Wide dynamic range DTMF receivers
8 October 2003
Telecoms, Datacoms, Wireless, IoT
Zarlink Semiconductor, the first to pioneer serial DTMF stream decoding and internal AGC has now broadened its range of wide dynamic range DTMF receivers. The new range of products use the lower cost and commonly available 'colour burst' oscillator (3,579 MHz). This family of products will enable customers to decrease its overall BOM costs, making them more competitive.
The DTMF receiver family use on chip Automatic Gain control, hence no external components are required. This family of products is ideally suited for the telephone answering machine, fax machines and any application requiring end-to-end signalling such as security systems.
Offered in a variety of packaging options, the wide dynamic range (50 dB) DTMF receivers are: ZL49010 - with early DTMF tone detection and power down mode; ZL49011 - with delayed DTMF tone detection and power down mode; ZL49020 - with early DTMF tone detection; ZL49021 - with delayed DTMF tone detection; ZL49030 - with early DTMF tone detection and power down mode; ZL49031 - with delayed DTMF tone detection and power down mode.
For more information contact Memec SA, 011 897 8600.
Further reading:
Mobile satellite connectivity available in SA
Telecoms, Datacoms, Wireless, IoT
Space42 has commercially launched its next generation mobile satellite service, Thuraya 4 NGS, available in South Africa as of February 2026.
Read more...
Next-gen Wi Fi 6E connectivity for embedded systems
iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Espressif Systems has expanded its connectivity portfolio with the introduction of the ESP32-E22, the company’s first Wi-Fi 6E connectivity co-processor.
Read more...
Quectel redefines connectivity with RG660Qx 5G Series
iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Purpose-built to meet the demands of next-generation IoT and wireless broadband, these modules leverage the cutting-edge Qualcomm X85 and X82 5G Modem-RF systems to deliver enterprise-grade performance.
Read more...
Contactless IO-Link couplers
IOT Electronics
Telecoms, Datacoms, Wireless, IoT
The IO-Link couplers from Phoenix Contact are industrial contactless couplers designed to transmit power and IO-Link data across a small air gap without physical connectors.
Read more...
Quectel’s RG255C-NA and RM255C-GL accelerate 5G RedCap adoption
iCorp Technologies
Editor's Choice Telecoms, Datacoms, Wireless, IoT
Quectel’s RG255C-NA and RM255C-GL modules represent a strategic move into this fast-growing segment, delivering Sub-6 GHz 5G connectivity optimised for mid-tier IoT applications.
Read more...
SDRs – Which RF architecture should you choose?
RFiber Solutions
Editor's Choice Telecoms, Datacoms, Wireless, IoT
There are several common methods of implementing SDR architectures. This paper discusses which is best when meeting a specific need.
Read more...
Multi-band GNSS patch antenna
RF Design
Telecoms, Datacoms, Wireless, IoT
The Taoglas AHP2356A is a compact, high-performance active GNSS patch antenna designed for next-generation positioning systems requiring precision, reliability, and multi-constellation support.
Read more...
Cellular routers for explosive areas
Phoenix Contact
Telecoms, Datacoms, Wireless, IoT
Updated versions of the Cellulink outdoor cellular router product range from Phoenix Contact are now available; they have been specially developed for use in Zone 2 potentially explosive areas.
Read more...
Power the next wave of IoT innovation
Links Field Networks
Telecoms, Datacoms, Wireless, IoT
Links Field Networks’ portfolio includes connectivity platforms, edge devices, and network management tools designed to support secure, resilient IoT deployments across a range of use cases.
Read more...
Move to smart agriculture
Otto Wireless Solutions
Telecoms, Datacoms, Wireless, IoT
Designed for precision agriculture, the RAKwireless SensorHub is a modular, industrial-grade IoT platform that collects real-time environmental and soil data across farming operations.
Read more...
printer friendly version