參數(shù)資料
型號: ABE0131SC
廠商: ABRACON CORP
元件分類: XO, clock
英文描述: CRYSTAL OSCILLATOR, CLOCK, 10 MHz - 30 MHz, CMOS/TTL OUTPUT
封裝: SOIC-8
文件頁數(shù): 3/5頁
文件大小: 52K
代理商: ABE0131SC
ABE0131
Low EMI Spread Spectrum Multiplier Clock
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
FUNCTIONAL DESCRIPTION
Selectable spread spectrum modulation types and magnitudes
The ABE0131 provides selectable spread spectrum modulation type, as well as selectable modulation magnitude.
Selection is made by connecting specific pins to a logical “zero” or “one”, according to the output clock selection
table on page 1.
In order to reduce the number of pins on the chip, the ABE0131 uses pin 2 (XOUT/SD) as a bi-directional pin. The
pin serves as a modulation type and magnitude selector input (SD) upon power-up (see output clock selection
table on page 1), and as XOUT crystal connection as soon as the input has been latched.
Pins 3 (SC0), 4 (SC1), and 7 (SC2) are used as inputs to complete the spread spectrum modulation type and
magnitude selection as shown on the output clock selection table (page 1).
Connecting a selection pin to a logical “one”
All selection pins have an internal pull-up resistor (30k
for pins 3, 4, 7, and 120k for pin 2). This internal pull-
up resistor will pull the input value to a logical “one” by default, i.e. when no connection is made between the pin
and GND. No external pull-up resistor is therefore required for connecting a logical “one” upon power-up.
Connecting a selection pin to a logical “zero”
For an input only pin, i.e. pins 3 (SC0), 4 (SC1), and 7 (SC2), the pin simply needs to be grounded to pull the
input down to a logical “zero”. Pin 2 (XOUT/SD) should be connected to GND thru a 27k
resistor to select a
logical “zero”.
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
conditions 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.
相關(guān)PDF資料
PDF描述
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