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参数资料
| 型号： | ADS1217IPFBR |
| 英文描述： | 8-Channel, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
| 中文描述： | 8通道，24位模拟数字转换器 |
| 文件页数： | 1/28页 |
| 文件大小： | 458K |
| 代理商： | ADS1217IPFBR |
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ADS1217
8-Channel, 24-Bit
ANALOG-TO-DIGITAL CONVERTER
FEATURES
G
24 BITS NO MISSING CODES
G
INL: 0.0012% of FSR (max)
G
FULL-SCALE INPUT:
±
2V
REF
G
PGA FROM 1 TO 128
G
22 BITS EFFECTIVE RESOLUTION
(PGA = 1), 19 BITS (PGA = 128)
G
SINGLE CYCLE SETTLING MODE
G
PROGRAMMABLE DATA OUTPUT RATES
UP TO 1kHz
G
ON-CHIP 1.25V/2.5V REFERENCE
G
ON-CHIP CALIBRATION
G
SPI COMPATIBLE
G
POWER SUPPLY: 2.7V to 5.25V
G
< 1mW POWER CONSUMPTION, V
DD
= 3V
DESCRIPTION
The ADS1217 is a precision, wide dynamic range, delta-
sigma, Analog-to-Digital (A/D) converter with 24-bit resolu-
tion operating from 2.7V to 5.25V supplies. The delta-sigma,
A/D converter provides up to 24 bits of no missing code
performance and effective resolution of 22 bits.
The eight input channels are multiplexed. Internal buffering
can be selected to provide a very high input impedance for
direct connection to transducers or low-level voltage signals.
Burnout current sources are provided that allow for the
detection of an open or shorted sensor. An 8-bit Digital-to-
Analog Converter (DAC) provides an offset correction with a
range of 50% of the FSR (Full-Scale Range).
The PGA (Programmable Gain Amplifier) provides selectable
gains of 1 to 128 with an effective resolution of 19 bits at a gain
of 128. The A/D conversion is accomplished with a 2nd-order,
delta-sigma modulator and programmable sinc filter. The
reference input is differential and can be used for ratiometric
measurements. The onboard current DACs operate indepen-
dently with the maximum current set by an external resistor.
The serial interface is SPI compatible. Eight bits of digital I/O
are also provided that can be used for input or output. The
ADS1217 is designed for high-resolution measurement appli-
cations in smart transmitters, industrial process control, weigh
scales, chromatography, and portable instrumentation.
APPLICATIONS
G
INDUSTRIAL PROCESS CONTROL
G
LIQUID/GAS CHROMATOGRAPHY
G
BLOOD ANALYSIS
G
SMART TRANSMITTERS
G
PORTABLE INSTRUMENTATION
G
WEIGH SCALES
G
PRESSURE TRANSDUCERS
BUF
PGA
+
Voltage
Reference
Clock Generator
Registers
Serial Interface
2nd-Order
Modulator
RAM
Digital I/O
Interface
AGND
AV
DD
R
DAC
V
REFOUT
V
RCAP
V
REF+
V
REF–
X
IN
X
OUT
D7
BUFEN
...
D0
DGND
DV
DD
D
IN
D
OUT
CS
SCLK
POL
DRDY
PDWN
DYSNC
RESET
MUX
A
IN
0
A
IN
1
A
IN
2
A
IN
3
A
IN
4
A
IN
5
A
IN
6
A
IN
7
A
INCOM
IDAC1
Controller
Program-
mable
Digital
Filter
8-Bit
IDAC
IDAC2
8-Bit
IDAC
Offset
DAC
ADS1217
SBAS260B – MAY 2002 – REVISED OCTOBER 2004
www.ti.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 2002-2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
相关PDF资料 |
PDF描述 |
|---|---|
| ADS1217IPFBT | 8-Channel, 24-Bit ANALOG-TO-DIGITAL CONVERTER |
| ADS1225 | 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator |
| ADS1225IRGVR | 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator |
| ADS1225IRGVRG4 | 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator |
| ADS1225IRGVT | 24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADS1217IPFBRG4 | 功能描述:模数转换器 - ADC 8-Ch 24B ADC 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 |
| ADS1217IPFBT | 功能描述:模数转换器 - ADC 8-Ch 24-Bit ADC 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 |
| ADS1217IPFBT | 制造商:Texas Instruments 功能描述:A/D Converter (A-D) IC 制造商:Texas Instruments 功能描述:IC, ADC, 24BIT, 780SPS, TQFP-48 |
| ADS1217IPFBTG4 | 功能描述:模数转换器 - ADC 8-Ch 24-Bit ADC 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 |
| ADS1218 | 制造商:BB 制造商全称:BB 功能描述:8-Channel, 24-Bit ANALOG-TO-DIGITAL CONVERTER with FLASH Memory |
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