ADS7842EG4

Analog To Digital Converters (ADC) Overview

The ADS7842EG4 is a 12-bit, 4-channel analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a successive approximation register (SAR) architecture with parallel output sampling capabilities. The device supports a sampling rate of up to 200 kS/s and operates on a single supply voltage ranging from 2.7 V to 5.25 V for both analog and digital domains. Key performance metrics include a differential nonlinearity (DNL) of +/- 0.8 LSB and an integral nonlinearity (INL) of +/- 1 LSB. The SINAD is specified at 72 dB. Power consumption is typically 1.8 mW at full speed. It is housed in a 28-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Parallel output interface enables high-speed data transfer without serial clock overhead.
• Single-supply operation simplifies power management in portable systems.
• Integrated sample-and-hold amplifier ensures accurate signal acquisition.

Analog To Digital Converters (ADC) Applications

• Portable multi-channel data loggers
• Industrial process control systems
• Battery-powered measurement equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the package type is 28-SSOP. Check for moisture sensitivity level requirements during storage and handling. Ensure the source document matches the exact part number ADS7842EG4 to avoid confusion with the standard ADS7842E or other variants in the series.

Analog To Digital Converters (ADC) Selection Notes

Select this component when parallel data throughput is required over serial interfaces. It is suitable for applications needing 4 channels of 12-bit resolution at speeds up to 200 kSPS. Consider the external reference voltage requirement and the need for an external clock source. Compare against ADS7841 if serial output is acceptable to reduce pin count.

Analog To Digital Converters (ADC) Part Context

The ADS7842EG4 belongs to the ADS784x family of 12-bit ADCs from Texas Instruments. This family includes variants with serial outputs like the ADS7841 and ADS7844. The EG4 designation specifically denotes the green (RoHS compliant, no Sb/Br) version of the ADS7842E in a 28-SSOP package. It shares architectural similarities with the ADS7852 but differs in channel count and interface type.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7842E is the non-RoHS equivalent. ADS7841EG4 offers similar performance but with a serial SPI interface instead of parallel. ADS7844EG4 provides 8 channels with serial output. Verify pin compatibility and software interface changes when substituting.