Datasheet AD848, AD849 (Analog Devices)

a
High Speed, Low Power 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/
m
s Slew Rate 80 ns Settling Time to 0.1% for a 10 V Step – AD849 AD848/49 NULL 1 8 Differential Gain: AD848 = 0.07%, AD849 = 0.08% NULL Differential Phase: AD848 = 0.08
8
, AD849 = 0.04
8
–IN 2 7 +VS Drives Capacitive Loads +IN 3 6 OUTPUT –V 4 TOP VIEW 5 NC S DC PERFORMANCE (Not to Scale) 3 nV/
√
Hz Input Voltage Noise – AD849 NC = NO CONNECT 85 V/mV Open Loop Gain into a 1 k
V
Load – AD849 1 mV max Input Offset Voltage 20-Terminal LCC Pinout Performance Specified for
6
5 V and
6
15 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 NC V+ NC OUTPUT NC EIA-481A Standard 18 17 16 15 14 APPLICATIONS NC 19 13 NC OFFSET Cable Drivers 20 12 NC NULL AD848SE/883B 8- and 10-Bit Data Acquisition Systems NC 1 TOP VIEW 11 NC (Not to Scale) Video and R OFFSET 2 10 V– F Amplification NULL Signal Generators NC 3 9 NC 4 5 6 7 8 PRODUCT DESCRIPTION NC –IN NC +IN NC
The AD848 and AD849 are high speed, low power monolithic
NC = NO CONNECT
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 isolated complementary bipolar (CB) process. This process 2. In order to meet the needs of both video and data acquisition enables these op amps to achieve their high speed while only applications, the AD848 and AD849 are optimized and requiring 4.8 mA of current from the power supplies. tested for ± 5 V and ± 15 V power supply operation. The AD848 and AD849 are members of Analog Devices’ family 3. Both amplifiers offer full power bandwidth greater than of high speed op amps. This family includes, among others, the 20 MHz (for 2 V p-p with ± 5 V supplies). 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 output current drive. 5. Laser wafer trimming reduces the input offset voltage to 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 13 V/mV (AD848 with a 500 Ω load) and low input offset 6. The AD848 is an enhanced replacement for the LM6164 voltage of 1 mV maximum. Common-mode rejection is a series and can function as a pin-for-pin replacement for minimum of 92 dB. Output voltage swing is ± 3 V even into many high speed amplifiers such as the HA2520/2/5 and loads as low as 150 Ω. EL2020 in applications where the gain is 5 or greater. 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 which may result from its use. No license is granted by implication or
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