AD9634BCPZ-170

Analog To Digital Converters (ADC) Overview

The AD9634BCPZ-170 is a single-channel, 12-bit analog-to-digital converter (ADC) from Analog Devices Inc., operating at a maximum sampling rate of 170 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 full-scale range of 1.75 V p-p and outputs data via DDR LVDS drivers compliant with ANSI-644 levels. Power consumption is 360 mW at maximum speed, supported by 1.8 V AVDD and DRVDD supplies. Configuration is managed through a 3-wire SPI-compatible serial interface.

Analog To Digital Converters (ADC) Feature Summary

• Integrated duty cycle stabilizer maintains performance despite clock variations
• Flexible analog input range supports user-selectable spans from 1.4 V p-p to 2.0 V p-p
• Fast overrange detection and threshold monitoring capabilities
• Energy-saving standby and power-down modes reduce overall system consumption

Analog To Digital Converters (ADC) Applications

• Multimode digital receivers for 3G cellular infrastructure
• I/Q demodulation systems in software-defined radios
• Smart antenna systems and diversity radio configurations
• Ultrasound medical imaging equipment
• TD-SCDMA, WiMAX, W-CDMA, CDMA2000, GSM, EDGE, and LTE base stations

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific speed grade suffix matches the required conversion rate, as the AD9634 family includes variants rated for 170 MSPS, 210 MSPS, and 250 MSPS. Confirm that the LFCSP-32 package thermal requirements are met by the target PCB layout, specifically ensuring the exposed paddle is soldered to the ground plane for proper operation and heat dissipation within the specified industrial temperature range.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, high-speed ADC with low power consumption is required for communication applications. Ensure the input signal frequency does not exceed the full-power bandwidth limits and that the system can accommodate the 10-cycle pipeline latency. Verify compatibility with the host processor's SPI interface for register configuration and confirm that the LVDS output drivers match the receiving device's input specifications.

Analog To Digital Converters (ADC) Part Context

The AD9634BCPZ-170 belongs to the AD9634 series of 12-bit, 1.8 V analog-to-digital converters designed for cost-effective, small-size, and versatile communications solutions. It shares pin compatibility with the AD9642 and AD6672, facilitating migration paths to different resolution or performance levels. The device is part of Analog Devices' portfolio targeting broadband data applications and multi-standard wireless infrastructure.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9634BCPZ-210 and AD9634BCPZ-250 offer higher sampling rates while maintaining pin compatibility. For 14-bit resolution upgrades, the AD9642 provides a pin-compatible alternative. Designers should verify that the increased speed or resolution of substitute parts aligns with the system's power budget and input bandwidth requirements.