ADS1209SPW

Analog To Digital Converters (ADC) Overview

The ADS1209SPW is a dual-channel, 16-bit analog-to-digital converter from Texas Instruments. It utilizes a second-order delta-sigma modulation architecture to achieve high precision with a sampling rate of 40 kS/s per channel. The device operates on a single 5 V supply for both analog and digital domains, consuming approximately 65.5 mW of power. Key electrical specifications include a signal-to-noise ratio of 90 dB, an effective number of bits of 14, and differential nonlinearity within +/- 1 LSB. It features an internal oscillator and supports external or internal reference voltages, typically 2.5 V. The component is housed in a TSSOP-24 package and functions over an industrial temperature range of -40°C to +105°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel differential input capability for simultaneous signal acquisition
• Integrated second-order sigma-delta modulator for high-resolution conversion
• Built-in oscillator eliminates the need for external clock components
• Flexible reference configuration supporting both internal and external sources

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring precise sensor data acquisition
• Medical instrumentation such as electrocardiogram (ECG) monitoring devices
• High-resolution weighing scales and load cell interfaces
• Data acquisition modules for environmental monitoring stations

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm the package type and tube packaging format. Ensure compatibility with the target system's voltage levels and communication protocol requirements before procurement. Check for moisture sensitivity level compliance if storage conditions are critical. Confirm that the supplier provides genuine Texas Instruments products to avoid counterfeit risks.

Analog To Digital Converters (ADC) Selection Notes

Select this component when dual-channel, 16-bit resolution is required at moderate speeds up to 40 kS/s. It is suitable for applications demanding low noise and high linearity without complex external filtering. Consider the TSSOP-24 package constraints for PCB layout. Evaluate power consumption against system battery life requirements if applicable.

Analog To Digital Converters (ADC) Part Context

The ADS1209 belongs to the ADS1209 series of precision ADCs designed for low-power, high-performance applications. It shares architectural similarities with other devices in the family but offers specific channel count and resolution combinations. The SPW suffix denotes the TSSOP-24 plastic small-outline package variant, distinguishing it from other form factors available in the product line.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes may include other dual-channel 16-bit sigma-delta ADCs from Texas Instruments or Analog Devices. Verify pin compatibility and register mapping if replacing within existing designs. Ensure equivalent performance metrics such as SNR, sampling rate, and operating voltage range are maintained.