max2410eeit Maxim Integrated Products, Inc., max2410eeit Datasheet - Page 9

• Manufacturer Part Number: max2410eeit
• Description: Max2410 Low-cost Rf Up/downconverter With Lna And Pa Driver
• Manufacturer: Maxim Integrated Products, Inc.

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 .
_______________Detailed Description
OUTPUT
DRIVER
INPUT
INPUT
LNA
LO
PA
_______________________________________________________________________________________
220pF
220pF
220pF
47pF
47pF
1000pF
V
V
CC
CC
18nH
1pF
V
CC
10
13
12
14
1
2
3
4
5
7
8
GND
V
PADROUT
GND
GND
LNAIN
GND
GND
V
LO
LO
CC
CC
Low-Cost RF Up/Downconverter
TXEN
9
MAX2410
RXEN
6
with LNA and PA Driver
11
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.
GC
TXMXOUT
LNAOUT
RXMXIN
PADRIN
IFOUT
GND
GND
GND
GND
GND
GND
GND
GND
IFIN
16
15
18
17
19
20
28
22
21
27
26
25
24
23
3.9nH
82nH
68nH
Typical Operating Circuit
68nH
V
V
CC
CC
5.6nH
Low-Noise Amplifier (LNA)
1000pF
220pF
220pF
220pF
3.9nH
1000pF
R
OPT
1000pF
220pF
LNA
OUTPUT
RX
MIXER
RFINPUT
TX
MIXER
IFINPUT
PA
DRIVER
INPUT
1000pF
50 RX
MIXER
IFOUTPUT
TX
MIXER
RFOUTPUT
9