19-0370; Rev 0; 2/95
Qu a d ra t u re Dig it ize r Circ u it s
MAX210Subcir
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX2100 family of quadrature digitizers offers
complete solutions to digital demodulation problems.
The flagship of the MAX2100 family is the MAX2101 6-
bit Quadrature Digitizer. The subcircuits derived from
the MAX2101 provide excellent starting points for the
RF IC designer to develop components that bridge the
gap between existing RF downconverters and CMOS
digital signal processors.
♦ Operation at IFs from 70MHz to 700MHz*
♦ Precision Quadrature Demodulation
(1°, 0.2dB typ Mismatch, f = 650MHz)
♦ Matched Active Filters with Electronically Variable
Cutoff from 10MHz to 30MHz
♦ 40dB of AGC Range
♦ High-Speed 6-Bit ADCs with 5.8 (typ)
Each MAX2100 subcircuit comes with a detailed sche-
matic, TEKSPICE or PSPICE netlist, models, and GDSII
la yout for inc orp ora tion in your own c us tom ASIC
design. These subcircuits can be used separately or in
combination to produce complete demodulation and
digitization components for intermediate frequencies
(IF) ra ng ing from 70MHz to 700MHz, a nd for b a s e
bandwidths to 80MHz*. All are powered by a +5V sup-
ply, and are implemented in Maxim’s proprietary GST-1
Effective Bits (f = 30MHz, f = 120Msps) and
200MHz Input Bandwidth
IN
C
______________Ord e rin g In fo rm a t io n
cuits
PART
SIMULATOR
PSPICE
MEDIUM
FORMAT
DOS
TAR
X21nnPFD
X21nnPFT
X21nnPTT
X21nnPHT
X21nnPLT
X21nnPET
X21nnTFT
X21nnTTT
X21nnTHT
X21nnTLT
X21nnTET
3.5" Floppy
3.5" Floppy
Tape
PSPICE
wafer fabrication process with NPN f = 13GHz.
T
PSPICE
TAR
Maxim does not guarantee specifications or fitness for
use of these subcircuits in your custom ASIC. The sub-
circuits are intended to demonstrate Maxim’s process
and design capability, and to provide circuit designers
with a “he a d s ta rt” in d e ve lop ing the ir own ASIC.
Operation of these subcircuits in a customer-designed
ASIC is the responsibility of the customer.
PSPICE
9-track 6250 bpi
9-track 1600 bpi
Electronic mail
3.5" Floppy
Tape
TAR
PSPICE
TAR
PSPICE
TAR
TEKSPICE
TEKSPICE
TEKSPICE
TEKSPICE
TEKSPICE
TAR
TAR
9-track 6250 bpi
9-track 1600 bpi
Electronic mail
TAR
TAR
________________________Ap p lic a t io n s
Recovery of PSK and QAM Modulated RF Carriers
Direct-Broadcast Satellite (DBS) Systems
Television Receive-Only (TVRO) Systems
Cable Television (CATV) Systems
TAR
The MAX2100 cells are available in the above formats to
customers who have purchased a GST-1 ASIC Start-Up
Package and signed Maxim’s Non-Disclosure Agreement.
_______________________________________________________________Blo c k Dia g ra m
I OUT
6
X2114
400MHz to
700MHz
0°
IF IN
-90°
LO X2116
X2112
X2118
Q OUT
6
MAX2101*
X2111
X2113
X2114
fc = 10MHz to 30MHz
A/D CLOCK
60MHz
*AVAILABLE AS A STANDARD PRODUCT.
SEE MAX2101 DATA SHEET FOR SPECIFICATIONS AND ORDERING INFORMATION.
*VCO and Quadrature Generator limited to 400MHz to 700MHz
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .