Overview
The ADS1243IPWRG4, produced by Texas Instruments, is a high-precision 24-bit analog-to-digital converter (ADC) designed for applications requiring high resolution and wide dynamic range. This delta-sigma ADC operates from a supply voltage range of 2.7V to 5.25V and features up to eight multiplexed input channels. It is particularly suited for industrial process control, liquid/gas chromatography, blood analysis, smart transmitters, portable instrumentation, and weight scales.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Resolution | 24 | Bits | |||
| Integral Nonlinearity (INL) | ±0.0015% | % of FS | |||
| Programmable Gain Amplifier (PGA) Gain Ranges | 1 | 128 | |||
| Supply Voltage (VDD) | 2.7 | 5.25 | V | ||
| Power Consumption | PGA = 1, Buffer OFF | 240 | 375 | µA | |
| Operating Temperature Range | -40 | 85 | °C | ||
| Storage Temperature Range | -60 | 100 | °C | ||
| Reference Input Range | 0.1 | 2.5 | V | ||
| Simultaneous 50Hz and 60Hz Rejection | -90 | dB |
Key Features
- No Missing Codes: 24-bit resolution with no missing codes.
- Simultaneous 50Hz and 60Hz Rejection: Minimum rejection of -90dB.
- Programmable Gain Amplifier (PGA): Selectable gains from 1 to 128.
- High Input Impedance: Internal buffering for direct connection to transducers or low-level voltage signals.
- Burnout Current Sources: For detecting open or shorted sensors.
- Offset DAC: 8-bit DAC for offset correction.
- On-Chip Calibration: For minimizing errors.
- SPI Compatible Serial Interface: For easy communication.
- Low Power Consumption: Up to 600µW.
- Multiple Input Channels: Up to eight multiplexed input channels.
Applications
- Industrial Process Control: High-resolution measurements in industrial environments.
- Liquid/Gas Chromatography: Precise measurements in analytical instruments.
- Blood Analysis: Accurate measurements in medical diagnostic equipment.
- Smart Transmitters: Enhanced precision in smart transmitter applications.
- Portable Instrumentation: Compact and precise measurements in portable devices.
- Weight Scales: High accuracy in weight measurement applications.
Q & A
- What is the resolution of the ADS1243IPWRG4?
The ADS1243IPWRG4 has a 24-bit resolution with no missing codes.
- What are the gain ranges of the Programmable Gain Amplifier (PGA)?
The PGA has selectable gains from 1 to 128.
- What is the supply voltage range for the ADS1243IPWRG4?
The supply voltage range is from 2.7V to 5.25V.
- How much power does the ADS1243IPWRG4 consume?
The power consumption is up to 600µW.
- What is the operating temperature range of the ADS1243IPWRG4?
The operating temperature range is from -40°C to 85°C.
- Does the ADS1243IPWRG4 have built-in calibration?
Yes, it has on-chip calibration to minimize errors.
- What type of serial interface does the ADS1243IPWRG4 use?
The serial interface is SPI compatible.
- How many input channels does the ADS1243IPWRG4 support?
It supports up to eight multiplexed input channels.
- What is the purpose of the burnout current sources in the ADS1243IPWRG4?
The burnout current sources are used to detect open or shorted sensors.
- What is the rejection level for 50Hz and 60Hz noise?
The rejection level is a minimum of -90dB.
