AD834:  500 MHz Four-Quadrant Multiplier

The AD834 is a monolithic laser-trimmed four-quadrant analog multiplier intended for use in high frequency applications, having a transconductance bandwidth (RL=50 Ohm) in excess of 500 ...More

AD834:  500 MHz Four-Quadrant Multiplier

Product Description

The AD834 is a monolithic laser-trimmed four-quadrant analog multiplier intended for use in high frequency applications, having a transconductance bandwidth (RL=50 Ohm) in excess of 500 MHz from either of the differential voltage inputs. In multiplier modes, the typical total full scale error is 0.5%, dependent on the application mode and the external circuitry. Performance is relatively insensitive to temperature and supply variations, due to the use of stable biasing based on a bandgap reference generator and other design features.

To preserve the full bandwidth potential of the high speed bipolar process used to fabricate the AD834, the outputs appear as a differential pair of currents at open collectors. To provide a single ended ground referenced voltage output, some form of external current to voltage conversion is needed. This may take the form of a wideband transformer, balun, or active circuitry such as an op amp. In some applications (such as power measurement) the subsequent signal processing may not need to have a high bandwidth.

The transfer function is accurately trimmed such that when X=Y=±1V, the differential output is ±4mA. This absolute calibration allows the outputs of two or more AD834s to be summed with precisely equal weighting, independent of the accuracy of the load circuit.

The AD834J is specified for use over the commercial temperature range of 0° to +70°C and is available in an 8-pin plastic DIP package and an 8-pin plastic SOIC package. AD834A is available in cerdip for operation over the industrial temperature range of -40° C to +85° C. The AD834S/883B is specified for operation over the military temperature range of -55°C to +125°C and is available in the 8-pin cerdip package. S-Grade chips are also available.

Two application notes featuring the AD834 (AN-212 and AN-216) can now be obtained by calling 1-800-ANALOG-D. For additional applications circuits, consult the AD811 data sheet.

Features

  • DC to >500 MHz Operation
  • Differential ±1 V Full-Scale Output Current
  • Low Distortion (less than or equal to 0.05% for 0 dBm Input)
  • Differential ±4 mA Full-Scale Inputs
  • Supply Voltages from ±4 V to ±9 V
  • Low Power (280 mW
    Typical at Vs = ±5 V)

Diagrams

AD834 Diagram
Functional Block Diagram for AD834

Характеристики

Transfer Function (4mA)*XY/(1V^2)
Supply Voltage (V max) ±9V
Supply Current (max) 35mA
Temp Range -40 to 85°C
Package DIP/SOIC

Посмотреть другие компоненты

Part# Transfer Function BW Slew Rate (V/µs Supply Voltage (V max) Supply Current (max) Error (%FS@25°C) Settling Time Output Swing Input Voltage Range (V) Temp Range Price* (1000-4999)
AD532 (X1-X2)(Y1-Y2)/(10V) 1MHz 45 ±22 6 1 1µs ± 10V ±10 -55 to 125°C $16.95
AD534 (X1-X2)(Y1-Y2)/(10V)+Z2 1MHz 20 ±22 6 0.25 2µs ± 11V ±10 -55 to 125°C $17.77
AD538 Vy(Vz/Vx)^m 400kHz 1.4 ±18 7 1 - ± 11V ±10 -55 to 125°C $17.26
AD539 -VxVy/Vu 25MHz - ±15 10.2 2.5 - ± 2.8mA ±4.2 -55 to 125°C $18.99
AD632 [(X1–X2)(Y1–Y2)/10] + Z2 1MHz 20 ±22 6 0.5 2µs ± 11V ±12 -55 to 125°C $12.45
AD633 [(X1–X2)(Y1–Y2)/10] + Z 1MHz 20 ±18 6 2 2µs ± 11V ±10 -40 to 85°C $4.15
AD734 [(X1–X2)(Y1–Y2)/U] + Z2 10MHz 450 ±16.5 12 0.4 200ns 12V ±12.5 -55 to 125°C $14.02
AD834 (4mA)*XY/(1V^2) 500MHz - ±9 35 2 - ± 4.04mA ±1 -40 to 85°C $17.71
AD835 [(X1–X2)(Y1–Y2)/U] + Z2 250MHz 1,000 ±5.5 25 2 20ns ± 2.5V ±1 -40 to 85°C $9.91
ADL5391 W= aXY/U+Z 2000MHz 8,800 +5.5 135 1 2.1ns Vpos-2.5 V +2.5 -40 to 85°C $4.95
MLT04 [(X1–X2)(Y1–Y2)/2.5V] 8MHz 53 ±5.25 20 5 1µs ± 3V ±2.5 -40 to 85°C -

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.