Toshiba Launches New Single-Chip RF/IF Receivers for Short-Range, Low-Power Wireless Applications
Low-Cost, High-Sensitivity Devices Combine AM or AM/FM Comparators, RF Amplifier, and Local ×8 Circuit in a Small Package
SAN JOSE, Calif.--April 21, 2003--Toshiba America Electronic Components, Inc. (TAEC) announced it has broadened its wireless product lineup with the introduction of a pair of new radio-frequency (RF)/intermediate-frequency (IF) receivers that operate at 240 MHz to 450 MHz and provide high sensitivity with low power consumption.
The TA31275FN is an RF/IF detector integrated circuit (IC) for AM/FM radio, and the TA31273FN is an RF/IF detector IC for AM radio only. Both low-cost monolithic devices incorporate an RF amplifier, a two-level comparator, and a local ×8 circuit. They are targeted at a wide range of short-range, low-power wireless applications, including remote keyless-entry systems, tire-pressure monitoring systems, telemetry, and RF metering.
"Wireless products are becoming a pervasive part of consumers' lives. The burgeoning list of wireless products ranges from remote locks, security systems, tire-pressure monitoring systems, and gate openers to wireless keyboards, mice, telemetry, and light switches," said Farhad Mafie, vice president of the ASSP Business Unit at TAEC. "As manufacturers rush to bring new devices to market, they face constant pressure to provide high-performance products at lower cost. Toshiba's new low-power, low-cost data-communication devices give customers a head start on adding short-range wireless functionality to a host of existing and new applications without expensive rewiring."
"We believe our new TA31273FN and TA31275FN receivers provide the right blend of low cost, high sensitivity, low power consumption, and essential features. We are pleased that we have already achieved design wins in the automotive segment for remote keyless-entry and tire-pressure monitoring applications," said Abdul Aslami, business development manager in the ASSP Business Unit at TAEC.
Pricing and Availability
Samples of TA21273FN and TA31275FN are currently available in both sample and volume production quantities. Each device is priced at $0.99 per piece in 10,000-piece quantities.
Part NumbersTA31273FN RF/IF receiver for AM radio, TA31275FN RF/IF receiver for AM/FM radio
RF Frequency240 MHz to 450 MHz (when multiplication is used), 100 MHz to 450 MHz (without multiplication)
Mixer Frequency240 MHz to 450 MHz
IF Frequency10.7 MHz
Current Consumption0 to 5 µA (typical) dissipation at battery-saving mode
TA31273FN: 6.8 mA when local oscillator is not operated
TA31275FN: Frequency-shift-keying (FSK) using ×8 multiplecircuit: 5.8 mA
FSK without ×8 multiple circuit: 3.4 mA
Amplitude-shift-keying (ASK) using ×8 multiple circuit: 5.4 mA
ASK without ×8 multiple circuit: 3.0 mA
Power-Supply VoltageTA31273FN: 3.0 V to 5.5 V
TA31275FN: 2.4 V to 5.5 V
Built-in AM and FMTA31273FN: AM demodulation only, TA31275FN: AM and FM comparator
Built-in RF amplifier Functionality
Local ×8 multiple circuit
PackageTA31273FN: 20-pin SSOP (0.65 mm pitch), TA31275FN: 24-pin SSOP (0.65 mm pitch)
New Single-Chip 2.4 GHz Radio Transceiver from Toshiba Integrates Receiver and Transmitter
Low-Cost Device Combines Essential Radio Communication Functions in a Small Package to Suit Wide Range of Low-Data-Rate, Short-Range Wireless Applications
SAN JOSE, Calif.--April 21, 2003--Toshiba America Electronic Components, Inc. (TAEC) announced a new single-chip radio transceiver in a compact package that provides the radio receive and transmit functions for radio-communications systems in the unlicensed 2.4 GHz Instrumentation, Scientific, and Medical (ISM) frequency band.
Designated TB32301AFL, the low-cost, highly integrated monolithic device also incorporates a low-noise amplifier (LNA), frequency-modulation (FM) detector, voltage-controlled oscillator (VCO), power amplifier (PA), and received-strength signal indicator (RSSI). It is targeted at a wide range of radio-frequency (RF) communication applications, including remote control, office and building security, and wireless home networks.
"The general-purpose radio market is a good fit for Toshiba Corporation's core competency to supply devices in high-volume production quantities into a wide range of customer applications," said Farhad Mafie, vice president of the ASSP Business Unit at TAEC. "Our comprehensive customer support infrastructure includes application engineering, and assures our customer base of a competitive, fast time-to-market solutions with both silicon and a reference design."
Toshiba achieved the highly integrated, single-chip solution by using bipolar complementary metal oxide semiconductor (BiCMOS) process technology and a low-intermediate-frequency (IF) architecture. It is housed in a very compact 36-pin QON package that together with the reduced external component count achieves board size reductions.
"The TB32301AFL radio transceiver is targeted at customers who want to add a low-cost radio link in the 2.4 GHz band to their products," said Abdul Aslami, business development manager of the ASSP Business Unit at TAEC. "We believe the device's optimal feature set, level of integration, and ease of use will make it attractive to customers in a wide range of low-data-rate, short-range radio-link applications such as garage-door openers, gaming controls, wireless industrial control, and remote utility meter reading."
Pricing and Availability
Engineering samples of TB32301AFL are available now, and are priced at $1.99 per piece in 100,000-piece quantities. Mass production is slated to begin in June, 2003.
Process TechnologyBi-CMOS process technology
Power-Supply Voltage2.7 V to 3.3 V (operating temperature range -20°C to 70°C)
Clock Frequency420 MHz
Operating Frequency2,4002,500 MHz
Operating Temperature-20°C to +70°C
ReceiverSuperheterodyne receiver. Due to linear demodulator, an IF frequency surface acoustic-wave filter isn't needed.
Modulator/DemodulatorDigital input on modulator and digital output on demodulator with high stability for noise interference.
Package36-pin QON compact package (0.5 mm pitch)
Microchip Technology Introduces Complete Solution for Short-Range Unidirectional Radio-Frequency Applications
Three RF transmitters, two RF receivers form complete system solution
CHANDLER, Ariz.--April 21, 2003--Continuing to provide novice and experienced radio-frequency (RF) designers with easy-to-adopt solutions, Microchip Technology Inc., a leading provider of microcontroller and analog semiconductors, introduced a complete system solution for short-range unidirectional RF communication. Consisting of three microcontrollers with integrated transmitters and two receivers, Microchip now offers several products supporting frequency bands ranging from 260930 MHz.
By combining the rfPIC12F675 microcontroller/transmitters with either the rfRXD0420 receiver or rfRXD0920 receiver, users can easily create a wireless unidirectional communication link for embedded control applications. The receivers can also be combined with the company's existing rfPIC devices and KEELOQ® encoders to create remote sense and control applications.
Available in a 32-pin low-profile, quad-flat pack (LQFP), the rfRXD0420 and rfRXD0920 single-conversion superheterodyne UHF RF receivers support frequency bands of 300450 MHz and 850930 MHz respectively. The devices offer a maximum data rate of 80 kbits/s, a standby supply current of 100 nA, and operate over a voltage range of 2.5 V to 5.5 V. The active supply currents for the rfRXD0420 is 6.5 mA to 8.2 mA, depending on the low-noise amplifier (LNA) setting, and 7.5 mA to 9.2 mA for the rfRXD0920. The low operating and standby current extends battery life, and the flexible receiver topology allows for bandwidth optimization to improve system performance.
The rfPIC12F675 devices are 20-pin PICmicro® microcontrollers that feature an integrated UHF RF transmitter. The output power for the transmitter section is specified at 6 dBm for increased range, and is available in three frequency ranges: 260350 MHz (rfPIC12F675K), 390450 MHz (rfPIC12F675F), and 850930 MHz (rfPIC12F675H), with a maximum data rate of 40 kbits/s. A standby supply current of 100 nA and an operating voltage range of 2.0 V to 5.5 V make the devices suitable for low-power battery-operated applications.
The microcontrollers feature a 14-bit instruction set with 1.8K of flash program memory, 64 bytes RAM, and 128 bytes EEPROM for nonvolatile storage. Additional features include an analog comparator and four channels of 10-bit A/D conversion, making it easy to interface to a sensor for wireless sensor applications.
Target applications include remote control (home appliance, fan control, light control, PC peripherals); command and control (air conditioning thermostats, water irrigation system); wireless sensors (temperature, smoke detectors, water level); home security (garage-door openers, remote infrared sensors); and automotive (tire-pressure sensors, remote control, remote keyless entry RKE).
Pricing in 10,000-unit quantities is $2.55 each for the rfRXD0420 and rfRXD0920, and $2.03 for the rfPIC12F675. Samples are available today, and volume production is scheduled for June, 2003. For additional information or pricing on these devices, contact any Microchip sales representative or authorized worldwide distributor, or visit www.microchip.com.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.