19-6184; Rev 2; 1/12 DS1088L Fixed-Frequency EconOscillator™ General Description The DS1088L is a low-cost clock generator that produces 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. Applications Features SFactory-Programmed Square-Wave Generator from 321kHz to 133MHz SSingle Output SNo External Timing Components Required S2.7V to 3.6V Supply SPower-Down Mode Printers S1% Frequency Tolerance Over Temperature and Voltage Copiers SWide Temperature Range (-20°C to +85°C) Automotive Telematics Computer Peripherals Typical Operating Circuit POS Terminals Cable Modems 312kHz TO 133MHz OUTPUT OUT Ordering Information appears at end of data sheet. VCC VCC DNC DS1088L DNC VCC PDN GND GND VCC 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.maxim-ic.com/DS1088L.related ����������������������������������������������������������������� Maxim Integrated Products 1 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. DS1088L 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 Storage Temperature Range............................. -55°C to +125°C Lead Temperature (soldering, 10s).................................+300°C Soldering Temperature (reflow).......................................+260°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. RECOMMENDED OPERATING CONDITIONS (TA = -20NC to +85NC, unless otherwise noted.) PARAMETER SYMBOL Supply Voltage VCC High-Level Input Voltage (PDN) VIH Low-Level Input Voltage (PDN) VIL CONDITIONS (Note 1) MIN TYP 2.7 0.7 x VCC -0.3 MAX UNITS 3.6 V VCC + 0.3 V 0.3 x VCC V DC ELECTRICAL CHARACTERISTICS (VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX VCC 0.4 UNITS High-Level Output Voltage (OUT) VOH IOH = -4mA, VCC = MIN 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 ICC VCC = 3.6V, CL = 15pF, fO = 133MHz Supply Current (Active) Standby Current (Power-Down) ICCQ Power-down mode V -1 FA 15 24 mA 10 FA ����������������������������������������������������������������� Maxim Integrated Products 2 DS1088L Fixed-Frequency EconOscillator™ OSCILLATOR CHARACTERISTICS (VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.) PARAMETER Output Frequency Range Available SYMBOL CONDITIONS fO MIN TYP MAX UNITS 0.3124 133.3 MHz Output Frequency Tolerance ∆fO fO VCC = 3.3V, TA = +25NC (Note 2) -0.3 +0.3 % Voltage Frequency Variation ∆fV fO Over voltage range, TA = +25NC (Note 3) -0.35 +0.35 % Temperature Frequency Variation ∆fT fO Over temperature range, VCC = 3.3V (Notes 4, 5) -20NC to +25NC -0.7 +0.7 +25NC to +85NC -0.5 +0.5 -1.0 +1.0 % MAX UNITS Frequency Variation Over Voltage and Temperature ∆fV,T fO Over voltage and temperature range % AC ELECTRICAL CHARACTERISTICS (VCC = 2.7V to 3.6V, TA = -20NC to +85NC, unless otherwise noted.) PARAMETER Power-Up Time OUT Disabled After Entering Power-Down Mode Load Capacitance Output Duty Cycle (OUT) SYMBOL CONDITIONS MIN TYP tPOR + tSTAB (Note 6) 100 Fs tPDN (Note 7) 7 Fs CL (Note 8) 50 pF 60 % fO < 80MHz, fO ≥ 80MHz fO < 80MHz 15 40 50 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 introduced to allow the oscillator to stabilize. tSTAB is equivalent to approximately 512 clock cycles and will depend on the programmed 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 Products 3 DS1088L Fixed-Frequency EconOscillator™ Typical Operating Characteristics (VCC = 3.3V, TA = +25°C, unless otherwise noted.) ACTIVE SUPPLY CURRENT vs. SUPPLY VOLTAGE 9 8 7 133MHz 6 100MHz 5 4 133MHz 6 55 133MHz 10 9 100MHz 7 3.1 80MHz 6 3.3 3.5 2.9 2.7 3.3 3.1 3.5 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE FREQUENCY ERROR vs. SUPPLY VOLTAGE FREQUENCY ERROR vs. TEMPERATURE 2.1 2.0 1.9 1.8 1.7 0.10 0.05 133MHz 0 -0.05 80MHz -0.10 1.5 5 55 30 2.9 2.7 TEMPERATURE (°C) 3.1 3.3 100MHz -0.2 TA = +25°C CL || RL = 1.8pF || 500Ω -20 55 30 5 SUPPLY VOLTAGE (V) 80 TEMPERATURE (°C) DUTY CYCLE vs. TEMPERATURE 56 DS1088L toc07 56 DS1088L toc06 80MHz -0.1 -0.4 3.5 DUTY CYCLE vs. SUPPLY VOLTAGE 133MHz 55 VCC = 3.3V 133MHz 55 54 54 53 DUTY CYCLE (%) DUTY CYCLE (%) 133MHz 0 -0.3 TA = +25°C CL || RL = 1.8pF || 500Ω -0.20 80 100MHz 0.1 80MHz -0.15 1.6 VCC = 3.3V 0.2 DS1088L toc08 2.2 100MHz FREQUENCY ERROR (%) FREQUENCY ERROR (%) 0.15 0.3 DS1088L toc05 0.20 DS1088L toc04 VPDN = 0V 2.3 -20 11 TEMPERATURE (°C) VCC = 3.3V 2.4 2.9 2.7 80 12 80MHz 3 30 13 8 4 2.5 SHUTDOWN CURRENT (µA) 100MHz 5 CL = 15pF TA = +25°C 14 7 3 5 15 8 80MHz -20 CL = 1.8pF TA = +25°C DS1088L toc02 10 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 9 CL = 1.8pF SUPPLY CURRENT (mA) VCC = 3.3V DS1088L toc01 10 ACTIVE SUPPLY CURRENT vs. SUPPLY VOLTAGE DS1088L toc03 ACTIVE SUPPLY CURRENT vs. TEMPERATURE 100MHz 52 51 TA = +25°C CL || RL = 1.8pF || 500Ω 49 2.7 2.9 52 100MHz 51 50 80MHz 50 53 3.1 3.3 SUPPLY VOLTAGE (V) 80MHz 49 3.5 TA = +25°C CL || RL = 1.8pF || 500Ω 48 -20 5 30 55 80 TEMPERATURE (°C) ����������������������������������������������������������������� Maxim Integrated Products 4 DS1088L Fixed-Frequency EconOscillator™ Pin Configuration TOP VIEW + OUT 1 8 DNC 7 DNC 3 6 PDN GND 4 5 GND VCC 2 VCC DS1088L µSOP Pin Description PIN NAME 1 OUT Oscillator Output FUNCTION 2, 3 VCC Power Supply 4, 5 GND Ground 6 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 DNC Do Not Connect. The DNC pins are internally connected to ground. 8 DNC Do Not Connect ����������������������������������������������������������������� Maxim Integrated Products 5 DS1088L Fixed-Frequency EconOscillator™ Detailed Description The DS1088L is a low-cost clock generator that produces 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. A block diagram is shown in Figure 1. Output Frequency The internal oscillator frequency is divided by the factoryprogrammed prescaler to produce an output frequency of 312kHz to 133MHz. Contact the factory for custom frequencies. Power-Down Mode 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 adequate high-frequency response for decoupling applications. These capacitors should be placed as close as possible to the VCC and GND pins. Chip Information SUBSTRATE CONNECTED TO GROUND 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. VCC VCC EEPROM CONTROL PDN VOLTAGECONTROLLED OSCILLATOR 80MHz TO 160MHz PRESCALER ÷ BY 1, 2, 4...256 OUT (312kHz TO 133MHz) GND DS1088L Figure 1. Block Diagram ����������������������������������������������������������������� Maxim Integrated Products 6 DS1088L Fixed-Frequency EconOscillator™ Ordering Information PART FREQUENCY (MHz) TEMP RANGE PIN-PACKAGE DS1088LU-02+ 2.048 -20NC to +85NC 8 µSOP DS1088LU-10+ 10.0 -20NC to +85NC 8 µSOP DS1088LU-16+ 16.6 -20NC to +85NC 8 µSOP DS1088LU-66+ 66.6 -20NC to +85NC 8 µSOP DS1088LU-100+ 100.0 -20NC to +85NC 8 µSOP DS1088LU-yyy+ (see note) -20NC to +85NC 8 µSOP Note: For more information about custom frequencies, email [email protected]. +Denotes a lead(Pb)-free/RoHS-compliant package. yyy = frequency 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. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 8 µSOP U8+1 21-0036 90-0092 ����������������������������������������������������������������� Maxim Integrated Products 7 DS1088L Fixed-Frequency EconOscillator™ Revision History REVISION NUMBER REVISION DATE 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 DESCRIPTION PAGES CHANGED 1, 2 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. 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