Thermal Information
Thermal Resistance (Typical, Note 1) θJA (oC/W) θJC (oC/W) CERDIP Package. . . . . . . . . . . . . . . . . 75 20 PDIP Package . . . . . . . . . . . . . . . . . . . 115 N/A Maximum Junction Temperature (Ceramic Package) . . . . . . . .175oC Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
ICL8038
Data Sheet September 1998 File Number 2864.3
Precision Waveform Generator/Voltage Controlled Oscillator
The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square, triangular, 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 modulation and sweeping can be accomplished with an external voltage. The ICL8038 is fabricated with advanced monolithic technology, using Schottky barrier diodes and thin film resistors, and the output is stable over a wide range of temperature and supply variations. These devices may be interfaced with phase locked loop circuitry to reduce temperature drift to less than 250ppm/oC.
ICL8038CC PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX ICL8038BC MIN TYP MAX ICL8038AC MIN TYP MAX UNITS
Features
• Low Frequency Drift with Temperature . . . . . . .250ppm/oC • 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
ICL8038CC ICL8038BC MIN TYP MAX ICL8038AC MIN TYP MAX UNITS TEST CONDITIONS
PARAMETER
SYMBOL
MIN
TYP
MAX
Supply Voltage Operating Range
VSUPPLY V+ V+, VSingle Supply
ICL8038
Absolute Maximum Ratings
Supply Voltage (V- to V+). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36V Input Voltage (Any Pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . V- to V+ Input Current (Pins 4 and 5). . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA Output Sink Current (Pins 3 and 9) . . . . . . . . . . . . . . . . . . . . . 25mA
NOTE: 1. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
VSUPPLY = ±10V or +20V, TA = 25oC, RL = 10kΩ, Test Circuit Unless Otherwise Specified
OUTPUT CHARACTERISTICS Square Wave Leakage Current Saturation Voltage Rise Time Fall Time Typical Duty Cycle Adjust (Note 6) Triangle/Sawtooth/Ramp Amplitude VTRIANGLE
Linearity Output Impedance ZOUT IOUT = 5mA
-
0.1 200
-
-
0.05 200
-
-
0.05 200
-
2
ICL8038
Electrical Specifications
VSUPPLY = ±10V or +20V, TA = 25oC, RL = 10kΩ, Test Circuit Unless Otherwise Specified (Continued)
+10 ±5
12
+30 ±15 20
+10 ±5 -
12
+30 ±15 20
+10 ±5 -
12
+30 ±15 20
V V mA
Dual Supplies VSUPPLY = ±10V (Note 2)
Supply Current
ISUPPLY
FREQUENCY CHARACTERISTICS (All Waveforms) Max. Frequency of Oscillation Sweep Frequency of FM Input Sweep FM Range FM Linearity Frequency Drift with Temperature (Note 5) Frequency Drift with Supply Voltage ∆f/∆T ∆f/∆V fMAX fSWEEP (Note 3) 10:1 Ratio 0oC to 70oC Over Supply Voltage Range 100 10 35:1 0.5 250 0.05 100 10 35:1 0.2 180 0.05 100 10 35:1 0.2 120 0.05 % ppm/oC %/V kHz kHz
Ordering Information
PART NUMBER ICL8038CCPD ICL8038CCJD ICL8038BCJD ICL8038ACJD STABILITY 250ppm/oC (Typ) 250ppm/oC (Typ) 180ppm/oC (Typ) 120ppm/oC (Typ) TEMP. RANGE (oC) 0 to 70 0 to 70 0 to 70 0 to 70 PACKAGE 14 Ld PDIP 14 Ld CERDIP 14 Ld CERDIP 14 Ld CERDIP PKG. NO. E14.3 F14.3 F14.3 F14.3
Pinout
ICL8038 (PDIP, CERDIP) TOP VIEW
Functional Diagram
V+ CURRENT SOURCE #1 I 14 NC 2I 2 3 4 5 6 7 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 C COMPARATOR #2 10 6 COMPARATOR #1