ADS7841E

Analog To Digital Converters (ADC) Overview

The ADS7841E is a 12-bit, 4-channel sampling Analog-to-Digital Converter (ADC) manufactured by Texas Instruments. It features a Successive Approximation Register (SAR) architecture with a synchronous serial interface compatible with SPI. The device operates on a single supply voltage ranging from 2.7V to 5.25V and supports a maximum throughput rate of 200kHz. It offers ±2 LSB maximum Integral Nonlinearity (INL) and ±0.8 LSB Differential Nonlinearity (DNL). The input range is defined by an external reference voltage between 100mV and VCC. It is housed in a 16-lead SSOP package and specified for operation over the –40°C to +85°C temperature range.

Analog To Digital Converters (ADC) Feature Summary

• Four-channel analog multiplexer supporting single-ended or differential input configurations
• Low power consumption with dedicated shutdown mode reducing dissipation below 15µW
• Flexible serial interface allowing data formatting optimization for various processors
• Programmable resolution selectable between 8 bits and 12 bits via control byte

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape/reel quantities. Ensure the component grade matches the required operating temperature range, as standard versions are rated for –40°C to +85°C while ES grades extend to +125°C. Confirm RoHS compliance status through official datasheets prior to integration.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7841E when a 12-bit resolution and 200kHz sampling rate are required within a low-power constraint. Choose this part if the application demands a single-supply operation between 2.7V and 5V with an external reference. Consider alternative packages like DIP-16 if through-hole mounting is necessary, or verify pin compatibility with similar family members like the ADS7842 if parallel interfaces are preferred.

Analog To Digital Converters (ADC) Part Context

The ADS7841E belongs to the ADS7841 series of 12-bit, 4-channel ADCs from Texas Instruments. It shares architectural similarities with the ADS834x series but differs in resolution and channel count. The E designation indicates the commercial temperature grade (-40°C to +85°C) and SSOP-16 packaging. It serves as a direct replacement for older components like the MAX1247 in many legacy designs.

Analog To Digital Converters (ADC) Replacement Considerations

The datasheet explicitly lists the MAX1247 as an alternate source. Designers should verify pinout compatibility and electrical specifications before substitution. Other family members such as the ADS7841EB offer tighter linearity specifications but may require different thermal management considerations.