Infineon Technologies CY22800FXC-036A

Overview

CY22800FXC-036A from Cypress Semiconductor is an audio clock generator IC for HDTV and STB systems, configured for 768× oversampling (768fs) of standard audio sample rates (32 kHz, 44.1 kHz, 48 kHz), with a 27 MHz crystal/CLKIN input and dual outputs: CLKA delivering programmable audio master clocks up to 36.864 MHz (48 kHz × 768), and CLKB providing a stable 27 MHz reference. It operates at 3.3 V and supports commercial temperature range (0°C to 70°C).

For engineers reviewing the CY22800FXC-036A datasheet, CY22800FXC-036A pinout, CY22800FXC-036A application, or CY22800FXC-036A equivalent, this device serves as a field-programmable, reprogrammable (up to 100 times) clock synthesizer optimized for low-jitter audio timing in consumer digital video/audio systems requiring precise fs-multiple clock synthesis and EMI reduction via spread spectrum capability.

Technical Context

The CY22800FXC-036A implements a proprietary phase-locked loop (PLL) architecture with integrated frequency dividers and multipliers to generate exact integer multiples of base audio sample rates. Its configuration is fixed per part number - here, it delivers (32k/44.1k/48k) × 768 on CLKA and passes through 27 MHz on CLKB.

It supports no VCXO or spread spectrum in this variant (SS = N, VCXO = N per Table 2), relies on a 27 MHz crystal or external clock input (XIN/CLKIN), and uses internal logic to route FS0–FS2 pins for configuration selection - though these are inactive in factory-programmed -036A mode, where functionality is hardwired per one-time configuration file.

Key Specifications

Pinout & Package

Package: 8-pin SOIC (Small Outline Integrated Circuit), surface-mount, 150 mil width, JEDEC MS-012AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338-A-GM, CY22800FXC-036A offers simpler integration and lower BOM cost for fixed 768fs audio systems, while ICS9FGP108B lacks the 36.864 MHz capability needed for full 48 kHz-based HDMI audio compliance - making CY22800FXC-036A the optimal balance of precision, flexibility, and cost in dedicated HDTV/STB audio clocking.

Availability

CY22800FXC-036A is available at Aetrix Electronics and suitable for HDTV audio subsystems, set-top box audio processing, AV receiver digital front-ends, and Blu-ray player audio timing requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.

Supply support for CY22800FXC-036A 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 high-performance timing, memory, and programmable logic solutions for consumer, industrial, and automotive markets.

The CY22800 product line was designed specifically for flexible, low-jitter clock generation in digital video and audio consumer electronics - emphasizing field programmability, EMI reduction, and multi-standard compatibility in space-constrained STB and HDTV platforms.

FAQ

What audio sample rates does CY22800FXC-036A support?

CY22800FXC-036A supports 32 kHz, 44.1 kHz, and 48 kHz base sample rates multiplied by 768, yielding exact master clock outputs of 24.576 MHz, 33.8688 MHz, and 36.864 MHz respectively. These values are generated via integer-N PLL synthesis with no fractional division, ensuring minimal jitter and deterministic phase relationships required for high-fidelity audio conversion.

Can CY22800FXC-036A be reprogrammed in-system?

Yes - CY22800FXC-036A retains full field-programmability using the CY36800 programmer dongle and Cypress's ClockWizard software. It supports up to 100 reprogramming cycles, allowing engineers to update clock configurations post-manufacture for audio format validation, EMI tuning, or yield recovery without hardware modification.

Does CY22800FXC-036A include spread spectrum or VCXO functionality?

No - per Table 2 of the datasheet, CY22800FXC-036A has SS = N and VCXO = N. It operates with fixed-frequency synthesis only, using a 27 MHz crystal input and delivering deterministic, low-jitter outputs without modulation or voltage-controlled tuning. This ensures maximum phase stability for audio DAC/ADC sampling clocks.

What is the maximum load drive capability of CLKA and CLKB outputs?

Each output (CLKA and CLKB) drives up to 15 pF capacitive load at 3.3 V with ≤10 ns rise/fall times, meeting LVCMOS specifications. For heavier loads or longer traces, Cypress recommends adding series termination resistors (22–33 Ω) near the driver and maintaining controlled-impedance routing to preserve signal integrity and minimize reflections in high-speed audio clock distribution.