V C X O (VOLTAGE CONTROLLED CRYSTAL OSCILLATORS)
“GSR57” series 5x7 mm Wave Form: True Sine Wave
VCXO
with true sine wave output has never been offered in such a
small package in the industry – the
GSR57
(5x3.2x1.0mm).
GSR57 features low phase noise (<130 dBc / Hz
at 1 KHz), low power (<20 m W) and wide supply voltage range.
Applications include telecommunication systems and mobile phones.
General Specifications
T
A
=+25°C, V
DD
at specified voltage, load
10 K
Ω
// 10 pF
Mercury Product Series
Frequency Range
Output Wave Form
Input Voltage Range (V
DD
)
Commercial
(0°C to +70°C)
Temperature code is ‘C”
Industrial (extended)
(-40°C to +85°C)
Temperature code is ‘
I
”
Output Level
Output Load
Harmonic Distortion
Current Consumption (typical)
Start-up Time
Voltage Control Range
Frequency Deviation Range
Linearity
Slope Polarity
Input Impedance
Frequency Response
3 dB Modulation Band Width
Phase Noise
Aging
Packaging
GSR57
PRELIMINARY
10 MHz ~40.0 MHz
True Sine Wave
V
DD
= +2.7 V D.C. min. +5.0 V D. C. max.
Voltage codes: “28” for +2.8 V; “3” for +3.3 V; “5” for +5.0 V
Stability code “A”:±25 ppm over 0°C to +70°C
Stability code “B”:±50 ppm over 0°C to +70°C
Stability code “C”: ±100 ppm over 0°C to +70°C”)
If non-standard please enter the desired stability after the “C”.
For example “C20” represents ±20 ppm over 0 to +70°C
Stability code “D”:±25 ppm over -40°C to +85°C
Stability code “E”:±50 ppm over -40°C to +85°C
Stability code “F”:±100 ppm over -40°C to +85°C
If non-standard please enter the desired stability after the “
I
”.
For example “
I
20” represents ±20 ppm over -40 to +85°C
MERCURY
Since 1973
Frequency
Stability
(1)
Voltage Control
Characteristics
1.0 V peak-to-peak typical
For 50 ohm load, please refer to
Mercury “GS” series
10 K
Ω
// 10 pF
< -25 dBc
1.2 mA V
DD
= +5 V; 1.1 mA V
DD
= +3.3 V; 1 mA V
DD
= +2.7 V
2 m sec. typical
0.0 V to V
DD
with control voltage center at 50% of V
DD
± 50 ppm typical
±10 % max.
Positive. Increasing control voltage increases output frequency.
> 0.5 M
Ω
25 KHz min.
25 KHz min.
< 130 dBc /Hz at 1 KHz offset
±5 ppm per year max.
16 mm tape; 8 mm pitch, 1000 pcs per reel
(1)
Inclusive of 25°C tolerance, operating temperature range, ±10% input voltage variation, load change, aging,
shock and vibration.
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail:
sales-us@mercury-crystal.com
MERCURY
Page 1 of 3
Date: Apr. 19, 2005
Rev. 1
MERCURY
www.mercury-crystal.com
V C X O (VOLTAGE CONTROLLED CRYSTAL OSCILLATORS)
“GSR57” series 5x7 mm Wave Form: True Sine Wave
Part Number Format and Example
= Please specify
MERCURY
Since 1973
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
GSR57 A
—
60
T
—
13.000
: Voltage codes: “”28” for +2.8 V, “3” for +3.3 V; “5” for +5.0 V
: Product series
: Frequency stability code: “A” ~ “F” or custom. See table above.
: Frequency deviation range in ppm.
: Frequency deviation tolerance: “N” for minimum; “M” for maximum; “T” for typical (±20%).
: Frequency in MHz
GSR57 Package Dimensions and Recommended Pad Layout:
[0.275±0.006]
7.00±0.15
[0.024]
0.6
[0.049]
1.25
3
2
4
1
unit mm[inches]
[0.055]
1.4
4
[0.197±0.006]
5.00±0.15
3
_ GSR57_
MEC
1
2
1.8±0.2
[0.071±0.008]
R0
.7
0.55 [0.022]
5.08 [0.200]
typical
bottom view
2.2[0.086]
2.0[0.079]
[0.004]
0.1
Pad 1
Pad 2
Pad 3
Pad 4
Voltage Control
Ground
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
1.8[0.071]
Rev. 1
V C X O (VOLTAGE CONTROLLED CRYSTAL OSCILLATORS)
“GSR57” series 5x7 mm Wave Form: True Sine Wave
Environment Performance Specifications
Green Requirement
Storage temp. range
Humidity
Hermetic seal
Solderability
Reflow
Vibration
Shock
Pb (lead) free, RoHS compliant
-55 to +125°C
85% RH, 85°C, 48 hours
Leak rate 2x10
-8
ATM-cm
3
/sec max.
MIL-STD-202F method 208E
260°C for 10 sec.
MIL-STD-202F method 204, 35G, 50 to 2000 Hz
MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave
MERCURY
Since 1973
RECOMMENDED REFLOW SOLDERING PROFILE
MERCURY
Page 1 of 3
Date: Apr. 19, 2005
Rev. 1
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