ADS1253EG4

Overview

The ADS1253EG4 is a 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments, belonging to the ADS125x series. It utilizes a delta-sigma architecture with an integrated multiplexer and programmable gain amplifier (PGA). The device supports four differential input channels or eight single-ended inputs. It features a data rate of up to 20 kSPS and communicates via a standard SPI-compatible serial interface. Power supply requirements include a dual-voltage configuration: 2.7 V to 5.25 V for both analog and digital supplies. The component operates within a temperature range of -40°C to +85°C and is housed in a 16-lead SSOP package.

Feature Summary

• Integrates a low-noise PGA and multiplexer to support multiple sensor types without external components.
• Provides high-resolution 24-bit conversion capability suitable for precision measurement applications.
• Features a flexible serial interface compatible with standard microcontroller communication protocols.

Applications

• Industrial process control systems requiring precise signal acquisition.
• Weigh scales and load cell measurement interfaces.
• Medical instrumentation such as ECG and blood pressure monitors.
• High-resolution data acquisition systems for environmental monitoring.

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free termination status according to Texas Instruments documentation. Confirm the package type matches the required PCB footprint, specifically the 16-SSOP variant. Ensure the operating voltage range aligns with the system's power design constraints before finalizing procurement specifications.

Selection Notes

Select this component when high resolution and low noise are prioritized over high-speed sampling rates. Compare against the ADS1254 if additional input channels are required. Verify that the external reference voltage source meets the accuracy requirements for the desired system performance. Consider the power consumption characteristics relative to battery-operated application constraints.

Part Context

The ADS1253EG4 is part of the broader ADS125x family of 24-bit ADCs from Texas Instruments. This family shares common architectural features such as delta-sigma modulation and integrated signal conditioning. The EG4 designation typically denotes a specific packaging and environmental compliance variation within the standard ADS1253 product line, ensuring compatibility with modern manufacturing standards.

Replacement Considerations

The ADS1253E is the non-RoHS equivalent predecessor. For direct pin-compatible replacements with similar specifications, consider the ADS1254E for increased channel count or the ADS1252E for reduced pin count. Verify electrical parameters and package dimensions before substituting any alternative part numbers.