M685
D
UAL SAW, SELECTABLE
F
REQUENCY VCSO
P r e l i m i n a r y I n f o r m a t i o n
E
LECTRICAL
SPECIFICATIONS FOR M685-02
DC Characteristics for M685-02
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq.’s = 622.08, 669.3266MHz, Outputs terminated into 180
Ω to ground
Symbol Parameter
Power Supply VCC Positive Supply Voltage
Pin
Min
2.97
Typ
3.3
Max
3.63
Unit
V
VCC
VIN
90
125
3.3
ICC
VIN
Power Supply Current
Input Control Voltage Range
VIN Input Impedence
Input High Voltage
mA
V
0
Control
Voltage
100
kΩ
V
2
Frequency
1
VIH
VIL
V + 0.3
cc
Select
0.8
Input Low Voltage
-0.3
V
IIH
IIL
R
Input High Current
5
µA
µA
kΩ
F_SEL
Input Low Current
-150
51
Internal Pull-down Resistor
pulldown
Differential
Outputs
VOH
VOL
VP
Output High Voltage
Output Low Voltage
Peak to Peak Output Voltage
Output Current
V
V
-
-
0.98
1.95
V
-
-
0.75
V
cc
cc
cc
cc
V
1.63
V
FOUT, nFOUT
2
0.450
0.625
0.85
20
VP
-P
-P
IOUT
mA
Table 7: DC Characteristics for M685-02
Note 1: Internally pulled down to Logic 0 (Frequency 1) if left unselected.
Note 2: Single-ended measurement. See Figure 3, Output Rise and Fall Time, on pg. 5.
AC Characteristics for M685-02
Unless stated otherwise, VCC = 3.3 Volts + 10%, TA = 0 to 85 oC, VCSO Freq.’s = 622.08, 669.3266MHz, Outputs terminated into 180
Ω to ground
Symbol Parameter
Control Voltage VIN Modulation Bandwidth
Min
Typ
600
Max
Unit Notes
kHz
VIN
Output Center Frequency Range M685-02
500
708
Output
FOUT
APR
MHz
ppm
1
Absolute (Guaranteed) Pull-Range
±120
100
6
fSTAB
LIN
Frequency Stability
Tuning Linearity
ppm p-p At any givin VIN
VIN
= 0.3 to 3.0V
%
Best fit straight line
VIN
=
0.3 to 3.0
V
@
622.08MHz
400
-77
KVCO
VCO Gain
ppm/V
-50
Non-harmonic Spurious
dBc
100Hz Offset
1kHz Offset
-42
-72
Φ n
SSB (single sideband)
Phase Noise, offset
from carrier
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
ps rms
ps rms
%
10kHz Offset
100kHz Offset
1MHz Offset
-102
-127
-146
0.22
0.16
@
622.08MHz
12kHz to 20MHz
50kHz to 80MHz
J(t)
Jitter (rms)
622.08MHz
@
2
45
55
odc
tR
Output Duty Cycle
2
275
275
400
400
Output Rise Time for FOUT, nFOUT
ps
ps
20% to 80
%
%
2
tF
Output Fall Time for FOUT, nFOUT
20% to 80
Table 8: AC Characteristics for M685-02
Note 1: Also fully meets ±50 ppm minimum pull-range specification that is commonly required.
Note 2: See Parameter Measurement Information on pg. 5.
M685 Datasheet Rev 0.7
4 of 7
Revised 29Jul2009
Integrated Device Technology, Inc. ● Communication Modules ● www.idt.com ● tel (508) 852-5400