AD539: Wideband Dual-Channel Linear Multiplier/Divider

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 3dB bandwidth of over 60MHz are provided. Although intended primarily for applications where speed is importanct 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 (Ohms). Output voltage is restricted to a few hundred millivolts under these conditions. Using external op amps such as the AD5539 in conjuction with the on-chip scaling resistors, accurate multiplication can be achieved, with bandwidths typically as high as 50 MHz.

The two channels provide flexibility. In single-channel applications they may be used in parallel, to double the output current, or series, to achieve a square law gain function with a control range or over 100dB, or differentially, to reduce distortion. Alternatively, they may 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 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 DIP (D) or a low cost plastic DIP (N), while the S grade is available in ceramic DIP (D) or LCC (E). J-grade chips are also available. The S grade is now available in MIL-STD-883 and Standard Military Drawing (DESC) Number 5962-8980901EA versions.

AD539 特点

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

AD539 功能框图

AD539 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
5962-8980901EA	量产	16 ld Side-Brazed CerDip	16	军用
AD539JD	量产	16 ld Side-Brazed CerDip	16	商业
AD539JDZ	量产	16 ld Side-Brazed CerDip	16	商业
AD539JN	量产	16 ld PDIP	16	商业
AD539JNZ	量产	16 ld PDIP	16	商业
AD539KD	量产	16 ld Side-Brazed CerDip	16	商业
AD539KDZ	量产	16 ld Side-Brazed CerDip	16	商业
AD539KN	量产	16 ld PDIP	16	商业
AD539KNZ	量产	16 ld PDIP	16	商业
AD539SD	量产	16 ld Side-Brazed CerDip	16	军用
AD539SD/883B	量产	16 ld Side-Brazed CerDip	16	军用
AD539SE/883B	量产	20 ld LCC	20	军用