DS1086LU-222+ Maxim Integrated, DS1086LU-222+ Datasheet - Page 8

• Manufacturer Part Number: DS1086LU-222+
• Description: Programmable Oscillators SS OSC 22.1184Mhz
• Manufacturer: Maxim Integrated
• Series: DS1086r

Specifications of DS1086LU-222+

• Rohs: yes
• Package / Case: uSOP-8
• Frequency: 130 KHz to 66.6 MHz
• Supply Voltage: 2.7 V to 3.6 V
• Load Capacitance: 15 pF
• Minimum Operating Temperature: - 40 C
• Maximum Operating Temperature: + 85 C
• Product: Programmable
• Part # Aliases: 90-1L86U+222

3.3V Spread-Spectrum EconOscillator
DS1086L
Figure 1. Clock Spectrum Dither Comparison
8
DITHERED 260kHz TO
133MHz OUTPUT
DECOUPLING CAPACITORS
PIN
1
2
3
4
5
6
7
8
(0.1μF and 0.01μF)
V
-10
-20
-30
-40
-50
-60
-70
-80
-90
CC
0
Processor-Controlled Mode
43
OUT
SPRD
V
GND
NAME
CC
SPRD
GND
OUT
PDN
SDA
(12OkHz BW, SAMPLE DETECT)
V
SCL
OE
CC
SPECTRUM COMPARISON
45
8%
DS1086L
FREQUENCY (MHz)
2%
Oscillator Output. The output frequency is determined by the OFFSET, DAC, and prescaler registers.
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-ORed 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.
47
fo = 50MHz
DITHER RATE = fo/4096
0.5%
49
PDN
SDA
SCL
OE
4.7kΩ
51
V
V
NO
SPREAD
CC
CC
53
4.7kΩ
2-WIRE
INTERFACE
Figure 2. Temperature Variation Over Frequency
*SDA AND SCL CAN BE CONNECTED DIRECTLY HIGH IF THE DS1086L NEVER NEEDS
TO BE PROGRAMMED IN-CIRCUIT, INCLUDING DURING PRODUCTION TESTING.
FUNCTION
XTL1/OSC1
XTL2/OSC2
μP
-1%
-2%
-3%
-4%
-5%
3%
2%
1%
0
DITHERED 130kHz TO
33
66.6MHz OUTPUT
DECOUPLING CAPACITORS
N.C.
MAXIMUM THERMAL VARIATION vs.
MASTER OSCILLATOR FREQUENCY
36 39 42
(0.1μF and 0.01μF)
V
CC
MASTER FREQUENCY (MHz)
45
Stand-Alone Mode
OUT
SPRD
V
GND
CC
48 51 54
Pin Description
DS1086L
57
60
SCL*
SDA*
PDN
63
OE
Maxim Integrated
66
V
CC