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Product Detailed Parameters
- Description：IC ADC 12BIT SAR 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Number of Bits：12
- Sampling Rate (Per Second)：20k
- Number of Inputs：1
- Input Type：Differential
- Data Interface：SPI
- Configuration：S/H-ADC
- Ratio - S/H:ADC：1:01
- Number of A/D Converters：1
- Architecture：SAR
- Reference Type：External
- Voltage - Supply, Analog：5V
- Voltage - Supply, Digital：5V
- Features：-
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
- Mounting Type：Through Hole
- Grade：-
- Qualification：-
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Overview
The ADS1286PB is a 12-bit micro-power sampling analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a successive approximation register (SAR) architecture with a differential input and an integrated sample-and-hold amplifier. The device operates on a single supply voltage ranging from 4.5 V to 5.25 V for both analog and digital domains, consuming only 250 µA of supply current. It supports serial interfaces including SPI and I2C, delivering a maximum sampling rate of 20 kS/s. Key performance metrics include a signal-to-noise and distortion ratio (SINAD) of 72 dB, integral nonlinearity (INL) of ±2 LSB, and differential nonlinearity (DNL) of ±0.75 LSB. The component is housed in an 8-pin PDIP package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- Integrates a high-speed SAR ADC core with a dedicated sample-and-hold amplifier for precise differential signal acquisition.
- Achieves ultra-low power consumption of 250 µA, suitable for battery-operated or energy-constrained applications.
- Supports flexible digital communication via standard SPI and I2C interface protocols.
- Delivers consistent linearity performance with specified INL and DNL specifications across the operating temperature range.
Applications
- Portable medical instrumentation requiring low power and high accuracy
- Industrial process control data acquisition systems
- Battery-powered sensor nodes and monitoring devices
Procurement Notes
Verify that the specific part number ADS1286PB corresponds to the 8-pin PDIP package variant when sourcing components. Confirm compatibility with the required 4.5 V to 5.25 V supply rails and ensure the selected interface configuration aligns with the host system's SPI or I2C requirements. Check for moisture sensitivity handling instructions as indicated in the datasheet specifications.
Selection Notes
Select this component when a 12-bit resolution and 20 kS/s sampling rate are sufficient for the application. It is appropriate for designs prioritizing minimal power draw over higher precision or speed. Ensure the external reference voltage meets the stability requirements to maintain the specified SINAD and linearity performance.
Part Context
The ADS1286 belongs to Texas Instruments' family of micro-power ADCs designed for general-purpose data acquisition. This specific model utilizes a CMOS process to achieve low current consumption while maintaining adequate accuracy for many industrial and portable applications. It serves as a cost-effective solution where moderate resolution and speed are balanced against power efficiency constraints.
Replacement Considerations
ADS1286UB: Identical electrical specifications but packaged in SOIC-8 format instead of PDIP-8.
FAQ
What is the maximum sampling rate of the ADS1286PB?
The ADS1286PB supports a maximum sampling rate of 20 kS/s.
Does the ADS1286PB require an external reference voltage?
Yes, the ADS1286PB requires an external reference voltage; it does not contain an internal reference source.
