Linear Technology LT1490CN8 Linear IC DIP8 Dual R-to-R I/O OA LT1490CN8 Datenbogen
Produktcode
LT1490CN8
9
LT1490/LT1491
Gain
The open-loop gain is almost independent of load when
the output is sourcing current. This optimizes perfor-
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.
returned to ground. The typical performance photo of
Open-Loop Gain for various loads shows the details.
–
+
V
OUT
1490/91 TA02
100k
100k
C
0.1
0.1
µ
F
V
OUT
= 5V
P-P
WITH 5V SUPPLY
I
S
= 200
µ
A
59k
1/2 LT1490
5V
R
50k
f = 1
2RC
AT V
S
= 5V, R = 50k, C = 1nF
OUTPUT IS 5kHz SLEW LIMITED TRIANGLE WAVE
–
+
V
IN
1490/91 TA04
0.22
µ
F
C
L
≤
10,000pF
150
Ω
1/2 LT1490
Square Wave Oscillator
Optional Output Compensation for
Capacitive Loads Greater Than 200pF
Capacitive Loads Greater Than 200pF
Q10
D5
Q9
Q1
Q7
R2
1k
R3
1k
R4
40k
40k
Q8
Q5
– IN
+IN
Q11
Q12
D4
ONE AMPLIFIER
D2
Q2
D1
Q6
Q13
Q14
R1
30k
30k
R5
40k
40k
Q4
2
µ
A
+
Q15
Q19
D3
Q3
Q16
Q18
Q22
V
+
Q17
Q20
Q21
OUT
V
–
1490/91 SS
APPLICATIO S I FOR ATIO
W
U
U
U
TYPICAL APPLICATIO S
U
SI PLIFIED SCHE ATIC
W
W