DS1088CN-133+T - Hytronics

DS1088C

Fixed-Frequency EconOscillator™

General Description

The DS1088C is a low-cost clock generator that pro-

duces a square-wave output without external timing

components. The fixed-frequency oscillator is available

in a factory-calibrated frequency of 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, 133MHz Square-Wave

Generator

S Single Output

S No External Timing Components Required

S 2.7V to 3.6V Supply

S Power-Down Mode

S Wide Temperature Range (-20°C to +85°C)

Typical Operating Circuit

19-6186; Rev 0; 3/12

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.maximintegrated.com/DS1088C.related

VCC

OUT

PDN

DNC

GND

VCC

DECOUPLING CAPACITORS

(0.1µF AND 0.01µF)

DNC

GND

133MHz

OUTPUT

DS1088C

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.

DS1088C

Fixed-Frequency EconOscillator™

2Maxim Integrated

(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 (TDFN only; 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.)

OSCILLATOR CHARACTERISTICS—TDFN

(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 1 FA

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

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Frequency Range

Available fO133.3 MHz

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

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

Temperature Frequency Variation

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 Over voltage and temperature range -1.0 +1.0 %

∆

V,T

∆

DS1088C

Fixed-Frequency EconOscillator™

3Maxim Integrated

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—WLP

(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

Power-Up Time tPOR +

tSTAB (Note 6) 100 Fs

OUT Disabled After Entering

Power-Down Mode tPDN (Note 7) 7 Fs

Load Capacitance CL(Note 8) 15 50 pF

Output Duty Cycle (OUT) 40 60 %

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Frequency fO133.3 MHz

Output Frequency Tolerance VCC = 3.3V, TA = +25NC

(Note 2) -3 +3 %

Voltage Frequency Variation Over voltage range, TA = +25NC (Note 3) -3.5 +3.5 %

Temperature Frequency Variation

Over temperature

range, VCC = +3.3V

(Notes 4, 5)

-20NC to +25NC-7 +7

+25NC to +85NC-5 +5

Frequency Variation Over Voltage

and Temperature Over voltage and temperature range -10 +10 %

∆

DS1088C

Fixed-Frequency EconOscillator™

4Maxim Integrated

Typical Operating Characteristics

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

ACTIVE SUPPLY CURRENT

vs. TEMPERATURE

DS1088C toc01

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

55305

-20 80

VCC = 3.3V CL = 1.8pF

ACTIVE SUPPLY CURRENT

vs. SUPPLY VOLTAGE

DS1088C toc02

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

3.33.12.9

2.7 3.5

TA = +25°C CL = 1.8pF

ACTIVE SUPPLY CURRENT

vs. SUPPLY VOLTAGE

DS1088C toc03

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

2.9 3.1 3.3 3.5

2.7

TA = +25°C CL = 15pF

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

DS1088C toc04

TEMPERATURE (°C)

SHUTDOWN CURRENT (µA)

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

DS1088C toc05

SUPPLY VOLTAGE (V)

FREQUENCY ERROR (%)

2.9 3.1 3.3 3.5

-0.15

-0.10

-0.05

0.05

0.10

0.15

0.20

-0.20

2.7

TA = +25°C

CL || RL = 1.8pF || 500Ω

FREQUENCY ERROR

vs. TEMPERATURE

DS1088E toc06

TEMPERATURE (°C)

FREQUENCY ERROR (%)

-0.3

-0.2

-0.1

0.1

0.2

0.3

-0.4

-20

VCC = 3.3V

TA = +25°C

CL || RL = 1.8pF || 500Ω

DUTY CYCLE

vs. SUPPLY VOLTAGE

DS1088C toc07

SUPPLY VOLTAGE (V)

DUTY CYCLE (%)

3.1

2.9 3.3

2.7 3.5

TA = +25°C

CL || RL = 1.8pF || 500Ω

DUTY CYCLE

vs. TEMPERATURE

DS1088C toc08

TEMPERATURE (°C)

DUTY CYCLE (%)

8055

530

-20

VCC = 3.3V

TA = +25°C

CL || RL = 1.8pF || 500Ω

DS1088C

Fixed-Frequency EconOscillator™

5Maxim Integrated

Pin/Bump Descriptions

Pin/Bump Configurations

PIN/BUMP NAME FUNCTION

TDFN-EP WLP

1 A1 OUT Oscillator Output

2, 3 B1 VCC Power Supply

4, 5 A2 GND Ground

6 B2 PDN 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, 8 — DNC Do Not Connect. The DNC pins are internally connected to ground.

— — EP

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

ground.

134

865

DNC PDN GND

DNC

OUT VCC GNDVCC

TDFN

(3mm x 3mm)

TOP VIEW

OUT GND

VCC PDN

TOP VIEW

WLP

DS1088C

Fixed-Frequency EconOscillator™

6Maxim Integrated

Detailed Description

The DS1088C 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 a

factory-calibrated frequency of 133MHz. The DS1088C

has a power-down pin for power-sensitive applications.

A block diagram of the DS1088C is shown in Figure 1.

Output Frequency

The internal oscillator frequency is divided by the factory-

programmed prescaler to produce an output frequency

of 133MHz.

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 DS1088C,

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

133MHz

EEPROM

CONTROL

VOLTAGE-

CONTROLLED

OSCILLATOR

80MHz TO 160MHz

PRESCALER

÷ BY 1, 2, 4...256

GND

VCC

DS1088C

Fixed-Frequency EconOscillator™

7Maxim Integrated

Package Information

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.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

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

T = Tape and reel.

*EP = Exposed pad.

PART FREQUENCY (MHz) TEMP RANGE PIN-PACKAGE

DS1088CN-133+T 133.3 -20NC to +85NC 8 TDFN-EP*

DS1088CX-133+T 133.3 -20NC to +85NC 4 WLP

PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.

8 TDFN-EP T833+2 21-0137 90-0059

4 WLP W41D1+1 21-0455 Refer to Application Note 1891

DS1088C

Fixed-Frequency EconOscillator™

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 8

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 3/12 Initial release —