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參數(shù)資料
| 型號： | MC12148D |
| 廠商： | MOTOROLA INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | Switch Mode Power Supply; Series:MFA; Output Voltage:12VDC; Output Power Max:350W; Output Current:29A; Number of Outputs:1; Efficiency:86%; External Depth:3.20"; External Height:1.50"; External Width:6.80" |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | PLASTIC, SO-8 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 82K |
| 代理商： | MC12148D |
SEMICONDUCTOR
TECHNICAL DATA
LOW POWER
VOLTAGE CONTROLLED
OSCILLATOR
Order this document by MC12148/D
8
1
GND
VCC
7
2
VCCO
AGC
6
3
Out
TANK
5
4
GND
Vref
Device
Operating
Temperature Range
Package
ORDERING INFORMATION
MC12148D
MC12148SD
TA = – 40
°
to +85
°
C
SO–8
SSOP–8
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
(Top View)
PIN CONNECTIONS
SD SUFFIX
PLASTIC PACKAGE
CASE 940
(SSOP–8)
8
1
The MC12148 requires an external parallel tank circuit consisting of the
inductor (L) and capacitor (C). A varactor diode may be incorporated into the
tank circuit to provide a voltage variable input for the oscillator (VCO). This
device may also be used in many other applications requiring a fixed
frequency clock.
The MC12148 is ideal in applications requiring a local oscillator. Systems
include electronic test equipment and digital high–speed
telecommunications.
The MC12148 is based on the VCO circuit topology of the MC1648. The
MC12148 has been realized utilizing Motorola’s MOSAIC III advanced
bipolar process technology which results in a design which can operate at a
much higher frequency than the MC1648 while utilizing half the current.
Please consult with the MC1648 data sheet for additional background
information.
The ECL output circuitry of the MC12148 is not a traditional open emitter
output structure and instead has an on–chip termination resistor with a
nominal value of 500 ohms. This facilitates direct ac–coupling of the output
signal into a transmission line. Because of this output configuration, an
external pull–down resistor is not required to provide the output with a dc
current path. This output is intended to drive one ECL load. If the user
needs to fanout the signal, an ECL buffer such as the MC10EL16 Line
Receiver/Driver should be used.
NOTE: The MC12148 is NOT useable as a crystal oscillator.
Typical Operating Frequency Up to 1100 MHz
Low–Power 20 mA at 5.0 Vdc Power Supply
8–Pin SOIC Package
Phase Noise –90 dBc/Hz at 25 kHz Typical
Motorola, Inc. 1997
Rev 5
BLOCK DIAGRAM
(Typical Test Circuit)
7
8
6
5
2
1
3
4
GND
VCCO
Out
GND
VCC
AGC
TANK Vref
1200
*
Fout
Vin
51K
0.1
μ
F
* The 1200
resistor
and the scope
termination impedance
constitute a 25:1
attenuator probe.
0.1
μ
F
0.01
μ
F
100
μ
F
0.1
μ
F
100
μ
F
0.01
μ
F
0.1
μ
F
VCCO
VCC = 4.5 to 5.5 V
相關PDF資料 |
PDF描述 |
|---|---|
| MC12148SD | PSU, 350W 24V SINGLE O/P ; Voltage, output:24V; Current, output:14.5A; Power rating:350W; Voltage, supply min:90V; Voltage, supply max:264V; Length / Height, external:38.1mm; Width, external:81.3mm; Depth, external:172mm; Current, |
| MC12202D | MECL PLL COMPONENTS Serial Input PLL Frequency Synthesizer |
| MC12202 | MECL PLL COMPONENTS Serial Input PLL Frequency Synthesizer |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC12148SD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW POWER VOLTAGE CONTROLLED OSCILLATOR |
| MC12149 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:LOW POWER VOLTAGE CONTROLLED OSCILLATOR BUFFER |
| MC12149D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW POWER VOLTAGE CONTROLLED OSCILLATOR BUFFER |
| MC12149SD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:LOW POWER VOLTAGE CONTROLLED OSCILLATOR BUFFER |
| MC1214F | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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