Infineon Technologies CY22150KFZXIT

Overview

CY22150KFZXIT from Infineon Technologies (formerly Cypress) is a single-PLL, flash- and I²C-programmable clock generator delivering six configurable outputs up to 200 MHz. It accepts 8–30 MHz crystal or 1–133 MHz driven reference inputs, operates at 3.3 V with optional 2.5 V output level, and supports industrial temperature range (–40 °C to +85 °C). It is used in telecom line cards requiring precise, field-upgradable timing for multi-rate SERDES interfaces.

For engineers reviewing the CY22150KFZXIT datasheet, CY22150KFZXIT pinout, CY22150KFZXIT application, or CY22150KFZXIT equivalent, key selection criteria include its dual programming mode (nonvolatile flash + volatile I²C), post-divider flexibility (/2, /3, /4, /DIV1N, /DIV2N, bypass), and support for programmable crystal load capacitance and oscillator gain - critical for robust crystal startup across manufacturing variance.

Technical Context

The device implements a single PLL with P/Q integer dividers and two independently programmable post-divider banks (DIV1N/DIV2N), enabling frequency synthesis from one reference source to six outputs with independent division ratios. The crosspoint switch matrix routes either the VCO output ((REF × P)/Q) or the raw reference (REF) to each output channel.

It features dual power domains: AVDD/VDDL supply the analog PLL and output buffers separately from digital logic (VDD), and dedicated ground pins (AVSS, VSSL, VSS) minimize noise coupling. The I²C interface (7-bit address 0x69) provides volatile runtime reconfiguration, while flash memory retains factory- or distributor-programmed settings across power cycles.

Key Specifications

Pinout & Package

16-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch) with thermally enhanced pad and segregated analog/digital power/ground domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Si5338A-D-GM and ICS8430I-01T, the CY22150KFZXIT uniquely balances field programmability, industrial temperature operation, and six flexible CMOS outputs in a single TSSOP package - making it optimal for mid-volume industrial and telecom designs requiring design-in agility without sacrificing ruggedness.

Availability

CY22150KFZXIT is available at Aetrix Electronics and suitable for network switch timing, industrial PLC backplane synchronization, and medical imaging data acquisition requiring stable component supply, long-term lifecycle assurance, and industrial-grade qualification.

Supply support for CY22150KFZXIT 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and security solutions for automotive, industrial, and IoT markets.

The CY22150 belongs to Infineon's legacy Cypress clock generation portfolio, designed specifically for general-purpose, field-programmable timing in cost-sensitive industrial and communications infrastructure where flash configurability and I²C adaptability outweigh ultra-low-jitter requirements.

FAQ

What is the default state of CY22150KFZXIT after power-on?

At power-up, unprogrammed CY22150KFZXIT devices enter a default state where all outputs are three-stated, the crystal oscillator is active, and internal registers retain factory-blank values. If previously flash-programmed, it boots with stored configuration; if only I²C-configured, it reverts to blank state on power cycle unless reinitialized by host firmware.

Can CY22150KFZXIT generate non-integer multiples of the input reference?

No - the CY22150KFZXIT uses integer-N PLL architecture with P/Q dividers and fixed post-dividers (/2, /3, /4, /DIV1N, /DIV2N). It cannot synthesize fractional frequencies like 122.88 MHz from a 25 MHz crystal. For such ratios, external divider ICs or fractional-N alternatives (e.g., Si5338) are required.

How is crystal load capacitance programmed, and why does it matter?

Load capacitance is set via 8-bit register 13H, calculating CapLoad = (CL – CBRD – 6 pF)/0.09375 pF. Accurate setting matches the crystal's specified CL (e.g., 12 pF), ensuring reliable oscillation startup and frequency stability across voltage/temperature - incorrect values cause start-up failure or frequency drift.

Is XOUT pin required when using an external clock on XIN?

No - XOUT (Pin 16) must be left floating when XIN is driven by an external clock source. Connecting XOUT in driven-clock mode creates unintended feedback paths that may cause oscillation instability or excessive current draw. The datasheet explicitly states "Float XOUT if XIN is driven."