DS1086U+T Maxim Integrated, DS1086U+T Datasheet - Page 7

• Manufacturer Part Number: DS1086U+T
• Description: Programmable Oscillators 5V SPRD OUTPUT OSC
• Manufacturer: Maxim Integrated
• Series: DS1086r

Specifications of DS1086U+T

• Rohs: yes
• Part # Aliases: 90-1086P+000

Figure 1. Clock Spectrum Dither Comparison
DITHERED 260kHz TO
133MHz OUTPUT
DECOUPLING CAPACITORS
PIN
1
2
3
4
5
6
7
8
(0.1µF and 0.01µF)
V
-10
-15
-20
-25
-30
-35
-40
CC
-5
Processor-Controlled Mode
0
90
DS1086 4% DITHER
OUT
SPRD
V
GND
CC
CLOCK SPECTRUM COMPARISON
NAME
SPRD
GND
OUT
PDN
SDA
V
SCL
OE
CRYSTAL OSC
_______________________________________________________________________________________
CC
(9kHz BW, PEAK DETECT)
91
DS1086
FREQUENCY (MHz)
92
Oscillator Output
Dither Enable. When the pin is high, the dither is enabled. When the pin is low, the dither is disabled.
Power Supply
Ground
Output Enable. When the pin is high, the output buffer is enabled. When the pin is low, the output is
disabled but the master oscillator is still on.
Power-Down. When the pin is high, the master oscillator is enabled. When the pin is low, the master
oscillator is disabled (power-down mode).
2-Wire Serial Data. This pin is for serial data transfer to and from the device. The pin is open drain
and can be wire-OR’ed with other open-drain or open-collector interfaces.
2-Wire Serial Clock. This pin is used to clock data into the device on rising edges and clock data out
on falling edges.
DS1086 NO DITHER
93
PDN
SCL
SDA
OE
4.7kΩ
94
Spread-Spectrum EconOscillator
V
V
CC
CC
95
4.7kΩ
2-WIRE
INTERFACE
Figure 2. Temperature Variation Over Frequency
*SDA AND SCL CAN BE CONNECTED DIRECTLY HIGH IF THE DS1086 NEVER NEEDS
TO BE PROGRAMMED IN-CIRCUIT, INCLUDING DURING PRODUCTION TESTING.
PROCESSOR
XTL1/OSC1
XTL2/OSC2
MICRO-
FUNCTION
-0.5
-1.0
-1.5
-2.0
2.0
1.5
1.0
0.5
0
DITHERED 260kHz TO
66.00
133MHz OUTPUT
DECOUPLING CAPACITORS
N.C.
MAXIMUM TEMPERATURE VARIATION
(0.1µF and 0.01µF)
vs. MASTER FREQUENCY
82.75
V
CC
FREQUENCY (MHz)
Stand-Alone Mode
OUT
SPRD
V
GND
CC
99.50
Pin Description
DS1086
116.25
133.00
SCL*
SDA*
PDN
OE
V
CC
7