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GC3021A Datasheet(PDF) 3 Page - Texas Instruments

Part No. GC3021A
Description  3.3V MIXER AND CARRIER REMOVAL CHIP
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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GC3021A Datasheet(HTML) 3 Page - Texas Instruments

 
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Texas Instruments Incorporated
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GC3021A 3.3V MIXER AND CARRIER REMOVAL CHIP
SLWS137A
This document contains information which may be changed at any time without notice
GC3021A DATASHEET
1.1
BLOCK DIAGRAM
A block diagram illustrating the major functions of the chip is shown in Figure 1
Figure 1. GC3021A BLOCK DIAGRAM
INPUT
FORMAT
MIXER
OUTPUT
FORMAT
PHASE ERROR
LOOKUP RAM
4K BY 1 Memory
SNAPSHOT
RAM
NCO
CIRCUIT
PHASE
LOCK
LOOP
CIRCUIT
Complex data at 100 MHz
Real data at 200 MHz
DATA OUT
Quad 64 Word
Memory
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
12 Bits
1 Bit
32 Bits
DATA IN
Odd/Even Complex Pairs,
Complex Samples,
or I/Q Symbols
(70 MHz)
EIN
1 Bit
CIN
1 Bit
EOUT
SB
SA
SYNC
COUNTER
SO
A[0:8]
CS
9 Bits
16 Bits
RE, WE
C[0:15]
CONTROL
INTERFACE
Internal Controls
Internal
Syncs
CKENA
CK
CLOCK
GENERATOR
Internal
Clocks
CKENB
SN
I[0:11]
Q[0:11]
YA[0:11]
YB[0:11]
YC[0:11]
YD[0:11]
Carry In
sync
HSO
AND
DC REMOVAL
MIXER MODE
200 MSPS real input data
(even/odd data at 100MSPS)
100 MSPS complex input data
(TTL level inputs)
12 bit inputs and outputs
32 bit NCO phase control
NCO generates 12 bit sines and cosines
1.0
KEY FEATURES
CARRIER REMOVAL MODE
100 Million Complex Samples per second (CSPS)
input data
12 bit input and output data
12 bit by 12 bit complex multiplier
4K bit phase error lookup RAM
Phase error feedback loop for carrier and
phase offset removal
32 bit numerically controlled oscillator (NCO)
Snapshot memory for adaptive filtering
OVERALL
Microprocessor
interface
for
control,
output, and diagnostics
Built in diagnostics
500 mW power at 100 MHz, 3.3 volts
160 pin plastic quad flat pack package


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