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| CT ODU at E PR546 T nter OLE HA-2 rt Ce m/tsc ppo l.co OBS See i al Su hnic w.inters c ur Te or ww act o IL cont INTERS 8881(R) HA-2547 September 1998 File Number 2862.3 100MHz, Two Quadrant, Current Output, Analog Multiplier The HA-2547 is a monolithic, high speed, two quadrant, analog multiplier constructed in Intersil's Dielectrically Isolated High Frequency Process. The high frequency performance of the HA-2547 rivals the best analog multipliers currently available including hybrids. The single-ended current output of the HA-2547 has a 100MHz signal bandwidth (RL = 50) and a 22MHz control input bandwidth. High bandwidth and low distortion make this part an ideal component in video systems. The suitability for precision video applications is demonstrated further by low multiplication error (1.6%), low feedthrough (-50dB), and differential inputs with low bias currents (1.2A). The HA-2547 is also well suited for mixer circuits as well as AGC applications for sonar, radar, and medical imaging equipment. The current output of the HA-2547 allows it to achieve higher bandwidths than voltage output multipliers. An internal feedback resistor is provided to give an accurate current-tovoltage conversion and is trimmed to give a full scale output voltage of 5V. The HA-2547 is not limited to multiplication applications only; frequency doubling and power detection are also possible. Features * * * * * Low Multiplication Error . . . . . . . . . . . . . . . . . . . . . . . 1.6% Input Bias Currents . . . . . . . . . . . . . . . . . . . . . . . . . 1.2A Signal Input Feedthrough at 5MHz . . . . . . . . . . . . . -50dB Wide Signal Bandwidth . . . . . . . . . . . . . . . . . . . . 100MHz Wide Control Bandwidth. . . . . . . . . . . . . . . . . . . . . 22MHz Applications * * * * * * * * Military Avionics Missile Guidance Systems Medical Imaging Displays Video Mixers Sonar AGC Processors Radar Signal Conditioning Voltage Controlled Amplifier Vector Generator HA-2547, (CERDIP) TOP VIEW GND VREF VYIOB 1 2 3 REF 16 GA A 15 GA C 14 GA B 13 VX+ X 12 VX11 V+ 10 RZ 9 NC Pinout Part Number Information PART NUMBER HA1-2547-5 HA1-2547-9 TEMP. RANGE ( oC) 0 to 75 -40 to 85 PACKAGE 16 Ld CERDIP 16 Ld CERDIP PKG. NO. F16.3 F16.3 VYIOA 4 VY+ VY5 6 V- 7 I OUT 8 Schematic V+ VBIAS VBIAS VOUT VX+ GA A + + VY+ VXGA C VREF + GA B RZ VY- - - VYIOA GND VYIOB V- 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2002. All Rights Reserved HA-2547 Absolute Maximum Ratings Voltage Between V+ and V- Terminals . . . . . . . . . . . . . . . . . . . 35V Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3mA Thermal Information Thermal Resistance (Typical, Note 1) JA ( oC/W) JC (oC/W) CERDIP Package. . . . . . . . . . . . . . . . . 75 20 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 175oC Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC Operating Conditions Temperature Range HA-2547-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC HA-2547-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 75oC CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 1. JA is measured with the component mounted on an evaluation PC board in free air. Electrical Specifications PARAMETER MULTIPLIER PERFORMANCE Multiplication Error (Note 2) VSUPPLY = 15V, RZ (Pin 10) Grounded, Unless Otherwise Specified. Pin 14 Connected to Pin 15 for Scale Factor = 2 TEST CONDITIONS TEMP. (oC) MIN TYP MAX UNITS 25 Full - 1.6 3.0 0.003 0.7 0.03 6 14 - 3 7 5 15 20 - %FS %FS %/oC % % mV mV V/oC Multiplication Error Drift Scale Factor Error THD+N Output Offset Voltage Note 3 VX = 0V, VY = 0V Full Full 25 25 Full Average Offset Voltage Drift SIGNAL INPUT, VY Input Offset Voltage Full 25 Full 5 60 4 8 35 7 10 0.7 1.0 720 2.5 100 -50 9 78 10 20 15 15 2 3 - mV mV V/oC A A A A k pF MHz dB V V dB Average Offset Voltage Drift Input Bias Current Full 25 Full Input Offset Current 25 Full Input Differential Resistance Input Capacitance Small Signal Bandwidth (-3dB) (Note 7) Feedthrough Differential Input Range Common Mode Range CMRR V Y TRANSIENT RESPONSE Rise Time Propagation Delay Note 12 Note 4 RL = 50 Note 10 25 25 25 25 25 25 Full 25 25 - 5 3 - ns ns 2 HA-2547 Electrical Specifications PARAMETER CONTROL INPUT, VX Input Offset Voltage 25 Full Average Offset Voltage Drift Input Bias Current Full 25 Full Input Offset Current 25 Full Input Capacitance Input Differential Resistance Small Signal Bandwidth (-3dB) (Note 7) Feedthrough Input Range (Note 9) Common Mode Range CMRR V X TRANSIENT RESPONSE Rise Time Propagation Delay OUTPUT CHARACTERISTICS Full Scale Output Voltage Full Scale Output Current (Note 8) Output Capacitance Output Resistance POWER SUPPLY PSRR ICC NOTES: 2. Error is percent of full scale, 1% = 50mV. 3. f = 10kHz, VY = 1VRMS , VX = 2V. 4. V Y = 0 to 5V, VX = 2V. 5. VX = 0 to 2V, VY = 5V. 6. V S = 12V to 15V, VY = 5V, VX = 2V. 7. Guaranteed by sample test and not 100% tested. 8. Output current tolerance is 20%. 9. Scale Factor = 2. See Applications Information. 10. f = 5MHz, VX = 0, VY = 200mVRMS . Relative to full scale output. 11. f = 5MHz, VY = 0, VX+ = 200mVRMS, VX- = -0.5V. Relative to full scale output. 12. V Y = 5V, VX = 2V, R L = 50. 13. V X = 0 to 2V, VY = 5V, RL = 50. Note 6 Full Full 58 63 20 29 dB mA VY = 5V, VX = 2.5V Full 25 25 25 6.25 2 6.5 4 V mA pF M Note 13 25 25 15 25 ns ns Note 5 RL = 50 Note 11 25 25 25 25 Full 25 25 +2 1 2 12 1.2 1.8 0.3 0.4 2.5 360 22 -40 9 75 2 20 2 5 2 3 mV mV V/oC A A A A pF k MHz dB V V dB VSUPPLY = 15V, RZ (Pin 10) Grounded, Unless Otherwise Specified. Pin 14 Connected to Pin 15 for Scale Factor = 2 (Continued) TEST CONDITIONS TEMP. (oC) MIN TYP MAX UNITS 3 HA-2547 Test Circuits and Waveforms 1 NC NC NC VY+ 2 3 4 5 6 -15V VOUT 7 8 50 X REF 16 15 14 13 12 11 10 9 +15V NC NC VX+ NC FIGURE 1. AC AND TRANSIENT RESPONSE TEST CIRCUIT +5V IN 0V -5V 2V IN 0V 100mV 100mV OUT 0V OUT 0V -100mV Horizontal Scale: 20ns/Div. VY TRANSIENT RESPONSE Horizontal Scale: 50ns/Div. VX TRANSIENT RESPONSE Application Information Theory of Operation The HA-2547 is a current output, two quadrant multiplier with one differential signal channel, VY+ and VY -, and one differential control channel, VX+ and VX-. Figure 2 shows a detailed functional block diagram of the HA-2547. The differential voltages of channels VX and VY are converted to differential currents. These differential currents are then multiplied in a circuit similar to a Gilbert Cell multiplier, producing a differential current product. The differential product currents are then converted to a single-ended output current which is typically 2mA, 20% at full scale (VX = 2V, VY = 5V). A trimmed internal scaling resistor, RZ, is designed to convert the output current to an accurate voltage by grounding RZ (pin 10). RZ is trimmed such that at full scale output current the voltage drop across RZ will be 5.0V. V+ VVYIOA VYIOB VY + MULTIPLIER CORE VX GA A 1.67K GA B GA C + + IOUT 2.5K STABLE REFERENCE AND BIAS VREF RZ FIGURE 2. 4 HA-2547 The transfer equation for the HA-2547 is: VOUT ( V X+ - V X- ) ( V Y+ - V Y- ) I OUT = --------------- = --------------------------------------------------------------- , where RZ SF x R Z The multiplication error is trimmed to be minimum at full scale, VX = 2V and VY = 5V. When VY = 5V, the worst case multiplication error occurs when VX 0.8V (Refer to typical performance curves). 1 2 3 4 VY 5 6 -15V 7 8 +15V VOUT -15V RL + + REF 16 15 14 13 12 11 10 9 +15V VX SF = Scale Factor RZ = 2.5kV (Internal) VX, VY = Differential Inputs The scale factor is used to maintain the output of the multiplier within the normal operating range of 5V. The scale factor can be defined by the user by way of an optional external resistor, REXT, and the Gain Adjust pins: Gain Adjust A (GA A), Gain Adjust B (GA B), and Gain Adjust C (GA C). The scale factor is determined as follows: SF = 2, when GA B is shorted to GA C SF (1.2)(R EXT), when REXT is connected between GA A and GA C (REXT is in k) SF (1.2)(R EXT + 1.667k), when REXT is connected to GA B and GA C (REXT is in k). The scale factor can be adjusted from 2 to 5. It should be noted that any adjustments to the scale factor will affect the AC performance of the control channel, VX. The normal input operating range of V X is equal to the scale factor value. A typical multiplier configuration is shown in Figure 3. The ideal transfer function for this configuration is shown below, illustrating two quadrant operation: ( VX+ - V X- ) ( V Y+ - V Y- ) V OU T = --------------------------------------------------------------- , 2 when ( V X+ - V X- ) 0 - - X + - FIGURE 3. Operation At Various Supply Voltages The HA-2547 will operate over a range of supply voltages, 8V to 15V. Use of supply voltages below 12V will cause degradation of electrical parameters. Offset Adjustment The signal channel offset voltage may be nulled by using a 20K potentiometer between VYIO Adjust pins A and B and connecting the wiper to V-. Reducing the signal channel offset voltage will reduce VX AC feedthrough and improve the multiplication error. V OU T = 0, when ( V X+ - VX- ) < 0 The VX- pin is usually connected to ground so that when VX+ is negative there is no signal at the output, i.e. two quadrant operation. If the VX input is a negative going signal the VX+ pin maybe grounded and the VX- pin used as the input. The VY- terminal is usually grounded allowing V Y+ to swing 5V. RZ is normally used as a feedback resistor for an external op amp to provide an accurate current-to-voltage conversion. The scale factor is normally set to 2 by connecting GA B to GA C. Therefore, the transfer function becomes: (V )(V ) X+ Y+ V OUT = --------------------------------2 5 HA-2547 Typical Performance Curves -30 GAIN (dB) -35 -40 GAIN (dB) PHASE SHIFT (DEGREES) -45 -50 PHASE 0 45 90 135 10K 100K 1M 10M FREQUENCY (Hz) 100M 180 VY = 200mVRMS , VX = 2V, RL = 50 GAIN VS = 15V, TA = 25oC VX+ = 100mVRMS ,VX --20-1V, VY = 5V, RL = 50 = GAIN -20 -25 -30 -40 -45 -50 -55 PHASE 0 45 90 135 10K 100K 1M FREQUENCY (Hz) 10M 180 100M FIGURE 4. V Y vs FREQUENCY FIGURE 5. V X vs FREQUENCY -15 -35 GAIN (dB) -55 VY = 200mVRMS , VX - = 0V, RL = 50 -25 -35 GAIN (dB) -45 -55 -65 -75 -85 VX+ = 200mVRMS , VX- = 0.5V, VY = 0V, RL = 50 -75 -95 -115 -135 10K 100K 1M FREQUENCY (Hz) 10M 100M 10K 100K 1M FREQUENCY (Hz) 10M 100M FIGURE 6. VY FEEDTHROUGH vs FREQUENCY FIGURE 7. VX FEEDTHROUGH vs FREQUENCY -30 -35 -40 GAIN (dB) -45 -50 -55 -60 -65 VY = 200mVRMS , RL = 50 VX = 2V VX = 1V GAIN (dB) VX = 0.5V VX = 0.25V -20 -25 -30 -35 -40 -45 -50 -55 VX+ = 100mVRMS , VX- = -1V, RL = 50 VY = 5V VY = 2V VY = 1V VY = 0.5V VY = 0.25V 10K 100K 1M FREQUENCY (Hz) 10M 100M 10K 100K 1M FREQUENCY (Hz) 10M 100M FIGURE 8. VARIOUS V Y FREQUENCY RESPONSES FIGURE 9. VARIOUS VX FREQUENCY RESPONSES 6 PHASE SHIFT (DEGREES) -35 HA-2547 Typical Performance Curves 8 PEAK OUTPUT VOLTAGE SWING (V) VS = 15V, TA = 25oC (Continued) 10 6 OFFSET VOLTAGE (mV) VOUT 6 2 4 VX -2 VY 2 -6 0 -55 -25 0 25 50 75 TEMPERATURE (oC) 100 125 -10 -55 -25 0 25 50 75 100 125 TEMPERATURE (oC) FIGURE 10. OUTPUT VOLTAGE SWING vs TEMPERATURE FIGURE 11. OFFSET VOLTAGE vs TEMPERATURE 15 10 2.0 1.0 CURRENT (A) CURRENT (A) 5 0 OFFSET CURRENT -5 -10 -15 -55 BIAS CURRENT BIAS CURRENT OFFSET CURRENT 0 -1.0 -25 0 25 50 75 100 125 TEMPERATURE (oC) -2.0 -55 -25 0 25 50 75 100 125 TEMPERATURE (oC) FIGURE 12. V Y OFFSET/BIAS CURRENT vs TEMPERATURE FIGURE 13. V X OFFSET/BIAS CURRENT vs TEMPERATURE 100 CONTROL 80 SIGNAL CMRR (dB) PSRR (dB) 60 100 +PSRR 80 60 -PSRR 40 40 20 20 0 -55 -25 0 25 50 75 100 125 TEMPERATURE (oC) 0 -55 -25 0 25 50 75 TEMPERATURE (oC) 100 125 FIGURE 14. SIGNAL/CONTROL CMRR vs TEMPERATURE FIGURE 15. PSRR vs TEMPERATURE 7 HA-2547 Typical Performance Curves 25 VS = 15V, TA = 25oC (Continued) 2.05 2.04 SUPPLY CURRENT (mA) 2.03 SCALE FACTOR 50 75 100 125 -ICC 20 +ICC 2.02 2.01 2.00 1.99 1.98 1.97 1.96 15 -55 -25 0 25 1.95 -55 -25 0 25 50 75 100 125 TEMPERATURE (oC) TEMPERATURE (oC) FIGURE 16. ICC vs TEMPERATURE FIGURE 17. SCALE FACTOR vs TEMPERATURE 1.8 1.4 1.3 MULTIPLICATION ERROR (%) 75 100 125 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -55 WORST CASE ERROR (%) 1.6 1.4 ERROR 1.2 1.0 0.8 -55 -25 0 25 50 -25 0 TEMPERATURE (oC) 25 50 75 TEMPERATURE (oC) 100 125 FIGURE 18. WORST CASE MULTIPLICATION ERROR vs TEMPERATURE FIGURE 19. MULTIPLICATION ERROR vs TEMPERATURE 2.0 MULTIPLICATION ERROR (%) 1.8 1.6 NOISE VOLTAGE (nV/Hz) 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 VY = +5V VY = -5V 975 900 825 750 675 600 525 450 375 300 225 150 75 0 1 VX = 0, VY = 0 10 100 1K 10K 100K VX VOLTAGE (V) FREQUENCY (Hz) FIGURE 20. MULTIPLICATION ERROR vs VX FIGURE 21. VOLTAGE NOISE DENSITY 8 |
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