Overview
The ADS1240E/1K, produced by Texas Instruments, is a high-precision, 24-bit delta-sigma analog-to-digital (A/D) converter. This device is designed for high-resolution measurement applications and operates from a supply range of 2.7V to 5.25V. It features a wide dynamic range and provides up to 24 bits of no missing code performance, with an effective resolution of 21 bits at a gain of 1 and 19 bits at a gain of 128. The ADS1240E/1K is suitable for various industrial and scientific applications due to its high accuracy and low power consumption of 600µW.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 24 bits | |
| Effective Resolution | 21 bits (PGA = 1), 19 bits (PGA = 128) | |
| Integral Nonlinearity (INL) | 0.0015% of FS | |
| Programmable Gain Amplifier (PGA) Gains | 1 to 128 | |
| Supply Voltage Range | 2.7V to 5.25V | V |
| Power Consumption | 600µW | W |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | SSOP (DB), 24 pins | |
| Input Channels | Up to 8 | |
| Data I/O | Up to 8 bits | |
| Serial Interface | SPI compatible |
Key Features
- 24-bit resolution with no missing codes
- Simultaneous 50Hz and 60Hz rejection (-90dB minimum)
- Programmable Gain Amplifier (PGA) with gains from 1 to 128
- Single-cycle settling
- Programmable data output rates
- External differential reference input (0.1V to 5V)
- On-chip calibration
- SPI compatible serial interface
- Up to eight input channels and eight data I/O
- Burnout current sources for sensor detection
- 8-bit DAC for offset correction
Applications
- Industrial process control
- Weight scales
- Liquid/gas chromatography
- Blood analysis
- Smart transmitters
- Portable instrumentation
Q & A
- What is the resolution of the ADS1240E/1K?
The ADS1240E/1K has a 24-bit resolution with no missing codes.
- What is the effective resolution at different PGA gains?
The effective resolution is 21 bits at a gain of 1 and 19 bits at a gain of 128.
- What is the power consumption of the ADS1240E/1K?
The power consumption is 600µW.
- What is the operating temperature range of the ADS1240E/1K?
The operating temperature range is -40°C to 85°C.
- What type of serial interface does the ADS1240E/1K use?
The serial interface is SPI compatible.
- How many input channels and data I/O does the ADS1240E/1K support?
The device supports up to eight input channels and eight data I/O.
- What is the purpose of the burnout current sources in the ADS1240E/1K?
The burnout current sources allow for the detection of an open or shorted sensor.
- What is the range of the external differential reference input?
The external differential reference input range is 0.1V to 5V.
- Does the ADS1240E/1K support on-chip calibration?
Yes, the device supports on-chip calibration.
- What are some common applications of the ADS1240E/1K?
Common applications include industrial process control, weight scales, liquid/gas chromatography, blood analysis, smart transmitters, and portable instrumentation.
