MAX038 Maxim, MAX038 Datasheet
MAX038
Manufacturer Part Number
MAX038
Description
High-Frequency Waveform Generator
Manufacturer
Maxim
Datasheet
1.MAX038.pdf
(16 pages)
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The MAX038 is a high-frequency, precision function
generator producing accurate, high-frequency triangle,
sawtooth, sine, square, and pulse waveforms with a
minimum of external components. The output frequency
can be controlled over a frequency range of 0.1Hz to
20MHz by an internal 2.5V bandgap voltage
reference and an external resistor and capacitor. The
duty cycle can be varied over a wide range by applying
a ±2.3V control signal, facilitating pulse-width modula-
tion and the generation of sawtooth waveforms.
Frequency modulation and frequency sweeping are
achieved in the same way. The duty cycle and
frequency controls are independent.
Sine, square, or triangle waveforms can be selected at
the output by setting the appropriate code at two
TTL-compatible select pins. The output signal for all
waveforms is a 2V
ground. The low-impedance output can drive up
to ±20mA.
The TTL-compatible SYNC output from the internal
oscillator maintains a 50% duty cycle—regardless of
the duty cycle of the other waveforms—to synchronize
other devices in the system. The internal oscillator can
be synchronized to an external TTL clock connected
to PDI.
________________________Applications
19-0266; Rev 2a; 9/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
_______________General Description
Precision Function Generators
Voltage-Controlled Oscillators
Frequency Modulators
Pulse-Width Modulators
Phase-Locked Loops
Frequency Synthesizer
FSK Generator—Sine and Square Waves
________________________________________________________________ Maxim Integrated Products
P-P
signal that is symmetrical around
High-Frequency Waveform Generator
* Contact factory for dice specifications.
____________________________Features
__________________Pin Configuration
______________Ordering Information
MAX038CPP
MAX038CWP
MAX038C/D
MAX038EPP
MAX038EWP
0.1Hz to 20MHz Operating Frequency Range
Triangle, Sawtooth, Sine, Square, and Pulse
Waveforms
Independent Frequency and Duty-Cycle
Adjustments
350 to 1 Frequency Sweep Range
15% to 85% Variable Duty Cycle
Low-Impedance Output Buffer: 0.1Ω
Low-Distortion Sine Wave: 0.75%
Low 200ppm/°C Temperature Drift
TOP VIEW
PART
COSC
DADJ
FADJ
GND
GND
GND
REF
A0
A1
IIN
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
10
0°C to +70°C
0°C to +70°C
0°C to +70°C
1
2
3
4
5
6
7
8
9
MAX038
DIP/SO
20
19
18
17
16
15
14
13
12
11
PIN-PACKAGE
20 Plastic DIP
20 SO
Dice*
20 Plastic DIP
20 SO
V-
OUT
GND
V+
DV+
DGND
SYNC
PDO
PDI
GND
1
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