Jackson Labs LC_XO, Manual

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Revision 08/29/12 B
LC_XO Low Cost Ultra Small 1x1 inch GPSDO Module Spec

0.97 X 0.97 X 0.5 inch Module with
pins

< 1 Min. Crystal Warm Up

50 Channel WAAS GPS Receiver

Very Low Power, TCXO or OCXO

PRELIMINARY SPECIFICATION
TYP. ELECTRICAL SPECIFICATIONS:
Module Specification:
1 PPS Accuracy ±50ns to UTC RMS (1-Sigma) GPS Locked
Holdover Stability <±20us over 3 Hour Period @+25
°
C (No Motion, OCXO)
1 PPS Output 3.3VDC CMOS
Serial Control SCPI-99 TTL Level, GPS NMEA Output
GPS Frequency L1, C/A 1574MHz
GPS Antenna Active or Passive
GPS Receiver 50 Channels, Mobile, SBAS WAAS, EGNOS, MSAS capable
Sensitivity Acquisition –142 dBm, Tracking -158 dBm
GPS TTFF Cold Start - <45 sec, Warm Start – 1 sec, Hot Start - 1 sec
ADEV 10Ks <5E-012 (OCXO, GPS Locked, 25
°
C, no motion)
TTL Alarm Output GPS LOCK indicator
Warm Up Time / Stabilization Time <5 min at +25°C to 1E-08 Accuracy
Supply Voltage (Vdd) 3.3V Single-Supply only (5V internally generated and filtered)
Power Consumption 0.7W with OCXO, 0.5W with TCXO
Operating Temperature 0°C to +60°C, -20C to +75C optional
Storage Temperature -45°C to +85°C
Additional Features
Firmware field-upgradable, external 1PPS input, status LEDs, compatible
to GPSCon, SNTP, GPSD, and Z38xx software applications, full NMEA
Oscillator Specification (OCXO):
Frequency Output 10MHz CMOS 5Vpp (3.3Vpp optional)
10MHz Retrace ±2E-08 After 1 Hour @ +25°C
Frequency Stability Over Temperature (Unlock Condition) ±2.5E-08 (OCXO) ±7.5E-08 (TCXO)
Output Amplitude 5Vpp CMOS
OCXO Warm Up Time < 1 min @ +25°C
Phase Noise (with 33uF or larger cap on 5V_Output pin 6)
TCXO OCXO
1Hz -65dBc/Hz -75dBc/Hz
10Hz -102dBc/Hz -110dBc/Hz
100Hz -132dBc/Hz -132dBc/Hz
1kHz -148dBc/Hz -142dBc/Hz
10kHz -152dBc/Hz -145dBc/Hz
100KHz <-155dBc/Hz <-150dBc/Hz
Connections: Connector Type:
1PPS Output, 10MHz Output, power, serial communication, system
status, NMEA, 1PPS in, ISP mode enable, antenna input 100 mil spacing on pins, can be soldered, or plugged into a socket, gold-
plated pins
Jackson Labs Technologies, Inc., 475 Alberto Way, Suite 120, Los Gatos, CA 95032
Phone: (408) 354-7888, Fax: (408) 354-7880, www.jackson-labs.com
sales@jackson-labs.com