ABX0235/37/38/39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
PIN DESCRIPTIONS ABX0237/39 (see previous page of ABX0235/38)
Name TSSOP
Pin number
3x3mm QFN
Pin number Type Description
XIN 2 12 I Crystal input. See Crystal Specifications on page 3.
XOUT 3 13 I Crystal output. See Crystal Specifications on page 3.
OE 6 16 I Output enable pin (see OE logic state table on page 1).
GND 7,8,9,10,14 1,2,3,4,8 P Ground.
CLKT 11 5 O
True output LVDS (ABX0239)
(N/C for ABX0237)
CLKC 13 7 O
Complementary output LVDS (ABX0239)
(CMOS out for ABX0237).
SEL0 16 10 I
SEL1 15 9 I
SEL2 5 15 I
SEL3 4 14 I
Multiplier selector pins. These pins have an internal pull-up
that will default SEL to ‘1’ when not connected to GND.
VDD 1, 12 6,11 P Power Supply.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS SYMBOL MIN. MAX. UNITS
Supply Voltage VDD 4.6 V
Input Voltage, dc VI -0.5 VDD+0.5 V
Output Voltage, dc VO -0.5 VDD+0.5 V
Storage Temperature TS -65 150
°C
Ambient Operating Temperature* TA -40 85
°C
Junction Temperature TJ 125
°C
Lead Temperature (soldering, 10s) 260 °C
ESD Protection, Human Body Model 2 kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the
device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other con-
ditions above the operational limits noted in this specification is not implied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. Crystal Specifications
PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
Crystal Resonator Frequency FXIN Parallel Fundamental Mode 12 25 MHz
Crystal Loading Rating CL (xtal) 20 pF
Recommended ESR RE AT cut 30 Ω