The DS1088L is a low-cost clock generator that pro-
duces a square-wave output without external timing com-
ponents. The fixed-frequency oscillator is available in
factory-calibrated frequencies from 312kHz to 133MHz.
The device has a power-down pin for power-sensitive
applications.
Features
S
Factory-Programmed Square-Wave Generator
from 321kHz to 133MHz
S
Single Output
S
No External Timing Components Required
S
2.7V to 3.6V Supply
S
Power-Down Mode
S
1% Frequency Tolerance Over Temperature and
Voltage
S
Wide Temperature Range (-20°C to +85°C)
Applications
Printers
Copiers
Automotive Telematics
Computer Peripherals
POS Terminals
Cable Modems
Ordering Information
appears at end of data sheet.
Typical Operating Circuit
312kHz TO 133MHz
OUTPUT
OUT
DS1088L
V
CC
V
CC
V
CC
GND
DNC
DNC
PDN
GND
V
CC
DECOUPLING CAPACITORS
(0.1µF AND 0.01µF)
EconOscillator is a trademark of Maxim Integrated Products, Inc.
For related parts and recommended products to use with this part, refer to:
www.maximintegrated.com/DS1088L.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.
19-6184; Rev 2; 1/12
DS1088L
Fixed-Frequency EconOscillator™
ABSOLUTE MAXIMUM RATINGS
(Voltages relative to ground.)
Voltage Range on V
CC
.........................................-0.5V to +6.0V
Voltage Range on
PDN
........................... -0.5V to (V
CC
+ 0.5V)*
Operating Temperature Range .......................... -20°C to +85°C
*Not
to 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.
Storage Temperature Range............................ -55°C to +125°C
Lead Temperature (soldering, 10s) ................................+300°C
Soldering Temperature (reflow) ......................................+260°C
RECOMMENDED OPERATING CONDITIONS
(T
A
= -20NC to +85NC, unless otherwise noted.)
PARAMETER
Supply Voltage
High-Level Input Voltage (PDN)
Low-Level Input Voltage (PDN)
SYMBOL
V
CC
V
IH
V
IL
(Note 1)
CONDITIONS
MIN
2.7
0.7 x V
CC
-0.3
TYP
MAX
3.6
V
CC
+ 0.3
0.3 x V
CC
UNITS
V
V
V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V to 3.6V, T
A
= -20NC to +85NC, unless otherwise noted.)
PARAMETER
High-Level Output Voltage (OUT)
Low-Level Output Voltage (OUT)
High-Level Input Current (PDN)
Low-Level Input Current (PDN)
Supply Current (Active)
Standby Current (Power-Down)
SYMBOL
V
OH
V
OL
I
IH
I
IL
I
CC
I
CCQ
CONDITIONS
I
OH
= -4mA, V
CC
= MIN
I
OL
= 4mA
V
CC
= 3.6V
V
IL
= 0V
V
CC
= 3.6V, C
L
= 15pF, f
O
= 133MHz
Power-down mode
-1
15
24
10
MIN
V
CC
-
0.4
0.4
1
TYP
MAX
UNITS
V
V
FA
FA
mA
FA
Maxim Integrated
2
DS1088L
Fixed-Frequency EconOscillator™
OSCILLATOR CHARACTERISTICS
(V
CC
= 2.7V to 3.6V, T
A
= -20NC to +85NC, unless otherwise noted.)
PARAMETER
Output Frequency Range
Available
Output Frequency Tolerance
Voltage Frequency Variation
SYMBOL
f
O
∆
f
O
f
O
∆
f
V
f
O
∆
f
T
f
O
∆
f
V,T
f
O
V
CC
= 3.3V, T
A
= +25NC (Note 2)
Over voltage range, T
A
= +25NC (Note 3)
Over temperature
range, V
CC
= 3.3V
(Notes 4, 5)
-20NC to +25NC
+25NC to +85NC
CONDITIONS
MIN
0.3124
-0.3
-0.35
-0.7
-0.5
-1.0
TYP
MAX
133.3
+0.3
+0.35
+0.7
+0.5
+1.0
UNITS
MHz
%
%
Temperature Frequency Variation
Frequency Variation Over
Voltage and Temperature
%
Over voltage and temperature range
%
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 2.7V to 3.6V, T
A
= -20NC to +85NC, unless otherwise noted.)
PARAMETER
Power-Up Time
OUT Disabled After Entering
Power-Down Mode
Load Capacitance
Output Duty Cycle (OUT)
SYMBOL
t
POR
+
t
STAB
t
PDN
C
L
(Note 6)
(Note 7)
(Note 8)
f
O
< 80MHz, f
O
≥ 80MHz
f
O
< 80MHz
40
50
15
CONDITIONS
MIN
TYP
MAX
100
7
50
60
UNITS
Fs
Fs
pF
%
Note 1:
All voltages are referenced to ground.
Note 2:
Typical frequency shift due to aging is within ±0.2%. Aging stressing includes level 1 moisture reflow preconditioning
(24hr +125°C bake, 168hr +85°C/85%RH moisture soak, and three solder reflow passes +240°C +0°C/-5°C peak) followed
by1000hr (max) V
CC
biased +125°C OP/L, 1000hr unbiased +150°C bake, 1000 temperature cycles at -55°C to +125°C,
and 168hr +121°C/2 ATM steam/unbiased autoclave.
Note 3:
This is the change in output frequency due to changes in voltage at T
A
= +25°C.
Note 4:
Guaranteed by design.
Note 5:
This is the change in output frequency due to changes in temperature from the +25°C frequency at V
CC
= 3.3V.
Note 6:
This indicates the time elapsed between power-up and the output becoming active. An on-chip delay is intentionally intro-
duced to allow the oscillator to stabilize. t
STAB
is equivalent to approximately 512 clock cycles and will depend on the pro-
grammed oscillator frequency.
Note 7:
Output disabled in two cycles or less of the output frequency.
Note 8:
Output voltage swings may be impaired at high frequencies combined with high-output loading.
Maxim Integrated
3
DS1088L
Fixed-Frequency EconOscillator™
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE
DS1088L toc01
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS1088L toc02
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
14
SUPPLY CURRENT (mA)
13
12
11
10
9
8
133MHz
T
A
= +25°C
C
L
= 15pF
DS1088L toc03
10
9
SUPPLY CURRENT (mA)
8
7
6
5
4
3
-20
5
30
55
80
TEMPERATURE (°C)
100MHz
133MHz
V
CC
= 3.3V
C
L
= 1.8pF
10
9
SUPPLY CURRENT (mA)
8
7
133MHz
6
5
4
3
2.7
100MHz
T
A
= +25°C
C
L
= 1.8pF
15
100MHz
80MHz
80MHz
2.9
3.1
3.3
3.5
7
6
2.7
2.9
3.1
80MHz
3.3
3.5
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
DS1088L toc04
FREQUENCY ERROR
vs. SUPPLY VOLTAGE
DS1088L toc05
FREQUENCY ERROR
vs. TEMPERATURE
0.2
FREQUENCY ERROR (%)
0.1
0
-0.1
-0.2
-0.3
-0.4
-20
5
100MHz
80MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
30
55
80
133MHz
80MHz
V
CC
= 3.3V
100MHz
DS1088L toc06
2.5
2.4
SHUTDOWN CURRENT (µA)
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
1.5
-20
5
30
55
80
V
CC
= 3.3V
V
PDN
= 0V
0.20
0.15
FREQUENCY ERROR (%)
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
80MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
2.7
2.9
3.1
3.3
3.5
133MHz
100MHz
0.3
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
DUTY CYCLE
vs. SUPPLY VOLTAGE
133MHz
DS1088L toc07
DUTY CYCLE
vs. TEMPERATURE
55
54
DUTY CYCLE (%)
53
52
51
50
80MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
-20
5
30
55
80
TEMPERATURE (°C)
100MHz
133MHz
V
CC
= 3.3V
DS1088L toc08
56
55
DUTY CYCLE (%)
54
53
52
51
80MHz
50
49
2.7
2.9
56
100MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
3.1
3.3
3.5
49
48
SUPPLY VOLTAGE (V)
Maxim Integrated
4
DS1088L
Fixed-Frequency EconOscillator™
Pin Configuration
TOP VIEW
+
OUT 1
V
CC
2
V
CC
3
DS1088L
8
7
6
5
DNC
DNC
PDN
GND
GND 4
µSOP
Pin Description
PIN
1
2, 3
4, 5
6
7
8
NAME
OUT
V
CC
GND
PDN
DNC
DNC
Oscillator Output
Power Supply
Ground
Active-Low Power-Down. When the pin is high, the oscillator is enabled. When the pin is low, the
oscillator is disabled (power-down mode).
Do Not Connect. The DNC pins are internally connected to ground.
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