LT1722_15 Datasheet, PDF (1/18 Pages) Linear Technology – Single, Dual, Quad 200MHz Low Noise Precision Op Amps

LT1722/LT1723/LT1724
Single, Dual, Quad 200MHz
Low Noise Precision Op Amps
FEATURES
n _{3.8nV/√Hz Input Noise Voltage}
n _{3.7mA Supply Current}
n _{200MHz Gain Bandwidth}
n _{Low Total Harmonic Distortion: – 85dBc at 1MHz}
n _{70V/μs Slew Rate}
n _{400μV Maximum Input Offset Voltage}
n _{300nA Maximum Input Bias Current}
n _{Unity-Gain Stable}
n _{Capacitive Load Stable Up to 100pF}
n _{23mA Minimum Output Current}
n _{Specified at ±5V and Single 5V}
n _{Low Profile (1mm) SOT-23 (ThinSot}^™_{) Package}
APPLICATIONS
n _{Video and RF Amplification}
n _{ADSL, HDSL II, VDSL Receivers}
n _{Active Filters}
n _{Wideband Amplifiers}
n _Buffers
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.
DESCRIPTION
The LT^®1722/LT1723/LT1724 are single/dual/quad, low
noise, low power, high speed operational amplifiers. These
products feature lower input offset voltage, lower input bias
current and higher DC gain than devices with comparable
bandwidth. The 200MHz gain bandwidth ensures high
open-loop gain at video frequencies.
The low input noise voltage is achieved with reduced
supply current. The total noise is optimized for a source
resistance between 0.8k and 12k. Due to the input bias
current cancellation technique used, the resistance seen
by each input does not need to be balanced.
The output drives a 150Ω load to ±3V with ±5V supplies.
On a single 5V supply the output swings from 1.5V to
3.5V with a 500Ω load connected to 2.5V. The amplifier
is unity-gain stable (C_LOAD ≤ 100pF).
The LT1722/LT1723/LT1724 are manufactured on Linear
Technology’s advanced low voltage complementary
bipolar process. The LT1722 is available in the SO-8 and
5-pin SOT-23 packages. The LT1723 is available in the
SO-8 and MS8 packages. The LT1724 is available in the
14-lead SO package.
TYPICAL APPLICATION
Differential Video Line Driver
R3
750Ω
C1 5pF
R5 2k
–
R7
62.5Ω
V_IN
75Ω
SOURCE
R2
2k
1/2 LT1723
+
V_IN
C2 5pF
R4 2k
125Ω
CAT-5
TWISTED PAIR
R1
–
R6
75Ω
62.5Ω
1/2 LT1723
1723 TA01
+
–V_IN
Line Driver Mulitburst Video Signal
V_IN/2 _62.5Ω
+V_OUT LOAD
–V_{OUT 62.5Ω}
–V_IN/2 ^LOAD
+V_OUT
0.5V/DIV
V_IN
1V/DIV
–V_OUT
0.5V/DIV
1723 TA02
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