S E M I C O N D U C T O R
ICL8038
Precision Waveform Generator/
Voltage Controlled Oscillator
November 1996
Features
Description
o
• Low Frequency Drift with Temperature . . . 250ppm/ C 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
• Low Distortion . . . . . . . . . . . . . 1% (Sine Wave Output)
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
• 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
o
• Easy to Use - Just a Handful of External Components
Required
to less than 250ppm/ C.
Ordering Information
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PART NUMBER
ICL8038CCPD
STABILITY
TEMP. RANGE ( C)
0 to 70
PACKAGE
14 Ld PDIP
PKG. NO.
E14.3
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250ppm/ C (Typ)
o
ICL8038CCJD
250ppm/ C (Typ)
0 to 70
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
14 Ld CERDIP
F14.3
F14.3
F14.3
F14.3
F14.3
o
ICL8038BCJD
180ppm/ C (Typ)
0 to 70
o
ICL8038ACJD
120ppm/ C (Typ)
0 to 70
o
ICL8038BMJD (Note)
ICL8038AMJD (Note)
350ppm/ C (Max)
-55 to 125
-55 to 125
o
250ppm/ C (Max)
NOTE: Add /883B to part number if 883 processing is required.
Pinout
Functional Diagram
ICL8038
(PDIP, CERDIP)
TOP VIEW
V+
6
CURRENT
SOURCE
#1
COMPARATOR
#1
I
10
SINE WAVE
1
2
3
4
5
6
7
14
13
12
11
10
9
NC
NC
ADJUST
2I
C
SINE
WAVE OUT
COMPARATOR
#2
TRIANGLE
OUT
SINE WAVE
ADJUST
V- OR GND
DUTY CYCLE
FREQUENCY
ADJUST
TIMING
CAPACITOR
CURRENT
SOURCE
#2
FLIP-FLOP
SQUARE
WAVE OUT
V+
V- OR GND
11
FM SWEEP
INPUT
8
FM BIAS
SINE
CONVERTER
BUFFER
9
BUFFER
3
2
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 2864.2
Copyright © Harris Corporation 1996
8-153