The DS1088C is a low-cost clock generator that produces
a square-wave output without external timing compo-
nents. The fixed-frequency oscillator is available in a
factory-calibrated frequency of 133MHz. The device has a
power-down pin for power-sensitive applications.
Features
●
Factory-Programmed, 133MHz Square-Wave
Generator
●
Single Output
●
No External Timing Components Required
●
2.7V to 3.6V Supply
●
Power-Down Mode
●
Wide Temperature Range (-20°C to +85°C)
Applications
●
●
●
●
●
Printers
Copiers
Computer Peripherals
POS Terminals
Cable Modems
Typical Operating Circuit
133MHz
OUTPUT
OUT
DNC
DS1088C
Ordering Information
appears at end of data sheet.
V
CC
V
CC
V
CC
GND
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/DS1088C.related.
19-6186; Rev 1; 4/15
DS1088C
Fixed-Frequency EconOscillator™
Absolute Maximum Ratings
(Voltages relative to ground.)
Voltage Range on VCC..........................................-0.5V to +6.0V
Voltage Range on
PDN............................
-0.5V to (VCC + 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 (TDFN only; 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
Oscillator Characteristics—TDFN
(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
Voltage Frequency Variation
Temperature Frequency Variation
Frequency Variation Over Voltage
and Temperature
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
= +25°C (Note 2)
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
-0.3
-0.35
-0.7
-0.5
-1.0
CONDITIONS
MIN
TYP
133.3
+0.3
+0.35
+0.7
+0.5
+1.0
MAX
UNITS
MHz
%
%
%
%
Over voltage and temperature range
www.maximintegrated.com
Maxim Integrated
│
2
DS1088C
Fixed-Frequency EconOscillator™
Oscillator Characteristics—WLP
(V
CC
= 2.7V to 3.6V, T
A
= -20°C to +85°C, unless otherwise noted.)
PARAMETER
Output Frequency
Output Frequency Tolerance
Voltage Frequency Variation
Temperature Frequency Variation
Frequency Variation Over Voltage
and Temperature
SYMBOL
f
O
∆
f
O
f
O
∆
f
V
f
O
∆
f
T
f
O
∆
f
T
f
O
V
CC
= 3.3V, T
A
= +25°C
(Note 2)
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
-3
-3.5
-7
-5
-10
CONDITIONS
MIN
TYP
133.3
+3
+3.5
+7
+5
+10
MAX
UNITS
MHz
%
%
%
%
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)
40
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
DS1088C
Fixed-Frequency EconOscillator™
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE
DS1088C toc01
DS1088C 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
5
30
55
80
3
2.7
2.9
3.1
3.3
3.5
6
2.7
2.9
3.1
3.3
3.5
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
DS1088C toc04
FREQUENCY ERROR
vs. SUPPLY VOLTAGE
DS1088C toc05
FREQUENCY ERROR
vs. TEMPERATURE
0.2
FREQUENCY ERROR (%)
0.1
0
-0.1
-0.2
-0.3
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
-20
5
30
55
80
TEMPERATURE (°C)
V
CC
= 3.3V
DS1088E 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
V
CC
= 3.3V
V
PDN
= 0V
0.20
0.15
FREQUENCY ERROR (%)
0.10
0.05
0
-0.05
-0.10
-0.15
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500Ω
2.7
2.9
3.1
3.3
3.5
SUPPLY VOLTAGE (V)
0.3
55
80
-0.20
-0.4
TEMPERATURE (°C)
DUTY CYCLE
vs. SUPPLY VOLTAGE
DS1088C toc07
DUTY CYCLE
vs. TEMPERATURE
55
54
DUTY CYCLE (%)
53
52
51
50
V
CC
= 3.3V
DS1088C toc08
56
55
DUTY CYCLE (%)
54
53
52
51
50
49
2.7
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
3.1
3.3
2.9
SUPPLY VOLTAGE (V)
3.5
56
49
48
-20
T
A
= +25°C
C
L
||
R
L
= 1.8pF
||
500
Ω
5
30
55
80
TEMPERATURE (°C)
www.maximintegrated.com
Maxim Integrated
│
4
DS1088C toc03
10
10
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
15
ACTIVE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS1088C
Fixed-Frequency EconOscillator™
Pin/Bump Configurations
TOP VIEW
DNC
8
DNC
7
PDN
6
GND
5
TOP VIEW
+
A
DS1088C
1
2
OUT
GND
DS1088C
B
V
CC
PDN
EP
1
OUT
2
V
CC
3
V
CC
4
GND
+
WLP
TDFN
(3mm x 3mm)
Pin/Bump Descriptions
PIN/BUMP
TDFN-EP
1
2, 3
4, 5
6
7, 8
—
WLP
A1
B1
A2
B2
—
—
NAME
OUT
V
CC
GND
PDN
DNC
EP
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.
Exposed Pad (TDFN Only). Internally connected to GND. Connect to the ground
plane to minimize noise injection. Not intended for use as the device electrical
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