DS1088EN-133+

DS1088E Fixed-Frequency EconOscillator™ General Description Benefits and Features The DS1088E is a low-cost clock generator that produces 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. ● Factory-Programmed, 133MHz Square-Wave Generator ● Single Output ● No External Timing Components Required ● 2.85V to 3.6V Supply ● Power-Down Mode Applications ● ● ● ● ● ● ● ● Wide Temperature Range (-40°C to +95°C) Optical Modules Printers Copiers Automotive Telematics Computer Peripherals POS Terminals Cable Modems EconOscillator is a trademark of Maxim Integrated Products, Inc. Ordering Information appears at end of data sheet. For related parts and recommended products to use with this part, refer to www.maximintegrated.com/DS1088E.related. Typical Operating Circuit 133MHz OUTPUT OUT DNC DS1088E VCC VCC DNC VCC PDN GND GND DECOUPLING CAPACITORS (0.1µF AND 0.01µF) 19-6853; Rev 0; 11/13 VCC DS1088E 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............................ -40°C to +95°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 = -40NC to +95NC, 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 2.85 0.7 x VCC -0.3 MAX UNITS 3.63 V VCC + 0.3 V 0.3 x VCC V DC Electrical Characteristics (VCC = 2.85V to 3.63V, TA = -40NC to +95NC, unless otherwise noted.) PARAMETER SYMBOL CONDITIONS High-Level Output Voltage (OUT) VOH IOH = -4mA, VCC = MIN Low-Level Output Voltage (OUT) VOL IOL = 4mA High-Level Input Current (PDN) IIH VCC = 3.63V Low-Level Input Current (PDN) IIL VIL = 0V Supply Current (Active) ICC VCC = 3.63V, CL = 15pF, fO = 133MHz Standby Current (Power-Down) ICCQ MIN TYP MAX VCC 0.4 UNITS V 0.4 V 1 μA 24 mA 10 μA MAX UNITS -1 μA 15 Power-down mode Oscillator Characteristics (VCC = 2.85V to 3.63V, TA = -40NC to +95NC, unless otherwise noted.) PARAMETER Output Frequency Range Available Output Frequency Tolerance www.maximintegrated.com SYMBOL CONDITIONS MIN 133.3 fO Δf/fO TYP -15 MHz +5 % Maxim Integrated │  2 DS1088E Fixed-Frequency EconOscillator™ AC Electrical Characteristics (VCC = 2.85V to 3.63V, TA = -40NC to +95NC, unless otherwise noted.) PARAMETER Power-Up Time OUT Disabled After Entering Power-Down Mode Load Capacitance Output Duty Cycle (OUT) SYMBOL MAX UNITS (Note 2) 100 μs tPDN (Note 3) 7 μs CL (Note 4) 50 pF tPOR + tSTAB CONDITIONS MIN TYP 15 55 % Note 1: All voltages are referenced to ground. Note 2: 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 3: Output disabled in two cycles or less of the output frequency. Note 4: Output voltage swings may be impaired at high frequencies combined with high-output loading. www.maximintegrated.com Maxim Integrated │  3 DS1088E Fixed-Frequency EconOscillator™ Typical Operating Characteristics (VCC = 3.3V, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. TEMPERATURE 12.8 14 toc01 VCC = 3.3V 12.6 13.5 12 11.8 11.6 11.4 12.5 12 11.5 TA = +25oC 11 10.5 11.2 10 -40 -25 -10 5 20 35 50 65 80 95 2.85 3 55 toc04 SHUTDOWN SUPPLY CURRENT (µA) DUTY CYCLE (%) 53 52 51 50 49 2.85 3 3.15 3.3 3.45 3.6 3.45 3.6 3 3.15 3.3 3.45 DUTY CYCLE vs. TEMPERATURE 50.6 2.2 50.4 2.18 50.2 2.16 2.14 2.12 2.1 VCC = 3.3V 2.08 50 49.6 49.4 49 48.8 -10 5 20 35 50 65 80 VCC = 3.3V 49.2 2.04 -25 toc06 49.8 2.06 SUPPLY VOLTAGE (V) 95 TEMPERATURE (oC) 3.6 50.8 2.22 -40 2.85 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE toc05 toc03 TA = +25oC SUPPLY VOLTAGE (V) 2.24 TA = +25oC 54 3.3 DUTY CYCLE (%) DUTY CYCLE vs. SUPPLY VOLTAGE 3.15 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 FREQUENCY ERROR vs. SUPPLY VOLTAGE SUPPLY VOLTAGE (V) TEMPERATURE (oC) 48 FREQUENCY ERROR (%) 13 12.2 SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) 12.4 11 toc02 -40 -25 -10 5 20 35 50 65 80 95 TEMPERATURE (oC) FREQUENCY ERROR vs. TEMPERATURE toc07 2.5 FREQUENCY ERROR (%) 2 1.5 1 0.5 VCC = 3.3V 0 -0.5 -40 -25 -10 5 20 35 50 65 80 95 TEMPERATURE (oC) www.maximintegrated.com Maxim Integrated │  4 DS1088E Fixed-Frequency EconOscillator™ Pin Configuration TOP VIEW DNC DNC PDN GND 8 7 6 5 DS1088E EP + 1 2 OUT VCC 3 4 VCC GND TDFN 2mm x 3mm 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, 8 DNC Do Not Connect. The DNC pins are internally connected to ground. EP — www.maximintegrated.com Exposed Pad. Internally connected to GND. Connect to the ground plane to minimize noise injection. Not intended for use as the device electrical ground. Maxim Integrated │  5 DS1088E Fixed-Frequency EconOscillator™ Detailed Description Output Frequency The DS1088E is a low-cost clock generator that produces 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. A block diagram of the device is shown in Figure 1. VCC VCC EEPROM CONTROL VOLTAGECONTROLLED OSCILLATOR 80MHz TO 160MHz PRESCALER ÷ BY 1, 2, 4...256 GND DS1088E www.maximintegrated.com 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 PDN Figure 1. Block Diagram The internal oscillator frequency is divided by the factoryprogrammed prescaler to produce an output frequency of 133MHz. OUT 133MHz Power-Supply Decoupling To achieve the best results when using the device, the power supply must be decoupled with 0.01µF and 0.1µF high-quality, ceramic, surface-mount capacitors. Surfacemount components minimize lead inductance, which improves performance, and tend to have adequate highfrequency response for decoupling applications. These capacitors should be placed as close as possible to the VCC and GND pins. Maxim Integrated │  6 DS1088E Fixed-Frequency EconOscillator™ Ordering Information PART DS1088EN-133+T FREQUENCY (MHz) TEMP RANGE PIN-PACKAGE 133.3 -40°C to +95°C 8 TDFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad. 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. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 8 TDFN-EP T823+1 21-0174 90-0091 Chip Information SUBSTRATE CONNECTED TO GROUND www.maximintegrated.com Maxim Integrated │  7 DS1088E Fixed-Frequency EconOscillator™ Revision History REVISION NUMBER REVISION DATE 0 11/13 DESCRIPTION Initial release PAGES CHANGED — 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. 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 and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. ©  2013 Maxim Integrated Products, Inc. │  8