High Speed, Low Power a Monolithic Op Amp AD848/AD849 FEATURES CONNECTION DIAGRAMS 725 MHz Gain Bandwidth AD849 Plastic (N), 175 MHz Gain Bandwidth AD848 Small Outline (R) and 4.8 mA Supply Current Cerdip (Q) Packages 300 V/ms Slew Rate 80 ns Settling Time to 0.1% for a 10 V Step AD849 AD848/49 1 8 NULL NULL Differential Gain: AD848 = 0.07%, AD849 = 0.08% 2 7 IN +V S Differential Phase: AD848 = 0.088, AD849 = 0.048 3 6 +IN OUTPUT Drives Capacitive Loads 4 TOP VIEW 5 V NC S (Not to Scale) DC PERFORMANCE NC = NO CONNECT 3 nV/Hz Input Voltage Noise AD849 85 V/mV Open Loop Gain into a 1 kV Load AD849 1 mV max Input Offset Voltage 20-Terminal LCC Pinout Performance Specified for 65 V and 615 V Operation Available in Plastic, Hermetic Cerdip and Small Outline Packages. Chips and MIL-STD-883B Parts Available. Available in Tape and Reel in Accordance with 18 17 16 15 14 EIA-481A Standard NC 19 13 NC APPLICATIONS OFFSET 20 12 NC Cable Drivers NULL AD848SE/883B NC 1 TOP VIEW 11 NC 8- and 10-Bit Data Acquisition Systems (Not to Scale) OFFSET 2 10 V Video and R Amplification F NULL Signal Generators NC 3 9 NC 4 5 6 78 PRODUCT DESCRIPTION NC = NO CONNECT The AD848 and AD849 are high speed, low power monolithic operational amplifiers. The AD848 is internally compensated so APPLICATIONS HIGHLIGHTS that it is stable for closed loop gains of 5 or greater. The AD849 1. The high slew rate and fast settling time of the AD848 and is fully decompensated and is stable at gains greater than 24. AD849 make them ideal for video instrumentation circuitry, The AD848 and AD849 achieve their combination of fast ac low noise pre-amps and line drivers. and good dc performance by utilizing Analog Devices junction 2. In order to meet the needs of both video and data acquisition isolated complementary bipolar (CB) process. This process applications, the AD848 and AD849 are optimized and enables these op amps to achieve their high speed while only tested for 5 V and 15 V power supply operation. requiring 4.8 mA of current from the power supplies. 3. Both amplifiers offer full power bandwidth greater than The AD848 and AD849 are members of Analog Devices family 20 MHz (for 2 V p-p with 5 V supplies). of high speed op amps. This family includes, among others, the AD847 which is unity gain stable, with a gain bandwidth of 4. The AD848 and AD849 remain stable when driving any 50 MHz. For more demanding applications, the AD840, capacitive load. AD841 and AD842 offer even greater precision and greater 5. Laser wafer trimming reduces the input offset voltage to output current drive. 1 mV maximum on all grades, thus eliminating the need for The AD848 and AD849 have good dc performance. When external offset nulling in many applications. operating with 5 V supplies, they offer open loop gains of 6. The AD848 is an enhanced replacement for the LM6164 13 V/mV (AD848 with a 500 load) and low input offset series and can function as a pin-for-pin replacement for voltage of 1 mV maximum. Common-mode rejection is a many high speed amplifiers such as the HA2520/2/5 and minimum of 92 dB. Output voltage swing is 3 V even into EL2020 in applications where the gain is 5 or greater. loads as low as 150 . REV. B 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 617/326-8703 NC NC IN V+ NC NC +IN OUTPUT NC NCAD848/AD849SPECIFICATIONS ( T = +258C, unless otherwise noted) A AD848J AD848A/S Model Conditions V Min Typ Max Min Typ Max Units S 1 INPUT OFFSET VOLTAGE 5 V 0.2 1 0.2 1 mV 15 V 0.5 2.3 0.5 2.3 mV T to T 5 V 1.5 2 mV MIN MAX 15 V 3.0 3.5 mV Offset Drift 5 V, 15 V 7 7 V/C INPUT BIAS CURRENT 5 V, 15 V 3.3 6.6 3.3 6.6/5 A T to T 5 V, 15 V 7.2 7.5 A MIN MAX INPUT OFFSET CURRENT 5 V, 15 V 50 300 50 300 nA T to T 5 V, 15 V 400 400 nA MIN MAX Offset Current Drift 5 V, 15 V 0.3 0.3 nA/C OPEN LOOP GAIN V = 2.5 V 5V O R = 500 9 13 9 13 V/mV LOAD T to T 7 7/5 V/mV MIN MAX R = 150 8 8 V/mV LOAD V = 10 V 15 V OUT R = 1 k 12 20 12 20 V/mV LOAD T to T 8 8/6 V/mV MIN MAX DYNAMIC PERFORMANCE Gain Bandwidth A 5 5 V 125 125 MHz VCL 15 V 175 175 MHz 2 Full Power Bandwidth V = 2 V p-p, O R = 5005 V 24 24 MHz L V = 20 V p-p, O R = 1 k15 V 4.7 4.7 MHz L Slew Rate 5 V 200 200 V/s R = 1 k15 V 225 300 225 300 V/s LOAD Settling Time to 0.1% 2.5 V to +2.5 V 5 V 65 65 ns 10 V Step, A = 4 15 V 100 100 ns V Phase Margin C = 10 pF 15 V LOAD R = 1 k 60 60 Degrees LOAD DIFFERENTIAL GAIN f = 4.4 MHz 15 V 0.07 0.07 % DIFFERENTIAL PHASE f = 4.4 MHz 15 V 0.08 0.08 Degree COMMON-MODE REJECTION V = 2.5 V 5 V 92 105 92 105 dB CM V = 12 V 15 V 92 105 92 105 dB CM T to T 88 88 dB MIN MAX POWER SUPPLY REJECTION V = 4.5 V to 18 V 85 98 85 98 dB S T to T 80 80 dB MIN MAX INPUT VOLTAGE NOISE f = 10 kHz 15 V 5 5 nV/Hz INPUT CURRENT NOISE f = 10 kHz 15 V 1.5 1.5 pA/Hz INPUT COMMON-MODE VOLTAGE RANGE 5 V +4.3 +4.3 V 3.4 3.4 V 15 V +14.3 +14.3 V 13.4 13.4 V OUTPUT VOLTAGE SWING R = 5005 V 3.0 3.6 3.0 3.6 V LOAD R = 1505V 2.5 3 2.5 3 V LOAD R = 505 V 1.4 1.4 V LOAD R = 1 k15 V 12 12 V LOAD R = 500 15 V 10 10 V LOAD SHORT CIRCUIT CURRENT 15 V 32 32 mA INPUT RESISTANCE 70 70 k INPUT CAPACITANCE 1.5 1.5 pF OUTPUT RESISTANCE Open Loop 15 15 POWER SUPPLY Operating Range 64.5 618 64.5 618 V Quiescent Current 5 V 4.8 6.0 4.8 6.0 mA T to T 7.4 7.4/8.3 mA MIN MAX 15 V 5.1 6.8 5.1 6.8 mA T to T 8.0 8.0/9.0 mA MIN MAX NOTES 1 Input offset voltage specifications are guaranteed after 5 minutes at T = +25C. A 2 Full power bandwidth = slew rate/2 V . Refer to Figure 1. PEAK All min and max specifications are guaranteed. Specifications in boldface are tested on all production units at final electrical test. All others are guaranteed but not necessarily tested. Specifications subject to change without notice. 2 REV. B