DS1099 Low-Frequency Dual EconOscillator General Description Features The DS1099 is a low-cost, low-power, low-frequency silicon oscillator that generates two square-wave outputs with frequencies between 0.25Hz and 1.048MHz. Individual output enables allow both outputs to be enabled/disabled independently. Both outputs are capable of sinking 16mA, allowing them to directly interface to light-emitting diodes (LEDs) as well as other external circuitry. The DS1099 operates over a wide supply voltage, making it suitable for both 3V and 5V systems. The device is shipped from the factory custom programmed and calibrated, ready to be inserted into the end application. Contact the factory for custom frequencies or requirements. Low-Cost, Low-Frequency EconOscillatorTM with Dual Outputs Factory Programmed Output Frequencies Independently Programmable from 0.25Hz to 1.048MHz 2.7V to 5.5V Single-Supply Operation No External Timing Components Required Independent Output Enables CMOS/TTL-Compatible Outputs Oscillator Outputs Capable of Sinking 16mA to Directly Drive LEDs Relieves Microprocessor of Periodic Interrupt Low-Power Consumption Operating Temperature Range: -40C to +125C 100ppm/C Temp Drift (max) Applications Ordering Information Flashing LED Status Indicators Consumer Appliances Servers Printers Switch-Mode Power Supplies PART TEMP RANGE PIN-PACKAGE DS1099U- a O a 1 -40C to +125C 8 SOP *Where 0 and 1 specify the factory-programmed divider settings for OUT0 and OUT1, respectively. Ordering information is continued on the last page. EconOscillator is a trademark of Maxim Integrated Products, Inc. Typical Operating Circuit Pin Configuration VCC VCC VCC OE0 OE1 N.C. N.C. DS1099 OUT0 OUT1 GND TOP VIEW OUT1 1 8 N.C. OUT0 2 7 N.C. VCC 3 6 OE1 5 OEO DS1099 GND 4 OE1 CAN INSTEAD BE TIED TO VCC IF OUT1 IS NOT USED. 19-7629; Rev 2; 5/15 OUTPUTS CAPABLE OF SINKING 16mA SOP DS1099 Low-Frequency Dual EconOscillator Absolute Maximum Ratings Voltage Range on VCC Relative to Ground..........-0.5V to +6.0V Voltage Range on OE0 and OE1 Relative to Ground................................... -0.5V to (VCC + 0.5V), not to exceed 6.0V Operating Temperature Range.......................... -40C to +125C Storage Temperature Range............................. -55C to +125C Soldering Temperature.......................................See IPC/JEDEC J-STD-020A Specification 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 DC Operating Conditions (TA = -40C to +125C) PARAMETER SYMBOL Supply Voltage VCC Input Logic 1 (OE0, OE1) VIH Input Logic 0 (OE0, OE1) VIL CONDITIONS (Note 1) MIN MAX UNITS 2.7 TYP 5.5 V 0.7 x VCC + VCC 0.3 +0.3 x -0.3 VCC V V DC Electrical Characteristics (VCC = +2.7V to +5.5V, TA = -40C to +125C, unless otherwise noted.) PARAMETER Standby Supply Current Active Supply Current (Note 2) High-Level Output Voltage (OUT0, OUT1) Low-Level Output Voltage (OUT0, OUT1) High-Level Input Current (OE0, OE1) Low-Level Input Current (OE0, OE1) www.maximintegrated.com SYMBOL ISTBY ICC VOH VOL CONDITIONS OE0 = OE1 = VCC MIN TYP 145 CL = 15pF per output, 1.048MHz (both) 323 OE0 = OE1 = GND, 4kHz (both) 146 VCC = 3.3V 1Hz (both) 145 IOH = -1mA, VCC = MIN IOL = 12mA (-40C to +125C) VIH = VCC IIL VIL = 0.0V -1.0 UNITS A A 2.4 IOL = 16mA (-40C to +85C) IIH MAX 275 V 0.4 V +1.0 A A Maxim Integrated 2 DS1099 Low-Frequency Dual EconOscillator AC Electrical Characteristics (VCC = +2.7V to +5.5V, TA = -40C to +125C, unless otherwise noted.) PARAMETER SYMBOL Master Oscillator Frequency fMOSC Nominal Output Frequency fOUT0, fOUT1 Output Frequency Tolerance Voltage Frequency Variation Output Duty Cycle MAX UNITS fOUT tR, tF MHz 1,048,000 Hz TA = +25C, VCC = 4.1V -1.0 2.7V to 5.5V, TA = +25C (Notes 3, 4) -2.0 +2.5 % -100 +100 ppm/C 45 TA = +25C tPU Output Rise/Fall Time TYP 0.25 fOUT Power-Up Time MIN 1.048 fOUT (Note 3) Temperature Frequency Variation CONDITIONS +1.0 % 3300 ppm/V 55 % (Note 5) 10 ms CL = 15pF (both) 20 ns Note 1: All voltages referenced to ground. Note 2: Active supply current combines the standby current with the output current. The output current is defined by I = (CLOAD + 12pF ) x VCC x fOUT for each output when enabled. Note 3: This is the change observed in output frequency due to changes in temperature or voltage. Note 4: This parameter is guaranteed by design. Note 5: This indicates the time between power-up and the outputs becoming active. Typical Operating Characteristics (VCC = +5.0V, TA = +25C, unless otherwise noted.) 400 300 OUT0 =1MHz, OUT1 = 0.25Hz 200 100 0 2.7 3.4 4.1 4.8 SUPPLY VOLTAGE (V) www.maximintegrated.com 5.5 OUT0 = OUT1 = 1MHz 500 400 OUT0 =1MHz, OUT1 = 0.25Hz 300 200 0 -15 10 35 TEMPERATURE (C) 60 1.0 VCC = 5.5V 0.8 VCC = 4.0V 0.6 0.4 0.2 OUT0 = OUT1 = 0.25Hz -40 DS1099 toc03 1.2 DS1099 toc02 600 100 OUT0 = OUT1 = 0.25Hz SUPPLY CURRENT vs. OUTPUT LOAD (BOTH OUTPUTS LOADED EQUALLY), TA = +25C SUPPLY CURRENT vs. TEMPERATURE VCC = 5.5V, CL = 15pF SUPPLY CURRENT (mA) 500 OUT0 = OUT1 = 1MHz SUPPLY CURRENT (A) SUPPLY CURRENT (A) 600 700 DS1099 toc01 700 SUPPLY CURRENT vs. SUPPLY VOLTAGE CL = 15pF, TA = +25C 85 0 VCC = 2.7V 0 10 20 30 40 50 CL (pF) Maxim Integrated 3 DS1099 Low-Frequency Dual EconOscillator Typical Operating Characteristics (continued) (VCC = +5.0V, TA = +25C, unless otherwise noted.) DUTY CYCLE (% CHANGE) SUPPLY CURRENT (A) 160 150 140 130 120 51.0 50.0 TA = +25C 49.0 1.0 TA = +85C DS1099 toc06 TA = -40C FREQUENCY CHANGE vs. SUPPLY VOLTAGE fOUT = 1MHz, TA = +25C, CL = 15pF FREQUENCY (% CHANGE) TA = +25C 170 52.0 DS1099 toc04 180 DUTY CYCLE vs. SUPPLY VOLTAGE OUT0 = OUT1 = 1MHz, CL = 15pF DS1099 toc05 SUPPLY CURRENT vs. VOLTAGE OEO = OE1 = VCC 0.5 0 -0.5 110 3.4 4.1 4.8 48.0 5.5 3.4 2.7 SUPPLY VOLTAGE (V) DS1099 toc07 -0.5 -1.0 -15 10 35 60 85 2.7 3.4 4.1 4.8 5.5 SUPPLY VOLTAGE (V) OUTPUT VOLTAGE LOW vs. OUTPUT CURRENT OUTPUT VOLTAGE HIGH vs. OUTPUT CURRENT VCC = 2.7V, TA = +25C VCC = 2.7V, TA = +25C 2.7 VOH (V) 0.2 0 2.8 2.6 0.3 2.5 OUT0 OUT1 2.4 OUT0 OUT1 0.1 -40 -1.0 5.5 SUPPLY VOLTAGE (V) 0.4 0.5 0 4.8 0.5 VOLTAGE (V) FREQUENCY (% CHANGE) 1.0 FREQUENCY CHANGE vs. TEMPERATURE fOUT = 1MHz, VCC = 4.0V, CL = 15pF 4.1 DS1099 toc09 2.7 DS1099 toc08 100 2.3 0 TEMPERATURE (C) 5 10 15 20 2.2 -5 -4 -3 -2 -1 0 IOH (mA) IOL (mA) Pin Description PIN NAME 1 2 OUT1 3 OUT0 FUNCTION Oscillator Outputs. Each output is forced high when the corresponding OE is high. VCC Positive Supply Terminal 4 GND Ground 5 6 OE0 OE1 Output Enable for OUT0 and OUT1, respectively. When low, the outputs are enabled. When high, the corresponding output is disabled (forced high). 7, 8 N.C. No Connection www.maximintegrated.com Maxim Integrated 4 DS1099 Low-Frequency Dual EconOscillator Functional Diagram VCC VCC MASTER OSCILLATOR 1.048MHz GND DS1099 fMOSC FACTORYPROGRAMMED EEPROM DIVIDER 0 DIVIDE BY 2X (X = X0 = 0...22) OUTPUT DRIVER DIVIDER 1 DIVIDE BY 2X (X = X1 = 0...22) OUTPUT fOUT1 DRIVER fOUT0 OUT0 OUT1 OE0 OE1 Detailed Description The DS1099 consists of a fixed-frequency 1.048MHz master oscillator followed by two independent factory-programmable dividers. The two divider outputs are connected to pins OUT0 and OUT1, which are Table 1. Divider Settings and Output Frequencies independently enabled/disabled using the output-enable pins, OE0 and OE1, respectively. When the output-enable pins are active (low), the corresponding outputs are enabled. If either output-enable pin is tied to its inactive state (high), then the corresponding output is disabled and forced high immediately. The output- enable pins only disable the corresponding output driver(s) and do not shut down the master oscillator or the dividers. DIVIDER SETTING X0 OR X1 DIVISOR fOUT0 OR fOUT1 0 1 1.048MHz 1 2 0.524MHz Since the master oscillator frequency, fMOSC, is fixed, the frequency of OUT0 and OUT1 is determined by DIVIDER 0 and DIVIDER 1, respectively. And since each output has its own divider, fOUT0 and fOUT1 can be programmed independent of each other. 2 4 0.262MHz 3 8 0.131MHz The frequency of the outputs are calculated as follows: 4 16 65.50kHz 5 32 32.75kHz -- -- -- 19 524,288 2Hz 20 1,048,576 1Hz 21 2,097,152 0.5Hz 22 4,194,304 0.25Hz www.maximintegrated.com fOUT0 = fMOSC/2X0 = 1.048MHz/2X0 fOUT1 = fMOSC/2X1 = 1.048MHz/2X1 where X0 is the DIVIDER 0 setting and X1 is the DIVIDER 1 setting. Valid values for X0 and X1 are integers 0 to 22 (dec). Table 1 shows output frequencies and divider values for the range of divider settings. Maxim Integrated 5 DS1099 Low-Frequency Dual EconOscillator The divider settings, X0 and X1, are factory programmed. When placing an order for the DS1099, it is required to specify X0 and X1. If only one output is used, it is recommended that the unused output be disabled. The oscillator outputs are asynchronous. Since the master oscillator and dividers are free running, even when both outputs are disabled, the state of the output when OE becomes active is unknown for up to half an fOUT period. When OE is brought low, the output is enabled instantaneously. Likewise, if the output is disabled while outputting the low half of a cycle, the output instantaneously is forced high before the current cycle is completed. Ordering Information (continued) DIVISOR fOUT A 20 1.048MHz B 21 0.524MHz C 22 0.262MHz D 23 0.131MHz E 24 65.50kHz F 25 32.750kHz G 26 16.375kHz H 27 8.187kHz J 28 4.093kHz K 29 2.046kHz L 210 1.023kHz M 211 511.7Hz N 212 255.8Hz P 213 127.9Hz Q 214 63.96Hz R 215 31.98Hz S 216 16Hz T 217 8Hz U 218 4Hz W 219 2Hz X 220 1Hz Y 221 0.5Hz Z 222 0.25Hz Applications Information Power-Supply Decoupling To achieve best results, it is highly recommended that a decoupling capacitor is used on the IC power-supply pins. Typical values of decoupling capacitors are 0.01F and 0.1F. Use a high-quality, ceramic, surface-mount capacitor, and mount it as close as possible to the VCC and GND pins of the IC to minimize lead inductance. Chip Topology SUBSTRATE CONNECTED TO Ground 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. Branding Information The package branding includes a0 and a1 on the top of the package next to or below 1099. www.maximintegrated.com Maxim Integrated 6 DS1099 Low-Frequency Dual EconOscillator Revision History REVISION NUMBER REVISION DATE 1 9/07 -- 2 5/15 Remove automotive reference from data sheet DESCRIPTION PAGES CHANGED 1, 2, 3, 5, 6 1 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. (c) 2015 Maxim Integrated Products, Inc. 7 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Maxim Integrated: DS1099U-AG+ DS1099U-AG+T DS1099U-BC+ DS1099U-BC+T DS1099U-CC+ DS1099U-CC+T DS1099U-CD+ DS1099U-CD+T DS1099U-FF+T DS1099U-LU+ DS1099U-LU+T DS1099U-PR+ DS1099U-PR+T DS1099U-WA+ DS1099U-WA+T DS1099U-WT+ DS1099U-WT+T DS1099U-FA/V+ DS1099U-FA/V+T DS1099U-FF+ DS1099UWZ+ DS1099U-WZ+T