IQD Frequency Products Ltd, Station Road, Crewkerne, Somerset TA18 8AR, United Kingdom
+44 (0)1460 270200; Web: www.iqdfrequencyproducts.com
Americas - California, +1 (0)650 798 5047; Asia Pacic - Taiwan, +886 (0)2 8758 2283
Registration No. FS566088
IQMS-950, -952 SERIES MEMS OSCILLATORS
ISSUE 2; 1 NOVEMBER 2010 - RoHS 2002/95/EC
Description
▪LVDS output MEMS oscillator in a plastic package
▪Factory programmable for a fast lead time
▪Stock parts listed at the beginning of this chapter
Frequency Ranges
▪1 to 220MHz
▪220 to 800MHz (contact IQD sales ofces)
Output Compatibility & Load
▪LVDS
▪Differential Output Voltage (VOD) 0.25V min, 0.35V typical
▪Offset Voltage (Vos) 1.2V typical
▪Output Load 100Ω
Supply Voltages
▪3.3V IQMS-950
▪2.5V IQMS-952
Frequency Stabilities
▪±10ppm, ±15ppm ±20ppm, ±25ppm, ±50ppm over the
operating temperature range (inclusive of tolerance, supply
voltage variation, load variation)
Note: ±10ppm only avaible over 0 to 70°C
Operating Temperature Ranges
▪ 0 to 70°C
▪–20 to 70°C
▪–40 to 85°C
Storage Temperature Range
▪–65 to 150°C
Tri-State Operation (TS option)
▪Logic ‘1’ to pad 1 (≥70%VS) enables oscillator output
▪Logic ‘0’ to pad 1 (≤30%VS) disables oscillator output; when
disabled the oscillator output goes to the high impedance
state
▪No connection to pad 1 enables oscillator output
Standby (ST option)
▪Logic ‘1’ to pad 1 (≥70%VS) enables oscillator output
▪Logic ‘0’ to pad 1 (≤30%VS) disables oscillator output; when
disabled the oscillator output goes to the high impedance
state, oscillation stops
▪No connection to pad 1 enables oscillator output
▪Standby Current: 25µA typcial @3.3V
15µA typcial @2.5V
RMS Period Jitter @ 200MHz
▪1.8ps typical at 3.3V
▪2.4ps typical at 2.5V
RMS Phase Jitter @ 200MHz, BW 1MHz to 20MHz
▪0.7ps typical
Outline (mm)
123
4
Pad Connections
1. TS / ST
3. GND
4. Output +
6. +V
S
5. Output -
Solder Pad Layout
2. N/C
Underside View
5
6
5.0±0.1
3.2±0.1
0.75±0.5
0.9
2.54
0.8
0.64 0.9
1.2
2.2
2.54
Ageing
▪±1ppm typ in 1st year at 25°C
Environmental
▪Shock: MIL-STD-883F, Method 2002
▪Vibration: MIL-STD-883F, Method 2007
▪Temperature Cycle: MIL-STD-883F, Method 1010
▪Solderability: MIL-STD-883F, Method 2003
▪MSL level 1
Packaging
▪Loose in bulk pack, 100pcs per bag
▪Tape and reel in accordance with EIA-481-D, 1kpcs per reel
(please see pages 372 & 373)
Ordering Information (*minimum required)
▪Frequency*
▪Model*
▪Output
▪Frequency Stability (over operating temperature range)*
▪Operating Temperature Range*
▪Supply Voltage
▪TS/ST Option*
Example
▪40.00MHz IQMS-950
LVDS ±25ppm –40 to 85C 3.3V ST
IQD Frequency Products Ltd, Station Road, Crewkerne, Somerset TA18 8AR, United Kingdom
+44 (0)1460 270200; Web: www.iqdfrequencyproducts.com
Americas - California, +1 (0)650 798 5047; Asia Pacic - Taiwan, +886 (0)2 8758 2283
Registration No. FS566088
Electrical Specications - maximum limiting values
Frequency Range Frequency Stability Supply Voltage Supply Current
(no load)
Rise Time (tr)
(20-80%)
Fall Time (tf)
(80-20%)
Duty Cycle Model Number
1.0 to 220.0MHz ±10ppm
±15ppm
±20ppm
±25ppm
±50ppm
3.3V±10%79mA 325ps 325ps 45/55% IQMS-950
2.5V±10%76mA
IQMS-952
Note: For other frequency/specification combinations, please contact our sales offices
Output Waveform
V
OD
Output 2
Output 1
V
os
(crossing point)
V
os
80%
20%
T
r
T
f
Test Circuit
Power
Supply
A
V
0.1 F
6
5
4
3
2
1
Enable/
Disable
Oscilloscope
Frequency
Counter
100R
N/C
µ
Probe
Probe
