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PDF DS1088L Data sheet ( Hoja de datos )
| Número de pieza | DS1088L | |
| Descripción | Low-Cost Fixed-Frequency EconOscillator | |
| Fabricantes | Dallas Semiconductor | |
| Logotipo |  |
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Rev 1; 5/05
Low-Cost Fixed-Frequency EconOscillator™
General Description
The DS1088L is a low-cost clock generator that pro-
duces a square-wave output without external timing
components. The fixed-frequency oscillator is available
in factory-calibrated frequencies from 312kHz to
133MHz. The DS1088L has a power-down pin for
power-sensitive applications.
Applications
Printers
Copiers
Automotive Telematics
Computer Peripherals
POS Terminals
Cable Modems
Features
♦ Factory-Programmed, Square-Wave Generator
from 312kHz to 133MHz
♦ Single Output
♦ No External Timing Components Required
♦ 2.7V to 3.6V Supply
♦ Power-Down Mode
♦ 1.0% Frequency Tolerance Over Temperature
and Voltage
♦ Wide Temperature Range (-20°C to +85°C)
Ordering Information
PART
FREQUENCY (MHz)
TEMP RANGE
PIN-PACKAGE
DS1088LU-02
DS1088LU-10
www.DataSheet4U.com DS1088LU-16
DS1088LU-66
DS1088LU-100
DS1088LU-yyy
2.048
10.0
16.6
66.6
100.0
*
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
-20°C to +85°C
8 µSOP
8 µSOP
8 µSOP
8 µSOP
8 µSOP
8 µSOP
yyy = frequency
*Email [email protected] for information/questions concerning custom frequencies.
Typical Operating Circuit
Pin Configuration
312kHz TO 133MHz
OUTPUT
VCC
OUT DNC
DS1088L
VCC DNC
VCC PDN
GND GND
VCC
TOP VIEW
OUT 1
VCC 2
VCC 3
GND 4
DS1088L
8 DNC
7 DNC
6 PDN
5 GND
DECOUPLING CAPACITORS
(0.1µF AND 0.01µF)
EconOscillator is a trademark of Dallas Semiconductor.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Low-Cost Fixed-Frequency EconOscillator™
Pin Description
PIN NAME
FUNCTION
1 OUT Oscillator Output
2 VCC Power Supply
3 VCC Power Supply
4 GND Ground
5 GND Ground
Power-Down. When the pin is high, the
6 PDN oscillator is enabled. When the pin is
low, the oscillator is disabled
(power-down mode).
7 DNC Do Not Connect. The DNC pins are
internally connected to ground.
8 DNC Do Not Connect
Detailed Description
The DS1088L is a low-cost clock generator that pro-
duces a square-wave output without external timing
components. The fixed-frequency oscillator is available
in factory-calibrated frequencies from 312kHz to
133MHz. The DS1088L has a power-down pin for
power-sensitive applications. A block diagram of the
DS1088L is shown in Figure 1.
Output Frequency
The internal oscillator frequency is divided by the facto-
ry-programmed prescaler to produce an output fre-
quency of 312kHz to 133MHz. See the Standard
Frequency Options table for a list of standard frequen-
cies. Contact factory for custom frequencies.
Power-Down Mode
The PDN pin disables the internal oscillator and the
oscillator output for power-sensitive applications. The
power-down pin must remain low for at least two output
frequency cycles plus 10µs for deglitching purposes.
On power-up, the output is disabled until power is sta-
ble and the voltage-controlled oscillator has generated
512 clock cycles.
Applications Information
Power-Supply Decoupling
To achieve the best results when using the DS1088L,
the power supply must be decoupled with 0.01µF and
0.1µF high-quality, ceramic, surface-mount capacitors.
Surface-mount components minimize lead inductance,
which improves performance, and tend to have ade-
quate high-frequency response for decoupling applica-
tions. These capacitors should be placed as close to
the VCC and GND pins as possible.
Chip Topology
TRANSISTOR COUNT: 4507
SUBSTRATE CONNECTED TO GROUND.
Package Information
For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.
VCC
VCC
VOLTAGE-
EEPROM
CONTROLLED
CONTROL
OSCILLATOR
PDN 80MHz TO 160MHz
GND
PRESCALER
BY 1, 2, 4...256
DS1088L
Figure 1. Block Diagram
OUT
(312kHz
TO 133MHz)
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5
© 2005 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
is a registered trademark of Dallas Semiconductor Corporation.
5 Page | ||
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| PDF Descargar | [ Datasheet DS1088L.PDF ] | |
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