AD9642BCPZRL7-170

Analog To Digital Converters (ADC) Overview

The AD9642BCPZRL7-170 is a 14-bit, single-channel 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. Powered by a single 1.8 V supply for both analog and digital sections, it features a 3-wire SPI interface for configuration. The component is housed in a 32-lead LFCSP package and operates within an 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
• Integer 1-to-8 input clock divider allowing compatibility with high-frequency clocks up to 625 MHz

Analog To Digital Converters (ADC) Applications

• Multimode digital receivers for 3G cellular infrastructure including TD-SCDMA, WCDMA, CDMA2000, GSM, EDGE, and LTE
• I/Q demodulation systems and smart antenna configurations
• Diversity radio 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 tape-and-reel packaging if automated placement is required. Ensure the ordering code corresponds to the industrial temperature range specification. Cross-reference the datasheet revision to confirm pinout and electrical characteristics remain consistent with current design requirements.

Analog To Digital Converters (ADC) Selection Notes

Select this variant when a 170 MSPS sampling rate satisfies the Nyquist requirement for the target signal bandwidth while optimizing power consumption compared to higher-speed grades. The device supports migration from 12-bit architectures like the AD9634 due to pin compatibility. Consider the internal reference and DCS features to simplify external clock conditioning and bias circuitry designs.

Analog To Digital Converters (ADC) Part Context

The AD9642 belongs to a family of high-performance, low-cost 14-bit ADCs designed for communications infrastructure. It shares architectural similarities with the dual-channel AD9648 but offers a compact 32-lead LFCSP form factor. The series targets applications requiring wide bandwidth and versatility, serving as a bridge between lower-resolution converters and more complex multi-channel solutions.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9634 serves as a pin-compatible 12-bit alternative for migration purposes. The AD9648 provides dual-channel functionality with a 64-lead package. Verify that any substitute maintains the required 1.8 V supply operation and LVDS output compatibility.