Rainbow Electronics DS1091L - Manual (Page 6)

DS1091L
Automotive Temperature Range
Spread-Spectrum Econoscillator
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is a registered trademark of Dallas Semiconductor Corporation.
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Power-Up
Upon the application of power, the DS1091L output is
held in the low state until t
PU
has elapsed. This
removes any possibility of erroneous output transitions
during initial power-up.
DS1091L Frequency Spreading Profile as a
Function of Dither %
Application Information
Power-Supply Decoupling
To achieve best results, it is highly recommended that
decoupling capacitors are used on the IC power-supply
pins. Typical values of decoupling capacitors are 0.01µF
and 0.1µF. Use a high-quality, ceramic, surface-mount
capacitor, and mount it as close as possible to the V
CC
and GND pins of the IC to minimize lead inductance.
Requesting Custom Frequencies
Email [email protected] for
information/questions concerning custom frequencies.
Chip Topology
TRANSISTOR COUNT: 4887
SUBSTRATE CONNECTED TO GROUND
Package Information
For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.
TIME
1
DITHER FREQ
PROGRAMMED f OUT
PROGRAMMED f OUT -
(2%, 4%, OR 8% OF f OUT )
DITHER
AMOUNT
(-2%, -4%,
OR -8%)
IF DITHER AMOUNT = 0%
f OUT
Figure 1B. Down Dithered
TIME
1
DITHER FREQ
PROGRAMMED f OUT +
(1%, 2%, OR 4% OF f OUT )
PROGRAMMED f OUT -
(1%, 2%, OR 4% OF f OUT )
PROGRAMMED f OUT
DITHER
AMOUNT
(±1%, ±2%,
OR ±4%)
IF DITHER AMOUNT = 0%
f OUT
Figure 1A. Center Dithered