AD840JN

AD840 AD | Alldatasheet

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REV. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Wideband, Fast Settling Op Amp AD840 Tel: 617/329-4700 Fax: 617/326-8703 CONNECTION DIAGRAMSFEATURES Wideband AC Performance Gain Bandwidth Product: 400 MHz (Gain ≥ 10) Fast Settling: 100 ns to 0.01% for a 10 V Step Slew Rate: 400 V/ ms Stable at Gains of 10 or Greater Full Power Bandwidth: 6.4 MHz for 20 V p-p into a

500 V Load

Input Offset Voltage: 0.3 mV max Input Offset Drift: 3 mV/8C typ Input Voltage Noise: 4 nV/ √ Hz Open-Loop Gain: 130 V/mV into a 1 k V Load Output Current: 50 mA min Supply Current: 12 mA max

APPLICATIONS

Video and Pulse Amplifiers DAC and ADC Buffers Line Drivers Available in 14-Pin Plastic DIP, Hermetic Cerdip and 20-Pin LCC Packages and in Chip Form MIL-STD-883B Processing Available PRODUCT DESCRIPTION The AD840 is a member of the Analog Devices’ family of wide bandwidth operational amplifiers. This high speed/high precision family includes, among others, the AD841, which is unity- gain stable, and the AD842, which is stable at a gain of two or greater and has 100 mA minimum output current drive. These devices are fabricated using Analog Devices’ junction isolated complementary bipolar (CB) process. This process permits a combination of dc precision and wideband ac performance previously unobtainable in a monolithic op amp. In addition to its 400 MHz gain bandwidth product, the AD840 offers extremely fast settling characteristics, typically settling to within 0.01% of final value in 100 ns for a 10 volt step. The AD840 remains stable over its full operating temperature range at closed-loop gains of 10 or greater. It also offers a low quiescent current of 12 mA maximum, a minimum output current drive capability of 50 mA, a low input voltage noise of 4 nV/√ Hz and a low input offset voltage of 0.3 mV maximum (AD840K). The 400 V/µs slew rate of the AD840, along with its 400 MHz gain bandwidth, ensures excellent performance in video and pulse amplifier applications. This amplifier is ideally suited for use in high frequency signal conditioning circuits and wide bandwidth active filters. The extremely rapid settling time of the AD840 makes it the preferred choice for data acquisition appli- cations which require 12-bit accuracy. The AD840 is also ap- propriate for other applications such as high speed DAC and ADC buffer amplifiers and other wide bandwidth circuitry. APPLICATION HIGHLIGHTS 1. The high slew rate and fast settling time of the AD840 make it ideal for DAC and ADC buffers, line drivers and all types of video instrumentation circuitry. 2. The AD840 is truly a precision amplifier. It offers 12-bit accuracy to 0.01% or better and wide bandwidth, perfor- mance previously available only in hybrids. 3. The AD840’s thermally balanced layout and the high speed of the CB process allow the AD840 to settle to 0.01% in 100 ns without the long “tails” that occur with other fast op amps. 4. Laser wafer trimming reduces the input offset voltage to 0.3 mV max on the K grade, thus eliminating the need for external offset nulling in many applications. Offset null pins are provided for additional versatility. 5. Full differential inputs provide outstanding performance in all standard high frequency op amp applications where circuit gain will be 10 or greater. 6. The AD840 is an enhanced replacement for the HA2540. Plastic DIP (N) Package and Cerdip (Q) Package LCC (E) Package

AD840–SPECIFICATIONS Model AD840J AD840K AD840S Conditions Min Typ Max Min Typ Max Min Typ Max Units INPUT OFFSET VOLTAGE 1 0.2 1 0.1 0.3 0.2 1 mV TMIN–TMAX 1.5 0.7 2m V Offset Drift 5 3 5 µV/°C INPUT BIAS CURRENT 3.5 8 3.5 5 3.5 8 µA TMIN–TMAX 10 6 12 µA TMIN–TMAX 0.5 0.3 0.6 µA INPUT CHARACTERISTICS Differential Mode Input Resistance 30 30 30 k Ω Input Capacitance 2 2 2 pF INPUT VOLTAGE RANGE Common Mode 610 12 610 12 ± 10 12 V Common-Mode Rejection V CM = ± 10 V 90 110 106 115 90 110 dB TMIN–TMAX 85 90 85 dB INPUT VOLTAGE NOISE f = 1 kHz 4 4 4 nV/ √Hz Wideband Noise 10 Hz to 10 MHz 10 10 10 µV rms OPEN-LOOP GAIN V O = ± 10 V RLOAD = 1 kΩ 100 130 100 130 100 130 V/mV TMIN–TMAX 50 80 75 100 50 80 V/mV RLOAD = 500 Ω 75 100 75 V/mV TMIN–TMAX 50 75 50 V/mV OUTPUT CHARACTERISTICS Voltage R LOAD ≥ 500 Ω TMIN–TMAX 610 610 610 V Current V OUT = ± 10 V 50 50 50 mA Output Resistance Open Loop 15 15 15 Ω FREQUENCY RESPONSE Gain Bandwidth Product V OUT = 90 mV p-p AV = –10 400 400 400 MHz Full Power Bandwidth 2 VO = 20 V p-p Rise Time A V = –10 10 10 10 ns Overshoot3 AV = –10 20 20 20 % Slew Rate3 AV = –10 350 400 350 400 350 400 V/ µs Settling Time3 – 10 V Step A V = –10 to 0.1% 80 80 80 ns to 0.01% 100 100 100 ns OVERDRIVE RECOVERY –Overdrive 190 190 190 ns +Overdrive 350 350 350 ns DIFFERENTIAL GAIN f = 4.4 MHz 0.025 0.025 0.025 % DIFFERENTIAL PHASE f = 4.4 MHz 0.04 0.04 0.04 Degree POWER SUPPLY Rated Performance ± 15 ± 15 ± 15 V Operating Range 65 618 65 618 65 618 V Quiescent Current 12 14 12 14 12 14 mA T MIN–TMAX 16 16 18 mA Power Supply Rejection Ratio V S = ± 5 V to ± 18 V 90 100 94 100 90 100 dB TMIN–TMAX 80 86 80 dB TEMPERATURE RANGE Rated Performance 4 0 +75 0 +75 –55 +125 °C TRANSISTOR COUNT # of Transistors 72 72 72 REV. C–2– (@ +258C and 615 V dc, unless otherwise noted)

1Input offset voltage specifications are guaranteed after 5 minutes at T A = +25°C. 2Full power bandwidth = slew rate/2 π VPEAK. 3Refer to Figures 22 and 23. 4“S” grade TMIN–TMAX specifications are tested with automatic test equipment at T A = –55°C and TA = +125°C. All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units. Specifications subject to change without notice. AD840 REV. C –3– ABSOLUTE MAXIMUM RATINGS 1 Internal Power Dissipation 2 S Storage Temperature Range NOTES 1Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. 2Maximum internal power dissipation is specified so that T J does not exceed +175°C at an ambient temperature of +25 °C. Thermal Characteristics: θJC θJA Derate at Cerdip Package 30 °C/W 110 °C/W 8.7 mW/ °C Plastic Package 30 °C/W 100 °C/T 10 mW/ °C Recommended Heat Sink: Aavid Engineering© #602B ORDERING GUIDE Models Package Options 2 AD840JN N-14 AD840KN N-14 AD840JQ Q-14 AD840KQ Q-14 AD840SQ Q-14 AD840SQ-883B Q-14 5962-89640012A Q-14 AD840SE-883B E-20A 5962-8964001CA E-20A NOTES 1J and S Grade Chips also available. 2N = Plastic DIP; Q = Cerdip; E = LCC (Leadless 2Ceramic Chip Carrier). Plastic DIP (N) Package and Cerdip (Q) Package LCC (E) Package AD840 Connection Diagrams METALIZATION PHOTOGRAPH Contact factory for latest dimensions. Dimensions shown in inches and (mm).