Analog Devices Inc. AD9255BCPZ-105

Overview

AD9255BCPZ-105 from Analog Devices is a 14-bit, 105 MSPS analog-to-digital converter with differential 650 MHz input bandwidth, 1.8 V analog supply operation, and selectable CMOS or LVDS DDR outputs-designed for IF sampling in multimode digital receivers including LTE and W-CDMA base stations.

For engineers reviewing the AD9255BCPZ-105 datasheet, AD9255BCPZ-105 pinout, AD9255BCPZ-105 application, or AD9255BCPZ-105 equivalent, this page delivers verified specs, validated pin functions, confirmed package mapping to 48-lead LFCSP, and two rigorously cross-checked alternative ADCs for communications-grade sampling systems.

Technical Context

The AD9255BCPZ-105 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. It supports integer 1-to-8 clock division and features a duty cycle stabilizer (DCS) to maintain performance over wide input clock duty cycle variation.

Analog input interface includes programmable 1 V_p-p to 2 V_p-p range, on-chip dither for SFDR enhancement, and internal voltage reference with ±12 mV output error. Digital control uses a 3-wire SPI interface supporting offset binary, twos complement, or gray coding formats.

Key Specifications

Pinout & Package

AD9255BCPZ-105 is housed in a Pb-free, 48-lead LFCSP (CP-48-9) with exposed thermal pad requiring solder connection to AGND for proper analog grounding and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9257BCPZ-105 and ADS5463IPFP, AD9255BCPZ-105 uniquely balances 14-bit resolution, 105 MSPS speed, 1.8 V operation, and integrated DCS/dither-making it the most suitable choice for thermally constrained, single-channel IF sampling in LTE/W-CDMA infrastructure where SNR stability and power efficiency are prioritized.

Availability

AD9255BCPZ-105 is available at Aetrix Electronics and suitable for LTE base station receivers, ultrasound beamformers, and software-defined radio platforms requiring stable component supply, long-term lifecycle support, and guaranteed Pb-free compliance.

Supply support for AD9255BCPZ-105 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, headquartered in Norwood, MA, with R&D and manufacturing operations spanning 15+ countries.

The AD9255BCPZ-105 belongs to Analog Devices' high-speed ADC product line, engineered specifically for communications infrastructure demanding low power, high SNR, and robust IF sampling capability in compact form factors.

FAQ

What is the maximum analog input frequency supported by the AD9255BCPZ-105?

The AD9255BCPZ-105 supports analog input frequencies up to 300 MHz using IF sampling techniques, enabled by its 650 MHz small-signal analog input bandwidth and 105 MSPS sampling rate. Performance metrics such as SNR and SFDR are specified up to 200 MHz, with validated operation confirmed at 300 MHz per Analog Devices' application guidance for undersampling architectures.

Does the AD9255BCPZ-105 require an external voltage reference?

No, the AD9255BCPZ-105 includes a programmable internal voltage reference with 1.0 V nominal output and ±12 mV error over temperature. External reference operation is optional and enabled via SENSE and RBIAS pins-used only when higher precision or custom reference voltage is needed for calibration-critical applications.

Can the AD9255BCPZ-105 operate with a non-50% duty cycle clock input?

Yes, the AD9255BCPZ-105 incorporates a dedicated duty cycle stabilizer (DCS) that actively corrects input clock asymmetry. This allows reliable operation with clock duty cycles ranging from 30% to 70%, preserving aperture jitter at ≤0.07 ps rms and maintaining full 14-bit performance without external clock conditioning circuitry.

What is the pipeline latency of the AD9255BCPZ-105 in LVDS DDR mode?

The AD9255BCPZ-105 exhibits a fixed pipeline latency of 12.5 conversion cycles in LVDS DDR output mode. This value is constant across all operating conditions and is critical for deterministic timing alignment in synchronous digital receivers-enabling precise phase matching between multiple ADC channels in array-based systems.

How does the on-chip dither function improve SFDR in the AD9255BCPZ-105?

The on-chip dither in the AD9255BCPZ-105 injects a controlled low-level noise signal into the ADC core, randomizing quantization distortion harmonics. At −23 dBFS input, this raises SFDR from 89 dBc to 109 dBc at 70 MHz-directly enhancing weak-signal detectability in crowded spectral environments like multi-carrier LTE base stations.