DS1088LU-737+T - Maxim - Datasheet.Directory

DS1088L

Fixed-Frequency EconOscillator™

�� Maxim Integrated Products 1

General Description

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.

Applications

Printers

Copiers

Automotive Telematics

Computer Peripherals

POS Terminals

Cable Modems

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)

Typical Operating Circuit

19-6184; Rev 2; 1/12

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.maxim-ic.com/DS1088L.related

VCC

OUT

PDN

DNC

GND

VCC

DECOUPLING CAPACITORS

(0.1µF AND 0.01µF)

DNC

GND

312kHz TO 133MHz

OUTPUT

DS1088L

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

�� Maxim Integrated Products 2

DS1088L

Fixed-Frequency EconOscillator™

(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

Storage Temperature Range ............................ -55°C to +125°C

Lead Temperature (soldering, 10s) ................................+300°C

Soldering Temperature (reflow) ......................................+260°C

ABSOLUTE MAXIMUM RATINGS

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 OPERATING CONDITIONS

(TA = -20NC to +85NC, unless otherwise noted.)

DC ELECTRICAL CHARACTERISTICS

(VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.)

*Not to exceed +6.0V.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage VCC (Note 1) 2.7 3.6 V

High-Level Input Voltage (PDN)VIH 0.7 x VCC VCC + 0.3 V

Low-Level Input Voltage (PDN)VIL -0.3 0.3 x VCC V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

High-Level Output Voltage (OUT) VOH IOH = -4mA, VCC = MIN VCC -

0.4 V

Low-Level Output Voltage (OUT) VOL IOL = 4mA 0.4 V

High-Level Input Current (PDN)IIH VCC = 3.6V 1FA

Low-Level Input Current (PDN)IIL VIL = 0V -1 FA

Supply Current (Active) ICC VCC = 3.6V, CL = 15pF, fO = 133MHz 15 24 mA

Standby Current (Power-Down) ICCQ Power-down mode 10 FA

�� Maxim Integrated Products 3

DS1088L

Fixed-Frequency EconOscillator™

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) VCC 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 TA = +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 VCC = 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. tSTAB 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.

OSCILLATOR CHARACTERISTICS

(VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS

(VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Frequency Range

Available fO0.3124 133.3 MHz

Output Frequency Tolerance O

O

f

∆

VCC = 3.3V, TA = +25NC (Note 2) -0.3 +0.3 %

Voltage Frequency Variation V

O

f

∆Over voltage range, TA = +25NC (Note 3) -0.35 +0.35 %

Temperature Frequency Variation T

O

f

∆Over temperature

range, VCC = 3.3V

(Notes 4, 5)

-20NC to +25NC-0.7 +0.7

%

+25NC to +85NC-0.5 +0.5

Frequency Variation Over

Voltage and Temperature

V,T

O

f

∆

Over voltage and temperature range -1.0 +1.0 %

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Power-Up Time tPOR +

tSTAB (Note 6) 100 Fs

OUT Disabled After Entering

Power-Down Mode tPDN (Note 7) 7Fs

Load Capacitance CL(Note 8) 15 50 pF

Output Duty Cycle (OUT) fO < 80MHz, fO ≥ 80MHz 40 60 %

fO < 80MHz 50

�� Maxim Integrated Products 4

DS1088L

Fixed-Frequency EconOscillator™

Typical Operating Characteristics

(VCC = 3.3V, TA = +25°C, unless otherwise noted.)

ACTIVE SUPPLY CURRENT

vs. TEMPERATURE

DS1088L toc01

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

55305

4

5

6

7

8

9

10

3

-20 80

VCC = 3.3V CL = 1.8pF

133MHz

100MHz

80MHz

ACTIVE SUPPLY CURRENT

vs. SUPPLY VOLTAGE

DS1088L toc02

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

3.33.12.9

4

5

6

7

8

9

10

3

2.7 3.5

TA = +25°C CL = 1.8pF

133MHz

100MHz

80MHz

ACTIVE SUPPLY CURRENT

vs. SUPPLY VOLTAGE

DS1088L toc03

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

2.9 3.1 3.3 3.5

7

8

9

10

11

12

13

14

15

6

2.7

TA = +25°C CL = 15pF

133MHz

100MHz

80MHz

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

DS1088L toc04

TEMPERATURE (°C)

SHUTDOWN CURRENT (µA)

80

55

305

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.3

2.4

2.5

1.5

-20

VPDN = 0V

VCC = 3.3V

FREQUENCY ERROR

vs. SUPPLY VOLTAGE

DS1088L toc05

SUPPLY VOLTAGE (V)

FREQUENCY ERROR (%)

2.9 3.1 3.3 3.5

-0.15

-0.10

-0.05

0

0.05

0.10

0.15

0.20

-0.20

2.7

TA = +25°C

CL || RL = 1.8pF || 500Ω

133MHz

100MHz

80MHz

FREQUENCY ERROR

vs. TEMPERATURE

DS1088L toc06

TEMPERATURE (°C)

FREQUENCY ERROR (%)

80

55

30

5

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

-0.4

-20

VCC = 3.3V

100MHz

133MHz

100MHz

80MHz

TA = +25°C

CL || RL = 1.8pF || 500Ω

DUTY CYCLE

vs. SUPPLY VOLTAGE

DS1088L toc07

SUPPLY VOLTAGE (V)

DUTY CYCLE (%)

3.1

2.9 3.3

50

51

52

53

54

55

56

49

2.7 3.5

133MHz

100MHz

80MHz

TA = +25°C

CL || RL = 1.8pF || 500Ω

DUTY CYCLE

vs. TEMPERATURE

DS1088L toc08

TEMPERATURE (°C)

DUTY CYCLE (%)

8055

530

49

50

51

52

54

53

55

56

48

-20

133MHz

100MHz

80MHz

VCC = 3.3V

TA = +25°C

CL || RL = 1.8pF || 500Ω

�� Maxim Integrated Products 5

DS1088L

Fixed-Frequency EconOscillator™

Pin Description

Pin Configuration

PIN NAME FUNCTION

1 OUT Oscillator Output

2, 3 VCC Power Supply

4, 5 GND Ground

6PDN 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).

7 DNC Do Not Connect. The DNC pins are internally connected to ground.

8 DNC Do Not Connect

PDN

GNDGND

1

2

8

7

DNC

DNCVCC

VCC

OUT

TOP VIEW

3

4

6

5

DS1088L

+

µSOP

�� Maxim Integrated Products 6

DS1088L

Fixed-Frequency EconOscillator™

Detailed Description

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. A block diagram is shown in Figure 1.

Output Frequency

The internal oscillator frequency is divided by the factory-

programmed prescaler to produce an output frequency

of 312kHz to 133MHz. Contact the factory for custom

frequencies.

Power-Down Mode

The PDN pin disables the internal oscillator and the

oscillator output for power-sensitive applications. The

power-down pin must remain low for at least two output

frequency cycles plus 10µs for deglitching purposes. On

power-up, the output is disabled until power is stable

and the voltage-controlled oscillator has generated 512

clock cycles.

Applications Information

Power-Supply Decoupling

To achieve the best results when using the DS1088L,

the power supply must be decoupled with 0.01µF and

0.1µF high-quality, ceramic, surface-mount capacitors.

Surface-mount components minimize lead inductance,

which improves performance, and tend to have ade-

quate high-frequency response for decoupling applica-

tions. These capacitors should be placed as close as

possible to the VCC and GND pins.

Chip Information

SUBSTRATE CONNECTED TO GROUND

Figure 1. Block Diagram

VCC

PDN

OUT

(312kHz

TO 133MHz)

EEPROM

CONTROL

VOLTAGE-

CONTROLLED

OSCILLATOR

80MHz TO 160MHz

PRESCALER

÷ BY 1, 2, 4...256

GND

VCC

DS1088L

�� Maxim Integrated Products 7

DS1088L

Fixed-Frequency EconOscillator™

Package Information

For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. 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.

Ordering Information

Note: For more information about custom frequencies, email Custom_EconOscillators_Info@maxim-ic.com.

+Denotes a lead(Pb)-free/RoHS-compliant package.

yyy = frequency

PART FREQUENCY (MHz) TEMP RANGE PIN-PACKAGE

DS1088LU-02+ 2.048 -20NC to +85NC8 µSOP

DS1088LU-10+ 10.0 -20NC to +85NC8 µSOP

DS1088LU-16+ 16.6 -20NC to +85NC8 µSOP

DS1088LU-66+ 66.6 -20NC to +85NC8 µSOP

DS1088LU-100+ 100.0 -20NC to +85NC8 µSOP

DS1088LU-yyy+ (see note) -20NC to +85NC8 µSOP

PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

8 µSOP U8+1 21-0036 90-0092

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.

Maxim 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 Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 8

DS1088L

Fixed-Frequency EconOscillator™

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 10/04 Initial release —

1 5/05 Updated the Oscillator Characteristics table and added Note 8 3

2 1/12 Added lead(Pb)-free ordering option to the Ordering Information table; added the lead

and soldering temperature information to the Absolute Maximum Ratings section 1, 2