AD734 Datasheet | Analog Devices

FEATURES High accuracy 0.1% typical error High speed 10 MHz full power bandwidth 450 V/μs slew rate 200 ns settling to 0.1% at full power Low distortion - 80 d Bc from any input Third-order IMD typically - 75 d Bc at 10 MHz Low noise 94 d B SNR, 10 Hz to 20 k Hz 70 d B SNR, 10 Hz to 10 MHz Direct division mode 2 MHz BW at gain of 100 APPLICATIONS High performance replacement for AD534 Multiply, divide, square, square root Modulators, demodulators Wideband gain control, rms-to-dc conversion Voltage-controlled amplifiers, oscillators, and filters Demodulator with 40 MHz input bandwidth GENERAL DESCRIPTION The AD734 is an accurate high speed, four-quadrant analog multiplier that is pin patible with the industry-standard AD534 and provides the transfer function W = XY/U. The AD734 provides a low impedance voltage output with a full power (20 V p-p) bandwidth of 10 MHz. Total static error (scaling, offsets, and nonlinearities bined) is 0.1% of full scale. Distortion is typically less than - 80 d Bc and guaranteed. The low capacitance X, Y, and Z inputs are fully differential. In most applications, no external ponents are required to define the function. The internal scaling (denominator) voltage, U, is 10 V, derived from a buried-Zener voltage reference. A new feature provides the option of substituting an external denominator voltage, allowing the use of the AD734 as a two-quadrant divider with a 1000:1 denominator range and a signal bandwidth that remains 10 MHz, Four-Quadrant Multiplier/Divider AD734 FUNCTIONAL BLOCK DIAGRAM X1 XIF X2 X = X1 - X2 HIGH ACCURACY TRANSLINEAR CORE U0 DENOMINATOR U CONTROL XZ U + XY ÷ U - Z WIF - W U1 ER AO ∞ RU U2 Y1 YIF Y2 Y = Y1 - Y2 Z = Z1 - Z2 ZIF Z1 Z2 Figure...