DS1075-IND
EconOscillator/Divider
www.dalsemi.com
FEATURES
PIN ASSIGNMENT
§ Dual Fixed frequency outputs (30 kHz - 100
MHz)
I/O
1
8
OSCIN
OUT0
VCC
7
6
5
2
3
4
XTAL
§ User-programmable on-chip dividers (from 1
- 513)
§ User-programmable on-chip prescaler (1, 2,
4)
§ No external components
§ ±0.5% initial tolerance
§ ±3% variation over temperature and voltage
§ Internal clock, external clock or crystal
reference options
OE
PDN/SELX
GND
DS1075Z 150-mil SOIC
DS1075M-IND 300-mil DIP
FREQUENCY OPTIONS
Part No.
Max O/P freq.
DS1075-100 IND
DS1075-80 IND
DS1075-66 IND
DS1075-60 IND
100.000
80.000
66.667
60.000
§ Single 5V supply
§ Power-down mode
§ Synchronous output gating
DESCRIPTION
The DS1075-IND EconOscillator/Divider is a fixed frequency oscillator requiring no external
components for operation. Numerous operating frequencies are possible in the range of approximately
30kHz to 100 MHz through the use of an on-chip programmable prescaler and divider.
The DS1075-IND features a master oscillator followed by a prescaler and then a programmable divider.
The prescaler and programmable divider are user-programmable with the desired values being stored in
non-volatile memory. This allows the user to buy an off the shelf component and program it on-site prior
to board production. Design changes can be accommodated on the fly by simply programming different
values into the device (or reprogramming previously programmed devices).
The DS1075-IND is shipped from the factory configured for half the maximum operating frequency.
Contact the factory for specially programmed devices. As alternatives to the on-board oscillator an
external clock signal or a crystal may be used as a reference. The choice of reference source (internal or
external) is user-selectable at the time of programming (or on the fly if the SEL mode is chosen).
The DS1075-IND features a dual-purpose Input/Output pin. If the device is powered up in Program
mode this pin can be used to input serial data to the on chip registers. After a Write command this data is
stored in non-volatile memory. When the chip is subsequently powered up in operating mode these
values are automatically restored to the on-chip registers and the Input/ Output pin becomes the oscillator
output.
The DS1075-IND is available in 8-pin DIP or SOIC packages, allowing the generation of a clock signal
easily, economically and using minimal board area.
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