High frequency operational amplifier

Transcription

1 DESCRIPTION The is a very wide bandwidth, high slew rate, monolithic operational amplifier for use in video amplifiers, RF amplifiers, and extremely high slew rate amplifiers. PIN CONFIGURATION D, F, N Packages Emitter-follower inputs provide a true differential input impedance device. Proper external compensation will allow design operation over a wide range of closed-loop gains, both inverting and non-inverting, to meet specific design requirements. + INPUT -V SUPPLY INPUT FREQUEY COMPENS. 4 FEATURES Bandwidth Unity gain - 50MHz Full power - 48MHz GBW -.2GHz at 7dB Slew rate: 600/Vµs A VOL : 52dB typical Low noise - 4nV Hz typical MIL-STD processing available APPLICATIONS High speed datacom Video monitors & TV V OS ADJ / A V ADJ GROUND Top View Satellite communications Image processing RF instrumentation & oscillators Magnetic storage Military communications V OUTPUT ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 4-Pin Plastic Dual In-Line Package (DIP) 0 to +70 C NE559N 0405B 4-Pin Plastic Small Outline (SO) package 0 to +70 C NE559D 0D 4-Pin Ceramic Dual In-Line Package 0 to +70 C NE559F 058B 4-Pin Ceramic Dual In-Line Package -55 to +25 C SE559F 058B ABSOLUTE MAIMUM RATINGS SYMBOL PARAMETER RATING UNITS V CC Supply voltage ±2 V P DMA T A Maximum power dissipation, T A = 25 C (still-air) 2 F package N package D package Operating temperature range NE SE to to +25 T STG Storage temperature range -65 to +50 C T J Max junction temperature 50 C T SOLD Lead soldering temperature (0sec max) +00 C NOTES:. Differential input voltage should not exceed 0.25V to prevent excesive input bias current and common-mode voltage 2.5V. These voltage limits may be exceeded if current is limited to less than 0mA. 2. Derate above 25 C, at the following rates: F package at 9.mW/ C N package at.6mw/ C D package at 7.9mW/ C W W W C C April 5,

2 EQUIVALENT CIRCUIT (2) FREQUEY COMP. (0) +V CC R 8 R 9 R R 5 ( ) 4 INVERTING INPUT (+) NON INVERTING INPUT Q R 2 Q 4 Q R 6 6 R 8 Q 5 Q 2 Q R 20 R R 4 R 2 Q 7 Q 8 R 9 R 0 2.2k (8) OUTPUT (7) GRD R Q 9 R Q 0 R 2 R 4 Q R 5 R 6 R 7 R 7 5 () V CC DC ELECTRICAL CHARACTERISTICS V CC = ±8V, T A = 25 C; unless otherwise specified. SE559 NE559 MIN TYP MA MIN TYP MA UNITS V Over temp 2 5 OS Input offset voltage V O = 0V, R S = 00Ω mv TA = 25 C I OS I B CMRR V OS / T 5 5 µv/ C Input offset current Over temp 0. T A = 25 C 0. 2 I OS / T na/ C Input bias current Over temp 6 25 T A = 25 C I B / T 0 0 na/ C Common mode rejection ratio F = khz, R S = 00Ω, V CM ±.7V Over temp R IN Input impedance kω R OUT Output impedance 0 0 Ω µa µa db April 5,

3 DC ELECTRICAL CHARACTERISTICS (Continued) V CC = ±8V, T A = 25 C; unless otherwise specified. V OUT V OUT I CC+ I CC- PSRR A VOL A VOL A VOL Output voltage swing Output voltage swing Positive supply current Negative supply current Power supply rejection ratio Large signal voltage gain Large signal voltage gain Large signal voltage gain R L = 50Ω to GND and 470Ω to -V CC R L = 25Ω to GND Over temp R L = 25Ω to GND T A = 25 C +Swing -Swing +Swing -Swing +Swing -Swing SE559 NE559 MIN TYP MA MIN TYP MA UNITS V O = 0, R =, Over temp V O = 0, R =, T A = 25 C V O = 0, R =, Over temp 5 V O = 0, R =, T A = 25 C 4 5 V CC = ±V, Over temp V CC = ±V, T A = 25 C V V ma ma µv/v V O = +2.V, -.7V, R L = 50Ω to GND, 470Ω to -V CC db V O = +2.V, -.7V Over temp R L = 2Ω to GND T A = 25 C V O = +2.5V, -2.0V Over temp R L = 2Ω to GND T A = 25 C db db DC ELECTRICAL CHARACTERISTICS V CC = ±6V, T A = 25 C; unless otherwise specified. V OS I OS I B Input offset voltage Input offset current Input bias current SE559 MIN TYP MA UNITS Over temp 2 5 T A = 25 C 2 Over temp 0. T A = 25 C 0. Over temp 5 20 T A = 25 C 4 0 CMRR Common-mode rejection ratio V CM = ±.V, R S = 00Ω db I CC+ I CC- Positive supply current Negative supply current PSRR Power supply rejection ratio V CC = ±V V OUT Output voltage swing Over temp 4 T A = 25 C Over temp 8 T A = 25 CmA 8 0 Over temp T A = 25 C Over +Swing R L = 50Ω to GND temp Swing..7 and 90Ω to V CC T A = +Swing C Swing.4.8 mv µa µa ma ma µv/v V April 5, 992 2

4 AC ELECTRICAL CHARACTERISTICS V CC = ±8V, R L = 50Ω to GND and 470Ω to -V CC, unless otherwise specified. SE559 NE559 MIN TYP MA MIN TYP MA BW Gain bandwidth product A CL = 7, V O = 0. V P-P MHz Small signal bandwidth A CL = 2, R L = 50Ω 0 0 MHz t S Settling time A CL = 2, R L = 50Ω 5 5 ns SR Slew rate A CL = 2, R L = 50Ω V/µs t PD Propagation delay A CL = 2, R L = 50Ω 7 7 ns Full power response A CL = 2, R L = 50Ω MHz Full power response A V = 7, R L = 50Ω MHz UNITS Input noise voltage R S = 50Ω, MHz 4 4 nv/ Hz Input noise current MHz 6 6 pa/ Hz NOTES:. External compensation. AC ELECTRICAL CHARACTERISTICS V CC = ±6V, R L = 50Ω to GND and 90Ω to -V CC, unless otherwise specified. BW SE559 MIN TYP MA Gain bandwidth product A CL = Small signal bandwidth A CL = 2 20 t S Settling time A CL = 2 2 ns SR Slew rate A CL = 2 0 V/µs t PD Propagation delay A CL = ns Full power response A CL = 2 20 MHz NOTES:. External compensation. UNITS MHz TYPICAL PERFORMAE CURVES NE559 Open-Loop Phase 60 NE559 Open-Loop Gain 0 50 PHASE (DEG) GAIN (db) MHz 0MHz 00MHz GHz FREQUEY (Hz) 0 MHz 0MHz 00MHz GHz FREQUEY (Hz) April 5,

5 TYPICAL PERFORMAE CURVES (Continued) Power Bandwidth (SE) Power Bandwidth (NE) 5 4 p p OUTPUT (V) 4 2 GAIN ( 2) V CC = +8V R L = 2kΩ db B.W MHz 0MHz 00MHz 00Mhz FREQUEY (Hz) p p OUTPUT (V) 2 V CC = +6V R L = 50kΩ GAIN ( 2) db B.W. 0 MHz 0MHz 00MHz 00Mhz FREQUEY (Hz) SE559 Open-Loop Gain vs Frequency Power Bandwidth 50 REF.04V P-P GAIN (db) V CC = +6V R L = 26Ω 0 o MHz 0MHz 00MHz 00Mhz FREQUEY (Hz) db BELOW REF GAIN ( 7) 0 R L = 50Ω 2 MHz 0MHz 00MHz FREQUEY (Hz) 00MHz SE559 Open-Loop Phase vs Frequency Gain Bandwidth Product vs Frequency PHASE (DEG) V CC = ±6V R L = 26Ω 80 MHz 0MHz 00MHz FREQUEY (Hz) 00MHz GAIN (db) A V = 0 V CC = ±6V A V = 7.5 db BANDWIDTH db BANDWIDTH 2 MHz 0MHz 00MHz FREQUEY (Hz) R L = 50Ω 00MHz NOTE: Indicates typical distribution 55 C T A 25 C April 5, 992 2

6 CIRCUIT LAYOUT CONSIDERATIONS As may be expected for an ultra-high frequency, wide-gain bandwidth amplifier, the physical circuit is extremely critical. Bread-boarding is not recommended. A double-sided copper-clad printed circuit board will result in more favorable system operation. An example utilizing a 28dB non-inverting amp is shown in Figure. OPTIONAL OFFSET ADJ. +V V R 5 R F +V nf R 4 R 4 NE559 7 RFC 0 8 nf 470 R V OUT Ω TERM V IN + R 6 R 2 RFC nf nf R = Ω 5% CARBON R 2 = Ω 5% CARBON R = Ω 5% CARBON R 4 = 6K 5% CARBON R 5 = 20k TRIMPOT (CERMET) R F =.5k (28dB GAIN) R 6 = 470Ω 5% CARBON RFC T # 26 BUSS WIRE ON FERROCUBE VK /B CORE BYPASS CAPACITORS nf CERAMIC (MEPCO OR EQUIV.) Top Plane Copper (Component Side) Component Side (Component Layout) Bottom Plane Copper R 5 RFC R 2 V IN () R 6 R 4 R +V C C RFC R F R 5 Figure. 28dB Non-Inverting Amp Sample PC Layout April 5,

7 NE559 COLOR VIDEO AMPLIFIER The NE559 wideband operational amplifier is easily adapted for use as a color video amplifier. A typical circuit is shown in Figure 2 along with vector-scope photographs showing the amplifier differential gain and phase response to a standard five-step modulated staircase linearity signal (Figures, 4 and 5). As can be seen in Figure 4, the gain varies less than 0.5% from the bottom to the top of the staircase. The maximum differential phase shown in Figure 5 is approximately +0.. The amplifier circuit was optimized for a Ω input and output termionation impedance with a gain of approximately 0 (20dB). NOTE:. The input signal was 200mV and the output 2V. V CC was ±8V. 0 22nF V IN dB LOSS Z O = Ω 22nF Figure 2. NE559 Video Amplifier Figure. Input Signal Figure 4. Differential Gain <0.5% NOTE: Instruments used for these measurements were Tektronix 46 NTSC test signal generator, 520A NTSC vectorscope, and 480 waveform monitor. April 5,

8 Figure 5. Differential Gain +0. o +2V 8V Z IN = 500 Ω pF 4 + NE Z O = 50 Ω K 2K C LEAD.5pF Figure 6. Non-Inverting Follower +8V 8V K pF 4 + NE K.pF Figure 7. Inverting Follower April 5,