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参数资料
| 型号： | MC13144D |
| 厂商： | MOTOROLA INC |
| 元件分类： | 衰减器 |
| 英文描述： | VHF - 2.0 GHz LOW NOISE AMPLIFIER WITH PROGRAMMABLE BIAS |
| 中文描述： | 2000 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER |
| 封装： | PLASTIC, SO-8 |
| 文件页数： | 4/8页 |
| 文件大小： | 135K |
| 代理商： | MC13144D |
MC13144
4
MOTOROLA ANALOG IC DEVICE DATA
APPLICATIONS INFORMATION
Evaluation PC Board
The evaluation PCB is very versatile and is intended to
be used across the entire useful frequency range of this
device. The PC board layout accommodates all SMT
components on the circuit side (see Circuit Side Component
Placement View).
Component Selection
The evaluation PC board is laid out for the 4DFA (2 pole
SMD Type) and 4DFB (3 pole SMD Type) filters which are
available for applications in Cellular and GSM, GPS (1.2 to
1.5 GHz), DECT, PHS and PCS (1.8 to 2.0 GHz) and
ISM Bands (902 to 928 MHz and 2.4 to 2.5 GHz). In the
926.5 MHz Application Circuit, a ceramic deielectric filter
is used (Toko part # 4DFA–926A10).
LNA Input/Output
The LNA input impedance is the base of a common emitter
cascode amplifier. The LNA output is the collector of the
cascode stage and it is loaded with a series resistor of 400
and a capacitor of 10 pF to provide stability.
Digitally Programmable Bias/Enable
The LNA is enabled by a 2 bit (En1 and En2)
programmable bias circuit. The internal circuit shows the
comparator circuit which programs the internal regulator. The
logic table below shows the bias and typical performance.
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f = 900 mHz
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ICC/Gain
En1 Low
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En2 Low
En2 High
En1 High
0 mA/–22 dB
1.2 mA/9.2 dB
3.4 mA/13 dB
9.4 mA/17 dB
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f = 1900 mHz
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ICC/Gain
En1 Low
En2 Low
En2 High
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En1 High
0 mA/–22 dB
1.2 mA/7.5 dB
3.4 mA/10 dB
8.2 mA/13 dB
Input/Output Matching
A typical application at 900 MHz yields 17 dB gain and
1.4 dB noise figure. In this circuit a series inductor of 5.6 nH
is used to match the input and a shunt inductor of 8.2 nH
which also serves as an RFC and a series capacitor of 0.9 p
is used to match the LNA output to 50
load impedance.
It may be desirable to use a RF ceramic or SAW filter after
the LNA when driving a mixer to provide image frequency
rejection. The image filter is selected based on cost, size and
performance tradeoffs. Typical RF filters have 3.0 to 5.0 dB
insertion loss. Interface matching between the RF input, RF
filter and the mixer is shown in Application Circuit and the
Component Placement View.
A typical application at 1900 MHz yields 13 dB gain and
2.7 dB noise figure. In this circuit a series inductor of 5.6 nH
and a series capacitor of 1.0 pF are used to match the input
and a shut inductor of 2.0 nH and a series capacitor of 2.0 pF
are used to match the LNA output to 50
load impedance.
Figure 2. MC13144D Application Circuit
(926.5 MHz)
8
RF
Input
En1
RF
Output
8.2 nH
VCC
En2
5.6 nH
47 p
100 p
100 p
100 n
7
6
5
1
2
3
4
47
39 nH
8.2 nH
Toko
Ceramic
Filter
0.4 p
VCC
1.0 M
MC13144D
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PDF描述 |
|---|---|
| MC13144 | VHF - 2.0 GHz LOW NOISE AMPLIFIER WITH PROGRAMMABLE BIAS |
| MC13145FTA | UHF WIDEBAND RECEIVER SUBSYSTEM (LNA, Mixer, VCO, Prescalar, IF Subsystem, Coilless Detector) |
| MC13145 | UHF WIDEBAND RECEIVER SUBSYSTEM (LNA, Mixer, VCO, Prescalar, IF Subsystem, Coilless Detector) |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC13145 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:UHF WIDEBAND RECEIVER SUBSYSTEM (LNA, Mixer, VCO, Prescalar, IF Subsystem, Coilless Detector) |
| MC13145FTA | 制造商:Motorola Inc 功能描述:QuadRATURE DEMODULATOR, 48 Pin, Plastic, QFP |
| MC13146 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:LOW POWER DC - 2.0 GHz TRANSMITTER |
| MC13146FTA | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Low Power Integrated Transmitter for ISM Band Applications |
| MC1314P | 制造商:Motorola Inc 功能描述:ATTENUATOR, 16 Pin, Plastic, DIP |
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