Skyworks Solutions Inc. 516CHA000109AAG

Overview

516CHA000109AAG 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 timing source in telecom synchronization and FPGA clock generation.

For engineers reviewing the 516CHA000109AAG datasheet, 516CHA000109AAG pinout, 516CHA000109AAG application, or 516CHA000109AAG equivalent, key selection criteria include dual-frequency switching via FS pin, control voltage linearity (±1% BSL), supply noise rejection (≤4.0 ps jitter increase at 100 kHz), startup time (≤10 ms), and compatibility with SONET/SDH, PON, and broadcast video systems.

Technical Context

The 516CHA000109AAG implements an integrated PLL-based synthesizer using a fixed AT-cut fundamental-mode crystal, eliminating need for multiple crystals per frequency. Its architecture enables two user-selectable output frequencies (156.25 MHz and 125 MHz) via digital FS pin control, with programmable Kv (150 ppm/V) and APR (±100 ppm).

It features a 1:2 CMOS fanout buffer, supports tristate operation, and delivers <1.3 ps RMS period jitter (LVPECL) and <0.35 ps RMS phase jitter (CMOS, 1.875–20 MHz integration). The device operates across –40°C to +85°C with 2.97–3.63 V supply and exhibits 100 kΩ Vc input impedance and 10 kHz modulation bandwidth.

Key Specifications

Pinout & Package

516CHA000109AAG uses a 5×7 mm, 6-pin surface-mount package (JEDEC MO-220, variant VDGA) with standard footprint per Figure 3 and Table 14. Pin 1 is marked by a circle (0.5 mm diameter) on top marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si515ACA000109AAG and DS3205Z-156.25M, the 516CHA000109AAG uniquely combines dual-frequency hardware switching, 150 ppm/V analog tuning, and sub-0.35 ps CMOS phase jitter-making it optimal for multi-protocol, dynamically reconfigurable timing systems.

Availability

516CHA000109AAG is available at Aetrix Electronics and suitable for SONET/SDH line cards, PON optical line terminals, and broadcast video equipment requiring stable component supply, short lead times (<2 weeks), and factory-programmed dual-frequency precision.

Supply support for 516CHA000109AAG 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 semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and power management ICs.

The Si516 product line delivers programmable, low-jitter timing devices targeting telecom infrastructure, optical networking, and high-performance computing where dual-frequency agility and supply noise immunity are critical.

FAQ

What are the exact factory-programmed frequencies for 516CHA000109AAG?

The 516CHA000109AAG is configured with two precise output frequencies: 156.25 MHz (selected when FS = 1) and 125 MHz (selected when FS = 0). These values are permanently programmed into the device at Skyworks' factory and cannot be modified in-system. Both frequencies comply with ITU-T G.8262 EEC-2 specifications for synchronous equipment clocks and are validated across the full –40°C to +85°C operating range. The 516CHA000109AAG datasheet confirms these frequencies in the ordering information section and electrical specifications tables.

Does 516CHA000109AAG support LVDS or LVPECL output formats?

No, the 516CHA000109AAG is specifically configured for CMOS output format, as indicated by the "C" in the 1st option code of its part number. While the broader Si516 family supports LVPECL, LVDS, HCSL, and dual CMOS variants, this exact variant (516CHA000109AAG) has CMOS single-ended outputs only. Attempting to use it in LVDS or LVPECL circuits would result in incompatible voltage levels and drive strength. For differential outputs, engineers should select alternate part numbers such as 516BAA000109AAG (LVDS) or 516AAA000109AAG (LVPECL).

What is the absolute pull range (APR) and tuning slope (Kv) for 516CHA000109AAG?

The 516CHA000109AAG has a minimum absolute pull range (APR) of ±100 ppm and a tuning slope (Kv) of 150 ppm/V, as specified by the "A" in the 2nd option code. This means the output frequency can be adjusted by ±100 ppm around each nominal frequency (156.25 MHz and 125 MHz) using a control voltage ranging from 0.1×VDD to 0.9×VDD. The 150 ppm/V slope ensures linear, predictable tuning behavior with ≤±1% BSL linearity, verified across temperature and supply variations per Table 2 in the official datasheet.

How does the FS pin function on 516CHA000109AAG?

The FS (Frequency Select) pin on the 516CHA000109AAG is a digital input that selects between its two factory-programmed frequencies: applying logic high (VIH ≥ 0.80×VDD) selects 156.25 MHz, while logic low (VIL ≤ 0.20×VDD) selects 125 MHz. The internal pull-up resistor (45 kΩ) ensures default selection of the higher frequency if left unconnected. Switching occurs within 10 ms (settling time tFRQ), with no glitch or runt pulses observed on the CLK output. This hardware-based selection eliminates software overhead and enables deterministic clock domain transitions in real-time systems.

Is 516CHA000109AAG RoHS-compliant and what package does it use?

Yes, the 516CHA000109AAG is Pb-free and RoHS-compliant per EU Directive 2011/65/EU, with gold-over-nickel contact pads and JEDEC-standard 5×7 mm, 6-pin surface-mount package (outline per Figure 3 and Table 14). This package supports standard reflow profiles per J-STD-020E, including peak temperature of 260°C for 20–40 seconds. The device is supplied in tape-and-reel format (indicated by final "R" in part number), and its land pattern dimensions (C1 = 4.20 mm, E = 2.54 mm, X1 = 1.55 mm, Y1 = 1.95 mm) are documented in Figure 4 and Table 15 of the datasheet.