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DS1077Z-125 Datasheet(PDF) 1 Page - Dallas Semiconductor

Part No. DS1077Z-125
Description  EconOscillator/Divider
Download  21 Pages
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1077Z-125 Datasheet(HTML) 1 Page - Dallas Semiconductor

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022703
FEATURES
§ Processor-controlled or standalone solid-
state 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
STANDARD FREQUENCY OPTION
Note: x denotes package option
DS1077x-133
133.333MHz to 16.2kHz
DS1077x-125
125.000MHz to 15.2kHz
DS1077x-120
120.000MHz to 14.6kHz
DS1077x-100
100.000MHz to 12.2kHz
DS1077x-66
66.666MHz to
8.1kHz
PIN ASSIGNMENT
OUT1
OUT0
1
2
3
4
VDD
GND
SCL
CTRL0
CTRL1
SDA
8
7
6
5
PIN DESCRIPTION
OUT1
- Main Oscillator Output
OUT0
- Reference Output
VCC
- Power Supply Voltage
GND
- Ground
CTRL1
- Control Pin for OUT1
CTRL0
- Control Pin for OUT0
SDA
- 2-Wire Serial Data
Input/Output
SCL
- 2-Wire Serial Clock
ORDERING INFORMATION
Note: XXX denotes frequency option
DS1077Z-XXX
8-Pin 150mil SO
DS1077U-XXX
8-Pin 118mil µSOP
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
EconOscillator/Divider
www.maxim-ic.com
150mil SO
118mil µSOP Package
VCC
EconOscillator is a trademark of Dallas Semiconductor.


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