125 Series FR125 - Connor

125 Series FR125
GPS Synchronous
Clock Generator
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
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General Description
The FR125 Frequency module is a GPS driven, mixedsignal phase lock loop, generating up to 10.0MHz
CMOS and a 10MHz SINE output from an intrinsically
low jitter voltage controlled crystal oscillator. The FR125
can lock to a 10MHz reference derived from the onboard GPS receiver or an external 10MHz reference or
to an external 1PPS reference. Alarms are provided to
indicate Loss-of-Lock, Holdover, and Antenna Fault. The
on-board GPS receiver requires an outdoor mounted
GPS antenna for the best stability and consistent
performance.
The mode control inputs are used to manually
switch between references and/or holdover. The user
application should monitor the alarm outputs and
manually switch modes as needed.
Serial I/O lines provide access to the NMEA messages from the GPS receiver (referenced in the
Connor-Winfield’s Wi125 User Manual. Contact Connor-Winfield Sales for a copy). The serial I/O lines
can be used to access GPS timestamp information, or to verify that the receiver has recovered from an
alarm condition. The reset is used to reset the GPS receiver (if needed).
Features
•Phase locked 10.0 MHz output
•Available with other output Frequencies (ie: 16.384MHz)
•3 selectable references: GPS, External 10MHz or External 1PPS
•Holdover
•Three alarm outputs. (Loss-of-Lock, Holdover and Antenna Fault)
•Serial input and output ports (GPS receiver)
•Master reset
•+3.3 Volt power supply
•Commercial Temp (0-70° C)
•Meets ITU-T G.811 Wander Generation Mask
•Meets ETSI-PRC Wander Generation Mask (w/ OCXO reference)
•MCX GPS Antenna Connection
•Available in 016.384M Frequency Output
•Fixed Position Unit
Bulletin
Revision
Date
Issued By
SG157
01
27 May 11
ENG
Functional Block Diagram
Figure 1
OCXO
or
TCXO
REFERENCE
FR125 Module
SERIAL OUTPUT (A, B, C)
MCX
Connector
BOOT SEL
HOLDOVER STATUS
LOCK STATUS
ANTENNNA FAULT STATUS
Wi125
(GPS Receiver)
SERIAL IN
(A, B, C)
GPS REF
10 MHz REF
DPFD
1 PPS REF
RESET
SYNC 1 CONTROL
SYNC 2 CONTROL
CPLD
ANALOG
FILTER
LOW JITTER
VCXO
or
OCVCXO
1/N
DRIVER
33Ω
DISABLE
JTAG
(Programming Only)
DRIVER
&
TRANSLATION
FR125 Data Sheet #: SG157
Page 2
10 MHz CMOS
OUTPUT
10 MHz SINE
OUTPUT
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Typical Application
FR125
Module
NU
Figure 2
FR125 Data Sheet #: SG157
Page 3
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Pin Description
Table 1
Pin #
Pin Name
Description
1
TXC
RS-232 communication transmit signal for UART2 (Optional)
2
TXB
RS-232 communication transmit signal for UART1 (Optional)
3
TXA
RS-232 communication transmit signal for UART0 (Optional)
4
GND
5
RXC
RS-232 communication receive signal for UART2 (Optional)
6
RXB
RS-232 communication receive signal for UART1 (Optional)
7
RXA
RS-232 communication receive signal for UART0 (Optional)
8
*Bootsel
9
10MHz Ref Input
10
*Reset
11
GND
12
1PPS Ref Input
13
GND
14
Antenna Supply Voltage
15
GND
16
VCC1
Supply voltage for GPS timing circuitry.
17
VCC2
Supply voltage for noise clean-up and interfacing circuitry. 18
GND
19
SYNC1 Control
Lock mode control signal 1. See Table 4 for functional description. Default state is pulled high internally.
20
SYNC2 Control
Lock mode control signal 2. See Table 4 for functional description. Default state is pulled high internally.
21
*Disable
22
Unused
23
Holdover Status
24
Lock Status
25
Antenna Fault Status
26
Unused
27
GND
28
10MHz CMOS Output*
29
Unused
30
Unused
31
GND
32
10MHz SINE Output*
Normally HIGH - Only pulled low for RS-232 re-programming of GPS software. Default state is pulled high internally.
External LVCMOS 10.0MHz reference (Optional). Default state is pulled high internally.
Hardware Reset for the GPS timing circuitry. Pull low to reset. Default state is pulled high internally.
External LVCMOS 1PPS reference (Optional). Default state is pulled high internally.
Antenna Supply Voltage. Limit continuous current to 45mA Max.
Open/High = enabled outputs. Pull low to disable the 10MHz CMOS and SINE outputs. Default state is pulled high internally.
High= Unit is in Holdover
High= Unit is locked to selected reference.
High= A fault has been detected on Pin 14 (Antenna Supply Voltage)
10MHz low jitter CMOS output
10MHz AC coupled low jitter SINE output
Note: Other frequencies (ie: 16.384 MHz) available upon request.
FR125 Data Sheet #: SG157
Page 4
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Absolute Maximum Rating
Table 2
Symbol
Parameter
Minimum
Maximum
Units
N otes
VCC
Power Supply Voltage
-0.3
3.7
Volts
1
VIN
Input Voltage
-0.3
4.6
Volts
1
VPREAMP
Antenna Supply Voltage
2.7
13.2
Volts
1
TS
Storage Temperature
-30
80
°C
1
Operating Specifications
Table 3
Symbol
Parameter
Minimum
Nominal
Maximum
Units
VCC1
Supply Voltage 1
ICC1
Supply Current 1
with TCXO
with OCXO
VCC2
Supply Voltage 2
ICC2
Supply Current 2
with VCXO
with VCOCXO TO
Temperature Range
tJTOL
tAQ_GPS
3.135
3.3
3.465
V
.200
.480
.300
1.2
A
A
3.135
3.3
3.465
V
2
.040
.380
.75
1.0
A
A
0
70
°C
Input Jitter Tolerance
30
ns
GPS Input Acquisition Time
TCXO
OCXO
120
150
sec
sec
3
3
tAQ_EXT
External Input Acquisition Time
VCXO
OCVCXO
90
120
sec
sec
3
3
4
5
Oscillator Performance
PLL Option:
FCAP
Notes
Capture/Pull-in Range
VCXO
±50 ppm
OCVCXO
±45 ppb
FBW
Jitter Filter Bandwidth
6 Hz Typ.
0.1 Hz Typ.
DC
Duty Cycle
45/55%
45/55%
RMS
RMS Phase Noise
10Hz - 2MHz 12kHz - 2MHz 20 ps Typ.
0.5 ps Typ.
1 ps Typ.
0.6 ps Typ.
Holdover/Wander Generation Performance
Reference Option:
TCXO
OCXO
TSTA
Temperature Stability
±0.5 ppm
±20 ppb
VSTA
Vcc Stability 0.1 ppm
±5 ppb
ADAILY
Daily Aging
TBD
2 ppb
AYEARLY
Yearly Aging 2 ppm 80 ppb
Wander Generation Specification
ITU-T G.811
ETSI-PRC
NOTES:
1. Stresses beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the module. These are stress ratings only and functional operation of the device at these or any other
conditions beyond those indicated under “Operating Specifications” is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability.
2. Requires external regulation and supply decoupling
3. Cold Power-up
4. Holdover will be re-calculated with each successful lock. Yearly aging represents 1 continous year in Holdover.
5. Relative to 25°C
FR125 Data Sheet #: SG157
Page 5
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Mode Control Table
Table 4
* Note: Holdover is not supported in this mode; loss of the 10MHz reference will rail the
PLL output until the reference returns or another mode is selected.
Input And Output Characteristics
Table 5
LVCMOS Inputs and Outputs
Symbol
Parameter
Minimum
Maximum
Units
VIH
VIL
High Level Input Voltage
1.7
4.0
V
Low Level Input Voltage
-0.5
0.8
V
VOH
High Level Output Voltage
2.4
V
VOL
Low Level Output Voltage
0.4
V
Notes
Sine Output (Pin 32)
Symbol
Parameter
Load
Output Power
Total Harmonic Distortion
Typical
50
9
2.2
Units
Notes
ohms
dBm
%
GPS Receiver Specifications
Table 6
Parameter
Specifications
Acquisition/Tracking Sensitivity
-155dBm/-156dBm
Notes
Acquisition Time:
Hot Start w/ Network Assist Outdoor: <2 sec Indoor(-148dBm) <5 sec
Stand Alone
Supported Protocols
Cold <45 sec Warm: <38 sec
Hot: <5 sec Re-acquisition: <1sec (90% confidendce)
Network Assist, NMEA 0183
Reset Generation (I/O pin 10 - RESET)
The power-on-reset for the FR125 is generated on-board. If it is desired to extend the power-on-reset signal or provide a manual reset
of the GPS receiver, pull this signal low.
FR125 Data Sheet #: SG157
Page 6
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Antenna Requirements
Table 7
Parameter
Notes
The FTS125 antenna connector is an MCX (female)
The antenna supply voltage provided to Pin 14 must be within the range of 2.7 to 13.2V (AMR); the antenna must be able to operate at this voltage
The antenna’s continuous current draw must be <=45mA
The antenna must have a full sky view for optimal receiver performance
An active antenna with a minimum 10dB gain (including cable loss) should be used
Standard 125 Series models are designed for fixed position operation only. Contact Connor-Winfield Sales for mobile application model offerings
Phase Noise
Figure 2
Phase Noise:
Offset Frequency (Hz)
COO (dBc/Hz)
CTV (dBc/Hz)
10
-105
-70
100
-132
-105
1k
-145
-135
10k
-150
-145
100k
-152
-152
1M
-154
-158
FR125 Data Sheet #: SG157
Page 7
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Allan Variance – CTV
Figure 3
Allan Variance – COO
Figure 4
FR125 Data Sheet #: SG157
Page 8
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Wander Generation Plot – CTV versus G.811 Wander Generation Mask
Figure 5
100,000
10,000
MTIE (ns)
1,000
100
10
1
0.01
0.10
1.00
10.00
100.00
1,000.00
10,000.00
100,000.00
1,000,000.00
Observation Interval (sec)
Wander Generation Plot – COO versus ETSI-PRC Wander Generation Mask
Figure 6
10000
MTIE (ns)
1000
100
10
1
0.1
1
10
100
1000
Observation Interval (sec)
FR125 Data Sheet #: SG157
Page 9
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
10000
100000
Soldering and Cleaning Recommendations
Hand solder, leaded wave solder, and lead-free wave solder processes are recommended for attaching the FR125 after reflow
processes are complete. Since the FR125 does not have hermetic enclosure, hand cleaning the leads is recommended and the
module should not be completely immersed.
Package Dimensions
Figure 7
Recommended Footprint Dimensions
Figure 8
0.038"
Hole
Thru All
x32
0.065"
Pad
x32
FR125
Dimensions
and
Keepout Area
Top View
FR125 Data Sheet #: SG157
Page 10
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
Ordering Information
Ex: FR125-COO-010.0MHz
FR125
C
Temp Range
O
Wi125 Reference
O
PLL Oscillator
C = 0-70degC
O = OCXO
O = OCVCXO *
T = TCXO
V = VCXO
* CTO Option is not available
** Other output frequencies (ie: 16.384MHz) available upon request.
FR125 Data Sheet #: SG157
Page 11
Rev: 01
Date: 05/27/11
© Copyright 2011 The Connor-Winfield Corp. All Rights Reserved Specifications subject to change without notice
10.0M Output Frequency**
2111 Comprehensive Drive
Aurora, Illinois 60505
Phone: 630- 851- 4722
Fax: 630- 851- 5040
www.conwin.com
Revision
Date
Note
A00
A01
P00
P01
P02
P03
P04
P05
P06
P07
00
01
2/27/08
6/19/08
8/19/08
8/26/08
9/12/08
11/13/08
12/03/08
11/05/09
12/10/09
01/08/10
06/16/10
05/27/11
Advance Informational Release
Temperature Range Edit
Edit to Preliminary from Advanced
Edits to temperature
Indoor Temp Revision
Updated Block Diagram
MCX Info added & Block Diagram Update
New Frequency Output
Antenna Requirements & Typical App Drawing
Fixed Unit Clarification & GPS Reference Information
125 Series Update and revised to release
Updated Block Diagram to Wi125 Receiver & Soldering Recommendations