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LT1813/LT1814
18134fa
FEATURES
APPLICATIO S
U
DESCRIPTIO
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TYPICAL APPLICATIO
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Dual/Quad 3mA, 100MHz,
750V/µs Operational Amplifiers
The LT
®
1813/LT1814 are dual and quad, low power, high
speed, very high slew rate operational amplifiers with
excellent DC performance. The LT1813/LT1814 feature
reduced supply current, lower input offset voltage, lower
input bias current and higher DC gain than other devices
with comparable bandwidth. The circuit topology is a
voltage feedback amplifier with the slewing characteris-
tics of a current feedback amplifier.
The output drives a 100Ω load to ±3.5V with ±5V supplies.
On a single 5V supply, the output swings from 1.1V to 3.9V
with a 100Ω load connected to 2.5V. The amplifiers are
stable with a 1000pF capacitive load making them useful
in buffer and cable driver applications.
The LT1813/LT1814 are manufactured on Linear
Technology’s advanced low voltage complementary bipo-
lar process. The LT1813 dual op amp is available in
8-pin MSOP, SO and 3mm x 3mm low profile (0.8mm)
dual fine pitch leadless packages (DFN). The quad LT1814
is available in 14-pin SO and 16-pin SSOP packages. A
single version, the LT1812, is also available (see separate
data sheet).
■
100MHz Gain Bandwidth Product
■
750V/µs Slew Rate
■
3.6mA Maximum Supply Current per Amplifier
■
Tiny 3mm x 3mm x 0.8mm DFN Package
■
8nV/√Hz Input Noise Voltage
■
Unity-Gain Stable
■
1.5mV Maximum Input Offset Voltage
■
4µA Maximum Input Bias Current
■
400nA Maximum Input Offset Current
■
40mA Minimum Output Current, V
OUT
= ±3V
■
±3.5V Minimum Input CMR, V
S
= ±5V
■
30ns Settling Time to 0.1%, 5V Step
■
Specified at ±5V, Single 5V Supplies
■
Operating Temperature Range: –40°C to 85°C
■
Active Filters
■
Wideband Amplifiers
■
Buffers
■
Video Amplification
■
Communication Receivers
■
Cable Drivers
■
Data Acquisition Systems
Bandpass Filter with Independently Settable Gain, Q and f
C
Filter Frequency Response
, LTC and LT are registered trademarks of Linear Technology Corporation.
–
+
1/4 LT1814
R
G
R
Q
R
R1
R
G
R
C
C
R1
R
F
R
F
R
V
IN
GAIN =
–
+
1/4 LT1814
–
+
–
+
1/4 LT1814
BANDPASS
OUT
1/4 LT1814
1814 TA01
R1
R
Q
Q =
1
2πR
F
C
f
C
=
FREQUENCY (Hz)
OUTPUT MAGNITUDE (6dB/DIV)
0
1k 100k 1M 10M
1814 TA02
10k
R = 499Ω
R1 = 499Ω
R
F
= 475Ω
R
Q
= 49.9Ω
R
G
= 499Ω
C = 3.3nF
f
C
= 100kHz
Q = 10
GAIN = 1
V
S
= ±5V
V
IN
= 5V
P-P
DISTORTION:
2nd < –76dB
3rd < –90dB
ACROSS FREQ
RANGE