ADS1262 - 32-Bit 38-kSPS Delta-Sigma ADC | Texas Instruments
MPN: ADS1262 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.19 | $8.19 |
| 10 | $7.37 | $73.70 |
| 100 | $6.55 | $655.00 |
| 500 | $5.9 | $2,950.00 |
| 1,000 | $5.4 | $5,400.00 |
Drop-in alternatives for ADS1262 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADS1263
β Drop-Inβ In Stock
$5.52 / Unit
View Datasheet βADS1262 Maximum Ratings & Electrical Characteristics
| Resolution | 32 bit |
| Maximum Data Rate | 38.4 kSPS |
| Converter Type | Delta-Sigma (delta-sigma) |
| Number of Inputs | 5 differential / 10 single-ended |
| Input Mux Channels | 10 |
| Integrated PGA Gain | 1 to 32 V/V |
| Internal Reference | 2.5 V low-drift bandgap |
| Auxiliary ADC | None (ADS1263 variant includes 24-bit auxiliary ADC) |
| Fault Monitors | Open/shorted sensor detection |
| Interface | SPI |
| Analog Supply | 4.75 V to 5.25 V |
| Digital Supply | 2.7 V to 5.25 V |
| Operating Temperature | -40C to +125C |
| Package | 28-TSSOP |
| Mounting Type | Surface Mount |
| Additional Features | Temperature sensor, GPIOs, 2.5-V reference output |
| RoHS Status | Compliant |
ADS1262 Pin Configuration
| Pin 1 | AVDD β Analog power supply, 4.75 V to 5.25 V |
| Pin 2 | AVSS β Analog ground |
| Pin 6 | AIN0 β Analog input 0 (positive differential) |
| Pin 7 | AIN1 β Analog input 1 |
| Pin 8 | AIN2 β Analog input 2 |
| Pin 9 | AIN3 β Analog input 3 |
| Pin 10 | AIN4 β Analog input 4 |
| Pin 11 | AIN5 β Analog input 5 / GPIO |
| Pin 12 | AIN6 β Analog input 6 / GPIO |
| Pin 13 | AIN7 β Analog input 7 / GPIO |
| Pin 14 | AIN8 β Analog input 8 / GPIO |
| Pin 15 | AIN9 β Analog input 9 / GPIO |
| Pin 17 | REFP0 β Positive reference input |
| Pin 18 | REFN0 β Negative reference input |
| Pin 22 | SCLK β SPI serial clock |
| Pin 23 | DIN β SPI data in |
| Pin 24 | DOUT/DRDY β SPI data out / data ready |
| Pin 25 | CS β SPI chip select |
| Pin 26 | DVDD β Digital power supply, 2.7 V to 5.25 V |
| Pin 27 | DGND β Digital ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADS1262 is suitable for 6 applications: Weigh Scales and Load Cells, RTD and Thermocouple Temperature Measurement, Industrial Process Control Transmitters, Laboratory and Metrology Data Acquisition, Battery Test and Power Monitoring, Medical and Physiological Sensing.
Weigh Scales and Load Cells
The ADS1262 fits weigh-scale front ends because its integrated PGA (gain up to 32) amplifies sub-10-mV full-scale load-cell outputs directly, and the 32-bit delta-sigma core delivers high noise-free resolution for counting and batching accuracy. The low-drift 2.5-V internal reference removes external reference error from the ratiometric bridge budget. Place the ADC near the load cell, enable the internal open/short fault monitors to detect damaged cabling, and use the programmable 50/60-Hz rejection filter modes to suppress mains interference without external notch filters.
Recommended
RTD and Thermocouple Temperature Measurement
For precision temperature measurement, the ADS1262 resolves microvolt-level RTD signals using its gain-32 PGA and low-noise 32-bit modulator, while the on-chip temperature sensor supports thermocouple cold-junction compensation. The internal fault monitors detect open RTD or thermocouple leads, a requirement in industrial transmitters. IDAC-based 3-wire and 4-wire RTD excitation schemes are documented in the TI datasheet typical applications, and the programmable filter can trade 38.4-kSPS speed for sub-uVrms noise in slow temperature loops.
Recommended
Industrial Process Control Transmitters
The ADS1262 serves 4-20 mA and HART-capable transmitter front ends where a one-chip measurement path reduces BOM cost and board area. Its -40C to +125C rating covers field-mounted electronics, the SPI interface connects easily to host MCUs, and GPIOs handle local control functions without extra logic. The delta-sigma filter rejects 50/60-Hz line pickup inherent in long sensor cables, and the internal reference maintains accuracy without periodic external calibration, lowering transmitter lifetime service cost.
Recommended
Laboratory and Metrology Data Acquisition
Bench instruments and calibration systems use the ADS1262 where 32-bit resolution and low drift approach 6.5-digit DMM performance at low cost. The flexible digital filter offers data rates from a few SPS to 38.4 kSPS, letting instruments optimize noise floor per measurement type, and the auxiliary GPIOs plus temperature sensor aid self-diagnostics. Using the differential inputs with the gain-32 PGA measures bridge, thermistor, and voltage-divider sensors without a separate instrumentation amplifier in many cases.
Recommended
Battery Test and Power Monitoring
Precision battery characterization benefits from the ADS1262's 32-bit dynamic range, which captures both microvolt shunt signals and cell voltages on the same 10-input multiplexer. The 38.4-kSPS rate tracks charge/discharge transients, while the low-drift internal reference keeps coulomb-counting consistent over temperature. Low dropout between supplies simplifies single-rail 5-V bench designs, and the SPI interface streams continuous conversion data to host controllers for long-duration logging with no missing samples.
Recommended
Medical and Physiological Sensing
The ADS1262 suits non-diagnostic medical sensing front ends such as pressure transducers and bioimpedance bridges, where its PGA gain range and low noise resolve small differential signals. The internal fault monitors add a hardware layer for lead-off detection, and programmable filter modes suppress power-line interference common in clinical environments. Note that this general-purpose ADC is not specifically certified for medical devices; designers must complete the required system-level qualification independently.
Recommended
Recommended Products Summary
Engineering reference data for ADS1262 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS1263 | ADS1261 | ADS1235 | ADS1256 | ADS1220 |
|---|---|---|---|---|---|---|
| Package | 28-TSSOP | 28-TSSOP - same, pin compatible | TSSOP-24 - different | TSSOP-24 - different | SSOP-28 - different | TSSOP-16 - different |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 32 bit | 32 bit (+24-bit aux) | 32 bit | 24 bit | 24 bit | 24 bit |
| Max Data Rate | 38.4 kSPS | 38.4 kSPS | 10 kSPS | 20 kSPS | 30 kSPS | 2 kSPS |
| PGA Gain Range | 1 to 32 | 1 to 32 | 1 to 128 | 1 to 128 | 1 to 64 | 1 to 128 |
| Internal Reference | Yes, 2.5 V low-drift | Yes, 2.5 V | Yes, 2.5 V | No - external required | No - external required | Yes, 2.048 V |
| Sensor Fault Monitors | Yes | Yes | Yes | Yes | No | Burnout current only |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +125C |
| Drop-in Replacement | N/A | Yes - pin compatible | No - PCB rework | No - PCB rework | No - PCB rework | No - PCB rework |
| Price (1 pc, as of 2026-08-29) | $8.19 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- True one-chip analog front end (vs ADS1256)
- Higher resolution and speed (vs ADS1261)
- Higher temperature rating (vs ADS1256)
Design Notes
Use a low-noise LDO (e.g., 5-V output) for AVDD and keep DVDD on a separate 2.7-5.25 V rail. Place 0.1-uF ceramic decoupling directly at each supply pin plus a 10-uF bulk capacitor. Per the TI ADS126x datasheet, reference stability directly limits accuracy - bypass REFP0/REFN0 with a 10-uF capacitor to ensure stable operation and prevent reference modulation by the PGA.
Partition the board into analog and digital sections with the ADS1262 spanning the boundary. Route SPI traces away from sensor inputs, use a solid ground plane, and star-connect AGND and DGND at the device. Keep differential input traces short, symmetric, and guarded, and place any RC input filters (typically 1 kOhm / 10 nF differential) close to the pins for EMI robustness in industrial environments.
Do not assume every TI precision ADC is a drop-in substitute: TI E2E confirms no pin-compatible 24-bit alternative exists, and ADS1261/ADS1235 use different packages. Also, selecting maximum 38.4-kSPS data rate reduces noise-free resolution substantially - consult the datasheet noise-vs-data-rate tables before committing to a speed/resolution trade-off, and verify command timing on DOUT/DRDY since DRDY is multiplexed with SPI DOUT.
Compliance Information
RoHS compliant per DigiKey/TI product listings. Detailed REACH/halogen status not present in provided data.
