Si590/591
Rev. 1.0 7
3. Ordering Information
The Si590/591 XO supports a variety of options including frequency, temperature stability, output format, and V
DD
.
Specific device configurations are programmed into the Si590/591 at time of shipment. Configurations can be
specified using the Part Number Configuration chart below. Silicon Laboratories provides a web browser-based
part number configuration utility to simplify this process. Refer to www.silabs.com/VCXOPartNumber to access this
tool and for further ordering instructions. The Si590 and Si591 XO series are supplied in an industry-standard,
RoHS compliant, 6-pad, 5 x 7 mm package. The Si591 Series supports an alternate OE pinout (pin #1) for
LVPECL, LVDS, and CML output formats. See Tables 9 and 10 for the pinout differences between the Si590 and
Si591 series.
Figure 1. Part Number Convention
59x
X
XXXMXXX
X
1
st
Option Code
V
DD
Output Format Output Enable Polarity
A 3.3 LVPECL High
B 3.3 LVDS High
C3.3CMOS High
D3.3CML High
E 2.5 LVPECL High
F 2.5 LVDS High
G2.5CMOS High
H2.5CML High
J 1.8 CMOS High
K1.8CML High
M 3.3 LVPECL Low
N 3.3 LVDS Low
P 3.3 CMOS Low
Q 3.3 CML Low
R 2.5 LVPECL Low
S 2.5 LVDS Low
T 2.5 CMOS Low
U 2.5 CML Low
V 1.8 CMOS Low
W 1.8 CML Low
Note
:
CMOS available to 160 MHz.
D
G R
Frequency (e.g., 148M352 is 148.352 MHz)
Available frequency range is 10 to 810 MHz. The position of “M” shifts
to denote higher or lower frequencies. If the frequency of interest
requires greater than 6 digit resolution, a six digit code will be
assigned for the specific frequency.
Tape & Reel Packaging
Blank = Trays
Operating Temp Range (°C)
G –40 to +85°C
Part Revision Letter
590 or 591 XO
Product Family
Example P/N: 590BB148M352DGR is a 5 x 7 XO in a 6 pad package. The frequency is 148.352 MHz, with a 3.3 V supply, LVDS output, and
Output Enable active high polarity. Overall stability is specifed as ±50 ppm. The device is specified for –40 to +85 °C ambient temperature
range operation and is shipped in tape and reel format.
2
nd
Option Code
Code Total Stablility (ppm, max, ±) Temperature Stablility (ppm, max, ±)
A 100 50
B 50 25
C 30 20
D 20 7
