AD9215BRU-65

Overview

The AD9215BRU-65 is a monolithic, single 3 V supply, 10-bit analog-to-digital converter (ADC) operating at a maximum sampling rate of 65 MSPS. It utilizes a multistage differential pipelined architecture with output error correction logic to guarantee no missing codes over the full industrial temperature range of −40°C to +85°C. The device features a high-performance sample-and-hold amplifier (SHA) and an on-chip voltage reference. It operates from a single AVDD supply of 2.7 V to 3.3 V and a separate DRVDD supply of 2.25 V to 3.6 V. At 65 MSPS, the ADC core consumes 96 mW. The component is housed in a 28-lead TSSOP surface-mount package.

Feature Summary

• Multistage differential pipelined architecture with output error correction logic for guaranteed 10-bit accuracy without missing codes.
• Integrated high-performance sample-and-hold amplifier (SHA) and voltage reference supporting flexible analog input ranges.
• Single-ended clock input with a duty cycle stabilizer to maintain performance across wide variations in clock pulse widths.
• Separate digital output driver supply to accommodate different logic families while maintaining low power consumption.

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 plastic package configuration. Confirm that the '-65' designation aligns with the required 65 MSPS maximum conversion rate specification. Ensure compatibility with the specified 2.7 V to 3.3 V analog supply and 2.25 V to 3.6 V digital supply voltages for the target application environment.

Selection Notes

Select this component when a 10-bit resolution and 65 MSPS throughput are sufficient for the system requirements. Consider the internal reference and SHA capabilities if external components must be minimized. Evaluate the power consumption of 96 mW against thermal constraints. Verify that the parallel data interface and single-ended clock input fit the existing digital design architecture.

Part Context

The AD9215BRU-65 belongs to the AD9215 family of 10-bit, 65/80/105 MSPS ADCs. It shares architectural similarities with higher-speed variants like the AD9215BRU-80 and AD9215BRU-105, as well as other pin-compatible devices in the Analog Devices portfolio. This family allows for simplified upgrades in systems requiring varying speed or resolution levels within the same form factor.

Replacement Considerations

The AD9215BCP-65 serves as a pin-compatible alternative utilizing a 32-lead LFCSP package instead of the TSSOP format. Other members of the AD9215 family, such as the AD9215BRU-80 and AD9215BRU-105, offer higher sampling rates but may require adjustments to clocking and power management designs.

FAQ

How does the AD9215 handle clock duty cycle variations?

The device includes a patented clock duty cycle stabilizer that compensates for wide variations in clock pulse widths, ensuring excellent performance is maintained regardless of the input clock duty cycle.

What is the function of the OR output bit?

The Out-of-Range (OR) indicator signals when the analog input signal exceeds the selected input range. This bit can be used in conjunction with the Most Significant Bit (MSB) to determine whether the overflow condition is a low or high saturation event.

Can the AD9215 operate with single-ended inputs?

Yes, the wide bandwidth, truly differential sample-and-hold amplifier allows for user-selectable input ranges and offsets, including configurations for single-ended applications.