CTS
Reeves
FREQUENCY PRODUCTS
Model 531
Hybrid TCVCXO
CRYSTALS
Features:
• Frequency Range 1.0 to 50.0 MHz
• Stabilities as low as
±5
x 10
-7
• Low Profile (.350 high)
• Internal SMT Construction
• HCMOS/TTL Compatible
• Electrical Frequency Adjust
• 16 Pin DIL Hermetic Sealed
Package
The CTS Reeves Model 531 is a high stability
hybrid TCXO housed in a 16 pin DIL package
that is only .350 inches high. There are a
variety of temperature and stability options to
choose from. Useful as a reference oscillator
in digital synthesizers. The electrical frequency
adjust allows for easy tuning and calibration.
CLOCKS
VCXOs
TCXOs
Electrical Specifications:
Parameter
Supply Current (mA)
Supply Voltage (Vdd)
Output Type
Symmetry
Logic "0" Level
Logic "I" Level
Rise/Fall Time
Aging
Stability
Frequency Adjust
Adjust Voltage (Pin 6)
Frequency Range (MHz)
1-20 MHz
20-50 MHz
25 Max.
50 Max.
5V
±5%
HCMOS/TTL
50%
±10%
HCMOS/TTL, 50%
±5%
HCMOS
TTL (.5 Vdc), HCMOS (10% Vdd)
TTL (Vdd - .5), HCMOS (90% Vdd)
5.0 nS Max (5 TTL), 10 nS Max. (30 pF HCMOS)
±1.0
ppm/year Max.
See Chart
±5
ppm Min.
0.5 to 4.5V
OCXOs
83
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
CTS
Reeves
CRYSTALS
FREQUENCY PRODUCTS
Model 531
Hybrid TCVCXO
Outline Drawings:
0.970
(24.64)
Test Circuit:
1
6
8
Grd
0.250
(6.35)
MIN
• • • • • • • •
10K
• • • • • • • •
16
9
30 pF
0.100
(2.54)
1
8
CLOCKS
0.018
(0.46)
+ V
dd
0.350
(8.89)
MAX
0.023
(0.58)
TYP
Pin Connections
PIN
6
8
9
16
FUNCTION
CONTROL VOLTAGE
GND.
OUTPUT
+Vdd 5V
0.795
(20.19)
• • • • • • • •
0.600
(15.24)
All dimensions
in inches (mm).
• • • • • • • •
16
9
VCXOs
Mechanical Specifications:
Case:
Metal, hermetically sealed
Leads:
Nickel plated with solder coating
Seal:
Resistance weld
Leak Test:
Leak rate less than 5x10
-8
atmosphere-cc/sec of helium
Solderability:
95% solder coverage, using RMA flux
63 Sn / 37 Pb solder at +245°C
±5°C
Temperature:
Operating: See chart
Storage: -55° to 85°C
Vibration:
10 G's rms, 20 to 2000 Hz
Mechanical Shock:
50 G's 5ms pulse (3 shock/plane)
TCXOs
Ordering Information:
Model Type 531 ____ ___ ___ ___ ___ ___
Temperature
Stability
A
±0.5
X
B
±1.0
X
X
X
C
±2.0
X
X
X
X
X
D
±2.5
X
X
X
X
X
E
±5.0
X
X
X
X
X
Frequency in MHz
OCXOs
Temperature - Stability Options
Temp. Range T
S
A
0° to 50°
B
0° to 70°
C
-20° to 70°
D
-30° to 75°
E
-40 to 85°
Temperatures in
°C.
Stability in ppm
84
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
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