VTM3 series
Voltage Controlled Temperature Compensated Crystal Oscillator
Features
• Small 3.2x2.5 package size • Clipped Sine Wave Output • Output Frequencies to 45 MHz • Fundamental Crystal Design • Optional VCXO Function available • Gold over nickel contact pads
• Hermetically Sealed Ceramic SMD package The VTM3, VCTXCO
• Product is compliant to RoHS directive and fully compatible with lead free assembly
Applications
• GPS • WiMAX, Wi-Fi, Wi-LAN • Seismic Exploration • Point to point radios • Broadband Access • Test Equipment • PDA’s
Description
Vectron’s VTM3 Temperature Compensated Crystal Oscillator (TCXO) is a quartz stabilized, clipped sine wave output, temperature compensated oscillator, operating off either 2.8, 3.0, or 3.3 volt supply.
Vectron International 267 Lowell Road, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTM3 Data Sheet
Performance Characteristics
Table 1. Electrical Performance Parameter Frequency Typical Supply Voltage1 Ordering option, see last page Supply Current 8.000 MHz to < 20.000 MHz 20.000 MHz to < 32.00 MHz 32.000 MHz to 45.00 MHz Output Level2 Output Load Control Voltage Impedance Control Voltage to reach pull All options (3.3,3.0 and 2.8V) Pull Range Ordering option, see last page Temperature Stability Ordering option, see last page. Initial Accuracy, “No Adjust” option Power Supply Stability Load Stability Aging Operating temperature Ordering option, see last page Phase Noise, 12.000MHz 10 Hz offset 100 Hz offset 1 kHz offset 10 kHz offset 100 kHz offset 1 MHz offset 5 MHz offset Start-up time Symbol fO Min 8.000 Maximum 45.000 2.8, 3.0, or 3.3 Typical Units MHz Vdc mA 1.5 2.0 2.5 Vp/p ZVc 0.8 10K II 10pf 500 0.5 TPR ±5, ±8, ±10, ±15 ±0.5 to ±5.0 ±0.5 2.5 ppm ppm Kohm V V
IDD
±1.0 ppm ±0.2 ppm ±0.2 ppm ±1.0 ppm/year 0/55, -10/60, -20/70, -30/80, -40/85 °C dBc/Hz -89 -117 -135 -148 -153 -154 -155 2 ms
1. A 0.01uF and a 0.1uF capacitor should be located as close to the supply as possible (to ground) is recommended. 2. Output is DC coupled.
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTM3 Data Sheet
Figure 2. Clipped Sine Wave Output
VCXO Functional Description
VCXO Feature: The VTM3 can be ordered with a VCXO function for applications where it will be used in a PLL, or the output frequency needs fine tune adjustments. This is a high impedance input, 0.5 Mohm, and can be driven with an op-amp or terminated with adjustable resistors etc. Pin 1 should not be left floating on the VCXO optional devices. “No Adjust” Feature: In applications where the VTM3 will not be used in a PLL, or the output frequency does not fine tune adjustments, the best device to use would be a VTM3-x0xx. By using the “no adjust” option, the circuit is simplified as Vc does not need to adjusted or set to a predetermined voltage and pin 1 should be grounded (pin 1 can be left open but should not be set to a voltage such as the supply).
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTM3 Data Sheet Outline Diagrams, Pad Layout and Pin Out
Pin 1, Pin 2, Pin 3, Pin 4, Pin 5, Pin 6, Pin 7, Pin 8,
Ground or VC NC Ground Output NC VCC NC NC
Contact Pads are gold over nickel Devices will be marked with the frequency Pin 2,5,6,7,8 are used to program and adjust the TCXO during manufacturing and should be left open; do not terminate these to the supply voltage and are a “make no connection” pad. Figure 3, Package drawing
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VTM3 Data Sheet
3.2±0.2
2 .5 ±0 .2
M RKING A
1.0 max
#1
# 2
0 .65
Pin 1, Ground or VC PinTERMINAL 2, Ground CONNECTION Pin 3, Output TCXO VCTCXO Pin 4, #1 VCC GND Vcont
#2 GND OUTPUT Vcc GND OUTPUT Vcc #3 #4
#4 1.95 #3 0.55
0.85
1.0
1 .25
2.6
LA ND PATT ERN
Contact Pads are gold over nickel Devices will be marked with the frequency Figure 4, Package drawing for ±0.5ppm over -30/80°C and
