LT1819_15 Datasheet, PDF (1/18 Pages) Linear Technology – 400MHz, 2500V/s, 9mA Single/Dual Operational Amplifiers

FEATURES
n _{400MHz Gain Bandwidth Product}
n _{2500V/μs Slew Rate}
n _{–85dBc Distortion at 5MHz}
n _{9mA Supply Current Per Amplifier}
n _{6nV/√Hz Input Noise Voltage}
n _{Unity-Gain Stable}
n _{1.5mV Maximum Input Offset Voltage}
n _{8μA Maximum Input Bias Current}
n _{800nA Maximum Input Offset Current}
n _{40mA Minimum Output Current, VOUT = ±3V}
n _{±3.5V Minimum Input CMR, VS = ±5V}
n _{Specified at ±5V, Single 5V Supplies}
n _{Operating Temperature Range: –40°C to 85°C}
n _{Low Profile (1mm) TSOT-23 (ThinSOT™) Package}
APPLICATIONS
n _{Wideband Amplifiers}
n _Buffers
n _{Active Filters}
n _{Video and RF Amplification}
n _{Communication Receivers}
n _{Cable Drivers}
n _{Data Acquisition Systems}
LT1818/LT1819
400MHz, 2500V/µs, 9mA
Single/Dual Operational
Amplifiers
DESCRIPTION
The LT^®1818/LT1819 are single/dual wide bandwidth, high
slew rate, low noise and distortion operational amplifiers
with excellent DC performance. The LT1818/LT1819 have
been designed for wider bandwidth and slew rate, much
lower input offset voltage and lower noise and distortion
than devices with comparable supply current. The circuit
topology is a voltage feedback amplifier with the excellent
slewing characteristics of a current feedback amplifier.
The output drives a 100Ω load to ±3.8V with ±5V sup-
plies. On a single 5V supply, the output swings from 1V
to 4V with a 100Ω load connected to 2.5V. The amplifier
is unity-gain stable with a 20pF capacitive load without the
need for a series resistor. Harmonic distortion is –85dBc
up to 5MHz for a 2V_P-P output at a gain of 2.
The LT1818/LT1819 are manufactured on Linear Tech-
nology’s advanced low voltage complementary bipolar
process. The LT1818 (single op amp) is available in
TSOT-23 and SO-8 packages; the LT1819 (dual op amp)
is available in MSOP-8 and SO-8 packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Single Supply Unity-Gain ADC Driver for Oversampling Applications
2.5VDC
±1VAC
5V
+
LT1818
–
5V
51.1Ω
18pF
LTC1744
A_IN+
14 BITS
50Msps
2.5V
A_IN– ^{(SET FOR 2V}P-P
FULL SCALE)
18189 TA01
FFT of Single Supply ADC Driver
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
0
f_IN = 5.102539MHz
f_S = 50Msps
V_IN = 300mV_P-P
SFDR = 78dB
8192 POINT FFT
NO WINDOWING
OR AVERAGING
2
3
5M 10M 15M 20M 25M
FREQUENCY (Hz)
18189 TA02
18189fb
1