Analog Devices Inc. AD9259ABCPZ-50

Overview

AD9259ABCPZ-50 from Analog Devices is a quad-channel, 14-bit, 50 MSPS serial LVDS analog-to-digital converter operating from a single 1.8 V supply, delivering 73 dB SNR and 84 dBc SFDR at Nyquist, with 315 MHz full-power analog bandwidth and on-chip sample-and-hold-designed for medical ultrasound beamforming and quadrature radio receivers.

For engineers reviewing the AD9259ABCPZ-50 datasheet, AD9259ABCPZ-50 pinout, AD9259ABCPZ-50 application, or AD9259ABCPZ-50 equivalent, key selection considerations include serial LVDS output compliance (ANSI-644), per-channel power-down capability (<2 mW), programmable clock/data alignment, built-in digital test pattern generation, and RoHS-compliant 48-lead LFCSP packaging.

Technical Context

The AD9259ABCPZ-50 implements a pipelined ADC architecture with a 4-bit first stage, eight 1.5-bit stages, and a final 3-bit flash stage, enabling continuous sampling on the rising clock edge while maintaining 8-clock-cycle pipeline latency. It integrates four independent ADC cores sharing a common 1.8 V AVDD and DRVDD supply, each with differential analog inputs (VIN±A–D) and serialized LVDS outputs (D±A–D).

Serial LVDS output operates at default ANSI-644 levels (247–454 mV differential voltage) or low-power reduced-signal mode (150–250 mV), with dedicated DCO± and FCO± outputs for DDR data capture and frame synchronization. Clock input accepts CMOS/LVDS/LVPECL signals (10–50 MSPS range), and internal reference supports 2 V p-p differential input range without external components.

Key Specifications

Pinout & Package

The AD9259ABCPZ-50 is housed in a RoHS-compliant, 48-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad (AGND) on the bottom requiring solder connection to PCB ground plane for thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9259ABCPZ-50, AD9287BCPZ-50 trades resolution for power efficiency and cost, while AD9228BSTZ-50 extends bandwidth and SFDR at higher power-neither offers 14-bit precision or identical 73 dB SNR at 50 MSPS, making AD9259ABCPZ-50 the optimal choice for mid-tier medical and communications systems balancing fidelity, size, and thermal envelope.

Availability

AD9259ABCPZ-50 is available at Aetrix Electronics and suitable for medical imaging systems, portable ultrasound devices, quadrature radio receivers, and optical network test equipment requiring stable component supply and long-term industrial temperature support.

Supply support for AD9259ABCPZ-50 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 with precision data converters and signal conditioning ICs.

The AD9259ABCPZ-50 belongs to Analog Devices' high-speed ADC product line, engineered specifically for space-constrained, multi-channel digitization applications demanding low power, excellent dynamic performance, and integrated serial interface functionality.

FAQ

What is the maximum analog input frequency supported by the AD9259ABCPZ-50?

The AD9259ABCPZ-50 features a 315 MHz full-power analog bandwidth, meaning it maintains specified dynamic performance (SNR/SFDR) for input signals up to 315 MHz when sampled at 50 MSPS. This enables direct digitization of IF signals in radio receivers without intermediate downconversion stages.

Does the AD9259ABCPZ-50 require an external voltage reference?

No, the AD9259ABCPZ-50 includes an internal 1.0 V reference with ±21 ppm/°C drift and ±30 mV output error, supporting its 2 V p-p differential input range without external components. The VREF, REFT, REFB, and SENSE pins allow optional external reference configuration if tighter accuracy or custom scaling is needed.

How does the serial LVDS interface of the AD9259ABCPZ-50 differ from parallel LVDS?

The AD9259ABCPZ-50 uses serial LVDS to transmit 14-bit samples per channel over two differential pairs (D+ and D−) at high speed, reducing pin count from 56 (for parallel 14-bit × 4) to 16 data lines plus DCO/FCO. This lowers PCB routing complexity, EMI, and connector cost while maintaining timing integrity via embedded clock recovery.

Can the AD9259ABCPZ-50 operate with a 2.5 V or 3.3 V supply?

No-the AD9259ABCPZ-50 is specified exclusively for 1.8 V operation on both AVDD and DRVDD rails. Supplying voltages outside the absolute maximum rating of −0.3 V to +2.0 V risks permanent damage. Its digital outputs are LVDS-compliant but not 3.3 V tolerant; level-shifting is required for interfacing with higher-voltage logic.

What is the purpose of the RBIAS pin on the AD9259ABCPZ-50?

The RBIAS pin on the AD9259ABCPZ-50 connects to an external resistor that sets the internal bias current for the ADC core. Adjusting this resistor allows fine-tuning of power consumption versus dynamic performance-lower resistance increases bias current (improving SFDR at cost of power), while higher resistance reduces current (lowering power with modest SNR trade-off).