Analog Devices Inc. AD8150AST

Overview

AD8150AST from Analog Devices is a 33 × 17 fully differential nonblocking digital crosspoint switch IC designed for high-speed serial data routing in backplane and video switching systems. It supports >1.5 Gbps NRZ data rate per port, operates from ±3.3 V or ±5 V supplies, delivers <50 ps p-p jitter, and drives 50 Ω loads directly without heat sinks.

For engineers reviewing the AD8150AST datasheet, AD8150AST pinout, AD8150AST application, or AD8150AST equivalent, this page provides verified technical context, validated pin functions, confirmed industrial-temperature operation (0°C to 85°C), and real-world substitution guidance for HD/SD video and OC-24 optical network designs.

Technical Context

The AD8150AST implements a fully differential 33 × 17 switch matrix with dual-rank 7-bit latches (first-rank for input address storage, second-rank for output configuration), enabling asynchronous programming and global update control. Its PECL/ECL-compatible differential I/Os support 200–1000 mV_p-p input swing and deliver 800 mV_p-p differential output swing into 50 Ω.

Control logic uses CMOS/TTL-level inputs (3 V to 5 V) with dedicated CS, WE, RE, UPDATE, and RESET pins; propagation delay is 650 ps with ±100 ps channel-to-channel match. Output current is programmable via REF/VEEREF pins, supporting 5–25 mA per channel.

Key Specifications

Pinout & Package

AD8150AST is housed in a 184-lead LQFP package (16 mm × 16 mm, 0.5 mm pitch) with exposed thermal pad, rated for industrial temperature operation (0°C to 85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital crosspoint switch applications.

Compared with AD8150AST, AD8151AST offers higher bandwidth and jitter performance at increased power and thermal cost, while MAX4815ETM+ trades scalability and voltage flexibility for compactness and interface simplicity - selection depends on required port count, speed headroom, and system-level power/PCB constraints.

Availability

AD8150AST is available at Aetrix Electronics and suitable for HD/SD digital video routing, fiber optic network switching, and backplane interconnect applications requiring stable component supply, long-term industrial temperature qualification, and guaranteed traceable sourcing.

Supply support for AD8150AST 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 AD8150AST belongs to Analog Devices' Xstream family of high-speed digital switches, engineered specifically for low-jitter, high-density routing in broadcast video infrastructure and optical transport equipment.

FAQ

What is the maximum data rate supported by the AD8150AST?

The AD8150AST supports a maximum data rate of 1.5 Gbps per port in NRZ format, verified across the full industrial temperature range (0°C to 85°C) with <50 ps p-p jitter. This rating applies to all 33 × 17 switch paths under specified supply conditions (±3.3 V or ±5 V) and 50 Ω termination. The AD8150AST datasheet confirms this performance in Table 1 and Figures 7 and 10.

Does the AD8150AST require external heat sinking?

No, the AD8150AST does not require external heat sinking. Its typical power dissipation is less than 1.5 W (400 mA at VEE = −3.3 V), and its thermal resistance θ_JA is 30°C/W in the 184-lead LQFP package. The device operates reliably within its junction temperature limit (≤125°C) under free-air conditions across the full industrial temperature range, as confirmed in the Thermal Characteristics section and Figure 3 of the AD8150AST datasheet.

Can the AD8150AST interface directly with both PECL and ECL logic families?

Yes, the AD8150AST supports direct interfacing with both PECL and ECL logic families through flexible supply configuration: use VCC = +3.3 V or +5 V with VEE = 0 V for PECL operation, or VCC = 0 V with VEE = −3.3 V or −5 V for ECL operation. Input voltage range (common-mode: VCC − 2 V to VCC) and output swing (800 mV_p-p) are compatible with standard PECL/ECL levels, as specified in the Input and Output Characteristics tables of the AD8150AST datasheet.

How is output current programmed on the AD8150AST?

Output current on the AD8150AST is programmed using an external resistor connected between REF and VEEREF pins. The value sets output current per channel from 5 mA to 25 mA, enabling precise termination impedance matching for varying trace lengths and load conditions. The relationship is linear and documented in Figure 18 and the Output Current Set Pin (REF) section of the AD8150AST datasheet, with typical I_OUT = 16 mA at R_SET = 1.54 kΩ.

What is the function of the dual-rank latch architecture in the AD8150AST control interface?

The dual-rank latch architecture in the AD8150AST separates configuration loading (first-rank latches) from signal path activation (second-rank latches), enabling glitch-free reprogramming. Users write new routing data to first-rank latches asynchronously, then issue a global UPDATE command to atomically copy all 17 configurations to second-rank latches - preventing partial updates and metastability during live traffic. This behavior is defined in Tables 4 and 5 and Figure 31 of the AD8150AST datasheet.