REV. A
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a
AD6623
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Analog Devices, Inc., 2002
4-Channel, 104 MSPS Digital
Transmit Signal Processor (TSP)
FUNCTIONAL BLOCK DIAGRAM
SPORT
RAM
COEFFICIENT
FILTER
DATA
SCALER
AND
POWER
RAMP
CIC5
FILTER
rCIC2
FILTER
NCO
I
Q
CHAN A
I
Q
I
Q
I
Q
JTAG
CS
A[2:0]
MODE
RW
DTACK
DS
D[7:0]
IN
QIN
SYNC
OEN
QOUT
OUT
[17:0]
SDINA
SDFIA
SDFOA
SCLKA
SDINB
SDFIB
SDFOB
SCLKB
SDINC
SDFIC
SDFOC
SCLKC
SDIND
SDFID
SCLKD
SDFOD
SUMMATION
SCALER
AND
POWER
RAMP
CIC5
FILTER
rCIC2
FILTER
NCO
I
Q
CHAN B
I
Q
I
Q
I
Q
SCALER
AND
POWER
RAMP
CIC5
FILTER
rCIC2
FILTER
NCO
I
Q
CHAN C
I
Q
I
Q
I
Q
SCALER
AND
POWER
RAMP
CIC5
FILTER
rCIC2
FILTER
NCO
I
Q
CHAN D
I
Q
I
Q
I
Q
MICROPORT
CLK
RESET
4
[17–0]
SPORT
RAM
COEFFICIENT
FILTER
DATA
SPORT
RAM
COEFFICIENT
FILTER
DATA
SPORT
RAM
COEFFICIENT
FILTER
DATA
NCO = NUMERICALLY CONTROLLED
OSCILLATOR/TUNER
TDL
TMS TCK
TRST
TDO
FEATURES
Pin Compatible to the AD6622
18-Bit Parallel Digital IF Output
Real or Interleaved Complex
18-Bit Bidirectional Parallel Digital IF Input/Output
Allows Cascade of Chips for Additional Channels
Clipped or Wrapped Over Range
Two’s Complement or Offset Binary Output
Four Independent Digital Transmitters in Single Package
RAM Coefficient Filter (RCF)
Programmable IF and Modulation for Each Channel
Programmable Interpolating RAM Coefficient Filter
/4-DQPSK Differential Phase Encoder
3 /8-PSK Linear Encoder
8-PSK Linear Encoder
Programmable GMSK Look-Up Table
Programmable QPSK Look-Up Table
All-Pass Phase Equalizer
Programmable Fine Scaler
Programmable Power Ramp Unit
High Speed CIC Interpolating Filter
Digital Resampling for Noninteger Interpolation Rates
NCO Frequency Translation
Carrier Output from DC to 52 MHz
Spurious Performance Better than –100 dBc
Separate 3-Wire Serial Data Input for Each Channel
Bidirectional Serial Clocks and Frames
Microprocessor Control
2.5 V CMOS Core, 3.3 V Outputs, 5 V Inputs
JTAG Boundary Scan
APPLICATIONS
Cellular/PCS Base Stations
Micro/Pico Cell Base Stations
Wireless Local Loop Base Stations
Multicarrier, Multimode Digital Transmit
GSM, EDGE, IS136, PHS, IS95, TDS CDMA, UMTS,
CDMA2000
Phased Array Beam Forming Antennas
Software Defined Radio
Tuning Resolution Better than 0.025 Hz
Real or Complex Outputs