The DS1088L is a low-cost clock generator that pro-
duces a square-wave output without external timing
components. 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
● Factory-Programmed Square-Wave Generator from
321kHz to 133MHz
● Single Output
● No External Timing Components Required
● 2.7V to 3.6V Supply
● Power-Down Mode
● 1% Frequency Tolerance Over Temperature and
Voltage
● Wide Temperature Range (-20°C to +85°C)
Applications
●
●
●
●
●
Printers
Copiers
Computer Peripherals
POS Terminals
Cable Modems
Typical Operating Circuit
312kHz TO 133MHz
OUTPUT
OUT
DS1088L
V
CC
V
CC
V
CC
GND
DECOUPLING CAPACITORS
(0.1µF AND 0.01µF)
DNC
PDN
GND
V
CC
DNC
Ordering Information
appears at end of data sheet.
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.
19-6184; Rev 3; 4/15
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 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.
Storage Temperature Range ............................ -55°C to +125°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°C
Recommended Operating Conditions
(T
A
= -20°C to +85°C, 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
= -20°C to +85°C, 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
µA
µA
mA
µA
www.maximintegrated.com
Maxim Integrated │ 2
DS1088L
Fixed-Frequency EconOscillator™
Oscillator Characteristics
(V
CC
= 2.7V to 3.6V, T
A
= -20°C to +85°C, unless otherwise noted.)
PARAMETER
Output Frequency Range
Available
Output Frequency Tolerance
SYMBOL
f
O
CONDITIONS
MIN
0.3124
V
CC
= 3.3V, T
A
= +25°C (Note 2)
-0.3
TYP
MAX
133.3
+0.3
UNITS
MHz
%
∆
f
O
f
O
∆
f
V
f
O
∆
f
T
f
O
∆
f
V,T
f
O
Voltage Frequency Variation
Over voltage range, T
A
= +25°C (Note 3)
Over temperature
range, V
CC
= 3.3V
(Notes 4, 5)
-20°C to +25°C
+25°C to +85°C
-0.35
-0.7
-0.5
-1.0
+0.35
+0.7
+0.5
+1.0
%
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
= -20°C to +85°C, 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
µs
µs
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.
www.maximintegrated.com
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
DS1088L toc02
9
SUPPLY CURRENT (mA)
8
7
6
5
4
3
-20
V
CC
= 3.3V
C
L
= 1.8pF
9
SUPPLY CURRENT (mA)
8
7
6
5
4
T
A
= +25°C
C
L
= 1.8pF
14
SUPPLY CURRENT (mA)
13
12
11
10
9
8
7
T
A
= +25°C
C
L
= 15pF
133MHz
100MHz
133MHz
100MHz
133MHz
100MHz
80MHz
2.7
2.9
3.1
3.3
3.5
SUPPLY VOLTAGE (V)
80MHz
5
30
55
80
80MHz
2.7
2.9
3.1
3.3
3.5
3
6
TEMPERATURE (°C)
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
100MHz
80MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
-20
5
30
55
80
TEMPERATURE (°C)
133MHz
80MHz
V
CC
= 3.3V
100MHz
DS1088L toc06
DS1088L toc08
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
SUPPLY VOLTAGE (V)
133MHz
100MHz
0.3
-0.4
TEMPERATURE (°C)
DUTY CYCLE
vs. SUPPLY VOLTAGE
133MHz
DS1088L toc07
DUTY CYCLE
vs. TEMPERATURE
56
55
54
DUTY CYCLE (%)
53
52
51
50
80MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500W
-20
5
30
55
80
TEMPERATURE (°C)
100MHz
133MHz
V
CC
= 3.3V
56
55
DUTY CYCLE (%)
54
53
52
51
50
49
2.7
80MHz
100MHz
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
3.1
3.3
2.9
SUPPLY VOLTAGE (V)
3.5
49
48
www.maximintegrated.com
Maxim Integrated │ 4
DS1088L toc03
10
10
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
15
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS1088L
Fixed-Frequency EconOscillator™
Pin Configuration
TOP VIEW
+
DS1088L
OUT 1
V
CC
2
V
CC
3
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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