SI550 SILABS, SI550 Datasheet - Page 2

• Manufacturer Part Number: SI550
• Description: VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR
• Manufacturer: SILABS

Si 550
1. Electrical Specifications
Table 1. Recommended Operating Conditions
Table 2. V
2
Supply Voltage
Supply Current
Output Enable (OE)
Operating Temperature Range
Notes:
Control Voltage Tuning Slope
Control Voltage Linearity
Modulation Bandwidth
V
Nominal Control Voltage
Control Voltage Tuning Range
Notes:
C
1. Selectable parameter specified by part number. See Section 3. "Ordering Information" on page 8 for further details.
2. OE pin includes a 17 kΩ pullup resistor to VDD. Pulling OE to ground causes outputs to tristate.
1. Positive slope; selectable option by part number. See Section 3. "Ordering Information" on page 8.
2. For best jitter and phase noise performance, always choose the smallest K
3. K
4. BSL determined from deviation from best straight line fit with V
Input Impedance
requirements. See “AN266: VCXO Tuning Slope (K
determined with V
V
variation is ±28% of typical values.
C
Parameter
Parameter
Control Voltage Input
1
2
C
4
ranging from 10 to 90% of V
1,2,3
Symbol
Symbol
V
V
Z
CNOM
L
BW
I
T
K
V
DD
DD
VC
VC
A
V
C
Preliminary Rev. 0.3
10 to 90% of V
Test Condition
Output enabled
Test Condition
TriState mode
DD
3.3 V option
2.5 V option
1.8 V option
Incremental
.
V
), Stability, and Absolute Pull Range (APR)” for more information.
@ f
BSL
V
V
IH
IL
O
C
DD
ranging from 10 to 90% of V
0.75 x V
Min
–10
500
2.97
2.25
1.71
9.3
Min
V
–40
–5
—
—
0
—
—
—
that meets the application’s minimum APR
DD
3/8 x V
10.0
Typ
135
180
45
90
±1
±5
Typ
—
3.3
2.5
1.8
90
60
—
—
—
DD
DD
. Incremental slope
Max
10.7
V
Max
3.63
2.75
1.89
+10
0.5
+5
—
—
—
85
—
—
—
DD
ppm/V
Units
Units
kHz
mA
kΩ
ºC
%
V
V
V
V