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參數(shù)資料
| 型號： | ADS1224IPWR |
| 英文描述： | 24-Bit Analog-to-Digital Converter with 4-Channel Differential Input Multiplexer |
| 中文描述： | 24位模擬數(shù)字轉換器的4通道差動輸入多路復用器 |
| 文件頁數(shù)： | 1/23頁 |
| 文件大?。?/td> | 265K |
| 代理商： | ADS1224IPWR |
SBAS286A JUNE 2003 REVISED MARCH 2004
FEATURES
240SPS Data Rate with 4MHz Clock
20-Bit Effective Resolution
Input Multiplexer with Four Differential
Channels
Pin-Selectable, High-Impedance Input Buffer
±
5V Differential Input Range
0.0003% INL (typ), 0.0015% INL (max)
Self-Calibrating
Simple 2-Wire Serial Interface
On-Chip Temperature Sensor
Single Conversions with Standby Mode
Low Current Consumption: 300
μ
A
Analog Supply: 2.7V to 5.5V
Digital Supply: 2.7V to 5.5V
APPLICATIONS
Hand-Held Instrumentation
Portable Medical Equipment
Industrial Process Control
Weigh Scales
DESCRIPTION
The ADS1224 is a 4-channel, 24-bit, delta-sigma ana-
log-to-digital (A/D) converter. It offers excellent perfor-
mance and low power in a TSSOP-20 package. The
ADS1224 is well-suited for demanding, high-resolution
measurements, especially in portable systems and oth-
er space-saving and power-constrained applications.
A delta-sigma modulator and digital filter form the basis
of the A/D converter. The analog modulator has a
±
5V
differential input range. An input multiplexer (mux) is
used to select between four separate differential input
channels. A buffer can be selected to increase the input
impedance of the measurement.
A simple, 2-wire serial interface provides all the
necessary control. Data retrieval, self-calibration, and
Standby mode are handled with a few simple
waveforms. When only single conversions are needed,
the ADS1224 can be quickly shut down (Standby mode)
while idle between measurements to dramatically
reduce the overall power consumption. Multiple
ADS1224s can be connected together to create a
synchronously sampling multichannel measurement
system. The ADS1224 is designed to easily connect to
microcontrollers, such as the MSP430.
The ADS1224 supports 2.7V to 5.5V analog supplies
and 2.7V to 5.5V digital supplies. Power is typically less
than 1mW in 3V operation and less than 1
μ
W during
Standby mode.
Mux
Digital Filter
and
Serial Interface
Σ
Modulator
VREFP VREFN
Buffer
AVDD
DVDD
GND
MUX0
AINP1
AINN1
AINP2
AINN2
AINP3
AINN3
AINP4
AINN4
CLK
DRDY/DOUT
SCLK
TEMPEN
MUX1
BUFEN
www.ti.com
Copyright
20032004, 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.
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| ADS1224IPWRG4 | 功能描述:模數(shù)轉換器 - ADC 24-bit 240SPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS1224IPWT | 功能描述:模數(shù)轉換器 - ADC 24-bit 240SPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS1224IPWTG4 | 功能描述:模數(shù)轉換器 - ADC 24-bit 240SPS RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| ADS1225 | 制造商:AD 制造商全稱:Analog Devices 功能描述:24-Bit Analog-to-Digital Converter with One- and Two-Channel Differential Inputs and Internal Oscillator |
| ADS1225IRGVR | 功能描述:模數(shù)轉換器 - ADC 24-Bit 100SPS ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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