XRT8020 データシートの表示（PDF） - Exar Corporation
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XRT8020 Datasheet PDF : 12 Pages
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XRT8020
REV. 1.0.2
PIN DESCRIPTION
650 MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
PIN
NAME
TYPE
DESCRIPTION
1
AVDD
3.3V ±10% Analog Supply for Crystal Oscillator
2
AGND
Analog Ground for Crystal Oscillator
3
XTAL1
I
Crystal pin 1 or external clock input
4
XTAL2
O
Crystal pin 2 (output drive for crystal)
5
AGND
Analog Ground
6
REXT
I
External Bias Resistor (10KΩ to ground)
7
OE
I
Output Enable, Active low (Internal 50KΩ pull-down to ground)
8
PD
I
Power Down, Active High (Internal 50KΩ pull-down to ground)
9
FS1
I
Frequency select "1" (Internal 50KΩ pull-down to ground)
10
FS0
I
Frequency select "0" (Internal 50KΩ pull-up to VDD)
11
AGND
Analog Ground
12
OGND
Output Ground for LVDS outputs
13
OUTN
O
LVDS negative output for 50Ω line
14
OUTP
O
LVDS positive output for 50Ω line
15
OVDD
3.3V ±10% Digital Supply for LVDS Output buffer
16
AVDD
3.3V ±10% Analog Supply
ABSOLUTE MAXIMUM RATINGS
Supply voltage
VIN
Storage Temperature
Operating Temperature
ESD
REXT (±1%)
-0.5 to 6.0 V
-0.5 to 6.0 V
-65°C to + 150°C
-40°C to + 85°C
>2,000 volts
10kΩ
ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
Supply current
Power Save Current
Input Digital High
Input Digital Low
Crystal Frequency
SYMBOL MIN
VDD
3.0
IDD
IDD
VINH
2.0
VINL
15
TYP
MAX UNIT
3.3 3.6
V
CONDITIONS
25
30
mA VDD = 3.3V
6
mA VDD = 3.3V, PD = 1, OEB = 0
V Pins 7, 8, 9, 10
0.8
V Pins 7, 8, 9, 10
27 MHz See Section 2.0 for Crystal Selection
3
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