MAX2108 Maxim, MAX2108 Datasheet
MAX2108
Manufacturer Part Number
MAX2108
Description
Direct-Conversion Tuner IC
Manufacturer
Maxim
Datasheet
1.MAX2108.pdf
(12 pages)
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Part Number:
MAX2108CEG
Manufacturer:
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The MAX2108 is a low-cost direct-conversion tuner IC
designed for use in digital direct-broadcast satellite
(DBS) television set-top box units and microwave links.
Its direct-conversion architecture reduces system cost
compared to devices with IF-based architectures.
The MAX2108 directly tunes L-band signals to base-
band using a broadband I/Q downconverter. The oper-
ating frequency range spans from 950MHz to
2150MHz. The IC includes a low-noise amplifier (LNA)
with gain control, two downconverter mixers with output
buffers, a 90° quadrature generator, and a divide-by
32/33 prescaler.
19-1449; Rev 0; 4/99
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
DirecTV, PrimeStar, EchoStar DBS Tuners
DVB-Compliant DBS Tuners
Cellular Base Stations
Wireless Local Loop
Broadband Systems
LMDS
Microwave Links
PSOUT
V
CC
12
13
/32
/33
________________________________________________________________ Maxim Integrated Products
PS_SEL
PSOUT
11
14
General Description
GND
GC
10
15
Applications
GND
GND
9
MAX2108
16
GND
N.C.
17
8
Direct-Conversion Tuner IC
18
RFIN
LO
7
RFIN
Pin Configuration appears at end of data sheet.
LO
MAX2108CEG
19
6
Low-Cost Architecture
Operates from Single +5V Supply
On-Chip Quadrature Generator, Dual-Modulus
Prescaler (/32, /33)
Input Levels: -20dBm to -70dBm per Carrier
Over 50dB RF Gain-Control Range
10dB Noise Figure at Maximum Gain
+8dBm IIP3 at Minimum Gain
PART
V
N.C.
20
CC
5
0
GND
V
4
CC
90
21
TEMP. RANGE
0°C to +70°C
Ordering Information
Functional Diagram
GND
V
22
CC
3
QOUT
IOUT
23
2
Q
24 QSOP
I
PIN-PACKAGE
Features
IOUT
QOUT
24
1
1
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