Analog Devices Inc. AD9258BCPZ-80

Overview

AD9258BCPZ-80 from Analog Devices is a dual, 14-bit, 80 MSPS analog-to-digital converter designed for high-performance communications receivers. It features differential analog inputs with 650 MHz bandwidth, 1.8 V analog and digital supply operation, and supports CMOS or LVDS output formats. Its SNR of 77.7 dBFS at 70 MHz enables high-fidelity IF sampling in LTE and W-CDMA baseband processing.

For engineers reviewing the AD9258BCPZ-80 datasheet, AD9258BCPZ-80 pinout, AD9258BCPZ-80 application, or AD9258BCPZ-80 equivalent, key selection considerations include its dual-channel interleaved timing, on-chip dither for SFDR improvement, integer clock divider (1–8), and channel isolation of 95 dB - all critical for diversity radio and software-defined radio architectures requiring precise synchronization and low crosstalk.

Technical Context

The AD9258BCPZ-80 employs a multistage differential pipelined ADC architecture with integrated error correction logic and a duty cycle stabilizer to maintain performance across clock duty cycle variations. Each channel includes wide-bandwidth sample-and-hold amplifiers supporting up to 300 MHz IF sampling frequencies.

It uses a programmable internal voltage reference (1.0 V ±12 mV) and supports flexible analog input ranges (1–2 V_p-p) with differential input impedance of 200 Ω. Digital control is implemented via a 3-wire SPI interface enabling configuration of data formatting, power modes, and BIST functions.

Key Specifications

Pinout & Package

The AD9258BCPZ-80 is housed in a 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, requiring soldering to PCB ground plane for thermal and electrical integrity. Package dimensions are 9 mm × 9 mm × 0.85 mm (CP-64-6).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.

Compared with AD9258BCPZ-105 and AD9268BCPZ-125, the AD9258BCPZ-80 offers optimal balance of power efficiency (462 mW), thermal footprint, and cost for 80 MSPS-class systems - making it ideal for space-constrained, thermally sensitive deployments like remote radio heads and portable SDR platforms.

Availability

AD9258BCPZ-80 is available at Aetrix Electronics and suitable for communications infrastructure, ultrasound equipment, and software-defined radio applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AD9258BCPZ-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 technologies, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD9258 belongs to Analog Devices' high-speed data converter product line, engineered specifically for broadband communications receivers demanding low power, high SNR, and multichannel synchronization in compact form factors.

FAQ

What is the maximum analog input frequency supported by the AD9258BCPZ-80?

The AD9258BCPZ-80 supports analog input frequencies up to 300 MHz, enabled by its proprietary differential input architecture and 650 MHz small-signal analog bandwidth. This capability allows direct sampling of high-IF signals in cellular infrastructure and radar front-ends without intermediate frequency translation stages. The device maintains 77.7 dBFS SNR at 70 MHz and 75.3 dBFS at 200 MHz, confirming usable performance well beyond baseband.

Does the AD9258BCPZ-80 support both CMOS and LVDS output interfaces?

Yes, the AD9258BCPZ-80 supports configurable digital outputs: 14-bit parallel CMOS (1.8 V) or LVDS (ANSI or reduced-swing mode). Output format is selected via SPI register settings and corresponding DRVDD supply configuration. LVDS mode provides lower EMI and better noise immunity for longer trace routing, while CMOS mode reduces power consumption by ~50 mW compared to LVDS at 80 MSPS.

How does the on-chip dither function improve SFDR in the AD9258BCPZ-80?

The AD9258BCPZ-80's optional on-chip dither injects controlled low-level noise into the analog path before quantization, breaking up harmonic correlation and spreading quantization distortion energy across the spectrum. At −23 dBFS input, dither improves SFDR from 89 dBc to 107 dBFS at 2.4 MHz - a 18 dB enhancement - enabling detection of weak signals masked by spurs in spectrum analyzers and cognitive radio receivers.

What is the purpose of the SYNC pin on the AD9258BCPZ-80?

The SYNC pin on the AD9258BCPZ-80 enables multichip synchronization in systems with multiple ADCs, such as MIMO base stations or phased-array radars. When asserted synchronously across devices, it resets internal sampling phases and aligns pipeline delays, achieving sub-nanosecond inter-device skew. This ensures coherent time-aligned sampling across channels without requiring matched-length clock traces.

Can the AD9258BCPZ-80 operate with a single 1.8 V supply?

The AD9258BCPZ-80 requires two separate 1.8 V supplies: AVDD for the analog core and DRVDD for the digital output drivers. While both are nominally 1.8 V, they must be independently decoupled and routed to prevent digital switching noise from degrading analog performance. The datasheet specifies AVDD and DRVDD tolerance as 1.7 V to 1.9 V, with strict separation mandated for SNR >77 dBFS operation.