AD9643BCPZ-170

Analog To Digital Converters (ADC) Overview

The AD9643BCPZ-170 is a dual, 14-bit analog-to-digital converter (ADC) from Analog Devices Inc., featuring a maximum sampling rate of 170 MSPS. It operates on a single 1.8 V supply and utilizes a multistage differential pipelined architecture with integrated output error correction logic. The device provides flexible analog input ranges from 1.4 V p-p to 2.0 V p-p and includes an internal voltage reference. Digital outputs are formatted as LVDS data streams via a parallel interface controlled by a 3-wire SPI port. It supports integer clock division up to 8x, allowing input clock frequencies up to 625 MHz for IF sampling frequencies up to 400 MHz. The component is housed in a 64-lead LFCSP package and is specified over the industrial temperature range of −40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel 14-bit ADC cores with integrated output error correction logic
• Internal voltage reference and ADC clock duty cycle stabilizer
• Flexible power-down modes for energy savings
• User-configurable built-in self-test (BIST) capability

Analog To Digital Converters (ADC) Applications

• Communications systems including TD-SCDMA, WiMax, WCDMA, CDMA2000, GSM, EDGE, and LTE
• Diversity radio systems and smart antenna systems
• 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 AD9643 series includes 170 MSPS, 210 MSPS, and 250 MSPS variants. Confirm that the LFCSP-64 package thermal requirements align with the system design, particularly regarding the exposed paddle connection to the ground plane. Ensure compatibility with the intended clock source and digital interface levels before finalizing procurement.

Analog To Digital Converters (ADC) Selection Notes

Select the AD9643BCPZ-170 when a maximum sampling rate of 170 MSPS is sufficient for the application bandwidth. This variant offers pin compatibility with the AD9613, AD6649, and AD6643, facilitating migration from 12-bit or different speed-grade designs. Consider the 1.8 V supply requirement and LVDS output interface when designing the power and signal routing layers.

Analog To Digital Converters (ADC) Part Context

The AD9643BCPZ-170 belongs to the AD9643 family of high-speed dual ADCs designed for communications applications requiring low cost, small size, and wide bandwidth. The 'BCPZ' suffix indicates the commercial temperature grade and lead-free RoHS-compliant packaging within the 64-lead LFCSP form factor. The '-170' designation specifies the 170 MSPS maximum conversion rate variant within this product line.

Analog To Digital Converters (ADC) Replacement Considerations

The AD9643 is pin-compatible with the AD9613, AD6649, and AD6643. Designers migrating from these parts should verify that the resolution and speed specifications meet the new application requirements.