AD6623 Datasheet, PDF (1/40 Pages) Analog Devices – 4-Channel, 104 MSPS Digital Transmit Signal Processor TSP

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4-Channel, 104 MSPS Digital
Transmit Signal Processor (TSP)
AD6623
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
p/4-DQPSK Differential Phase Encoder
3p/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
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
FUNCTIONAL BLOCK DIAGRAM
SDINA
SDFIA
SDFOA
SCLKA
SDINB
SDFIB
SDFOB
SCLKB
SDINC
SDFIC
SDFOC
SCLKC
SDIND
SDFID
SDFOD
SCLKD
NCO = NUMERICALLY CONTROLLED
OSCILLATOR/TUNER
SP_ORT
DATA
RAM
I
COEFFICIENT _Q
FILTER
SCALER ^I
AND Q
POWER
RAMP
I
CIC5
FILTER
Q
I
RCIC2
FILTER
Q
CHAN A
NCO
QIN
IN
[17–0]
SP_ORT
DATA
RAM
I
COEFFICIENT _Q
FILTER
SCALER ^I
AND Q
POWER
RAMP
I
CIC5
FILTER
Q
I
RCIC2
FILTER
Q
SP_ORT
DATA
RAM
I
COEFFICIENT Q
FILTER
SCALER ^I
AND Q
POWER
RAMP
I
CIC5
FILTER
Q
I
RCIC2
FILTER
Q
SP_ORT
DATA
RAM
I
COEFFICIENT _Q
FILTER
SCALER ^I
AND Q
POWER
RAMP
I
CIC5
FILTER
Q
I
RCIC2
FILTER
Q
CHAN B
NCO
SUMMATION
CHAN C
NCO
SYNC
4
CHAN D
NCO
OEN
QOUT
OUT
[17:0]
JTAG
MICROPORT
REV. 0
TDL TDO TMS TCK TRST
D[7:0] DS DTACK RW MODE A[2:0] CS
CLK RESET
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© Analog Devices, Inc., 2002