Datasheet

16
LT1028/LT1128
Super Low Distortion Variable Sine Wave Oscillator
1028/1128 TA10
–
+
LT1028
C2
0.047
R2
R1
C1
0.047
2k
20Ω
20Ω 2k
10pF
5.6k
15µF
+
22k
10k
–
+
LT1055
1V
RMS
OUTPUT
1.5kHz TO 15kHz
WHERE R1C1 = R2C2
f =
1
2πRC
()
MOUNT 1N4148s
IN CLOSE PROXIMITY
TRIM FOR
LOWEST
DISTORTION
100k
10k
20k
2N4338
560Ω
2.4k
4.7k
LT1004-1.2V
15V
<0.0018% DISTORTION AND NOISE.
MEASUREMENT LIMITED BY RESOLUTION OF
HP339A DISTORTION ANALYZER
1028/1128 TA11
–
+
LT1052
10Ω
0.1
30k
10k
15V
7
6
4
2
3
8
1
–15V
0.1
0.01
15V
68Ω
–
+
LT1028
130Ω
1
7
8
4
–15V
INPUT
OUTPUT
1N758
1N758
100k
2
3
Chopper-Stabilized Amplifier
TYPICAL APPLICATIO S
U