Datasheet

LT1055/LT1056
14
10556fd
For more information www.linear.com/LT1055
TYPICAL APPLICATIONS
100kHz Voltage Controlled Oscillator
–
+
–
+
–
+
–
+
X1
X2
U1
U2
COM
VR
Y1
Y2
+V
CC
W
Z1
Z2
GT
UP
–V
+15V
SINE OUT
2V
RMS
0kHs TO 100kHs
–15
AD639
2
3
15V
7
6
4
–15V
–15V
68k
68k
10k
4.5k22.1k
1k
LT1056
FINE
DISTORTION
TRIMS
15V
15V
15V
15V
–15V
–15V
–15V
–15V
LT1055/56 TA08
50k
10Hz
DISTORTION
TRIM
22M
POLYSTYRENE
500pF
7
4
3
2
6
LT1056
22k
15pF
HP5082-
2810
3
2
10k*
10k
1k
4.7k
4.7k
*1% FILM RESISTOR
=1N4148
FREQUENCY LINEARITY = 0.1%
FREQUENCY STABILITY = 150ppm/°C
SETTLING TIME = 1.7µs
DISTORTION = 0.25% AT 100kHz,
0.07% AT 10zHz
1k
5k
FREQUENCY
TRIM
LT1011
8
7
1
4
LM329
0.01µF
2.5k*
10k*
5k*
2N4391
2N4391
2N4391
6
7
4
15V
–15V
LT1056
100kHz
DISTORTION
TRIM
2k
9.09k*
0V TO 10V
INPUT
2
3
10k
20pF
12-Bit Voltage Output D/A Converter
–
+
15V
–15V
7
4
3
2
6
LT1056
OUTPUT
0V TO 10V
C
F
= 15pF TO 33pF
SETTLING TIME TO 2mV
(0.8 LSB) = 1.5µs TO 2µs
0 TO 2
OR 4mA
12-BIT CURRENT OUTPUT D/A
CONVERTER (e.g., 6012,565
OR DAC-80)
C
F
LT1055/56 TA09