The Texas Instruments ADS1262IPWR is a high-precision 32-bit delta-sigma (ΔΣ) analog-to-digital converter designed for demanding sensor measurement, industrial automation and precision data-acquisition applications.
The ADS1262 supports programmable data rates from 2.5SPS to 38.4kSPS, allowing designers to optimize measurement speed, noise performance and resolution according to system requirements. TI specifies the device as a 10-channel multiplexed ADC, while the analog front end provides 11 multifunction analog input pins for flexible signal routing.
An integrated low-noise CMOS programmable gain amplifier (PGA) provides gains from 1 to 32, enabling direct measurement of low-level signals from bridge sensors, thermocouples, RTDs and other precision sensors without requiring a large external analog front end.
The converter integrates a precision 2.5V internal voltage reference with a typical temperature drift of only 2ppm/°C. External reference operation is also supported, giving designers additional flexibility when higher system-level ratiometric accuracy is required.
For low-level signal measurement, the ADS1262 provides excellent precision performance, including approximately 1nV/°C offset drift, 0.5ppm/°C gain drift, 3ppm linearity, and noise as low as 7nV RMS at 2.5SPS with gain = 32.
A programmable digital filter provides strong line-frequency rejection. The device supports simultaneous 50Hz and 60Hz interference rejection, with up to approximately 130dB line-cycle rejection under appropriate filter conditions.
The integrated analog front end also includes two programmable sensor-excitation current sources (IDACs), allowing direct excitation of resistive sensors such as RTDs. Eight analog pins can additionally be configured as general-purpose digital inputs or outputs (GPIO).
Internal diagnostic features include fault monitors, an internal temperature sensor, internal ADC test signals and power-supply monitoring, helping designers implement self-diagnostics and improve reliability in industrial measurement systems.
The ADS1262 communicates with a host MCU, DSP or processor through a standard SPI serial interface. Analog supply voltage is specified from 4.75V to 5.25V, while the digital supply supports 2.7V to 5.25V.
The specific ADS1262IPWR ordering code uses a 28-pin TSSOP (PW) surface-mount package. The R suffix indicates large tape-and-reel packaging with a standard quantity of 2,000 pieces per reel.
Key Features
- Manufacturer: Texas Instruments / TI
- Part Number: ADS1262IPWR
- Product Type: Precision Analog-to-Digital Converter
- ADC Architecture: Delta-Sigma / ΔΣ
- Resolution: 32 Bit
- Maximum Data Rate: 38.4kSPS
- Programmable Data Rates: 2.5SPS to 38.4kSPS
- Number of Input Channels: 10
- Multifunction Analog Inputs: 11
- Input Type: Differential / Single-Ended
- Multichannel Architecture: Multiplexed
- Integrated PGA: Yes
- PGA Gain: 1 to 32
- Internal Voltage Reference: 2.5V
- Reference Temperature Drift: 2ppm/°C
- External Reference Support: Yes
- Offset Drift: 1nV/°C
- Gain Drift: 0.5ppm/°C
- Linearity: 3ppm
- Noise: 7nV RMS at 2.5SPS, Gain = 32
- 50Hz / 60Hz Rejection
- Up to 130dB Line-Frequency Rejection
- Single-Cycle Settling Digital Filter
- Dual Sensor Excitation Current Sources
- Internal Temperature Sensor
- Internal Fault Monitoring
- Internal ADC Test Signal
- GPIO: 8
- Digital Interface: SPI
- Analog Supply Voltage: 4.75V to 5.25V
- Digital Supply Voltage: 2.7V to 5.25V
- Typical Power Consumption: 27mW
- Operating Temperature: -40°C to +125°C
- Package: TSSOP-28
- Package Code: PW
- Mounting Type: Surface Mount / SMD
- Packaging: Large Tape & Reel
- Standard Reel Quantity: 2,000 pcs
- RoHS Compliant
- REACH Compliant
- Product Status: Active
Typical Applications
- Factory Automation
- Industrial Process Control
- Precision Data Acquisition
- Weigh Scales
- Load Cells
- Strain Gauge Sensors
- RTD Temperature Measurement
- Thermocouple Measurement
- Pressure Sensors
- Bridge Sensors
- Precision Instrumentation
- Industrial Transmitters
- Test and Measurement Equipment
- Sensor Interface Systems
The ADS1262IPWR is well suited for designs requiring a 32-bit precision ADC with integrated PGA, voltage reference, sensor excitation and high 50/60Hz noise rejection in a single compact device.
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