AD9215BRU-105

Overview

The AD9215BRU-105 is a monolithic, single-supply, 10-bit analog-to-digital converter operating at sampling rates up to 105 MSPS. It features a wide-bandwidth differential sample-and-hold amplifier and an on-chip voltage reference. The device operates from a single 3 V analog supply (2.7 V to 3.3 V) and a separate digital driver supply (2.25 V to 3.6 V). Power consumption is 120 mW at maximum speed. Key performance metrics include a signal-to-noise ratio of 58 dBc and a spurious-free dynamic range of 77 dBc. It utilizes a multistage differential pipelined architecture with output error correction logic.

Feature Summary

• Multistage differential pipelined architecture with output error correction logic for guaranteed no missing codes
• Wide bandwidth differential sample-and-hold amplifier supporting flexible input configurations
• Integrated clock duty cycle stabilizer to maintain performance across varying clock pulse widths
• On-chip voltage reference and sample-and-hold amplifier reducing external component count

Applications

• Ultrasound equipment
• IF sampling in communications receivers
• Battery-powered instruments
• Hand-held scopemeters
• Low cost digital oscilloscopes

Procurement Notes

Verify the specific suffix 'RU' corresponds to the 28-lead TSSOP package configuration required for your PCB layout. Confirm that the '105' designation matches the maximum conversion rate specification of 105 MSPS for your system timing requirements. Ensure power supply decoupling meets the datasheet recommendations for AVDD and DRVDD pins to maintain specified noise performance.

Selection Notes

Select this component when a low-power, single-supply 10-bit ADC is required for high-speed applications up to 105 MSPS. Consider the 28-lead TSSOP package if surface-mount space is limited. Evaluate the 1 V p-p to 2 V p-p input span options against your signal source amplitude. Check compatibility with the available clock duty cycle stabilizer mode if using non-ideal clock sources.

Part Context

The AD9215BRU-105 belongs to the AD9215 family of low-power, 10-bit analog-to-digital converters manufactured by Analog Devices Inc. This family includes variants optimized for different maximum sampling rates, specifically 65 MSPS and 80 MSPS, alongside the 105 MSPS version. All members share the same pinout and functional block diagram, facilitating design scalability within the product line.

Replacement Considerations

The AD9215BRU-80 and AD9215BRU-65 are pin-compatible alternatives within the same family offering lower maximum sampling rates. These may be suitable if system requirements do not necessitate the full 105 MSPS throughput, potentially allowing for relaxed clocking constraints while maintaining identical interface and power characteristics.