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AD847AADN/a68avaiHigh Speed, Low Power Monolithic Op Amp
AD848AQADN/a4530avaiHigh Speed, Low Power Monolithic Op Amp
AD848JNADN/a85avaiHigh Speed, Low Power Monolithic Op Amp
AD848JR2ADN/a4avaiHigh Speed, Low Power Monolithic Op Amp
AD848SQADN/a4300avaiHigh Speed, Low Power Monolithic Op Amp
AD848SQ. |AD848SQADN/a38avaiHigh Speed, Low Power Monolithic Op Amp
AD848SQ/883B |AD848SQ883BADN/a5120avaiHigh Speed, Low Power Monolithic Op Amp
AD849AQN/a2avaiHigh Speed, Low Power Monolithic Op Amp
AD849JRADIN/a4avaiHigh Speed, Low Power Monolithic Op Amp
AD849SQADN/a4avaiHigh Speed, Low Power Monolithic Op Amp


AD848SQ/883B ,High Speed, Low Power Monolithic Op AmpAPPLICATIONS HIGHLIGHTSthat it is stable for closed loop gains of 5 or greater. The AD8491. The hig ..
AD849AQ ,High Speed, Low Power Monolithic Op AmpSpecifications subject to change without notice.–2– REV. BAD848/AD849AD849J AD849A/SModel Condition ..
AD849JR ,High Speed, Low Power Monolithic Op AmpFEATURESCONNECTION DIAGRAMS725 MHz Gain Bandwidth – AD849Plastic (N),175 MHz Gain Bandwidth – AD848 ..
AD849SQ ,High Speed, Low Power Monolithic Op AmpAPPLICATIONSOFFSET20 12 NCCable Drivers NULL AD848SE/883BNC 1 TOP VIEW 11 NC8- and 10-Bit Data Acqu ..
AD8509ARU ,9- and 11-Channel, Muxed Input LCD Reference DriversCHARACTERISTICSOutput Voltage High V I = +20 mA 4.8 VOH LOADOutput Voltage Low V I = –20 mA 200 mVO ..
AD8509ARU ,9- and 11-Channel, Muxed Input LCD Reference DriversSpecifications subject to change without notice.ABSOLUTE MAXIMUM RATINGS* ORDERING GUIDESupply Volt ..
ADP3607AR-REEL ,50 mA Switched Capacitor Voltage Boost with Regulated OutputSpecifications subject to change without notice.1ABSOLUTE MAXIMUM RATINGSORDERING GUIDE(T = +25

AD847A-AD848AQ-AD848JN-AD848JR2-AD848SQ-AD848SQ.-AD848SQ/883B-AD849AQ-AD849JR-AD849SQ
High Speed, Low Power Monolithic Op Amp
REV.B
High Speed, Low Power
Monolithic Op Amp
FEATURES
725MHz Gain Bandwidth – AD849
175MHz Gain Bandwidth – AD848
4.8mA Supply Current
300V/ms Slew Ratens Settling Time to 0.1% for a 10V Step – AD849
Differential Gain:AD848 = 0.07%, AD849 = 0.08%
Differential Phase:AD848 = 0.088, AD849 = 0.048
Drives Capacitive Loads
DC PERFORMANCEnV/√Hz Input Voltage Noise – AD849V/mV Open Loop Gain into a 1kV Load – AD849mV max Input Offset Voltage
Performance Specified for 65V and 615V 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
EIA-481A Standard
APPLICATIONS
Cable Drivers
8- and 10-Bit Data Acquisition Systems
Video and RF Amplification
Signal Generators
PRODUCT DESCRIPTION

The AD848 and AD849 are high speed, low power monolithic
operational amplifiers. The AD848 is internally compensated so
that it is stable for closed loop gains of 5 or greater. The AD849
is fully decompensated and is stable at gains greater than 24.
The AD848 and AD849 achieve their combination of fast ac
and good dc performance by utilizing Analog Devices’ junction
isolated complementary bipolar (CB) process. This process
enables these op amps to achieve their high speed while only
requiring 4.8mA of current from the power supplies.
The AD848 and AD849 are members of Analog Devices’ family
of high speed op amps. This family includes, among others, the
AD847 which is unity gain stable, with a gain bandwidth ofMHz. For more demanding applications, the AD840,
AD841 and AD842 offer even greater precision and greater
output current drive.
The AD848 and AD849 have good dc performance. When
operating with ±5V supplies, they offer open loop gains ofV/mV (AD848 with a 500Ω load) and low input offset
voltage of 1mV maximum. Common-mode rejection is a
minimum of 92dB. Output voltage swing is ±3V even into
loads as low as 150Ω.
APPLICATIONS HIGHLIGHTS
The high slew rate and fast settling time of the AD848 and
AD849 make them ideal for video instrumentation circuitry,
low noise pre-amps and line drivers.In order to meet the needs of both video and data acquisition
applications, the AD848 and AD849 are optimized and
tested for ±5V and ±15V power supply operation.Both amplifiers offer full power bandwidth greater thanMHz (for 2V p-p with ±5V supplies).The AD848 and AD849 remain stable when driving any
capacitive load.Laser wafer trimming reduces the input offset voltage tomV maximum on all grades, thus eliminating the need for
external offset nulling in many applications.The AD848 is an enhanced replacement for the LM6164
series and can function as a pin-for-pin replacement for
many high speed amplifiers such as the HA2520/2/5 and
EL2020 in applications where the gain is 5 or greater.
CONNECTION DIAGRAMS
Plastic (N),
Small Outline (R) and
Cerdip (Q) Packages
20-Terminal LCC Pinout
AD848/AD849–SPECIFICATIONS
(@ TA = +258C, unless otherwise noted)
OUTPUT VOLTAGE SWING
POWER SUPPLY
AD848/AD849
AD848/AD849
ABSOLUTE MAXIMUM RATINGS1

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Internal Power Dissipation2
Plastic (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Watts
Small Outline (R) . . . . . . . . . . . . . . . . . . . . . . . . . 0.9 Watts
Cerdip (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Watts
LCC (E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 Watts
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ±6 V
Storage Temperature Range (Q) . . . . . . . . –65°C to +150°C
(N, R) . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +175°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . +300°C
NOTESStresses above those listed under “Absolute Maximum Ratings” may cause per-
manent damage to the device. This is a stress rating only, and functional opera-
tion 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.LCC: θJA = 150°C/Watt
Mini-DIP Package: θJA = 110°C/Watt
Cerdip Package: θJA = 110°C/Watt
Small Outline Package: θJA = 155°C/Watt.
METALIZATION PHOTOGRAPH

Contact factory for latest dimensions. (AD848 and AD849 are identical
except for the part number in the upper right.)
Dimensions shown in inches and (mm).
ORDERING GUIDE

AD848JCHIPS
AD848AQ
AD848SQ
AD848SQ/883B
AD848SE/883B
AD849JN
AD849JR
AD849AQ
AD849SQ
AD849SQ/883B
NOTESE = LCC; N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC).Plastic SOIC (R) available in tape and reel. AD848 available in S grade chips. AD849 available in J and S grade
chips.
Figure 1.AD848 Inverting Amplifier Configuration
Figure 1a.AD848 Large Signal Pulse Response
Figure 1b.AD848 Small Signal Pulse Response
OFFSET NULLING

The input voltage of the AD848 and AD849 are very low for
high speed op amps, but if additional nulling is required, the
circuit shown in Figure 3 can be used.
For high performance circuits it is recommended that a resistor
(RB in Figures 1 and 2) be used to reduce bias current errors by
matching the impedance at each input. The offset voltage error
caused by the input currents is decreased by more than an order
of magnitude.
Figure 2.AD849 Inverting Amplifier Configuration
Figure 2a.AD849 Large Signal Pulse Response
Figure 2b.AD849 Small Signal Pulse Response
Figure 3.Offset Nulling
Figure 4.Quiescent Current vs.
Supply Voltage (AD848 and AD849)
Figure 7. Open Loop Gain vs.
Load Resistance (AD848)
Figure 10. Quiescent Current vs.
Temperature (AD848 and AD849)
AD848/AD849–Typical Characteristics
(@ TA = +258C and VS = 615V, unless otherwise noted)

Figure 5.Large Signal Frequency
Response (AD848 and AD849)
Figure 8. Open Loop Gain vs.
Load Resistance (AD849)
Figure 11. Short Circuit Current
Limit vs. Temperature (AD848
and AD849)
Figure 6.Output Voltage Swing vs.
Load Resistance (AD848 and AD849)
Figure 9.Output Swing and
Error vs. Settling Time (AD848)
Figure 12.Input Bias Current vs.
Temperature (AD848 and AD849)
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