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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
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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.
–
+
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
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
APPLICATIO S I FOR ATIO
TYPICAL APPLICATIO S
SI PLIFIED SCHE ATIC



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