VHF/UHF integrated one-chip modulator ICs

28 February 2001 Telecoms, Datacoms, Wireless, IoT

A more elegant solution is now available for designers seeking low voltage and VHF/UHF booster/splitter functions thanks to two new modulator ICs introduced by Motorola. The MC44BC373 and MC44BC374 - that integrate the antenna booster/splitter functions with the traditional VHF/UHF multichannel modulator function, combine all sound subcarrier and VHF/UHF VCOS (voltage controlled oscillators) on a single chip. According to Motorola, this DigitalDNA solution will assist its customers in shortening design-time on television-related applications.

These chips allow for lower power consumption and are designed for applications that range from video cassette recorders (VCR), analog and digital set-top-boxes (STB) for satellite, terrestrial or cable television, to DVD players and video games.

"With these devices, there is no longer a need for external varactor diodes or coils. In addition, they solve the sensitivity problems related to bonding wire and PCB stray capacitances and inductances," states Don Bosco Grant of Motorola's Entertainment Division. "Potential customers no longer require the high frequency skills that were once necessary for this type of system implementation. Now, all this funtionality is encapsulated in a single chip."

The very small number of external components required makes it possible to implement a complete modulator module on the main VCR or STB chassis or to dramatically reduce tuner module size. Design of the module is greatly simplified, as well as the manufacturing flow since the remaining external components do not require any alignment, adjustment or matching.

[email protected]

Further reading:

Simplifying system design
iCorp Technologies Telecoms, Datacoms, Wireless, IoT
The FGMC63N tri-band MCU Wi-Fi 6E module from Quectel addresses offers integrated connectivity across 2,4 GHz, 5 GHz, and 6 GHz bands in a compact, highly optimised design.

Read more...

---

Dragino’s connectivity catalogue
Otto Wireless Solutions Telecoms, Datacoms, Wireless, IoT
Where Wi-Fi demands frequent charging and covers tens of meters, and traditional cellular consumes too much power for battery-operated nodes, LoRaWAN threads the needle.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

Practical design strategies for 5G
RF Design Telecoms, Datacoms, Wireless, IoT
The Cavli CQM211 aims to provide a platform that combines strong 5G connectivity with onboard compute capability, as well as interface flexibility that suits both new designs and rapid migrations from earlier products.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

An industry-first Android 16 smart module solution
RF Design Computer/Embedded Technology Telecoms, Datacoms, Wireless, IoT
The MeiG Smart SLM580 4G Smart Module features native support for Android 16 and covers core frequency bands in major countries and regions worldwide.

Read more...

---

High performance RF signal conditioning
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
The AM3269 from Mercury Systems is a high-performance RF preselector module designed to improve receiver sensitivity and signal integrity in demanding electronic warfare, signals intelligence, test, and communications applications.

Read more...

---

RF filters explained
RFiber Solutions Telecoms, Datacoms, Wireless, IoT
As RF environments become increasingly crowded, RF filters play a critical role in maintaining signal quality, improving system performance, and ensuring reliable operation.

Read more...

---

GigaDevice expands optical communication portfolio
NuVision Electronics Telecoms, Datacoms, Wireless, IoT
GigaDevice has introduced the new GD32E512 and GD32E252 series MCUs specifically designed for optical module applications.

Read more...

---

Industrial connectivity without compromise
Telecoms, Datacoms, Wireless, IoT
The IR315 combines 4G LTE, Wi-Fi, Ethernet, and VPN technologies into a rugged, industrial-grade platform that enables seamless connectivity across a wide range of applications.

Read more...

---