ADS9218RHAR

Analog To Digital Converters (ADC) Overview

The ADS9218RHAR is a dual-channel, simultaneous-sampling, 18-bit SAR ADC with an integrated driver. It operates at a throughput of 10MSPS per channel with a power consumption of 146mW per channel. The device features a 90MHz analog input bandwidth and supports serial LVDS (SLVDS) interfaces in SDR and DDR modes. Key electrical specifications include ±0.75LSB DNL, ±1LSB INL, and a typical SNR of 95.5dBFS. It utilizes a 5V analog supply (AVDD_5V) and a 1.8V digital supply (VDD_1V8). The component is housed in a 40-pin VQFN package measuring 6mm x 6mm.

Analog To Digital Converters (ADC) Feature Summary

• Integrated precision reference and common-mode voltage output buffer eliminate external components.
• Serial LVDS interface minimizes digital switching noise while enabling high-speed data communication.
• Internal averaging filter supports oversampling for enhanced dynamic performance.

Analog To Digital Converters (ADC) Applications

• Power analyzers
• Source measurement units (SMU)
• Marine equipment
• Servo drive position feedback

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix RHAR to confirm the VQFN-40 package and tape-and-reel shipping configuration. Ensure the procurement documentation matches the manufacturer's part number ADS9218RHAR exactly. Confirm that the received components are production-grade devices rather than pre-release samples requiring initialization sequences.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS9218RHAR when 18-bit resolution and 10MSPS throughput are required. Choose this model over the ADS9219 if lower power consumption is prioritized over higher speed. Consider the ADS9217 only if a reduced 5MSPS rate is sufficient for the application. Verify compatibility with the SLVDS interface requirements of the host system.

Analog To Digital Converters (ADC) Part Context

The ADS9218RHAR belongs to the ADS921x family, which includes the ADS9217 and ADS9219. These devices share identical pinouts and functional blocks but differ in sampling rates and power consumption. The RHA suffix denotes the 40-pin VQFN package. This family is designed for high-performance data acquisition systems requiring simultaneous sampling of two channels.

Analog To Digital Converters (ADC) Replacement Considerations

ADS9218RHR: Same function in a different VQFN-56 package. ADS9217RHAR: Lower speed (5MSPS) version. ADS9219RHAR: Higher speed (20MSPS) version. All variants share the same pinout and register map.