Analog Devices Inc. AD9255BCPZ-80

Overview

AD9255BCPZ-80 from Analog Devices is a 14-bit, 80 MSPS analog-to-digital converter with differential 650 MHz input bandwidth, 1.8 V analog supply operation, and selectable CMOS or LVDS DDR outputs. It features on-chip dither, programmable internal voltage reference, and integer 1-to-8 clock divider-designed for IF sampling in multimode digital receivers including LTE and W-CDMA baseband processing.

For engineers reviewing the AD9255BCPZ-80 datasheet, AD9255BCPZ-80 pinout, AD9255BCPZ-80 application, or AD9255BCPZ-80 equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in communications infrastructure, and confirmed alternative options for system-level ADC selection.

Technical Context

The AD9255BCPZ-80 implements a multistage differential pipelined ADC architecture with integrated error correction logic, guaranteeing 14-bit accuracy and no missing codes across −40°C to +85°C. Its analog front end includes a track-and-hold amplifier optimized for wideband differential inputs up to 300 MHz IF frequencies and supports flexible input spans (1–2 V_p-p) with 200 Ω input impedance.

Digital interface flexibility is achieved via a 3-wire SPI-compatible serial port enabling configuration of output format (offset binary/twos complement/gray), clock duty cycle stabilizer (DCS), power-down modes, and dither control. Output staging supports parallel 14-bit DDR data with either 1.8 V CMOS or ANSI/reduced-swing LVDS signaling.

Key Specifications

Pinout & Package

The AD9255BCPZ-80 is housed in a Pb-free, 48-lead LFCSP (CP-48-9) package with exposed thermal pad requiring solder connection to AGND for proper operation and thermal management.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9255BCPZ-105 and AD9265BCPZ-80, the AD9255BCPZ-80 delivers the lowest power consumption (252 mW) among its family while maintaining 78.9 dBFS SNR and 94 dBc SFDR-making it optimal for thermally constrained, cost-sensitive IF digitizers in 3G/4G infrastructure.

Availability

AD9255BCPZ-80 is available at Aetrix Electronics and suitable for cellular infrastructure, ultrasound equipment, software-defined radio, and broadband test instrumentation requiring stable component supply and long-term industrial temperature support (−40°C to +85°C).

Supply support for AD9255BCPZ-80 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9255 belongs to Analog Devices' high-speed data converter product line, engineered specifically for communications infrastructure applications demanding wideband IF sampling, low power, and flexible digital interfacing in compact LFCSP packages.

FAQ

What is the maximum analog input frequency supported by the AD9255BCPZ-80?

The AD9255BCPZ-80 supports analog input frequencies up to 300 MHz for IF sampling applications. Its differential analog input has a specified small-signal bandwidth of 650 MHz, and AC performance metrics-including 78.3 dBFS SNR and 94 dBc SFDR-are guaranteed at 70 MHz input, with usable performance maintained up to 200 MHz (75.5 dBFS SNR). This makes the AD9255BCPZ-80 suitable for undersampling architectures in LTE and W-CDMA receivers.

Does the AD9255BCPZ-80 support both CMOS and LVDS output interfaces?

Yes, the AD9255BCPZ-80 supports both 1.8 V CMOS and LVDS DDR output modes. LVDS operation includes ANSI-standard and reduced-swing configurations, selectable via the LVDS and LVDS_RS pins or SPI register control. CMOS mode delivers 14-bit parallel data with 1.8 V logic levels and 2.4 ns typical propagation delay; LVDS mode provides differential signaling with 290–400 mV differential output voltage and improved noise immunity for high-speed FPGA interfacing.

What is the purpose of the DITHER pin on the AD9255BCPZ-80?

The DITHER pin on the AD9255BCPZ-80 enables hardware-controlled activation of the on-chip dither function. When asserted high, it injects a small random signal into the ADC's analog path to decorrelate quantization noise-improving SFDR by up to 15 dB at low-input-power conditions (e.g., −23 dBFS). This is especially valuable in communications receivers detecting weak adjacent-channel signals, where spurious-free dynamic range directly impacts receiver sensitivity.

How does the clock duty cycle stabilizer (DCS) function in the AD9255BCPZ-80?

The AD9255BCPZ-80 integrates a clock duty cycle stabilizer (DCS) that actively corrects input clock asymmetry to maintain optimal ADC performance. With DCS enabled, the device tolerates CLK+ and CLK− duty cycles from 40% to 60% without degrading SNR or SFDR. This eliminates the need for external clock conditioning circuits and allows direct use of PLL-derived clocks with inherent duty-cycle variation-reducing system complexity and board space in RF sampling designs.

Is the AD9255BCPZ-80 pin-compatible with other members of the AD9255 family?

Yes, the AD9255BCPZ-80 shares identical pinout and package (48-lead LFCSP, CP-48-9) with AD9255BCPZ-105 and AD9255BCPZ-125. All variants support the same interface signals, power domains, and control pin functions. This allows hardware reuse across sampling rate variants-designers can select the optimal speed grade without modifying PCB layout, simplifying platform scalability and inventory management for multi-tier product families.