LC72121V-TLM-E

Clock Generators, PLLs, Frequency Synthesizers Overview

The LC72121V-TLM-E is a high input sensitivity PLL frequency synthesizer designed for 3 V systems, featuring 20 mVrms sensitivity at 130 MHz. It utilizes a redesigned ground system to lower spurious radiation, supporting high-performance AM/FM tuners. The device operates on a supply voltage of 2.7 to 3.6 V and functions within a temperature range of –40 to 85°C. It includes a high-speed programmable divider (FMIN: 10 to 160 MHz), an IF counter (IFIN: 0.4 to 15 MHz), and supports 12 selectable reference frequencies derived from 4.5 or 7.2 MHz crystals. The IC is serial data (CCB) compatible with the LC72131.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• High-speed programmable divider using pulse swallower technique (AMIN: 2 to 40 MHz) and direct division (0.5 to 10 MHz).
• Built-in phase comparator with dead zone control, unlocked state detection, and deadlock clear circuit.
• Integrated MOS transistor for active low-pass filter operation.
• I/O configuration includes four output-only ports and two I/O ports supporting clock time base signal output.

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-performance AM/FM tuners requiring improved input sensitivity.
• Electronic tuning circuits utilizing CCB serial data compatibility.
• Systems requiring built-in unlocked state detection and deadlock clearing.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering suffix 'TLM-E' corresponds to the SSOP24(275mil) package with Tape and Reel shipping containing 1000 units per reel. Confirm Pb-Free status and ensure the specific pin assignment matches the MFP24S equivalent design requirements.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this variant when SSOP24 packaging is required for automated assembly. Ensure the application supports the 2.7 to 3.6 V supply range. Verify that the host controller supports the CCB serial data format for programming the internal dividers and reference frequencies.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the LC72121 family, which includes the LC72121 and LC72121M. The LC72121V specifically denotes the SSOP24 package version. It shares identical pin functions with the LC72131/M but adds two VSS pins for improved grounding and reduced spurious radiation.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The LC72121V-D-MPB-E and LC72121V-D-TML-E are alternative variants within the same package type but differ in shipping quantities (Fan-Fold vs. Tape and Reel).