DS1091LUA-330+ [MAXIM]
Automotive Temperature Range Spread-Spectrum EconOscillatorâ¢; 汽车级温度范围的扩频EconOscillatorâ ?? ¢
| 型号： | DS1091LUA-330+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Automotive Temperature Range Spread-Spectrum EconOscillator⢠|
| 文件： | 总9页 (文件大小：1730K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
General Description
Features
The DS1091L is a low-cost clock generator that is factory
trimmed to output frequencies from 130kHz to 66.6MHz
with a nominal accuracy of 0.ꢀ25. The deꢁice can also
produce a center- or down-dithered spread-spectrum
output with pin-selectable dither magnitude and rate.
S Spread-Spectrum Clock Output from 130kHz to
66.6MHz
S -40°C to +125°C Operating Temperature Range
S
1.ꢀ5ꢁ ꢂccuracꢃ ꢂcroꢄꢄ Temperature and ꢅoltage
®
S Factorꢃ Trimmed
Assembled in an 8-pin µMAX package, the DS1091L
is designed to operate with a 3.0V to 3.6V power supply
oꢁer the automotiꢁe temperature range (-40°C to +1ꢀ2°C).
S Center-Dithered (DS1091LUꢂ) or Down-Dithered
(DS1091LUB) Spread-Spectrum Output
S Pin-Selectable Center-Dither Magnitude of 0ꢁ,
Applications
1ꢁ, 2ꢁ, or 4ꢁ
Automotiꢁe Infotainment
POS Terminals
LCD Displays
S Pin-Selectable Down-Dither Magnitude of 0ꢁ, -2ꢁ,
-4ꢁ, or -8ꢁ
S Pin-Selectable Dither Rate
S 3.0ꢅ to 3.6ꢅ Supplꢃ Operation
S Lead(Pb)-Free, 8-Pin µMꢂX Package
Printers
Industrial Control
Typical Operating Circuit
Custom Frequency Options
Custom frequency options are aꢁailable. See the Ordering
Information or contact the factory by email at custom.
oscillators@maximintegrated.com for more information.
V
CC
f
OUT
DR
OUT
8
7
1
2
V
CC
N.C.
V
CC
DS1091L
DECOUPLING
CAPACITORS
GND
SEL1
N.C.
Ordering Information appears at end of data sheet.
V
CC
3
4
6
5
SEL0
EconOscillator is a trademark and µMAX is a registered trademark of Maxim Integrated Products, Inc.
For related parts and recommended products to use with this part, refer to: www.maximintegrated.com/DS1091L.related
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-5768; Rev 2; 9/11
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
ꢂBSOLUTE MꢂXIMUM RꢂTINGS
Voltage Range on V
Relatiꢁe to Ground .........-0.2V to +6.0V
Operating Temperature Range........................ -40°C to +1ꢀ2°C
Storage Temperature Range............................ -22°C to +1ꢀ2°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+ꢀ60°C
CC
Voltage Range on DR, SEL0, SEL1
Relatiꢁeto Ground................................-0.2V to (V
+ 0.2V)*
CC
Continuous Power Dissipation (T = +70°C)
A
µMAX (derate 4.2mW/°C aboꢁe +70°C) .....................36ꢀmW
*This voltage must not exceed 6.0V.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
RECOMMENDED OPERꢂTING CONDITIONS
(T = -40NC to +1ꢀ2NC, unless otherwise noted.)
A
PꢂRꢂMETER
Supply Voltage
SYMBOL
CONDITIONS
MIN
3.0
TYP
MꢂX
UNITS
V
(Note 1)
3.3
3.6
V
CC
High-Leꢁel Input Voltage
(SEL0, SEL1, DR)
0.7 x
V
+
CC
0.3
V
V
V
IH
V
CC
Low-Leꢁel Input Voltage
(SEL0, SEL1, DR)
0.3 x
V
V
-0.3
IL
CC
DC ELECTRICꢂL CHꢂRꢂCTERISTICS
(V
= +3.0V to +3.6V, T = -40NC to +1ꢀ2NC, unless otherwise noted.)
A
CC
PꢂRꢂMETER
SYMBOL
CONDITIONS
= 3.0V
CC
MIN
TYP
MꢂX
UNITS
High-Leꢁel Output Voltage (OUT)
Low-Leꢁel Output Voltage (OUT)
V
I
I
= -4mA, V
= 4mA
ꢀ.4
V
V
OH
OH
OL
V
0.4
1
OL
High-Leꢁel Input Current
(SEL0, SEL1, DR)
I
V
= 3.6V
FA
IH
CC
Low-Leꢁel Input Current
(SEL0, SEL1, DR)
I
V = 0V
IL
-1
FA
IL
Supply Current (Actiꢁe)
I
(Note ꢀ)
16
mA
CC
Maxim Integrated
2
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
ꢂC ELECTRICꢂL CHꢂRꢂCTERISTICS
(V
= +3.0V to +3.6V, T = -40NC to +1ꢀ2NC, unless otherwise noted.)
A
CC
PꢂRꢂMETER
SYMBOL
CONDITIONS
MIN
0.130
-0.ꢀ2
-1.72
-1.ꢀ
TYP
MꢂX
66.6
+0.ꢀ2
+1.72
+1.ꢀ
0.1
UNITS
Output Frequency Range
f
(Note 3)
= 3.3V, T = +ꢀ2NC
MHz
OUT
V
0
CC
A
Output Center Frequency
Tolerance
Df
Across T and V
CC
5
OUT
A
0NC to +70NC, across V
CC
Power-Up Time
t
(Note 4)
ms
pF
PU
Load Capacitance
C
12
20
20
L
< 33.3MHz (Note 3)
Duty Cycle
5
R 33.3MHz (Note 3)
40
60
Jitter (RMS), 20MHz
0.3
5
Note 1: All ꢁoltages are referenced to ground. Currents entering the IC are specified positiꢁe and currents exiting the IC are negatiꢁe.
Note 2: Supply current measured with C = 12pF, V
Note 3: No dither.
= 3.6V, T = +ꢀ2°C, f
= 66.6MHz, no dither.
L
CC
A
OUT
Note 4: Guaranteed by design.
Note 5: For aging characteristics, contact factory.
Typical Operating Characteristics
(V
= 3.3V, T = +ꢀ2°C, unless otherwise noted.)
A
CC
FREQUENCY VARIATION
vs. VOLTAGE
FREQUENCY VARIATION
vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
0.25
0.20
9.2
9.0
1.75
1.25
V
= 3.3V
V
= 3.6V
CC
CC
CC
NO DITHER
0.15
8.8
8.6
8.4
8.2
8.0
7.8
7.6
7.4
0.75
0.10
0.05
f
= 66MHz
OUT
V
= 3.3V
0.25
f
= 130kHz
OUT
0.00
-0.25
-0.75
-1.25
-1.75
f
= 66MHz
OUT
-0.05
-0.10
-0.15
-0.20
-0.25
f
= 130kHz
OUT
V
= 3.0V
50
CC
NO DITHER
3.4
-40
-10
20
80
110
3.0
3.1
3.2
3.3
(V)
3.5
3.6
-40
-10
20
50
80
110
TEMPERATURE (°C)
V
TEMPERATURE (°C)
CC
Maxim Integrated
3
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Typical Operating Characteristics (continued)
(V
= 3.3V, T = +ꢀ2°C, unless otherwise noted.)
CC
A
DUTY CYCLE vs. SUPPLY VOLTAGE
DUTY CYCLE vs. TEMPERATURE
OUTPUT RISE TIME
52.0
60
58
56
54
52
50
48
46
44
42
40
3.5
51.5
51.0
50.5
50.0
49.5
49.0
48.5
48.0
3.0
2.5
f
= 66MHz
= 130kHz
OUT
RISE TIME
= 1.02ns
TYPICAL
AT 12pF LOAD
f
= 66MHz
OUT
f
OUT
2.0
1.5
1.0
0.5
0.0
f
= 130kHz
OUT
NO DITHER
3.4
NO DITHER
85 110
3.0
3.1
3.2
3.3
(V)
3.5
3.6
-40 -15
10
35
60
V
TEMPERATURE (°C)
TIME (ns)
CC
SPECTRUM ATTENUATION vs. FREQUENCY
AT DIFFERENT DITHER AMPLITUDES
OUTPUT FALL TIME
5
0
3.5
RBW = ±ꢀ0kHz
CENTER DITHER
f
= 33.3MHz
0%
OUT
3.0
2.5
±±%
8dB
FALL TIME
= 1.13ns
TYPICAL
AT 12pF LOAD
-5
±±dB
±ꢀ%
±ꢁ%
±ꢁdB
-10
-15
-20
-25
-30
-35
2.0
1.5
1.0
0.5
0.0
34.9
31.9 32.4
32.9 33.4
33.9
34.4
TIME (ns)
FREQUENCY (MHz)
Maxim Integrated
4
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Pin Configuration
Pin Description
PIN
1
NꢂME
FUNCTION
OUT
Spread-Spectrum Clock Output
TOP VIEW
ꢀ
V
Supply Voltage
Ground
CC
+
3
GND
SEL1
OUT
1
2
3
4
8
7
6
5
DR
V
N.C.
N.C.
SEL0
CC
Spread-Spectrum Dither Magnitude
Select Inputs. Selects dither
magnitude (see Table 1).
DS1091L
4
GND
SEL1
2
SEL0
N.C.
6, 7
No Connection
µMAX
Spread-Spectrum Dither Rate Selector.
Selects dither rate (see Table ꢀ).
8
DR
Block Diagram
V
CC
f
DS1091L
MOSC
FACTORY-PROGRAMMED
MASTER OSCILLATOR
V
CC
f
OUT
f
f
DITHER
MOSC
OUT
TRIANGLE-WAVE GENERATOR
(DITHER %)
GND
DITHER RATE DIVIDER
DR
IS THE MASTER OSCILLATOR FREQUENCY.
SEL1
SEL0
f
MOSC
Maxim Integrated
5
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Power-Up
Detailed Description
Upon the application of power, the DS1091L output is
held in the low state until t has elapsed. This remoꢁes
any possibility of erroneous output transitions during ini-
tial power-up.
The DS1091L clock generator is capable of output fre-
quencies from 130kHz to 66.6MHz oꢁer the full automo-
tiꢁe temperature range (-40°C to +1ꢀ2°C). The deꢁice
can also produce a spread-spectrum (dithered) square-
waꢁe output using four pin-selectable dither percent-
ages. Both center (DS1091LUA) and down (DS1091LUB)
dithering options are aꢁailable. The deꢁice also features
two selectable dither rates.
PU
Table 1. Dither Magnitude
SEL1
LOGIC
LEꢅEL
SEL0
LOGIC
LEꢅEL
DITHER MꢂGNITUDE (ꢁ)
DS1091LUꢂ DS1091LUB
The DS1091L is shipped from the factory programmed to
a customer-specified frequency.
0
0
1
1
0
1
0
1
No dither
Q1
No dither
-ꢀ
-4
-8
Spread Spectrum
The DS1091L can reduce radiated emission peaks. The
dither percentage is controlled by the state of the SEL0
and SEL1 pins. The output frequency can be dithered
at 05, 15, ꢀ5, and 45, centered around the pro-
grammed frequency (for the DS1091LUB this can be
down dithered by 05, -ꢀ5, -45, and -85).
Qꢀ
Q4
Table 2. ꢅalue of n w.r.t. Output Frequencꢃ
OUTPUT FREQUENCY f
(MHz)
OUT
n
The two select pins SEL0 and SEL1 proꢁide a means of
selecting the dither magnitudes as follows:
DR = LOGIC DR = LOGIC
f
(min)
f
(max)
OUT
OUT
LEꢅEL 1
LEꢅEL 0
A triangle-waꢁe generator injects a control signal into the
master oscillator to dither its output. The dither rate is a
0.130
0.ꢀ60
4
2
2
6
0.ꢀ61
0.2ꢀꢀ
1.043
ꢀ.084
4.168
8.334
16.668
33.334
0.2ꢀ1
1.04ꢀ
ꢀ.083
4.167
8.333
16.667
33.333
66.667
function of the output frequency, f , as well as the set-
OUT
6
7
ting of the DR pin (see the equation below). Figure 1A and
Figure 1B show a plot of the output frequency ꢁs. time.
7
8
8
9
f
OUT
DITHER RATE =
9
10
11
1ꢀ
13
n
ꢀ
10
11
1ꢀ
where n is defined in Table ꢀ as a function of output
frequency. For example, for an output frequency of
ꢀ7.0MHz, the dither rate would be 13.ꢀkHz for DR = 1
and 6.6kHz for DR = 0.
DS1091L Frequency Spreading Profile as a Function of Dither %
IF DITHER AMOUNT = 0%
IF DITHER AMOUNT = 0%
PROGRAMMED f
(1%, 2%, OR 4% OF f
+
OUT
PROGRAMMED f
OUT
)
OUT
DITHER
DITHER
PROGRAMMED f
PROGRAMMED f
(1%, 2%, OR 4% OF f
AMOUNT
( 1%, 2%,
OR 4%)
AMOUNT
(-2%, -4%,
OR -8%)
OUT
-
)
PROGRAMMED f
(2%, 4%, OR 8% OF f
-
)
OUT
OUT
OUT
OUT
1
1
DITHER FREQ
DITHER FREQ
TIME
TIME
Figure 1A. Center Dithered
Figure 1B. Down Dithered
Maxim Integrated
6
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Applications Information
Chip Information
SUBSTRATE CONNECTED TO GROUND
Power-Supply Decoupling
To achieꢁe best results, it is highly recommended that
decoupling capacitors are used on the IC power-supply
pins. Typical ꢁalues of decoupling capacitors are 0.01µF
and 0.1µF. Use a high-quality, ceramic, surface-mount
Package Information
For the latest package outline information and land patterns (foot-
prints), go to www.maximintegrated.com/packageꢄ. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but the
drawing pertains to the package regardless of RoHS status.
capacitor, and mount it as close as possible to the V
and GND pins of the IC to minimize lead inductance.
CC
PꢂCKꢂGE
TYPE
PꢂCKꢂGE
CODE
OUTLINE
NO.
LꢂND
PꢂTTERN NO.
8 µMAX
U8+1
21-0036
90-0092
Maxim Integrated
7
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Ordering Information
PꢂRT
TEMP RꢂNGE
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
-40NC to +1ꢀ2NC
SPREꢂD SPECTRUM
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Center
Down
OUTPUT FREQUENCY (MHz) PIN-PꢂCKꢂGE
DS1091LUA-0ꢀ7+
DS1091LUA-0ꢀ7+T
DS1091LUA-033/V+
DS1091LUA-033/V+T
DS1091LUA-033+
DS1091LUA-033+T
DS1091LUA-040/V+
DS1091LUA-040/V+T
DS1091LUA-040+
DS1091LUA-040+T
DS1091LUA-066/V+
DS1091LUA-066/V+T
DS1091LUA-066+
DS1091LUA-066+T
DS1091LUA-10A/V+
DS1091LUA-10A/V+T
DS1091LUA-ꢀ00/V+
DS1091LUA-ꢀ00/V+T
DS1091LUA-ꢀ00+
DS1091LUA-ꢀ00+T
DS1091LUA-330/V+
DS1091LUA-330/V+T
DS1091LUA-330+
DS1091LUA-330+T
DS1091LUA-xxx+
DS1091LUB-008+T
DS1091LUB-0ꢀ7+
DS1091LUB-0ꢀ7+T
DS1091LUB-033+
DS1091LUB-033+T
DS1091LUB-066+
DS1091LUB-066+T
DS1091LUB-xxx+
ꢀ7.0
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
8 FMAX
ꢀ7.0
33.3
33.3
33.3
33.3
40.0
40.0
40.0
40.0
66.6
66.6
66.6
66.6
10.38
10.38
0.ꢀ0
0.ꢀ0
0.ꢀ0
0.ꢀ0
33.0
33.0
33.0
33.0
Custom (contact factory)
8.0
Down
ꢀ7.0
Down
ꢀ7.0
Down
33.3
Down
33.3
Down
66.6
66.6
Down
Down
Custom (contact factory)
V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
xxx Denotes factory-programmed custom frequencies. Email custom.oscillators@maximintegrated.com for more information.
Maxim Integrated
8
DS1091L
Automotive Temperature Range
Spread-Spectrum EconOscillator™
Revision History
REꢅISION REꢅISION
PꢂGES
DESCRIPTION
CHꢂNGED
NUMBER
DꢂTE
0
9/06
Initial release
—
Added the continuous power dissipation numbers, lead temperature, and soldering tem-
perature to the Absolute Maximum Ratings section; updated the custom frequency tech-
nical support information; updated the Ordering Information table; added the land pattern
no. to the Package Information table
1
ꢀ
3/11
9/11
1, ꢀ, 7
7
Updated the Ordering Information table
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent
licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and
max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
9
©
ꢀ01ꢀ Maxim Integrated Products, Inc.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
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