AD9642BCPZRL7-210

Analog To Digital Converters (ADC) Overview

The AD9642BCPZRL7-210 is a single-channel, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 210 MSPS. It utilizes a multistage differential pipelined architecture with integrated output error correction logic and an internal voltage reference. The device accepts differential analog inputs with a nominal span of 1.75 V p-p and provides 14-bit digital data via DDR LVDS outputs compliant with ANSI-644 levels. Powered by a single 1.8 V supply for both analog and digital sections, it consumes 371 mW at full speed. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 71.5 dBFS at 185 MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 95 dBc under the same conditions. The component is housed in a 32-lead LFCSP package and supports operation across the industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Multistage differential pipelined ADC core with integrated output error correction logic
• Flexible analog input range supporting user-selectable spans from 1.4 V p-p to 2.0 V p-p
• Integrated duty cycle stabilizer (DCS) to maintain performance despite clock variations
• 3-wire SPI-compatible serial interface for register programming and readback

Analog To Digital Converters (ADC) Applications

• Communications infrastructure including TD-SCDMA, WiMAX, WCDMA, CDMA2000, GSM, EDGE, and LTE
• Diversity radio systems and smart antenna configurations
• I/Q demodulation systems and general-purpose software radios
• Ultrasound equipment and broadband data applications

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix matches the required conversion rate, as the AD9642 family includes 170, 210, and 250 MSPS variants. Confirm the RL7 suffix indicates reel packaging if tape-and-reel handling is necessary for assembly. Ensure the ordering part number aligns with the intended industrial temperature range and that all regulatory compliance requirements are met for the target deployment region.

Analog To Digital Converters (ADC) Selection Notes

Select this variant when a 210 MSPS sampling rate is sufficient for the application bandwidth, offering a balance between performance and power consumption compared to the 250 MSPS version. Consider the pin compatibility with the AD9634 if migration from a 12-bit architecture is planned. Evaluate the need for the integer 1-to-8 input clock divider if the system clock exceeds the maximum input frequency limit of 625 MHz.

Analog To Digital Converters (ADC) Part Context

The AD9642 belongs to a family of high-speed, low-power 14-bit ADCs designed for communications applications requiring small size and wide bandwidth. It shares architectural similarities with other devices in the series but is distinguished by its specific speed grades and single-channel configuration. The device is often paired with evaluation boards like the AD9642-250EBZ for design verification and development purposes.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9642 is pin-compatible with the AD9634, allowing for migration between 14-bit and 12-bit resolutions within the same footprint. Designers should verify that any substitute component maintains compatible LVDS output levels and SPI interface timing requirements to ensure seamless integration without PCB redesign.