AD4005BRMZ

Analog To Digital Converters (ADC) Overview

The AD4005BRMZ is a 16-bit, 1 MSPS precision successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates from a single 1.8 V analog supply and accepts digital logic voltages between 1.71 V and 5.5 V via the VIO pin. The device features differential analog inputs with a range of ±VREF, where VREF spans 2.4 V to 5.1 V. Key performance metrics include a maximum integral nonlinearity (INL) of ±0.4 LSB, a signal-to-noise ratio (SNR) of 96.2 dB at 1 kHz input frequency with a 5 V reference, and a spurious-free dynamic range (SFDR) of 122 dB. Total power dissipation is 12.3 mW at 1 MSPS with high-Z mode enabled.

Analog To Digital Converters (ADC) Feature Summary

• Easy Drive architecture reduces input kickback and current to 0.5 μA/MSPS, eliminating the need for dedicated driver amplifiers.
• Input span compression allows operation with single-supply drivers while maintaining full ADC code range access.
• SPI/QSPI/MICROWIRE/DSP-compatible serial interface supports daisy-chaining multiple devices and includes an optional busy indicator.
• Integrated input overvoltage clamp protection sinks up to 50 mA to protect against input excursions.

Analog To Digital Converters (ADC) Applications

• Automated test equipment
• Machine automation systems
• Medical equipment
• Battery-powered instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific package variant upon ordering, as the AD4005 series is available in both 10-lead MSOP and 3 mm × 3 mm LFCSP packages. Confirm that the required throughput matches the AD4005's 1 MSPS specification, distinct from the 2 MSPS AD4001. Ensure voltage references and logic levels align with the specified operating ranges before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the AD4005BRMZ when a 1 MSPS sampling rate suffices for the application, offering lower power consumption compared to the 2 MSPS AD4001. Choose this component for designs requiring Easy Drive capabilities to simplify front-end amplifier selection. Ensure the external reference voltage falls within the 2.4 V to 5.1 V range and that the host logic interface is compatible with the 1.71 V to 5.5 V VIO supply range.

Analog To Digital Converters (ADC) Part Context

The AD4005BRMZ belongs to the AD4001/AD4005 family of 16-bit precision SAR ADCs. It shares architectural similarities with the AD4003, AD4007, and AD4011 families, including pin compatibility in certain packages. The primary distinction within the AD400x series is the throughput speed; the AD4005 provides 1 MSPS, whereas the AD4001 provides 2 MSPS, with identical resolution and accuracy specifications.

Analog To Digital Converters (ADC) Replacement Considerations

The AD4001BRMZ serves as a higher-speed alternative within the same family, offering 2 MSPS throughput. For applications requiring 18-bit resolution, the AD4003BRMZ is a compatible pin-out option but differs in architecture and speed. Verify package type (MSOP vs. LFCSP) when substituting, as physical dimensions vary between variants.