LT1815/LT1816/LT1817
1
181567fb
TYPICAL APPLICATION
FEATURES DESCRIPTION
Single/Dual/Quad 220MHz,
1500V/µs Operational Amplifi ers
with Programmable Supply Current
The LT
®
1815/LT1816/LT1817 are low power, high speed,
very high slew rate operational amplifi ers with excellent
DC performance. The LT1815/LT1816/LT1817 feature
higher bandwidth and slew rate, much lower input offset
voltage and lower noise and distortion than other devices
with comparable supply current. A programmable current
option (LT1815 and LT1816A) allows power savings and
fl exibility by operating at reduced supply current and speed.
The circuit topology is a voltage feedback amplifi er with the
slewing characteristics of a current feedback amplifi er.
The output drives a 100Ω load to ±3.8V with ±5V supplies.
On a single 5V supply, the output swings from 1V to 4V
with a 100Ω load connected to 2.5V. Harmonic distortion
is –70dB for a 5MHz, 2V
P-P
output driving a 100Ω load
in a gain of –1.
The LT1815/LT1816/LT1817 are manufactured on Linear
Technology’s advanced low voltage complementary bipolar
process and are available in a variety of TSOT-23, SO,
MSOP, SSOP and leadless DFN packages.
Programmable Current Amplifi er Switches
from Low Power Mode to Full Speed Mode
APPLICATIONS
n
220MHz Gain-Bandwidth Product
n
1500V/μs Slew Rate
n
6.5mA Supply Current per Amplifi er
n
Programmable Current Option
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
50mA Minimum Output Current, V
OUT
= ±3V
n
±3.5V Minimum Input CMR, V
S
= ±5V
n
Specifi ed at ±5V, Single 5V Supplies
n
Operating Temperature Range: –40°C to 85°C
n
Space Saving MSOP and SSOP Packages
n
Low Profi le (1mm) SOT-23 (ThinSOT™) and Leadless
DFN Packages
n
Wideband Amplifi ers
n
Buffers
n
Active Filters
n
Video and RF Amplifi cation
n
Communication Receivers
n
Cable Drivers
n
Data Acquisition Systems
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.
Distortion vs Frequency
–
+
LT1815
40k
100Ω
V
OUT
181567 TA01
–5V
I
SET
500Ω
HS/LP
V
IN
500Ω
5V
FREQUENCY (Hz)
–100
–70
–80
–90
–30
–40
–50
–60
181567 TA02
DISTORTION (dB)
100k
10M
1M
3RD HARMONIC
2ND HARMONIC
LOW POWER MODE
2ND HARMONIC
3RD HARMONIC
FULL SPEED MODE
A
V
= 2
V
S
= ±5V
V
O
= 2V
P-P
R
L
= 100Ω
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