1571IPWG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 1-Ch 10-Bit 1.25MSPS 8-Ch DSP/SPI 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
TLV1572 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.7 V TO 5.5 V, 10-BIT, 1.25 MSPS SERIAL ANALOG-TO-DIGITAL CONVERTER WITH AUTO-POWERDOWN
TLV1572CD 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10bit A/D 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
TLV1572CDG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 1.25 MSPS 1-Ch DSP 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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