Overview
The ADS1263IPW is a high-precision, 32-bit, delta-sigma analog-to-digital converter (ADC) manufactured by Texas Instruments. This device is part of the ADS126x series, which includes the ADS1262 and ADS1263 models. The ADS1263IPW is designed to provide low-noise, low-drift, and high-accuracy measurement solutions, making it ideal for demanding sensor applications such as weigh scales, strain-gauge sensors, thermocouples, and resistance temperature devices (RTD).
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 32-bit |
| Sampling Rate | 2.5 SPS to 38.4 kSPS |
| Package | TSSOP (PW) with 28 pins |
| Operating Temperature Range | -40°C to 125°C |
| PGA Gains | 1 to 32 |
| Auxiliary ADC | 24-bit ΔΣ ADC |
| Internal Voltage Reference | 2.5 V, temperature drift: 2 ppm/°C |
| Noise | 7 nV RMS (2.5 SPS, gain = 32) |
| Linearity | 3 ppm |
| Offset Drift | 1 nV/°C |
| Gain Drift | 0.5 ppm/°C |
| Line Cycle Interference Rejection | 130 dB (50 Hz and 60 Hz) |
Key Features
- Precision, 32-bit, ΔΣ ADC
- Auxiliary 24-bit, ΔΣ ADC for background measurements
- Differential input, CMOS PGA with gains 1 to 32
- 11 multifunction analog inputs
- High-accuracy architecture with low offset and gain drift
- Internal 2.5-V voltage reference with low temperature drift
- Single-cycle settled conversions
- Dual sensor excitation current sources suitable for direct RTD measurement
- Internal fault monitors and ADC test signal
- 8 general-purpose inputs/outputs
Applications
The ADS1263IPW is designed for a variety of high-accuracy sensor applications, including:
- Weigh scales
- Strain-gauge sensors
- Thermocouples
- Resistance temperature devices (RTD)
Q & A
- What is the resolution of the ADS1263IPW ADC?
The ADS1263IPW has a 32-bit resolution. - What are the sampling rates supported by the ADS1263IPW?
The device supports sampling rates from 2.5 SPS to 38.4 kSPS. - What type of package does the ADS1263IPW come in?
The ADS1263IPW is available in a TSSOP (PW) package with 28 pins. - What is the operating temperature range of the ADS1263IPW?
The operating temperature range is -40°C to 125°C. - Does the ADS1263IPW have an internal voltage reference?
Yes, it has a 2.5-V internal voltage reference with a temperature drift of 2 ppm/°C. - What is the noise performance of the ADS1263IPW?
The noise is 7 nV RMS at 2.5 SPS with a gain of 32. - Does the ADS1263IPW have any line cycle interference rejection features?
Yes, it provides 130 dB rejection of 50 Hz and 60 Hz line cycle interference. - What are the key features of the analog front-end (AFE) of the ADS1263IPW?
The AFE includes a low-noise CMOS PGA, two sensor-excitation current sources, and a programmable digital filter. - Are there any internal fault monitors and test signals in the ADS1263IPW?
Yes, the device includes internal fault monitors and an ADC test signal. - What are the general-purpose inputs/outputs available on the ADS1263IPW?
The device has 8 general-purpose inputs/outputs.
