LT1803/LT1804/LT1805
Single/Dual/Quad 100V/µs,
85MHz, Rail-to-Rail Input and
Output Op Amps
U
DESCRIPTIO
FEATURES
The LT®1803/LT1804/LT1805 are single/dual/quad, low
power, high speed rail-to-rail input and output operational
amplifiers with excellent DC performance. The LT1803/
LT1804/LT1805 feature reduced supply current, lower
input offset voltage, lower input bias current and higher
DC gain than other devices with comparable bandwidth
and slew rate.
■
Slew Rate: 100V/µs
■
Gain Bandwidth Product: 85MHz
■
Input Common Mode Range Includes Both Rails
■
Output Swings Rail-to-Rail
■
Low Quiescent Current: 3mA Max per Amplifier
■
Large Output Current: 42mA
■
Voltage Noise: 21nV/√Hz
■
Typically, the LT1803/LT1804/LT1805 have an input off-
set voltage of 350µV, an input bias current of 125nA and
an open-loop gain of 60V/mV.
Power Supply Rejection: 90dB
■
Open-Loop Gain: 60V/mV
■
Operating Temperature Range: –40°C to 85°C
■
Single Available in the 8-Pin SO and 5-Pin Low Profile
The LT1803/LT1804/LT1805 have an input range that
includesbothsupplyrailsandanoutputthatswingswithin
20mV of either supply rail to maximize the signal dynamic
range in low supply applications.
(1mm) SOT-23 (ThinSOTTM) Package
■
Dual Available in 8-Lead DFN and SO Packages
■
Quad Available in the 14-Pin Narrow SO Package
U
The LT1803/LT1804/LT1805 are specified at 3V, 5V and
±5V supplies and typically maintain their performance for
supplies from 2.3V to 12.6V. The inputs can be driven
beyond the supplies without damage or phase reversal of
the output.
APPLICATIO S
■
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
■
■
■
The LT1803 is available in the 8-pin SO package with the
standard op amp pinout and in the 5-pin SOT-23 package.
The LT1804 is available in 8-pin DFN and SO packages
with the standard op amp pinouts. The LT1805 features
thestandardquadopampconfigurationandisavailablein
a 14-pin plastic SO package.
Active Filters
■
Video Line Driver
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
U
TYPICAL APPLICATIO
Inverting DC Restore Circuit Response
Inverting DC Restore
R2
10k
R1
1k
VIN
50mV/DIV
GND
–
V
IN
A
1/2 LT1804
+
V
OUT
+
R4
V
S
VOUT
500mV/DIV
GND
100k
R5
2k
R3
1k
–
+
D2
1N4148
D1
1N4148
B
1/2 LT1804
50µs/DIV
18045 TA02
C1
0.1µF
R6
1M
V
= ±5V
S
18045 TA01
–
V
S
180345f
1