LT1491AIN View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1491AIN' PDF : 16 Pages View PDF
LT1490A/LT1491A
APPLICATIONS INFORMATION
Gain
The open-loop gain is almost independent of load when
the output is sourcing current. This optimizes performance
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.
TYPICAL APPLICATIONS
Square Wave Oscillator
5V
100k
100k
59k
+
1/2 LT1490A
–
R
50k
C
0.1μF
1490A TA02
VOUT
f
=
1
2RC
VOUT = 5VP-P WITH 5V SUPPLY
IS = 200μA
AT VS = 5V, R = 50k, C = 1nF
OUTPUT IS 5kHz SLEW LIMITED TRIANGLE WAVE
Optional Output Compensation for
Capacitive Loads Greater Than 200pF
VIN
+
1/2 LT1490A
–
CL ≤ 10,000pF
0.22μF
150Ω
1490A TA04
SIMPLIFIED SCHEMATIC
Q1
R1
30k
R2
1k
Q4 – IN
+
2μA
R3
1k
+ IN
Q2
D1
D2
Q7 Q8
Q11 Q12
Q9
Q10
Q13
Q3
D3
V+
Q22
Q15
Q14
Q19
Q17
Q20
OUT
Q16 Q18
Q21
Q5
Q6
ONE AMPLIFIER
D4 D5
R4
R5
40k
40k
V–
1490A SS
12
14901afd
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