V C X O (VOLTAGE CONTROLLED CRYSTAL OSCILLATORS)
“GSR57” series 5x7 mm Wave Form: True Sine Wave
MERCURY
Since 1973
Part Number Format and Example
"= Please specify
Example: 28GSR57A-60T-13.000
Explanation: GSR57 Sine wave VCXO, +2.8 V supply voltage, ±25 ppm frequency stability over 0 to +70°C , ±60 ppm
typical pulling range, 13.000 MHz
"
28
n
"
GSR57 A
"
60
q
"
T
r
"
13.000
s
—
—
o
p
n: Voltage codes: “”28” for +2.8 V, “3” for +3.3 V; “5” for +5.0 V
o: Product series p: Frequency stability code: “A” ~ “F” or custom. See table above.
q: Frequency deviation range in ppm.
r: Frequency deviation tolerance: “N” for minimum; “M” for maximum; “T” for typical (±20%).
s: Frequency in MHz
GSR57 Package Dimensions and Recommended Pad Layout:
unit mm[inches]
[0.275±0.006]
7.00±0.15
[0.024]
0.6
[0.055]
1.4
4
3
2
_ GSR57_
M E C
3
2
4
1
1
5.08 [0.200]
typical
bottom view
2.2[0.086]
Pad 1
Voltage Control
Ground
Pad 2
Pad 3
Pad 4
Output
Supply voltage
5.08 [0.200]
Chamfered pad is pad No. 1. Count counter-clockwise when looking at top view.
Count clockwise when looking at bottom view.
note: 0.01 uF decoupling capacitor built-in
MERCURY
Page 2 of 3
Date: Apr. 19, 2005
Rev. 1
MERCURY [ MERCURY UNITED ELECTRONICS INC ]
