DS1077

EconOscillator™/Divider

Programmable, All-Silicon Oscillator Runs Up to 133MHz with No External Components


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Description

The DS1077 is a dual-output, programmable, fixed-frequency oscillator requiring no external components for operation. The DS1077 can be used as a processor-controlled frequency synthesizer or as a standalone oscillator. The two synchronous output operating frequencies are user-adjustable in submultiples of the master frequency through the use of two on-chip programmable prescalers and a divider. The specific output frequencies chosen are stored in NV (EEPROM) memory. The DS1077 defaults to these values upon power-up.

The DS1077 features a 2-wire serial interface that allows in-circuit on-the-fly programming of the programmable prescalers (P0 & P1) and divider (N) with the desired values being stored in NV (EEPROM) memory. Design changes can be accommodated in-circuit on-the-fly by simply programming different values into the device (or reprogramming previously programmed devices). Alternatively, for fixed frequency applications, previously programmed devices can be used and no connection to the serial interface is required. Pre-programmed devices can be ordered in customer-requested frequencies.

The DS1077 is available in 8-pin SO or µSOP packages, allowing the generation of a clock signal easily, economically, and using minimal board area. Chip-scale packaging is also available on request.
DS1077: Block Diagram DS1077: Block Diagram Enlarge+

Key Features

  • Processor-controlled or standalone solidstate oscillator
  • Frequency changes on-the-fly
  • Dual low-jitter, synchronous fixed frequency outputs
  • 2-wire serial interface
  • Frequency outputs 8.1kHz to 133MHz
  • ±0.5% variation over temp (+25°C to +70°C)
  • ±0.5% initial tolerance
  • Nonvolatile (NV) frequency settings
  • Single 5V supply
  • No external components
  • Power-down mode
  • Synchronous output gating

Applications/Uses

  • Cable Modems
  • Cell Phones
  • Computer Peripherals
  • Copiers
  • PCs
  • Printers
Part NumberfOUT
(MHz)
fOUT
(kHz)
ΔfOUT
(%)
User Prog. fOUTSpread SpectrumVCC
(V)
Reset OutOper. Temp.
(°C)
Package/PinsBudgetary
Price
maxminmaxSee Notes
DS1077 668.1+1.25 to -1.65 (0 to 70°C)I2CNo4.75 to 5.25No-40 to +85
SOIC (N)/8
UMAX/8
$1.43 @1k
See All Silicon Oscillators (17)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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