MPY600

MPY600 BURR-BROWN | Alldatasheet

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Technical content

FEATURES

l WIDE BANDWIDTH: 75MHz — Current Output 30MHz — Voltage Output l LOW NOISE l LOW FEEDTHROUGH: –60dB (5MHz) l GROUND-REFERRED OUTPUT l LOW OFFSET VOLTAGE

APPLICATIONS

l VOLTAGE-CONTROLLED CIRCUITS

DESCRIPTION

The MPY600 is a wide-bandwidth four-quadrant signal multiplier. Its output voltage is equal to the algebraic product of the X and Y input voltages. For signals up to 30MHz, the on-board output op amp provides the complete multiplication function with a low-impedance voltage output. Differential current outputs extend multiplier bandwidth to 75MHz. The MPY600 offers improved performance compared to common semiconductor modulator or multiplier circuits. It can be used for both two-quadrant (voltage- controlled amplifier) and four-quadrant (double- balanced) applications. While previous devices required cumbersome circuitry for trimming, balance and level-shifting, the MPY600 requires no external components. A single external resistor can be used to program the conversion gain for optimum spurious- free dynamic range. When used as a modulator, carrier feedthrough measures –60dB at 5MHz. Differential X, Y and Z inputs can be connected in a variety of useful configurations, including squarer, divider, and square-rooter circuits. The MPY600 is available in 16-pin plastic DIP, specified for the indus- trial temperature range. Multiplier Core I = (X – X )(Y – Y ) mA R Y R Y Δ O1 2 1 2 VO I V Reference and Bias –VS+VS P IN V = A + Z – Z O 2 1 (X – X ) (Y – Y ) 12 1 2 [ ] FPO MPY600 International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1989 Burr-Brown Corporation PDS-1019C Printed in U.S.A. October, 1993

At VS = ±5V, TA = +25°C unless otherwise noted. MPY600AP SPECIFICATION CONDITIONS MIN TYP MAX UNITS INPUTS (X, Y, Z) Full-Scale Differential Input X1-X2 ±1V Y1-Y2 ±2V Z1-Z2 ±2V Input Voltage Range ±2.2 V Differential Input Range ±2.5 V Input Impedance 100 || 1.5 k Ω || pF Input Offset Voltage ±0.5 ±5m V Drift 25 µV/°C CMRR V CM = ±2V 70 dB PSRR 70 dB Input Bias Current (X, Y) +15 µA Z Input –15 µA VOLTAGE OUTPUT (X1–X2)(Y1–Y2) Transfer Function VO = ——————— + Z 2 V Total Multiplier Error(1) –1V ≤ X ≤ 1V, –2V ≤ Y ≤ 2V ±15 ±25 mV Gain Error ±1% Gain Temperature Drift ±200 ppm/ °C Power Supply Rejection V S = ±4 to ±6V 70 dB Noise f = 1kHz to 30MHz 120 nV/ Hz Output Voltage Swing R L = 100Ω± 2.2 ±3V Output Current ±22 ±30 mA Short-Circuit Limit 50 mA Bandwidth Small Signal 30 MHz Slew Rate 150 V/ µs Settling Time to 0.1% 4V Step 150 ns Differential Gain Error 3.58MHz, 0 to 0.7V 0.2 % Differential Phase Error 3.58MHz, 0 to 0.7V 0.2 Degrees Capacitive Load, Max Stable Operation 100 pF Feedthrough, X X = 0dBm, f = 500kHz; Y Nulled –65 dB X = 0dBm, f = 5MHz; Y Nulled –60 dB Feedthrough, Y Y = 0dBm, f = 500kHz; X Nulled –70 dB Y = 0dBm, f = 5MHz; X Nulled –50 dB Distortion, X X = 0dBm, f = 500kHz, Y = 2V –60 dB X = 0dBm, f = 5MHz, Y = 2V –55 dB Distortion, Y Y = 0dBm, f = 500kHz, X = 2V –65 dB Y = 0dBm, f = 5MHz, X = 2V –55 dB CURRENT OUTPUT Transfer Function ΔIO = (X1 – X2)( Y1 – Y2)/1000 A Total Multiplier Error(1) –1V ≤ X ≤ 1V, –2V ≤ Y ≤ 2V ±20 ±80 µA Gain Error ±1% Gain Temperature Drift ±200 ppm/ °C Power Supply Rejection V S = ±4 to ±6V 50 dB Noise, Output 100 pA/ √Hz Voltage Compliance Range ±2.5 V Peak Output Current 5m A Noise, Input-Referred f = 1kHz to 75MHz 50 nV/ √Hz Bandwidth, Small-Signal 75 MHz Settling Time to 0.1% 4mA Step 150 ns Feedthrough, X X = 0dBm, f = 1MHz; Y Nulled –65 dB X = 0dBm, f = 10MHz; Y Nulled –45 dB Feedthrough, Y Y = 0dBm, f = 1MHz; X Nulled –75 dB Y = 0dBm, f = 10MHz; X Nulled –55 dB Distortion, X X = 0dBm, f = 1MHz, Y = 2V –55 dB X = 0dBm, f = 10MHz, Y = 2V –50 dB Distortion, Y Y = 0dBm, f = 1MHz, X = 2V –65 dB Y = 0dBm, f = 10MHz, X = 2V –50 dB POWER SUPPLY Rated Performance ±5V Operating ±4.75 ±8V Current ±30 ±35 mA TEMPERATURE RANGE Specified Temperature Range –25 +85 °C Storage Temperature Range –40 +125 °C Thermal Resistance, θJ-A 50 °C/W NOTE: (1) Deviation from ideal transfer function referred to full scale output. Includes gain, nonlinearity and offset errors.

VOLTAGE OUTPUT PHASE SHIFT vs FREQUENCY 1k 10k 100k 1M 10M 100M 100 1.0 0.1 0.01 Phase Shift (Deg) Frequency (Hz) VOLTAGE OUTPUT FREQUENCY RESPONSE 10k 100k 1M 10M 100M Frequency (Hz) –10 –20 V / V (dB)OUT Y R = 0Y Ω R = 18Y Ω R = 50Y Ω R = 100Y Ω R = 200Y Ω R = 500Y Ω R = OpenY For X = 1V –10 –20 MULTIPLIER GAIN vs FREQUENCY 10k 100k 1M 10M 100M Frequency (Hz) Gain (dB) With 10x Feedback Attenuator C = 100pFL PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS

ORDERING INFORMATION

MPY600AP 16-Pin Plastic DIP –25 °C to +85°C

PACKAGE INFORMATION

MODEL PACKAGE NUMBER (1) MPY600AP 16-Pin Plastic DIP 180 NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. V Z Z Y R R Y I I NC X NC NC X O Y Y S P N S Voltage Output Z Input Z Input Y Input Y-Gain Adj. Y-Gain Adj. Y Input +V Power +Current Output –Current Output NC X Input NC NC X Input –V Power S S NC: No internal connection. Top View DIP TYPICAL PERFORMANCE CURVES TA = +25°C, VS = ±5V unless otherwise noted. NOISE FIGURE vs R RESISTANCEY 1 10 100 1000 10000 R Resistance ( )ΩY Noise Figure (dB) R = 50ΩS

–20 –40 –60 –80 –100 –60 –40–50 –30 –20 –10 0 10 20 CURRENT OUTPUT HARMONIC DISTORTION vs INPUT POWER Input Power (dBm) Distortion (dBc) f = 10MHz VOLTAGE OUTPUT HARMONIC DISTORTION vs FREQUENCY –30 –40 –50 –60 –70 –80 10k 100k 1M 10M 100M Frequency (Hz) Distortion (dBc) X = 1V Y = 0dBm CURRENT OUTPUT FEEDTHROUGH vs FREQUENCY 1M 10M 100M100k10k –20 –40 –60 –80 –100 Feedthrough (dBc) Frequency (Hz) X-Input Nulled Y-Input 0dBm Y-Input Nulled X-Input 0dBm Y- CHANNEL GAIN vs R RESISTANCEY 1 10 100 1k 10k R Resistance ( )Ω Y Gain: V / V (V/V)OY V = 1VX TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VS = ±5V unless otherwise noted. CURRENT OUTPUT HARMONIC DISTORTION vs FREQUENCY –30 –40 –50 –60 –70 –80 10k 100k 1M 10M 100M Frequency (Hz) Distortion (dBc) X = 1V Y = 0dBm 2f 3f VOLTAGE OUTPUT FEEDTHROUGH vs FREQUENCY 1M 10M 100M100k10k –20 –40 –60 –80 –100 Feedthrough (dBc) Frequency (Hz) X-Input Nulled Y-Input 0dBm Y-Input Nulled X-Input 0dBm

–20 10k 100k 1M 10M 100M Frequency (Hz) Gain: V /VOZ V = 0.02VDCY V = 0.2VDCY V = 2VDCY OUTPUT-REFERRED DYNAMIC RANGE vs INPUT POWER Input Power (dBm) Output Power (dBm) –20 –40 –60 –80 –100 –120 –100 –80 –60 –40 –20 0 20 40 Gain = 0dB 3rd Order IMD 1kHz Noise Floor 1dB Compresion pt 92dB R =Y ∞ OUTPUT-REFERRED DYNAMIC RANGE vs INPUT POWER Power In (dBm) Output Power (dBm) –20 –40 –60 –80 –100 –120 –120 –100 –80 –60 –40 –20 0 20 Gain = 30dB 3rd Order IMD 1kHz Noise Floor 1dB Compresion pt 84dB R = 0Y INPUT-REFERRED DYNAMIC RANGE vs INPUT POWER Input Power (dBm) Dynamic Range (dBc) –20 –40 –60 –80 –100 3rd Order IMD Intercept = –5dBm 1dB Compression pt = –13dBm 1kHz Noise Floor R = 0Y INPUT-REFERRED DYNAMIC RANGE vs INPUT POWER Input Power (dBm) Dynamic Range (dBc) –20 –40 –60 –80 –100 –100 –80 –60 –40 –20 0 20 40 Intercept = 37dBm 1dB Compression pt = 17dBm 1kHz Noise Floor 3rd Order IMP 3rd Order IMD R =Y ∞ –20 –40 –60 –80 –100 –60 –40–50 –30 –20 –10 0 10 20 VOLTAGE OUTPUT HARMONIC DISTORTION vs INPUT POWER Frequency (Hz) Distortion (dBc) f = 5MHz TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VS = ±5V unless otherwise noted.

APPLICATION INFORMATION

The MPY600 may be operated from power supplies from ±4.75V to ±8V. Operation from ±5V supplies is recom- mended. Since input and output levels are ±2V, larger supply voltage is not required for full output voltage swing. Furthermore, power dissipation can be minimized by using lower power supply voltage. Power supplies should be bypassed with good high-frequency capacitors such as ce- ramic or solid tantalum. TRANSFER FUNCTION The open-loop transfer function of the MPY600 is: where A = open-loop gain of the output amplifier (typically 70dB). X, Y, Z are differential input voltages— ±2V max. An intuitive understanding of the transfer function can be gained by analogy to an op amp. Assuming that the open- loop gain is infinite, any output voltage can be created by an infinitesimally small quantity with the brackets. An applica- tions circuit can be analyzed by assigning circuit voltages to the X, Y and Z inputs and setting the bracketed quantity equal to zero. TYPICAL PERFORMANCE CURVES (CONT) TA = +25°C, VS = ±5V unless otherwise noted. For example, in the basic multiplier connection (Figure 1), Z 1 = VO and Z2 = 0. Setting this equal to zero: Solving for VO yields the transfer function of the circuit. The X input is specified for ±1V full-scale differential input. X inputs up to ±2V provide useful operation with somewhat reduced accuracy and distortion performance. The Y input is rated for ±2V full-scale input. The Y input gain (and there- fore its full-scale range) can be varied with an external resistor connected to the R Y terminals—see “Modulator/ Demodulator.” Full-scale inputs (X = ±1V, Y = ±2V) pro- duce a ±1V output. The differential inputs, X1, X2, and Y1, Y2, make it easy to trim offset voltage. The trim voltage is applied to the X2 or Y 2 input, which is otherwise grounded (see X2 input, Figure 5). Polarity of the input signals can be reversed by inter- changing the inputs (reversing the connections X 1 and X2, for instance). The unused current outputs (pins 15 and 16) must be grounded (or loaded—see discussion on current outputs). The output amplifier is operated in unity gain. The output voltage can be increased (for small input signals) by placing the internal output op amp in higher gain (Figure 2). This reduces bandwidth and increases output offset voltage errors. 2V ±Z 1 ±Z 2() 2V ±V O  = 0 VOLTAGE OUTPUT SQUARER FREQUENCY RESPONSE 10k 100k 1M 10M 100M Frequency (Hz) –10 –15 –20 V / V (dB)OUT IN

FIGURE 15. CRT Geometry Correction. any BURR-BROWN product for use in life support devices and/or systems.