Plessey Misc ICs
SL650 Modulator
The SL650 is capable of performing a variety of modulation functions. A variable frequency oscillator is programmable by voltage, current or resistor.
SL6270C VOGAD
The SL6270 is an audio amplifier with voice operated gain and a dynamic range of 50dB, fast attack time and a temperature range from -30 to 85°C
SL6440 Active Mixer
The SL6440 is an active, double balanced, high-level mixer with programmable gain and +30dBm of intercept point; the maximum frequency is 150 MHz
SP1648 ECL Oscillator
The SP1648 is a VHF oscillator with compatible ECL outputs; the tank circuit consists of a varactor and an inductor
SP5055 Synthesiser
The SP5055 is a single chip frequency synthesiser designed for TV tuning systems and input frequency of 2.5GHz; controls are via bi-directional IIC bus
SP705 Crystal Oscillator
The SP705 is a monolithic square wave oscillator designed for use with AT-cut quartz crystal, typical drive level is 0.15mW, and load capacitance is 14pF
SP9768 DAC
The SP9768 is an high-speed DAC (digital to analog converter) with settling time of five nanoseconds, current output, and 50-ohm drive capability
SP9770 DAC
The SP9770B is a 10-bit DAC with 12nsec settling time. The chip includes a high-performance voltage reference and reference amplifier.
ZN427 8-BIT DAC
The ZN427 is an 8-bit DAC with 10µsec settling time. The chip includes a high-performance voltage reference and utilises successive approximation tecnique.