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參數(shù)資料
| 型號(hào)： | DS1085 |
| 英文描述： | 10/100/1000 Base-T Ethernet LAN Switch |
| 中文描述： | EconOscillator頻率合成器 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大小： | 331K |
| 代理商： | DS1085 |
122002
FEATURES
User-Programmable Frequency Synthesizer
Programmable From 8.1kHz to 133MHz
Dual Synchronous Outputs
8.2MHz to 133MHz Reference Oscillator
Output
8.1kHz to 133MHz Main Oscillator Output
Three Resolution Options
2-Wire Serial Interface
0.75% Absolute Accuracy
Nonvolatile (NV) Frequency Settings
Single 5V Supply
No External Timing Components
Power-Down Mode
PIN ASSIGNMENT
PIN DESCRIPTION
OUT1
- Main Oscillator Output
OUT0
- Reference Oscillator Output
V
CC
- 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
DEVICE
PACKAGE
STEP
SIZE
10kHz
OSCILLATOR
OUTPUT RANGE
8.1kHz to 133MHz
DS1085Z-10
150mil SO
DS1085Z-25
150mil SO
25kHz
8.1kHz to 133MHz
DS1085Z-50
150mil SO
50kHz
8.1kHz to 133MHz
DESCRIPTION
The DS1085 is a dual-output frequency synthesizer requiring no external timing components for
operation. It can be used as a standalone oscillator or as a dynamically programmed, processor-controlled
peripheral device. An internal master oscillator can be programmed from 66MHz to 133MHz with three
resolution options of 10kHz, 25kHz, and 50kHz. A programmable, 3-bit prescaler (divide-by-1, 2, 4, or 8)
permits the generation of a reference oscillator output (OUT0) from the master, ranging from 8.2MHz to
133MHz. A second independent prescaler and a 1-to-1025 divider allows the generation of a main
oscillator output (OUT1) from 8.1kHz to 133MHz. The two outputs, although synchronous with the
master, can be independently programmed. The combination of programmable master oscillator,
prescalers, and dividers allows the generation of thousands of user-specified frequencies. All master
oscillator, prescaler, and divider settings are stored in NV (EEPROM) memory, providing a default value
on power-up that allows it to be used as a standalone oscillator. A 2-wire serial interface allows in-circuit,
on-the-fly programming of the master oscillator, prescalers (P0 and P1), and divider (N). This allows
dynamic frequency modification, if required, or, for fixed-frequency applications, the DS1085 can be
used with factory- or user-programmed values.
EconOscillator is a trademark of Dallas Semiconductor.
DS1085
EconOscillator Frequency Synthesizer
www.maxim-ic.com
SO (150mil)
SCL
CTRL0
CTRL1
OUT1
OUT0
V
CC
GND
8
7
6
5
1
2
3
4
SDA
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1085L | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:3.3V EconOscillator Frequency Synthesizer |
| DS1085LZ-12 | 功能描述:可編程振蕩器 3.3V EconOscillator f Synthesizer RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| DS1085LZ-12+ | 功能描述:可編程振蕩器 3.3V EconOscillator f Synthesizer RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| DS1085LZ-12B2 | 功能描述:可編程振蕩器 RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| DS1085LZ-12B2+ | 功能描述:可編程振蕩器 3.3V EconOscillator f Synthesizer RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
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