MAX2410E 查看數據表（PDF） - Maxim Integrated
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MAX2410E Datasheet PDF : 12 Pages
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Low-Cost RF Up/Downconverter
with LNA and PA Driver
Typical Operating Circuit
220pF
LNA
INPUT
1pF
1
GND
2
LNAIN
3
GND
28
GND
LNAOUT 27
GND 26
220pF
LNA
OUTPUT
VCC
47pF
4
GND
5 VCC
MAX2410
25
GND
RXMXIN 24
3.9nH
GND 23
220pF
RX
MIXER
RFINPUT
LO
INPUT
220pF
7 LO
VCC
47pF
1000pF
8
LO
10
VCC
VCC
18nH
PA
DRIVER
OUTPUT
220pF
13 PADROUT
12 GND
14
GND
TXEN
9
RXEN
6
22
IFIN
82nH
1000pF
VCC
TX
MIXER
IFINPUT
1000pF
IFOUT 21
GND 20
GND 18
17
GND
TXMXOUT 19
16
PADRIN
15
GND
GC
11
68nH
68nH
VCC
ROPT
1000pF
50Ω RX
MIXER
IFOUTPUT
1000pF
5.6nH
3.9nH
220pF
220pF
TX
MIXER
RFOUTPUT
PA
DRIVER
INPUT
_______________Detailed Description
The MAX2410 consists of five major components: a
transmit mixer, a variable-gain power-amplifier (PA)
driver, a low-noise amplifier (LNA), a receive mixer, and
power-management section.
The following sections describe each block in the
MAX2410 Functional Diagram.
Low-Noise Amplifier (LNA)
The LNA is a wideband, single-ended cascode amplifi-
er that can be used over a wide range of frequencies
(refer to the LNA Gain vs. Frequency graph in the
Typical Operating Characteristics). Its port impedances
are optimized for operation around 1.9GHz, requiring
only a 1pF shunt capacitor at the LNA input for a VSWR
of better than 2:1 and a noise figure of 2.4dB. As with
every LNA, the input match can be traded off for better
noise figure.
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