S E M I C O N D U C T O R
ICL8038
Precision Waveform Generator/
Voltage Controlled Oscillator
Description
The ICL8038 waveform generator is a monolithic integrated
circuit capable of producing high accuracy sine, square, tri-
angular, sawtooth and pulse waveforms with a minimum of
external components. The frequency (or repetition rate) can
be selected externally from 0.001Hz to more than 300kHz
using either resistors or capacitors, and frequency modula-
tion and sweeping can be accomplished with an external
voltage. The ICL8038 is fabricated with advanced monolithic
technology, using Schottky barrier diodes and thin film resis-
tors, and the output is stable over a wide range of tempera-
ture and supply variations. These devices may be interfaced
with phase locked loop circuitry to reduce temperature drift
to less than 250ppm/
o
C.
November 1996
Features
• Low Frequency Drift with Temperature . . . 250ppm/
o
C
• Low Distortion . . . . . . . . . . . . . 1% (Sine Wave Output)
• High Linearity . . . . . . . . . 0.1% (Triangle Wave Output)
• Wide Frequency Range . . . . . . . . . . 0.001Hz to 300kHz
• Variable Duty Cycle . . . . . . . . . . . . . . . . . . . . 2% to 98%
• High Level Outputs . . . . . . . . . . . . . . . . . . . . TTL to 28V
• Simultaneous Sine, Square, and Triangle Wave
Outputs
• Easy to Use - Just a Handful of External Components
Required
Ordering Information
PART NUMBER
ICL8038CCPD
ICL8038CCJD
ICL8038BCJD
ICL8038ACJD
ICL8038BMJD (Note)
ICL8038AMJD (Note)
STABILITY
250ppm/
o
C (Typ)
250ppm/
o
C (Typ)
180ppm/
o
C (Typ)
120ppm/
o
C (Typ)
350ppm/
o
C (Max)
250ppm/
o
C (Max)
TEMP. RANGE (
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
-55 to 125
-55 to 125
PACKAGE
14 Ld PDIP
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
PKG. NO.
E14.3
F14.3
F14.3
F14.3
F14.3
F14.3
NOTE: Add /883B to part number if 883 processing is required.
Pinout
ICL8038
(PDIP, CERDIP)
TOP VIEW
Functional Diagram
V+
CURRENT
SOURCE
#1
I
14 NC
2I
13 NC
12 SINE WAVE
ADJUST
11 V- OR GND
10 TIMING
CAPACITOR
9
8
SQUARE
WAVE OUT
FM SWEEP
INPUT
BUFFER
BUFFER
CURRENT
SOURCE
#2
FLIP-FLOP
V- OR GND
11
SINE
CONVERTER
C
COMPARATOR
#2
10
6
COMPARATOR
#1
SINE WAVE 1
ADJUST
SINE
WAVE OUT
TRIANGLE
OUT
DUTY CYCLE
FREQUENCY
ADJUST
V+
FM BIAS
2
3
4
5
6
7
9
3
2
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
©
Harris Corporation 1996
File Number
2864.2
8-153
HARRIS [ HARRIS CORPORATION ]
