CDP6872E INTERSIL [Intersil Corporation], CDP6872E Datasheet

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CDP6872E

Manufacturer Part Number
CDP6872E
Description
Low Power Crystal Oscillator
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
1.CDP6872E.pdf (15 pages)
January 1996
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
Features
• Single Supply Operation at 32kHz . . . . . . . 2.0V to 7.0V
• Operating Frequency Range. . . . . . . . 10kHz to 10MHz
• Supply Current at 32kHz . . . . . . . . . . . . . . . . . . . . . .5 A
• Supply Current at 1MHz . . . . . . . . . . . . . . . . . . . .130 A
• Drives 2 CMOS Loads
• Only Requires an External Crystal for Operation
Applications
• Battery Powered Circuits
• Remote Metering
• Embedded Microprocessors
• Palm Top/Notebook PC
Pinout
OSC OUT
OSC IN
V
V
DD
SS
CDP6872 (PDIP, SOIC)
1
2
3
4
TOP VIEW
|
Copyright
8
7
6
5
©
Intersil Corporation 1999
ENABLE
FREQ 2
FREQ 1
OUTPUT
1
Description
The CDP6872 is a very low power crystal-controlled oscillators
that can be externally programmed to operate between 10kHz
and 10MHz. For normal operation it requires only the addition
of a crystal. The part exhibits very high stability over a wide
operating voltage and temperature range.
The CDP6872 also features a disable mode that switches
the output to a high impedance state. This feature is useful
for minimizing power dissipation during standby and when
multiple oscillator circuits are employed.
Ordering Information
Typical Application Circuit
CDP6872
CDP6872
CDP6872
NUMBER
PART
32.768kHz
32.768kHz MICROPOWER CLOCK OSCILLATOR
CRYSTAL
0.1 f
E
M
H
Low Power Crystal Oscillator
V
DD
TEMPERATURE
CDP6872
-40
-40
-40
o
o
o
RANGE
C to +85
C to +85
C to +85
1
2
3
4
CDP6872
o
o
o
C
C
C
8 Lead Plastic DIP
8 Lead Plastic SOIC (N)
DIE
8
7
6
5
File Number
PACKAGE
32.768kHz
CLOCK
4069

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CDP6872E Summary of contents

Page 1

January 1996 Features • Single Supply Operation at 32kHz . . . . . . . 2.0V to 7.0V • Operating Frequency Range 10kHz to 10MHz • Supply Current at 32kHz . . ...

Page 2

Simplified Block Diagram V DD (NOTE ENABLE V DD S1a BIAS DECODE ...

Page 3

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

Test Circuits + CDP6872 1000pF FIGURE 1. In production the CDP6872 is tested with a 32kHz and a 1MHz crystal. However for characterization purposes data was taken using a sinewave generator ...

Page 5

Crystal Selection For general purpose applications, a Parallel Mode Crystal is a good choice for use with the CDP6872. However for applications where a precision frequency is required, the designer needs to consider other factors. Crystals are available in two ...

Page 6

Typical values of the capacitors in Figure 2 are shown below. Some trial and error may be required before the best combi- nation is determined. The values listed are total capacitance including parasitic or other sources. Remember that in the ...

Page 7

Die Characteristics DIE DIMENSIONS 1mils METALLIZATION: Type Å Å Thickness: 10k 1k GLASSIVATION: Type: Nitride ( Over Silox (SiO 3 4 Å Å Silox Thickness Å Å Nitride ...

Page 8

Typical Performance Curves C = 40pF 5MHz 5V GND L OSC DD SS 1.0V/DIV. 20.0ns/DIV. FIGURE 5. OUTPUT WAVEFORM (C 1050 F = 5MHz ...

Page 9

Typical Performance Curves 3000 18pF, GENERATOR L 2500 V = +8V CC 2000 1500 1000 500 FREQUENCY (MHz) FIGURE 11. SUPPLY CURRENT vs ...

Page 10

Typical Performance Curves 18pF, GENERATOR 100 200 300 400 500 600 700 800 900 1000 1100 FREQUENCY (kHz) FIGURE 17. ...

Page 11

Typical Performance Curves F = 5MHz 30pF GENERATOR 35 30 -100 - TEMPERATURE ( FIGURE 23. DUTY CYCLE vs TEMPERATURE F1 = ...

Page 12

Typical Performance Curves -10 -15 DEVIATION FROM 5.0V FREQUENCY - SUPPLY VOLTAGE (V) DD FIGURE 29. FREQUENCY CHANGE 5MHz ...

Page 13

Typical Performance Curves GND DD SS 620 580 540 500 436.5 A/V 460 420 380 1000pF 1 F 178 340 2 3 300 100 50 CDP6872 260 10K 100K ...

Page 14

Dual-In-Line Plastic Packages (PDIP INDEX N/2 AREA -B- -A- D BASE PLANE -C- SEATING PLANE 0.010 (0.25 NOTES: 1. Controlling Dimensions: INCH. In case of conflict between ...

Page 15

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - - 0.10(0.004) 0.25(0.010 NOTES: 1. Symbols are defined in the “MO ...

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