ADS7841PBG4

Analog To Digital Converters (ADC) Overview

The ADS7841PBG4 is a 12-bit, 4-channel serial output sampling analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a Successive Approximation Register (SAR) architecture with an onboard multiplexer supporting single-ended or differential inputs. The device operates on a single supply voltage ranging from 2.7V to 5.25V and supports throughput rates up to 200kHz. It utilizes a synchronous serial interface compatible with standard SPI protocols. Key performance metrics include ±1LSB maximum Integral Nonlinearity (INL) and Differential Nonlinearity (DNL), ensuring no missing codes. Typical power dissipation is 2mW at 200kHz throughput with a +5V supply, reducible to under 15µW in shutdown mode.

Analog To Digital Converters (ADC) Feature Summary

• Integrated four-channel analog multiplexer allowing flexible single-ended or differential input configurations.
• Low-power operation with programmable shutdown modes reducing consumption to under 15µW.
• High accuracy with guaranteed monotonicity and no missing codes across the full operating temperature range.
• Flexible serial interface supporting standard SPI communication for efficient data transfer.

Analog To Digital Converters (ADC) Applications

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

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific package variant when ordering, as the ADS7841 family includes both SSOP-16 and DIP-16 options. Confirm that the required temperature grade matches the application environment, noting that standard grades are specified for -40°C to +85°C while ES grades extend to +125°C. Ensure the external reference voltage and clock signals align with the device's CMOS logic levels and input specifications.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7841PBG4 when a 12-bit resolution with four input channels is required in a low-power form factor. Consider this component for applications where battery life is critical due to its ultra-low power shutdown capability. Verify that the system can provide an external reference voltage within the 100mV to VCC range, as the internal architecture relies on an external VREF for setting the input span.

Analog To Digital Converters (ADC) Part Context

The ADS7841 belongs to a series of low-power, high-speed ADCs designed for battery-operated systems. It is pin-compatible with other variants in the family, such as the ADS7844 (8-channel) and ADS834x (16-bit). The 'PB' suffix typically denotes the DIP-16 package option, distinguishing it from the SSOP-16 'E' or 'EB' variants. This component serves as a direct alternate source for the MAX1247.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS7844 offers 8 channels with identical electrical characteristics and pinout compatibility. For higher resolution requirements, the ADS8341 provides 16-bit performance with 4 channels. The ADS7841ES is available for applications requiring operation up to +125°C instead of the standard +85°C limit.