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Nippon Precision Circuits |
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CF5011 series
1.8V Crystal Oscillator Module ICs
OVERVIEW
The CF5011 series are low-voltage crystal oscillator module ICs that operate at 1.8V. The crystal oscillator cir-
cuit and output buffer employ a low-voltage CMOS process operating at 1.8V. The crystal oscillator circuit has
a built-in thin-film feedback resistor with good temperature characteristics and built-in capacitors with excel-
lent frequency response, making possible a stable 3rd-harmonic oscillator with only the addition of a crystal
element.
FEATURES
I 3rd-harmonic oscillation
I 1.6 to 2.0V operating supply voltage range
I 30 to 70MHz recommended operating frequency
range
I Inverter amplifier feedback resistor built-in
I Oscillator capacitors CG , CD built-in
SERIES CONFIGURATION
I Standby function
I fO output frequency (oscillator frequency)
I 8mA output drive capability (VDD = 1.6V)
I CMOS output duty level
I Chip form (CF5011×××)
Version
Recommended
operating
frequency [MHz]
CF5011ALA
CF5011ALB1
CF5011ALC1
CF5011ALD1
30 to 40
40 to 50
50 to 60
60 to 70
CF5011ANA
30 to 40
CF5011ANB
40 to 50
CF5011ANC
50 to 60
CF5011AND
60 to 70
1. Under development
gm ratio
1.0
1.0
1.0
1.5
1.0
1.0
1.0
1.5
Built-in capacitance [pF]
CG CD
14 16
8 16
8 16
8 16
14 16
8 16
8 16
8 16
Rf [kΩ]
4.0
3.9
2.2
2.7
4.0
3.9
2.2
2.7
Note: Recommended operating frequency is not the guaranteed value but is measured using NPC’s standard crystal.
ORDERING INFORMATION
Standby function
Yes
Yes
Yes
Yes
No
No
No
No
Device
CF5011×××–1
Package
Chip form
NIPPON PRECISION CIRCUITS INC.—1
PAD LAYOUT
(Unit:µm)
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CF5011 series
VDD
Q (920,1310)
Y
(0,0) INHN XTN
XT VSS
X
Chip size: 0.92 × 1.31 mm
Chip thickness: 300 ± 30 µm
Chip base: VDD level
PIN DESCRIPTION and PAD DIMENSIONS
Name
INHN
XT
XTN
VSS
Q
VDD
Pad dimensions [µm]
I/O Description
XY
Operation mode control input.
<CF5011AL×>
I
The oscillator stops and Q becomes high impedance when LOW. Power saving
pull-up resistor built in
195
<CF5011AN×>
Q becomes high impedance when LOW. Pull-up resistor built in
212
I Amplifier input
O Amplifier output
Crystal oscillator connection pins.
Crystal oscillator connected between XT and XTN
385 212
575 212
– Ground
766 212
O Output. Output frequency (fO). High impedance when INHN is LOW
– Supply voltage
765 1152
162 1152
BLOCK DIAGRAM
CF5011AL×
VDD VSS
XTN
XT
CG CD
Rf 1 Cf
Rf 2
CF5011AN×
VDD VSS
XTN
CG Rf 2
CD
Rf 1 Cf
Q
XT
Q
INHN
Substrate potential: VDD
INHN
Substrate potential: VDD
NIPPON PRECISION CIRCUITS INC.—2
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