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参数资料
| 型号： | TLV1571IPWG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | ADC |
| 英文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| 封装： | GREEN, TSSOP-24 |
| 文件页数： | 28/33页 |
| 文件大小： | 627K |
| 代理商： | TLV1571IPWG4 |
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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.
相关PDF资料 |
PDF描述 |
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| TLV1571CDWG4 | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1578CDARG4 | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO32 |
| TLV1571IDW | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1571CPW | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
| TLV1571IDWR | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TLV1572 | 制造商:TI 制造商全称: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:模数转换器 - ADC 10bit A/D RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| TLV1572CDG4 | 功能描述:模数转换器 - ADC 10-Bit 1.25 MSPS 1-Ch DSP RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| TLV1572CDR | 功能描述:模数转换器 - ADC 10-Bit 1.25 MSPS 1-Ch DSP RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| TLV1572CDRG4 | 功能描述:模数转换器 - ADC 10-Bit 1.25 MSPS 1-Ch DSP RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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