Overview
The ADS1253E/2K5 from Texas Instruments is a precision, wide dynamic range, delta-sigma Analog-to-Digital (A/D) converter. It operates with a 24-bit resolution and is powered by a single +5V supply. This converter is designed for high-resolution measurement applications, leveraging its delta-sigma architecture to ensure 24 bits of no missing codes performance and an effective resolution of 19 bits up to a 20kHz data rate.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 24 bits | - | - | - |
| Data Rate | - | - | 20 kHz | - |
| Supply Voltage (VDD) | 4.75 | 5 | 5.25 | VDC |
| Quiescent Current | 1.5 | 2 | - | mA |
| Operating Power | 7.5 | 10 | - | mW |
| Power-Down Current | 0.4 | 1 | - | µA |
| Integral Non-Linearity (INL) | - | - | 15 ppm | - |
| Common-Mode Rejection | - | - | 98 dB | - |
| Reference Voltage (VREF) | 0.5 | - | 5 | V |
Key Features
- 24-bit resolution with no missing codes.
- Effective resolution of 19 bits up to 20kHz data rate.
- Low noise: 1.8ppm of rms noise.
- Four differential inputs.
- External reference voltage (0.5V to 5V).
- Power-down mode and sync mode.
- Low power consumption: 8mW at 20kHz and 5mW at 10kHz.
- CMOS logic family with offset binary two’s complement data format.
Applications
The ADS1253E/2K5 is designed for various high-resolution measurement applications, including:
- Cardiac diagnostics
- Smart transmitters
- Industrial process control
- Weight scales
- Chromatography
- Portable instrumentation.
Q & A
- What is the resolution of the ADS1253E/2K5?
The ADS1253E/2K5 has a 24-bit resolution with no missing codes. - What is the maximum data rate of the ADS1253E/2K5?
The maximum data rate is 20kHz. - What is the supply voltage range for the ADS1253E/2K5?
The supply voltage range is from 4.75V to 5.25V. - How much power does the ADS1253E/2K5 consume at 20kHz?
The power consumption at 20kHz is 8mW. - What is the integral non-linearity (INL) of the ADS1253E/2K5?
The INL is up to 15 ppm. - Does the ADS1253E/2K5 have a power-down mode?
Yes, it has a power-down mode. - What type of logic family does the ADS1253E/2K5 use?
The ADS1253E/2K5 uses CMOS logic family. - What is the common-mode rejection ratio of the ADS1253E/2K5?
The common-mode rejection ratio is 98 dB. - What are some typical applications of the ADS1253E/2K5?
Typical applications include cardiac diagnostics, smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation. - What is the reference voltage range for the ADS1253E/2K5?
The reference voltage range is from 0.5V to 5V).
