MAX2101 Datasheet, PDF (1/24 Pages) Maxim Integrated Products – 6-Bit Quadrature Digitizer

19-0298; Rev 4; 5/96
EVAALVUAAILTAIOBNLEKIT
6-Bit Quadrature Digitizer
_______________General Description
The MAX2101 6-bit quadrature digitizer combines quad-
rature demodulation with analog-to-digital conversion on
a single bipolar silicon die. This unique RF-to-Bits^TM
function bridges the gap between existing RF downcon-
verters and CMOS digital signal processors (DSPs).
The MAX2101’s simple receiver subsystem is designed
for digital communications systems such as those used
in DBS, TVRO, WLAN, and other applications.
The MAX2101 accepts input signals from 400MHz to
700MHz and applies adjustable gain, providing at least
40dB of dynamic range.
Each baseband is filtered by an on-chip, 5th-order
Butterworth lowpass filter, or the user can select an
external filter path. Baseband sample rate is 60Msps.
The MAX2101 is available in a commercial temperature
range, 100-pin MQFP package.
____________________________Features
o ADCs Provide Greater than 5.5 Effective Bits at
f_S = 60Msps, f_IN = 15MHz
o Fully Integrated Lowpass Filters with
Externally Variable Bandwidth (10MHz to 30MHz)
o 40dB Dynamic Range
o Integrated VCO and Quadrature Generation
Network for I/Q Demodulation
o Divide-by-16 Prescaler for Oscillator PLL
o Programmable Counter for Variable Sample Rates
o Signal-Detection Function
o Selectable Offset Binary or Twos-Complement
Output Data Format
o Automatic Baseband Offset Cancellation
________________________Applications
Recovery of PSK and QAM Modulated RF Carriers
Direct-Broadcast Satellite (DBS) Systems
Television Receive-Only (TVRO) Systems
Cable Television (CATV) Systems
Wireless Local Area Networks (WLANs)
______________Ordering Information
PART
MAX2101CMQ
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
100 MQFP
__________________________________________________Typical Application Circuit
LOW-NOISE AMPLIFIER
X/KU BAND
H POLARIZATION
V POLARIZATION
LOCAL OSCILLATOR
LOW-NOISE BLOCK
950MHz to 2000MHz
LOCAL OSCILLATOR
L-BAND DOWNCONVERTER
600MHz
(NARROW BAND)
0°
QUADRATURE
90°
GENERATION
A/D
CONVERSION
DIV-16
612MHz PHASE LOCKED
MAX2101
TM_{RF-to-Bits is a registered trademark of Tektronix, Inc.}
MATCHED
FILTERS
CLOCK
AND
CARRIER
RECOVERY
ERROR
DETECTION
AND
CORRECTION
MISCELLANEOUS
DSP
DSP POST PROCESSING
________________________________________________________________ Maxim Integrated Products 1
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