DS1073M-100 Maxim Integrated Products, DS1073M-100 Datasheet

ECONOSCILLATOR/DIV 100MHZ 8-DIP

DS1073M-100

Manufacturer Part Number
DS1073M-100
Description
ECONOSCILLATOR/DIV 100MHZ 8-DIP
Manufacturer
Maxim Integrated Products
Series
EconOscillator™r
Type
Oscillator, Fixed Frequency, Dualr
Datasheet

Specifications of DS1073M-100

Frequency
100MHz
Voltage - Supply
2.7 V ~ 3.6 V
Current - Supply
25mA
Operating Temperature
-40°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Count
-
www.maxim-ic.com
FEATURES
§ Dual fixed-frequency outputs (30kHz to
§ User-programmable on-chip dividers (from 1
§ User-programmable on-chip prescaler (1, 2,
§ No external components
§ ±0.5% initial tolerance (commercial)
§ ±1% variation over commercial temperature
§ Internal clock, external clock or crystal
§ 2.7 to 3.6V supply
§ Power-down mode
§ Synchronous output gating
§ Industrial temp operation with relaxed
DESCRIPTION
The DS1073 is a fixed-frequency oscillator requiring no external components for operation. Numerous
operating frequencies are possible in the range of approximately 27.3kHz to 100MHz through the use of
an on-chip programmable prescaler and divider.
The DS1073 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 DS1073 is shipped from the factory configured for half the maximum operating frequency. Contact
the factory for specially programmed devices. As alternatives to the onboard 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 DS1073 features a dual-purpose I/O 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 I/O pin becomes the oscillator output.
The DS1073 may be operated over either the commercial (T
85C) temperature ranges. AC and DC Electrical Characteristics Tables for operation in both these
temperature ranges are given at the end of the data sheet.
100MHz)
to 513)
4)
and voltage
reference options
specifications
1 of 18
PIN ASSIGNMENT
FREQUENCY OPTIONS
Part No.
DS1073M/Z-100
DS1073M/Z-80
DS1073M/Z-66
DS1073M/Z-60
DS1073Z-XXX
DS1073M-XXX
OUT0
A
GND
V
I/O
= 0C to 70C) or industrial (T
CC
3V EconOscillator/Divider
XXX = Frequency option
2
4
1
3
8
7
5
6
150-mil SOIC
300-mil DIP
OSCIN
PDN/SELX
XTAL
OE
Max O/P Freq.
100.000MHz
80.000MHz
66.667MHz
60.000MHz
DS1073
A
= -40C to +
090503

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DS1073M-100 Summary of contents

Page 1

... EconOscillator/Divider PIN ASSIGNMENT OUT0 GND 4 5 DS1073Z-XXX 150-mil SOIC DS1073M-XXX 300-mil DIP XXX = Frequency option FREQUENCY OPTIONS Part No. DS1073M/Z-100 DS1073M/Z-80 DS1073M/Z-66 DS1073M/Z- 70C) or industrial ( DS1073 OSCIN XTAL OE PDN/SELX Max O/P Freq. 100.000MHz 80.000MHz 66.667MHz 60.000MHz = -40C 090503 ...

Page 2

The DS1073 is available in 8-pin DIP or SOIC packages, allowing the generation of a clock signal easily, economically and using minimal board area. BLOCK DIAGRAM Figure 1 PART INTOSC NO. FREQUENCY SUFFIX -100 100.000 MHz -80 80.000 MHz -66 ...

Page 3

PIN DESCRIPTIONS IN/OUT Pin (I/O): This pin is the main oscillator output, with a frequency determined by clock reference, M and N dividers. Except in programming mode this pin is always an output. In programming mode this pin is an ...

Page 4

USER-PROGRAMMABLE REGISTERS The following registers can be programmed by the user to determine operating frequency and mode of operation. Details of how these registers are programmed can be found in a later section, in this section the function of the ...

Page 5

Table 2 DIV1 E/ I MSEL BIT BIT* BIT *Assuming PDN bit = 1, otherwise internal/external selection will be controlled by the DIV WORD ...

Page 6

OPERATION OF OUTPUT ENABLE Since the output enable, internal master oscillator and/or external master oscillator are likely all asynchronous there is the possibility of timing difficulties in the application. difficulties the DS1073 features an “enabling sequencer” to produce predictable results ...

Page 7

Figure 6 SELECT TIMING If the PDN bit is set to 0, the externalor crystal reference. The “Enabling Sequencer” is again employed to ensure this transition occurs in a glitch-free fashion. Two asynchronous clock signals are involved, INTCLK is the ...

Page 8

FROM EXTERNAL TO INTERNAL CLOCK This is accomplished by a low to high transition on the triggered, to allow for the possibility of a clock signal not being present at OSCIN. Note therefore, that if a constant high-level signal is ...

Page 9

POWER-UP When is taken to a high level the following power-up sequence occurs: PDN 1. Enable internal oscillator and/or OSCIN buffer. 2. Set M and N to maximum values. 3. Wait approximately 256 cycles of MCLK for it to stabilize. ...

Page 10

Figure 10 PROGRAMMING Normally when power is applied to the supply voltage pin the device will enter its normal operating mode following the power-on reset sequence. However the device can be made to enter a programming mode if a pullup ...

Page 11

NOTE: To ensure normal operation any external pullup applied to I/O must be greater than 20kW in value. This will cause the I/O pin to remain below STAB Figure 12 TRANSACTION SEQUENCE The sequence for accessing the ...

Page 12

Read DIV Register [A1H] This command allows the bus master to read the DS1073’s DIV register. Write MUX Register [02H] This command allows the bus master to write to the DS1073’s MUX register. Read MUX Register [A2H] This command allows ...

Page 13

READ DATA TIME SLOT Figure 16 RETURN TO NORMAL OPERATION When programming is complete the DS1073 should be powered down. If the pullup resistor on the I/O pin is removed, normal device operation will be restored next time power is ...

Page 14

ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...

Page 15

AC ELECTRICAL CHARACTERISTICS (T PARAMETER Output Frequency Accuracy Combined Frequency Variation Long Term Stability Maximum Input Frequency Minimum Output Frequency Power-Up Time Enable OUT from PDN ↑ Enable OUT0 from PDN ↑ I/O Hi-Z from PDN ↓ OUT0 Hi-Z from ...

Page 16

AC ELECTRICAL CHARACTERISTICS – CALCULATED PARAMETERS The following characteristics are derived from various device-operating parameters (frequency, mode, etc.). They are not specifically tested or guaranteed and may differ from the min and max limits shown by a small amount due ...

Page 17

DC ELECTRICAL CHARACTERISTICS PARAMETER Supply Voltage High-level Output Voltage (I/O, OUT0) Low-level Output Voltage (I/O, OUT0) High-level Input Voltage Low-level Input Voltage High-level Input Current ( , OE) PDN / SELX (OSCIN) Low-level Input Current( , OE) PDN / SELX ...

Page 18

AC ELECTRICAL CHARACTERISTICS PARAMETER Output Frequency Accuracy Combined Frequency Variation Long Term Stability Maximum Input Frequency Minimum Output Frequency Power-Up Time Enable OUT from PDN ↑ Enable OUT0 from PDN ↑ I/O Hi-Z from PDN ↓ OUT0 Hi-Z from PDN ...

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