3. Ordering Information
. Specific device configurations are programmed into the Si597 at time of shipment. Configurations are
and for further ordering instructions. The Si597 VCXO series is supplied in an industry-standard, RoHS compliant,
Figure 1. Part Number Convention
R = Tape and Reel
Blank = Coil Tape
Operating Temp Range (°C)
G –40 to +85 °C
Device Revision Letter
597 Quad VCXO
Product Family
597 X X XXXXXX D G R
1
st
Option Code
V
DD
Output Format Output Enable Polarity
A 3.3 LVPECL High
B 3.3 LVDS High
C 3.3 CMOS High
D3.3CML High
E 2.5 LVPECL High
F 2.5 LVDS High
G 2.5 CMOS 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.
2
nd
Option Code
Temperature Tuning Slope Minimum APR
Stability Kv (±ppm) for VDD @
Code ± ppm (max) ppm/V (typ) 3.3 V 2.5 V 1.8 V
A 20 380 370 275 200
B 20 185 160 110 80
C 50 185 130 80 50
D 20 125 100 75 40
E20 95 655025
F 50 125 70 45 10
G 50 95 35 20 N/A
H20 45 15N/AN/A
Notes:
1. For best jitter and phase noise performance, always choose the smallest Kv that meets
the application’s minimum APR requirements. Lower Kv options minimize noise
coupling and jitter in real-world PLL designs. See AN266 for more information.
2. APR is the ability of a VCXO to track a signal over the product lifetime. A VCXO with an
APR of ±100 ppm is able to lock to a clock with a ±100 ppm stability over 15 years over
all operating conditions.
3. Nominal Pull range (±) = 0.5 x V
DD
x tuning slope.
4. Minimum APR values noted above include worst case values for all parameters.
6-digit Frequency Designator Code
Four unique frequencies can be specified within the following
frequency range: 10 to 810 MHz. A six digit code will be assigned for
the specified combination of frequencies. Codes > 000100 refer to
VCXOs programmed with the lowest frequency value selected when
FS[1:0] = 00, and the highest value when FS[1:0] = 11. Six digit codes
< 000100 refer to VCXOs programmed with the highest frequency
value selected when FS[1:0] = 00, and the lowest value when FS[1:0]
= 11.
