SI5315A-C-GM

SI5315A-C-GM is Silicon Labs’ high-performance clock generator/jitter cleaner (Si5315 family). It takes a reference clock and uses an internal PLL to produce one or more clean, low-jitter output clocks. The device is programmable via I2C and supports multiple output formats (e.g., LVCMOS, LVDS/LVPECL, HCSL) with individual output enables. Features often include spread-spectrum modulation, holdover, fault/status reporting, and flexible timing control. The “GM” suffix denotes packaging/variant options.
Typical uses include clock distribution and synchronization for FPGAs/ASICs, SerDes memories, processors, and telecom/data-communication line cards. For exact input frequency range, multiplication/division options, supported output formats, jitter/phase-noise specs, holdover behavior, and packaging details, consult the SI5315A data sheet and product documentation. This introduction provides the general concept: a programmable, multi-output, low-jitter clock conditioner from a single reference.

SI5315A-C-GM is Silicon Labs’ arbitrary-frequency clock multiplier/jitter cleaner. There isn’t an exact one-to-one equivalent; cross-references depend on specs (input/output frequencies, jitter, voltage, packaging). Closest options from other vendors: IDT 8T49N-series clock multipliers/cleaners; TI CDCL/CDCE clock generators. For an exact cross, use the datasheet and vendor cross-reference tools.

Key features of SI5315A-C-GM (Silicon Labs clock device):
- Programmable jitter-attenuating clock generator / zero-delay buffer
- Any-frequency input with flexible output generation (1:1 and fractional/multiplication/division options)
- Multiple outputs with independent enables and selectable output types/drive strengths
- Optional spread-spectrum clocking to reduce EMI
- Low jitter and low skew across outputs; stable phase relationship between outputs
- Power management: separate reference and output supplies; power-down mode
- Duty-cycle control and configurable output signaling levels (CMOS/LVTTL-type)
- Wide operating temperature range (industrial/high-temp variants)
- Small package (GM suffix denotes the specific lead-free package for SI5315A-C)
Note: exact electrical specs (frequency ranges, jitter figures, drive options, and package details) vary by variant. Check the datasheet for the precise numbers for your A-C-GM option.

Pin count: 28 pins (28-pin package, GM variant).
Function: I2C-programmable jitter-cleaning clock generator / PLL (frequency synthesizer) that takes a reference clock and outputs low-jitter clock(s) for system use (up to two outputs in many configurations).

- Manufacturer: Silicon Labs (Silicon Laboratories).
- Company type: A US-based semiconductor company that designs and manufactures silicon-based integrated circuits, including timing devices (clock generators/oscillators), microcontrollers, wireless ICs, and sensors.

SI5315A-C-GM is a programmable, jitter-attenuating clock generator/multiplier. Application areas include:
- Clocking for FPGAs/ASICs and other high-speed digital logic
- SERDES reference clocks (PCIe, SATA, USB, Ethernet, Fibre Channel)
- Networking and telecom line cards, switches/routers
- Data-center servers and storage devices requiring multiple synchronized clocks
- Optical transceivers and other telecom/transmission equipment
- Test and measurement equipment needing flexible, low-jitter clocks
It provides multiple outputs, adjustable division/multiplication, and phase/alignment control for precise system timing.

8-pin MSOP package (3×3 mm).