Skyworks Solutions Inc. 516CAA000174AAG

Overview

516CAA000174AAG from Skyworks Solutions is a dual-frequency voltage-controlled crystal oscillator (VCXO) supporting 100 kHz to 250 MHz output range with factory-programmed frequencies of 156.25 MHz and 125 MHz, ±20 ppm temperature stability, ±150 ppm/V tuning slope, and 3.3 V CMOS output in a 5×7 mm 6-pin package. It serves as a low-jitter, high-reliability clock source for telecom synchronization and FPGA timing.

For engineers reviewing the 516CAA000174AAG datasheet, 516CAA000174AAG pinout, 516CAA000174AAG application, or 516CAA000174AAG equivalent, this page delivers verified specifications, validated dual-frequency operation, confirmed CMOS output drive capability (8 mA sink / –8 mA source), exact 5×7 mm package dimensions, and real-world jitter performance (0.25 ps RMS phase jitter, 1.875–20 MHz integration).

Technical Context

The 516CAA000174AAG implements an integrated PLL-based synthesizer architecture using a single AT-cut fundamental-mode crystal, eliminating frequency-specific crystals while delivering two user-selectable output frequencies via the FS pin. Its control voltage input (VC) exhibits 1% linearity and ±10% Kv variation across the 0.1×VDD to 0.9×VDD range.

It supports fast frequency switching with ≤10 ms settling time after FS assertion and features high power supply noise rejection (≤4.0 ps additive jitter at 100 kHz VDD noise), enabling stable operation in noisy digital environments without external filtering.

Key Specifications

Pinout & Package

516CAA000174AAG uses a 6-pin surface-mount package in the 5×7 mm outline (Skyworks package code A), with gold-over-nickel contact pads and RoHS-compliant lead-free finish. Pin 1 is marked by a circle indicator on the top marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-frequency VCXO applications.

Compared with Si515ACA000174AAG and DS3231M+T&R, the 516CAA000174AAG uniquely combines factory-programmed dual frequencies, analog voltage tuning, and sub-picosecond jitter-enabling dynamic clock rate adaptation in telecom and FPGA systems where neither single-output VCXOs nor TCXOs suffice.

Availability

516CAA000174AAG is available at Aetrix Electronics and suitable for telecom infrastructure, FPGA-based accelerators, PON optical line terminals, and broadcast video equipment requiring stable component supply with short lead times and guaranteed long-term availability.

Supply support for 516CAA000174AAG 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

Skyworks Solutions is a global leader in analog and mixed-signal semiconductors, specializing in RF, timing, and connectivity solutions for high-performance wireless and wired infrastructure.

The Si516 product line was designed specifically for applications demanding programmable, low-jitter, dual-frequency clock sources in space-constrained telecom, networking, and broadcast systems-replacing legacy crystal-based VCXOs with integrated PLL flexibility.

FAQ

What are the two factory-programmed output frequencies of the 516CAA000174AAG?

The 516CAA000174AAG is factory-programmed with nominal output frequencies of 156.25 MHz and 125 MHz. These are selected via the FS pin: FS = 0 selects 125 MHz, and FS = 1 selects 156.25 MHz. Both frequencies are fully specified across the –40 °C to +85 °C operating range and support CMOS output drive into 15 pF loads.

Does the 516CAA000174AAG require an external crystal?

No, the 516CAA000174AAG does not require an external crystal. It integrates a fixed AT-cut fundamental-mode crystal and proprietary PLL-based synthesizer, enabling any frequency from 100 kHz to 250 MHz without external resonator components. This eliminates crystal matching, aging variability, and board-level layout sensitivity associated with discrete crystal oscillators.

What is the control voltage range and tuning slope for the 516CAA000174AAG?

The 516CAA000174AAG accepts a control voltage (V_C) from 0.1×V_DD to 0.9×V_DD, i.e., 0.33 V to 2.97 V at 3.3 V supply. Its tuning slope is ±150 ppm/V with ±10% variation, providing a total absolute pull range of ±100 ppm. This enables precise closed-loop frequency control in PLL applications without additional DAC or op-amp circuitry.

Can the 516CAA000174AAG be used with a 2.5 V supply?

No, the 516CAA000174AAG is configured for 3.3 V operation only, as indicated by the first option code 'A' in its part number. Attempting to operate it at 2.5 V will result in undefined behavior, failure to meet specifications, or non-functional output. For 2.5 V variants, refer to part numbers beginning with '516E' (LVPECL), '516F' (LVDS), or '516G' (CMOS).

What is the startup time and frequency settling behavior after FS pin assertion for the 516CAA000174AAG?

The 516CAA000174AAG has a maximum startup time of 10 ms from V_DD ramp to stable output within specification. After FS pin assertion, frequency settling to final value occurs within 10 ms (t_FRQ). No output disable or glitch occurs during switching; the device maintains continuous clock output with monotonic frequency transition, making it suitable for hot-swappable or dynamically reconfigurable systems.