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PDF LT1363 Data sheet ( Hoja de datos )
| Número de pieza | LT1363 | |
| Descripción | 70MHz/ 1000V/us Op Amp | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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FEATURES
s 70MHz Gain Bandwidth
s 1000V/µs Slew Rate
s 7.5mA Maximum Supply Current
s 9nV/√Hz Input Noise Voltage
s Unity-Gain Stable
s C-LoadTM Op Amp Drives All Capacitive Loads
s 1.5mV Maximum Input Offset Voltage
s 2µA Maximum Input Bias Current
s 350nA Maximum Input Offset Current
s 50mA Minimum Output Current
s ±7.5V Minimum Output Swing into 150Ω
s 4.5V/mV Minimum DC Gain, RL=1k
s 50ns Settling Time to 0.1%, 10V Step
s 0.06% Differential Gain, AV=2, RL=150Ω
s 0.04° Differential Phase, AV=2, RL=150Ω
s Specified at ±2.5V, ±5V, and ±15V
U
APPLICATIO S
s Wideband Amplifiers
s Buffers
s Active Filters
s Video and RF Amplification
s Cable Drivers
s Data Acquisition Systems
TYPICAL APPLICATIO
Cable Driver Frequency Response
2
0 VS = ±15V
VS = ± 2.5V
–2 VS = ± 5V
VS = ±10V
–4 IN +
LT1363
–
–6 510Ω
75Ω OUT
75Ω
510Ω
–8
1
10
FREQUENCY (MHz)
100
1363 TA01
LT1363
70MHz, 1000V/µs Op Amp
DESCRIPTIO
The LT1363 is a high speed, very high slew rate opera-
tional amplifier with excellent DC performance. The LT1363
features reduced supply current, lower input offset volt-
age, lower input bias current and higher DC gain than
devices with comparable bandwidth. The circuit topology
is a voltage feedback amplifier with the slewing character-
istics of a current feedback amplifier. The amplifier is a
single gain stage with outstanding settling characteristics
which makes the circuit an ideal choice for data acquisition
systems. The output drives a 150Ω load to ±7.5V with
±15V supplies and to ±3.4V on ±5V supplies. The amplifier
is also capable of driving any capacitive load which makes
it useful in buffer or cable driver applications.
The LT1363 is a member of a family of fast, high perfor-
mance amplifiers using this unique topology and
employing Linear Technology Corporation’s advanced
bipolar complementary processing. For dual and quad
amplifier versions of the LT1363 see the LT1364/1365
data sheet. For 50MHz amplifiers with 4mA of supply
current per amplifier see the LT1360 and LT1361/1362
data sheets. For lower supply current amplifiers with
bandwidths of 12MHz and 25MHz see the LT1354 through
LT1359 data sheets. Singles, duals, and quads of each
amplifier are available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
C-Load is a trademark of Linear Technology Corporation
AV = –1 Large-Signal Response
1363 TA02
1
1 page  
LT1363
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Differential inputs of ±10V are appropriate for transient operation
only, such as during slewing. Large, sustained differential inputs will cause
excessive power dissipation and may damage the part. See Input
Considerations in the Applications Information section of this data sheet
for more details.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: Input offset voltage is pulse tested and is exclusive of warm-up drift.
Note 5: Slew rate is measured between ±10V on the output with ±6V input
for ±15V supplies and ±2V on the output with ±1.75V input for ±5V supplies.
Note 6: Full power bandwidth is calculated from the slew rate
measurement: FPBW = SR/2πVP.
Note 7: This parameter is not 100% tested.
Note 8: The LT1363C is guaranteed functional over the operating
temperature range of –40°C to 85°C.
Note 9: The LT1363C is guaranteed to meet specified performance from
0°C to 70°C. The LT1363C is designed, characterized and expected to
meet specified performance from – 40°C to 85°C, but is not tested or QA
sampled at these temperatures. For guaranteed I-grade parts, consult the
factory.
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Supply Voltage
and Temperature
10
8
125°C
25°C
6
– 55°C
4
2
0
0 5 10 15 20
SUPPLY VOLTAGE (±V)
1363 G01
Input Bias Current vs
Temperature
1.4
1.2
VS =
IB =
±15V
—IB—+ +—IB—–
2
1.0
0.8
0.6
0.4
0.2
0
– 50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1363 G04
Input Common Mode Range vs
Supply Voltage
V+
– 0.5
TA = 25°C
∆VOS < 1mV
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
V–
0
5 10 15
SUPPLY VOLTAGE (±V)
20
1363 G02
Input Noise Spectral Density
100
VS = ±15V
TA = 25°C
AV = 101
RS = 100k
in
10
en
10
1
1 0.1
10 100 1k 10k 100k
FREQUENCY (Hz)
1363 G05
Input Bias Current vs
Input Common Mode Voltage
1.0
VS = ±15V
0.8
TA =
IB =
25°C
—IB+—+—IB—–
2
0.6
0.4
0.2
–15 –10 –5
0
5 10 15
INPUT COMMON MODE VOLTAGE (V)
1363 G03
Open-Loop Gain vs
Resistive Load
85
TA = 25°C
80
VS = ±15V
75
VS = ±5V
70
65
60
10
100 1k
LOAD RESISTANCE (Ω)
10k
1363 G06
5
5 Page 
LT1363
APPLICATIONS INFORMATION
The RC network across the output stage is bootstrapped
when the amplifier is driving a light or moderate load and
has no effect under normal operation. When driving a
capacitive load (or a low value resistive load) the network
is incompletely bootstrapped and adds to the compensa-
tion at the high impedance node. The added capacitance
slows down the amplifier which improves the phase
margin by moving the unity-gain frequency away from the
pole formed by the output impedance and the capacitive
load. The zero created by the RC combination adds phase
to ensure that even for very large load capacitances, the
total phase lag can never exceed 180 degrees (zero phase
margin) and the amplifier remains stable.
Comparison to Current Feedback Amplifiers
The LT1363 enjoys the high slew rates of Current Feed-
back Amplifiers (CFAs) while maintaining the characteris-
tics of a true voltage feedback amplifier. The primary
differences are that the LT1363 has two high impedance
inputs and its closed loop bandwidth decreases as the gain
increases. CFAs have a low impedance inverting input and
maintain relatively constant bandwidth with increasing
gain. The LT1363 can be used in all traditional op amp
configurations including integrators and applications such
as photodiode amplifiers and I-to-V converters where
there may be significant capacitance on the inverting
input. The frequency compensation is internal and not
dependent on the value of the feedback resistor. For CFAs,
the feedback resistance is fixed for a given bandwidth and
capacitance on the inverting input can cause peaking or
oscillations. The slew rate of the LT1363 in noninverting
gain configurations is also superior in most cases.
SI PLIFIED SCHE ATIC
V+
R1
500Ω
+IN RC
–IN
OUT
C CC
V – 1363 SS01
PACKAGE DESCRIPTION Dimension in inches (millimeters) unless otherwise noted.
0.300 – 0.325
(7.620 – 8.255)
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
0.400*
(10.160)
MAX
87 65
0.009 – 0.015
(0.229 – 0.381)
0.065
(1.651)
TYP
+0.035
0.325 –0.015
( )8.255
+0.889
–0.381
0.100
(2.54)
BSC
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
0.020
(0.508)
MIN
0.255 ± 0.015*
(6.477 ± 0.381)
12
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
34
N8 1098
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LT1363.PDF ] | |
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