Product Details
●The AD539 is a low distortion analog multiplier having two identical signal channels (Y1 and Y2), with a common X input providing linear control of gain. Excellent ac characteristics up to video frequencies and a −3 dB bandwidth of over 60 MHz are provided. Although intended primarily for applications where speed is important, the circuit exhibits good static accuracy in computational applications. Scaling is accurately determined by a band-gap voltage reference and all critical parameters are laser-trimmed during manufacture.
●The full bandwidth can be realized over most of the gain range using the AD539 with simple resistive loads of up to 100 Ω. Output voltage is restricted to a few hundred millivolts under these conditions.
●The two channels provide flexibility. In single-channel applications, they can be used in parallel to double the output current, in series to achieve a square-law gain function with a control range of over 100 dB, or differentially to reduce distortion. Alternatively, they can be used independently, as in audio stereo applications, with low crosstalk between channels. Voltage-controlled filters and oscillators using the state-variable approach are easily designed, taking advantage of the dual channels and common control. The AD539 can also be configured as a divider with signal bandwidths up to 15 MHz.
●Power consumption is only 135 mW using the recommended ±5 V supplies. The AD539 is available in three versions: the J and K grades are specified for 0 to 70°C operation and S grade is guaranteed over the extended range of −55°C to +125°C. The J and K grades are available in either a hermetic ceramic SBDIP (D-16) or a low cost PDIP (N-16), whereas the S grade is available in ceramic SBDIP (D-16) or LCC (E-20-1). The S grade is availa¬ble in MIL-STD-883 and Standard Military Drawing (DESC) Number 5962-8980901EA versions.
● APPLICATIONS
● Precise high bandwidth AGC and VCA systems
● Voltage-controlled filters
● Video signal processing
● High speed analog division
● Automatic signal-leveling
● Square-law gain/loss control
●### Features and Benefits
● Two Quadrant Multiplication/Division
● Two Independent Signal Channels
● Signal Bandwidth of 60 MHz (IOUT)
● Linear Control Channel Bandwidth of 5 MHz
● Low Distortion (to 0.01%)
● Fully-Calibrated, Monolithic Circuit
