NA2202NBAE2S

Analog Front End (AFE) Overview

The NA2202NBAE2S is a CMOS-based Analog Front End (AFE) from Nisshinbo Micro Devices, featuring a high-precision 16-bit Delta-Sigma ADC. It integrates a dual-stage Programmable Gain Amplifier (PGA) with gains up to 128 V/V and supports bipolar analog supply operation (+/-2.5V). The device operates on a digital supply of 2.7V to 5.5V and an analog supply of 2.7V to 5.5V. Key features include built-in system calibration for offset and gain drift, two matched excitation current sources, and error detection via CRC8 or Check Sum. It communicates via SPI and is housed in a QFN4040-24-NB package.

Analog Front End (AFE) Feature Summary

• 16-bit resolution ADC with no missing codes and data rates from 3.125 to 9.6 ksps.
• Dual PGA configuration providing total gain up to 128 V/V (PGA1: x1-x32, PGA2: x1-x4).
• Built-in 2.048V reference and 1.2288MHz oscillator with 50Hz/60Hz rejection modes.
• Two programmable excitation current sources (0.1mA to 1.0mA) with <1% matching error.

Analog Front End (AFE) Applications

• Temperature controllers
• Pressure sensors
• Flowmeters
• PLC systems
• Digital panel meters

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'NBAE2S' against the manufacturer's order information to confirm the QFN4040-24-NB package, Sn-2Bi plating, and reel quantity of 1,000 pieces. Ensure compatibility with RoHS and halogen-free requirements as specified in the datasheet ordering table.

Analog Front End (AFE) Selection Notes

Select this model for applications requiring 16-bit precision with high gain capabilities. Note that the NA2203 and NA2204 variants offer 20-bit and 24-bit resolutions respectively but share the same package and interface. Consider the low power mode if energy consumption is critical, as it reduces analog current to approximately one-third of normal operation at reduced data rates.

Analog Front End (AFE) Part Context

This component belongs to the NA220x series of Analog Front Ends, which also includes the NA2203 and NA2204 models. These devices are designed for high-precision sensor signal conditioning, integrating amplification, filtering, and conversion into a single CMOS IC. The series supports both unipolar and bipolar analog supply configurations.

Analog Front End (AFE) Replacement Considerations

The NA2203NBAE2S and NA2204NBAE2S are direct pin-compatible alternatives within the same family, offering 20-bit and 24-bit resolution respectively. No other cross-model substitutes are documented in the provided source material.