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Balanced Modulators/
Demodulators
These devices were designed for use where the output voltage is a
product of an input voltage (signal) and a switching function (carrier).
Typical applications include suppressed carrier and amplitude
modulation, synchronous detection, FM detection, phase detection,
and chopper applications. See ON Semiconductor Application Note
AN531 for additional design information.
Features
• Excellent Carrier Suppression −65 dB typ @ 0.5 MHz
−50 dB typ @ 10 MHz
• Adjustable Gain and Signal Handling
• Balanced Inputs and Outputs
• High Common Mode Rejection −85 dB Typical
• This Device Contains 8 Active Transistors
• Pb−Free Package is Available*
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These products are complete two-chip modems designed for quick network access for devices with limited data transmission requirements. The below ISOmodem products utilize Silicon Laboratories' proprietary silicon DAA and support caller ID detection and decode and parallel handset intrusion detection.
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The MT8840 is a carrier over voice modem which allows simultaneous transfer of voice and data over a single pair of wires. Data is transferred on an amplitude shift keyed (ASK) 32 kHz carrier. On-chip filters remove voice frequency signals from the received composite voice and data signal prior to demodulation. The modulating signal is a bit stream with a typical data rate of 2 kbps. In addition, the device contains a two tone warbler which functions as a telephone ringer. The device is fabricated in Zarlink's double-poly ISO2-CMOS technology utilizing switched-capacitor techniques.
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Increased capacity of NAND-type Flash Memory has opened the door to new and exciting applications requiring higher speed boot
sequences, easier controllability, etc. all in a compact system. GBDriver RA4 is TDK’s answer. TDK’s pioneering technology is condensed
into an ultra small VFBGA package for controlling NAND-type Flash Memory, with a far strengthened ECC, defect block management,
ware leveling and power-off management.
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The FX604 is a low power CMOS integrated circuit for the reception of transmission of asynchronous 1200bits/ sec data in accordance with CCITT V.23 and ETSI specifications. It is also capable of generating the 75bits/ sec 'back channel'.
The device incorporates an optional Tx and Rx data retiming function that removes the need for a UART in the associated C when operating at 1200bits/ sec. The device can disable the back channel or be operated so only the mark or space tone is produced. An optional line equaliser is incorporated into the receive path, this is controlled by an external logic level.
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* Different versions: Universal modulator, Intensity modulator (P) with thin film polarizer, Phase modulator (PHAS)
* With 4 crystals in order of compensation
* Connectors: 4 mm banana plugs
* Different versions for wavelength ranges between 250 to 1100 nm
* Other specifications or modifications on request
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JDSU offers a broad portfolio of lithium niobate modulators for telecommunications, CATV, and specialty applications. X- and Z-cut, RZ and NRZ, zero-chirp and extended reach, bias free, and bias ready models are available in butterfly and miniature package styles.
The modulators are paired with fixed wavelength or tunable lasers in high performance applications, including metro core and long haul telecom. Unlike directly modulated lasers, the modulators control optical phase as well as amplitude. They are required components in systems using higher order modulation formats incorporating phase shift keying.
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| ... products without technical information |
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JDSU offers a broad portfolio of lithium niobate modulators for telecommunications, CATV, and specialty applications. X- and Z-cut, RZ and NRZ, zero-chirp and extended reach, bias free, and bias ready models are available in butterfly and miniature package styles.
The modulators are paired with fixed wavelength or tunable lasers in high performance applications, including metro core and long haul telecom. Unlike directly modulated lasers, the modulators control optical phase as well as amplitude. They are required components in systems using higher order modulation formats incorporating phase shift keying.
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| ... products without technical information |
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