Overview
The ADS1263IPWR, produced by Texas Instruments, is a high-precision, 32-bit delta-sigma analog-to-digital converter (ADC) designed for demanding sensor applications. This device is part of the ADS126x series, which includes the ADS1262 and ADS1263 models. The ADS1263IPWR integrates a programmable gain amplifier (PGA), an internal voltage reference, and an auxiliary 24-bit delta-sigma ADC for background measurements. It is packaged in a 28-pin TSSOP (PW) package and is fully specified over the –40°C to +125°C temperature range.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 32-bit |
| Sample Rate | 2.5 SPS to 38.4 kSPS |
| Package | TSSOP (PW), 28 pins |
| Operating Temperature Range | –40°C to +125°C |
| PGA Gains | 1 to 32 |
| Auxiliary ADC Resolution | 24-bit |
| 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 |
| 50/60 Hz Rejection | 130 dB |
Key Features
- Precision, 32-bit delta-sigma ADC
- Auxiliary 24-bit delta-sigma ADC for background measurements
- Differential input, CMOS PGA with gains from 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 ADS1263IPWR is designed for high-accuracy sensor applications, including:
- Weigh scales
- Strain-gauge sensors
- Thermocouples
- Resistance temperature devices (RTD)
Q & A
- What is the resolution of the ADS1263IPWR ADC?
The ADS1263IPWR has a 32-bit resolution. - What are the sample rates supported by the ADS1263IPWR?
The sample rates range from 2.5 SPS to 38.4 kSPS. - What type of package does the ADS1263IPWR come in?
The ADS1263IPWR is packaged in a 28-pin TSSOP (PW) package. - What is the operating temperature range of the ADS1263IPWR?
The operating temperature range is –40°C to +125°C. - Does the ADS1263IPWR 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 ADS1263IPWR?
The noise is 7 nV RMS at 2.5 SPS with a gain of 32. - Does the ADS1263IPWR have any built-in fault monitoring?
Yes, it includes internal fault monitors and an ADC test signal. - What types of sensors can the ADS1263IPWR support?
The ADS1263IPWR supports weigh scales, strain-gauge sensors, thermocouples, and resistance temperature devices (RTD). - How many general-purpose inputs/outputs does the ADS1263IPWR have?
The ADS1263IPWR has 8 general-purpose inputs/outputs. - What is the linearity of the ADS1263IPWR?
The linearity is 3 ppm.
