|
Details, datasheet, quote on part number:PDSP16350A0
| |
Datasheet text preview:
PDSP16350 PDSP16350
I/Q Splitter/NCO
DS3711
ISSUE 2.3
September 1996
The PDSP16350 provides an integrated solution to the need for very accurate, digitised, sine and cosine waveforms. Both these waveforms are produced simultaneously, with 16 bit amplitude accuracy, and are synthesised using a 34 bit phase accumulator. The more significant bits of this provide 16 bits of phase accuracy for the sine and cosine look up tables. With a 20 MHz system clock, waveforms up to 10 MHz can be produced, with 0.001 Hz resolution. If frequency modulation is required with no discontinuities, the phase increment value can be changed linearly on every clock cycle. Alternatively absolute phase jumps can be made to any phase value. The provision of two output multipliers allows the sine and cosine waveforms to be amplitude modulated with a 16 bit value present on the input port. This option can also be used to generate the in-phase and quadrature components from an incoming signal. This I/Q split function is required by systems which employ complex signal processing.
DIN
PHASE OFFSET REGISTER
PHASE INCR REGISTER
SCALING REGISTER
ACCUM
MUX
PHASE ACCUM REGISTER
CORDIC PROCESSOR ARRAY
FEATURES
s s s s s Direct Digital Synthesiser producing simultaneous sine and cosine values 16 bit phase and amplitude accuracy, giving spur levels down to - 90 dB Synthesised outputs from DC to 10 MHz with accuracies better than 0.001 Hz Amplitude and Phase modulation modes 84 pin PGA or 132 pin QFP
Fig. 1 Block Diagram
SIN
COS
APPLICATIONS
s s s s s s s Numerically controlled oscillator (NCO) Quadrature signal generator FM, PM, or AM signal modulator Sweep Oscillator High density signal constellation applications with simultaneous amplitude and phase modulation VHF reference for UHF generators Signal demodulator
ASSOCIATED PRODUCTS
PDSP16256/A PDSP16510A PDSP16488A Programmable FIR Filter FFT Processor 2D Convolver
1
PDSP16350
N
JUMP MODE DIN19 DIN21 DIN23 VDD DIN26 GND DIN28 DIN30 DIN32 VOUT RES
M
DIN17
DIN18
DIN20
DIN22
DIN24
DIN25
DIN27
DIN29
DIN31
DIN33
VIN
L
DIN15
DIN16
SIN15
SIN14
K
DIN13
DIN14
SIN13
SIN12
J
DIN11
DIN12
SIN11
SIN10
H
GND
DIN10
SIN9
GND
G
DIN9
DIN8
SIN8
SIN7
F
VDD
DIN7
SIN6
VDD
E
DIN6
DIN5
SIN4
SIN5
D
DIN4
DIN3
SIN2
SIN3
C
DIN2
DIN1
SIN0
SIN1
B
DIN0
COS15
COS13
COS11
COS9
COS7
COS6
COS4
COS2
COS0
CEN
A
CLOCK
GND
COS14
COS12
COS10
VDD
COS8
GND
COS5
COS3
COS1
OES
OEC
Fig. 2 A. Pin out - bottom view (84 pin PGA - AC84)
2
PDSP16350
GC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 SIG N/C CEN N/C SIN0 SIN1 SIN2 GND VDD SIN3 SIN4 N/C SIN5 SIN6 N/C SIN7 SIN8 VDD GND SIN9 N/C SIN10 SIN11 N/C SIN12 SIN13 SIN14 VDD GND SIN15 VIN N/C N/C RESET GC 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 SIG N/C VOUT DIN33 GND VDD DIN32 N/C DIN31 DIN30 N/C DIN29 DIN28 N/C DIN27 GND VDD DIN26 DIN25 DIN24 DIN23 VDD DIN22 GND DIN21 VDD DIN20 DIN19 GND VDD DIN18 MODE JUMP VDD GC 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 SIG GND DIN17 N/C DIN16 DIN15 GND VDD DIN14 DIN13 DIN12 N/C DIN11 DIN10 N/C DIN9 GND VDD DIN8 DIN7 DIN6 N/C DIN5 N/C DIN4 DIN3 VDD GND DIN2 DIN1 N/C DIN0 N/C CLK GC 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 SIG GND VDD GND N/C COS15 COS14 N/C COS13 COS12 N/C COS11 N/C COS10 COS9 VDD GND COS8 COS7 N/C COS6 COS5 N/C COS4 N/C COS3 COS2 N/C COS1 VDD GND COS0 OES OEC
Fig.2B Pin out (132 pin ceramic QFP - GC132)
3
|
|
