GC2011A Datasheet, PDF (3/50 Pages) Texas Instruments – 3.3V DIGITAL FILTER CHIP

GC2011A 3.3V DIGITAL FILTER CHIP
SLWS129A
1.0
1.1
1.2
1.3
KEY FEATURES ......................................................................................................................... 1
BLOCK DIAGRAM ................................................................................................................................1
GC2011A TO GC2011 COMPARISON................................................................................................. 2
DATASHEET OVERVIEW ....................................................................................................................3
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
FUNCTIONAL DESCRIPTION ................................................................................................... 4
TRANSVERSAL FILTERS ....................................................................................................................5
CONTROL INTERFACE ....................................................................................................................... 6
COUNTER AND SYNCHRONIZATION CIRCUIT................................................................................. 7
INPUT MUX ...........................................................................................................................................8
INPUT NEGATION ................................................................................................................................8
A/B FILTER PATHS ..............................................................................................................................8
FILTER CELL ........................................................................................................................................9
ACCUMULATOR .................................................................................................................................10
24 BIT MUX CIRCUIT .........................................................................................................................10
SUMMER ............................................................................................................................................10
OUTPUT NEGATION ..........................................................................................................................11
GAIN ....................................................................................................................................................11
OUTPUT MUX .....................................................................................................................................11
SNAPSHOT MEMORY .......................................................................................................................11
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
FILTERING MODES .................................................................................................................13
FULL RATE .........................................................................................................................................14
HALF RATE .........................................................................................................................................15
QUARTER RATE ................................................................................................................................16
DOUBLE RATE I/O .............................................................................................................................16
DECIMATION ......................................................................................................................................17
INTERPOLATION ...............................................................................................................................18
HILBERT TRANSFORM FILTERS ......................................................................................................19
REAL TO COMPLEX QUADRATURE DOWN CONVERT .................................................................20
COMPLEX TO REAL QUADRATURE UPCONVERT .........................................................................21
DIAGNOSTICS ....................................................................................................................................22
4.0
4.1
4.2
PACKAGING ............................................................................................................................23
160 PIN QUAD FLAT PACK (QFP) PACKAGE ..................................................................................23
160 PIN BALL GRID ARRAY (PBGA) PACKAGE................................................................................25
5.0
PIN DESCRIPTIONS ................................................................................................................27
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
CONTROL REGISTERS ...........................................................................................................28
A-PATH AND B-PATH CONTROL REGISTER 0 ................................................................................29
A-PATH AND B-PATH CONTROL REGISTER 1 ................................................................................31
CASCADE MODE CONTROL REGISTER .........................................................................................32
COUNTER REGISTER .......................................................................................................................32
GAIN REGISTER ................................................................................................................................32
OUTPUT MODE REGISTER ...............................................................................................................34
SNAPSHOT MODE CONTROL REGISTERS .....................................................................................35
SNAPSHOT START CONTROL REGISTER ......................................................................................36
ONE SHOT ADDRESS .......................................................................................................................36
NEW MODES REGISTER ..................................................................................................................37
7.0
7.1
7.2
7.3
7.4
7.5
SPECIFICATIONS ....................................................................................................................38
ABSOLUTE MAXIMUM RATINGS ......................................................................................................38
RECOMMENDED OPERATING CONDITIONS ..................................................................................38
THERMAL CHARACTERISTICS ........................................................................................................38
DC CHARACTERISTICS ....................................................................................................................39
AC CHARACTERISTICS ....................................................................................................................40
8.0
8.1
8.2
8.3
8.4
8.5
APPLICATION NOTES .............................................................................................................41
POWER AND GROUND CONNECTIONS ..........................................................................................41
STATIC SENSITIVE DEVICE .............................................................................................................41
100 MHZ OPERATION .......................................................................................................................41
REDUCED VOLTAGE OPERATION ...................................................................................................41
SYNCHRONIZING MULTIPLE GC2011A CHIPS ...............................................................................42
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