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| 型號： | 66F4946 |
| 英文描述： | IC-MONOLITHIC OP AMPLIFIER |
| 中文描述： | 集成電路單片運算放大器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 259K |
| 代理商： | 66F4946 |
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
otherwise under any patent or patent rights of Analog Devices.
a
AD848/AD849
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
Hgh Speed, LowPower
Monolithic Op Amp
FEATURES
725 MHz Gain Bandwidth – AD849
175 MHz Gain Bandwidth – AD848
4.8 mA Supply Current
300 V/
m
s Slew Rate
80 ns Settling Time to 0.1% for a 10 V Step – AD849
Differential Gain: AD848 = 0.07%, AD849 = 0.08%
Differential Phase: AD848 = 0.08
8
, AD849 = 0.04
8
Drives Capacitive Loads
DC PERFORMANCE
3 nV/
√
Hz
Input Voltage Noise – AD849
85 V/mV Open Loop Gain into a 1 k
V
Load – AD849
1 mV max Input Offset Voltage
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
EIA-481A Standard
APPLICATIONS
Cable Drivers
8- and 10-Bit Data Acquisition Systems
Video and R
F
Amplification
Signal Generators
PRODUCT DE SCRIPT ION
T he AD848 and AD849 are high speed, low power monolithic
operational amplifiers. T he AD848 is internally compensated so
that it is stable for closed loop gains of 5 or greater. T he AD849
is fully decompensated and is stable at gains greater than 24.
T he AD848 and AD849 achieve their combination of fast ac
and good dc performance by utilizing Analog Devices’ junction
isolated complementary bipolar (CB) process. T his process
enables these op amps to achieve their high speed while only
requiring 4.8 mA of current from the power supplies.
T he AD848 and AD849 are members of Analog Devices’ family
of high speed op amps. T his family includes, among others, the
AD847 which is unity gain stable, with a gain bandwidth of
50 MHz. For more demanding applications, the AD840,
AD841 and AD842 offer even greater precision and greater
output current drive.
T he AD848 and AD849 have good dc performance. When
operating with
±
5 V supplies, they offer open loop gains of
13 V/mV (AD848 with a 500
load) and low input offset
voltage of 1 mV maximum. Common-mode rejection is a
minimum of 92 dB. Output voltage swing is
±
3 V even into
loads as low as 150
.
APPLICAT IONS HIGHLIGHT S
1. T he 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.
2. In order to meet the needs of both video and data acquisition
applications, the AD848 and AD849 are optimized and
tested for
±
5 V and
±
15 V power supply operation.
3. Both amplifiers offer full power bandwidth greater than
20 MHz (for 2 V p-p with
±
5 V supplies).
4. T he AD848 and AD849 remain stable when driving any
capacitive load.
5. Laser wafer trimming reduces the input offset voltage to
1 mV maximum on all grades, thus eliminating the need for
external offset nulling in many applications.
6. T he 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.
CONNE CT ION DIAGRAMS
Plastic (N),
Small Outline (R) and
Cerdip (Q) Packages
1
2
3
4
8
7
6
5
(TOP VIEW
NC = NO CONNECT
NULL
NC
OUTPUT
+V
S
NULL
–IN
+IN
–V
S
AD848/49
20-T erminal LCC Pinout
NC = NO CONNECT
NC
NC
NC
OFFSET
NULL
N
V
N
N
N
–
N
N
+
NC
NC
NC
NC
V–
14
18
16
17
15
19
20
3
1
2
7
8
4
6
5
13
12
9
11
10
TOP VIEW
(Not to Scale)
AD848SE/883B
OFFSET
NULL
O
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