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LT1491 Datasheet(PDF) 9 Page - Linear Technology

Part # LT1491
Description  Dual and Quad Micropower Rail-to-Rail Input and Output Op Amps
PDF  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1491 Datasheet(HTML) 9 Page - Linear Technology

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9
LT1490/LT1491
Gain
The open-loop gain is almost independent of load when
the output is sourcing current. This optimizes perfor-
mance in single supply applications where the load is
returned to ground. The typical performance photo of
Open-Loop Gain for various loads shows the details.
APPLICATIONS INFORMATION
TYPICAL APPLICATIONS
–
+
VOUT
1490/91 TA02
100k
100k
C
0.1
µF
VOUT = 5VP-P WITH 5V SUPPLY
IS = 200µA
59k
1/2 LT1490
5V
R
50k
f = 1
2RC
AT VS = 5V, R = 50k, C = 1nF
OUTPUT IS 5kHz SLEW LIMITED TRIANGLE WAVE
–
+
VIN
1490/91 TA04
0.22
µF
CL ≤ 10,000pF
150
Ω
1/2 LT1490
Square Wave Oscillator
Optional Output Compensation for
Capacitive Loads Greater Than 200pF
SI PLIFIED SCHE ATIC
Q10
D5
Q9
Q1
Q7
R2
1k
R3
1k
R4
40k
Q8
Q5
–IN
+IN
Q11
Q12
D4
ONE AMPLIFIER
D2
Q2
D1
Q6
Q13
Q14
R1
30k
R5
40k
Q4
2
µA
+
Q15
Q19
D3
Q3
Q16
Q18
Q22
V +
Q17
Q20
Q21
OUT
V –
1490/91 SS



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