Infineon Technologies CY22800FXC-035A

Overview

CY22800FXC-035A from Cypress Semiconductor is an audio clock generator IC for HDTV and STB systems, configured for 512× oversampling (512fs) of standard audio sample rates. It accepts a 27 MHz crystal or external clock input and delivers two synchronized outputs: CLKA at (32 kHz, 44.1 kHz, 48 kHz) × 512 and CLKB fixed at 27 MHz. Designed for low-jitter, high-accuracy audio timing in consumer digital video/audio equipment, it operates at 3.3 V and supports reprogramming up to 100 times.

For engineers reviewing the CY22800FXC-035A datasheet, CY22800FXC-035A pinout, CY22800FXC-035A application, or CY22800FXC-035A equivalent, this device is selected for precise audio clock synthesis in HDMI/SPDIF audio subsystems where jitter-sensitive DAC/ADC interfaces require stable, scalable, and EMI-reduced timing with configurable spread spectrum capability.

Technical Context

The CY22800FXC-035A implements a proprietary phase-locked loop (PLL) architecture optimized for audio clock multiplication, accepting a 27 MHz reference and generating exact integer multiples - specifically 512× base audio rates (e.g., 44.1 kHz × 512 = 22.5792 MHz). Its output structure includes one programmable clock (CLKA) and one fixed 27 MHz output (CLKB), both derived from the same PLL core to ensure tight inter-channel skew.

It supports no VCXO or spread spectrum functionality per Table 2 configuration -035A (VCXO = N, SS = N), confirming a fixed-frequency, low-phase-noise synthesis mode. The device uses internal frequency-select logic (FS0/FS1/FS2) to configure output ratios but remains unmodulated in this variant, prioritizing spectral purity over EMI reduction.

Key Specifications

Pinout & Package

8-pin SOIC package with 1.27 mm pitch, JEDEC MS-012AC compliant; thermally optimized for low-power audio clock generation in space-constrained consumer enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar audio clock generation applications.

Compared with Si5338A-A-GM and CY22393FXC, the CY22800FXC-035A offers optimal balance of audio-specific preset accuracy, field reprogrammability, and SOIC-8 drop-in deployment - making it ideal for volume HDTV/STB production where time-to-market and audio fidelity are jointly prioritized.

Availability

CY22800FXC-035A is available at Aetrix Electronics and suitable for HDMI audio subsystems, SPDIF transmitter modules, high-fidelity DAC timing, and multi-channel audio processing requiring stable component supply and guaranteed long-term manufacturability.

Supply support for CY22800FXC-035A 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

Cypress Semiconductor (now part of Infineon Technologies) is a fabless semiconductor company specializing in programmable system-on-chip (PSoC), memory, and timing solutions for consumer, industrial, and automotive markets.

The CY22800 product line was designed specifically for flexible, high-accuracy clock synthesis in digital video and audio consumer electronics - emphasizing factory-programmable versatility, low EMI, and seamless integration into HDTV, STB, and DVD recorder platforms.

FAQ

What audio sample rates does CY22800FXC-035A support?

This device supports 32 kHz, 44.1 kHz, and 48 kHz base audio rates multiplied by 512 - yielding exact output frequencies of 16.384 MHz, 22.5792 MHz, and 24.576 MHz respectively. These match industry-standard audio interface requirements for HDMI, SPDIF, and I²S protocols without interpolation or resampling.

Does CY22800FXC-035A include spread spectrum or VCXO capability?

No. Per its configuration code -035A in Table 2 of the datasheet, this variant has Spread Spectrum (SS) = N and VCXO = N. It operates in fixed-frequency, low-jitter synthesis mode only - optimized for audio spectral purity rather than EMI reduction.

Can CLKB be used as a system reference clock while CLKA drives the audio DAC?

Yes. CLKB delivers a clean, fixed 27 MHz output derived from the same PLL core as CLKA, ensuring sub-50 ps inter-output skew. This allows simultaneous use - e.g., CLKA for DAC MCLK and CLKB for audio processor or HDMI controller reference - without introducing timing misalignment.

Is external programming hardware required to deploy CY22800FXC-035A?

No. The -035A variant ships pre-programmed with its 512fs audio configuration and is fully functional upon power-up. The CY36800 programmer dongle is only needed if reprogramming is required later - for example, to switch between 44.1 kHz and 48 kHz base rates during development or field updates.