Rainbow Electronics DS1091L User Manual
General Description
The DS1091L is a low-cost clock generator that is factorytrimmed to output frequencies from 130kHz to 66.6MHz
with a nominal accuracy of ±0.25%. The device can also
produce a center- or down-dithered spread-spectrum
output with pin-selectable dither magnitude and rate.
Assembled in an 8-pin µMAX package, the DS1091L is
designed to operate with a 3.0V to 3.6V power supply
over the automotive temperature range (-40°C to
+125°C).
Applications
Automotive Infotainment
POS Terminals
LCD Displays
Printers
Industrial Control
Features
♦ Spread-Spectrum Clock Output from 130kHz to
66.6MHz
♦ Operating Temperature Range of -40°C to +125°C
♦ Accuracy of ±1.75% Across Temperature and
Voltage
♦ Factory Trimmed
♦ Center-Dithered (DS1091LA) or Down-Dithered
(DS1091LB) Spread-Spectrum Output
♦ Pin-Selectable Center-Dither Magnitude of 0%,
±1%, ±2%, or ±4%
♦ Pin-Selectable Down-Dither Magnitude of 0%, -2%,
-4%, or -8%
♦ Pin-Selectable Dither Rate
♦ 3.0V to 3.6V Supply Operation
♦ Lead-Free 8-Pin µMAX Package
DS1091L
Automotive Temperature Range
Spread-Spectrum Econoscillator
______________________________________________
Maxim Integrated Products
1
Pin Configuration
8
3
4
2
1
OUT
DR
8 μMAX
DS1091L
V
CC
V
CC
f
OUT
DECOUPLING
CAPACITORS
7
6
5
SEL0
V
CC
N.C.
N.C.
SEL1
GND
V
CC
Typical Operating Circuit
Rev 0; 9/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
+
Denotes lead-free package.
xxx
Denotes factory-programmed custom frequencies.
Email Custom_EconOscillators_Info@dalsemi.com for information/questions concerning custom frequencies.
Ordering Information
µMAX
8 µMAX
PART TEMP RANGE PIN-PACKAGE SPREAD SPECTRUM OUTPUT FREQUENCY (MHz)
DS1091LUA+027 -40°C to +125°C 8 µMAX Center 27.0
DS1091LUA+033 -40°C to +125°C 8 µMAX Center 33.3
DS1091LUA+066 -40°C to +125°C 8 µMAX Center 66.6
DS1091LUA+xxx -40°C to +125°C 8 µMAX Center Custom (Contact Factory)
DS1091LUB+027 -40°C to +125°C 8 µMAX Down 27.0
DS1091LUB+033 -40°C to +125°C 8 µMAX Down 33.3
DS1091LUB+066 -40°C to +125°C 8 µMAX Down 66.6
DS1091LUB+xxx -40°C to +125°C 8 µMAX Down Custom (Contact Factory)
TOP VIEW
1
OUT
2
V
CC
3
GND
4
8
DR
7
N.C.
6
DS1091L
μMAX
N.C.
5
SEL0SEL1
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
(TA= -40°C to +125°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage on VCCRelative to Ground.......................-0.5V to +6.0V
Voltage on DR, SEL0, SEL1 Relative
to Ground*..............................................-0.5V to (V
CC
+ 0.5V)
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature...................See J-STD-020 Specification
DC ELECTRICAL CHARACTERISTICS
(TA= -40°C to +125°C; VCC= +3.0V to +3.6V, unless otherwise noted.)
*
This voltage must not exceed 6.0V.
AC ELECTRICAL CHARACTERISTICS
(TA= -40°C to +125°C; VCC= +3.0V to +3.6V, unless otherwise noted.)
DS1091L
Automotive Temperature Range
Spread-Spectrum Econoscillator
2 _____________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
High-Level Input Voltage
(SEL0, SEL1, DR)
Low-Level Input Voltage
(SEL0, SEL1, DR)
V
V
(Note 1) 3.0 3.3 3.6 V
CC
IH
IL
0.7 x
V
CC
-0.3
V
CC
0.3
0.3 x
V
+
CC
V
V
High-Level Output Voltage (OUT) V
Low-Level Output Voltage (OUT) V
High-Level Input Current
(SEL0, SEL1, DR)
Low-Level Input Current
(SEL0, SEL1, DR)
Supply Current (Active) I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OHIOH
OL
I
IH
I
IL
CC
= -4mA, VCC = 3.0V 2.4 V
IOL = 4mA 0.4 V
VCC = 3.6V 1 µA
VIL = 0 -1 µA
(Note 2) 16 mA
Output Frequency Range f
Power-Up Time t
Load Capacitance C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
OUT
(Note 3) 0.130 66.6 MHz
VCC = 3.3V, TA = +25°C -0.25 0 +0.25
Across TA and V
OUT
0°C to +70°C, across V
(Note 4) 0.1 ms
PU
L
CC
CC
-1.75 +1.75Output Center Frequency Tolerance Δf
-1.2 +1.2
15 50 pF
%
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