AD7008AP20 Analog Devices Inc, AD7008AP20 Datasheet
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AD7008AP20
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AD7008AP20 Summary of contents
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FEATURES Single +5 V Supply 32-Bit Phase Accumulator On-Chip COSINE and SINE Look-Up Tables On-Chip 10-Bit DAC Frequency, Phase and Amplitude Modulation Parallel and Serial Loading Software and Hardware Power Down Options 20 MHz and 50 MHz Speed Grades ...
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... MHz, Frequency Word = 5671C71C HEX, f CLK 4 V may be externally driven between 0 and V REF not allow reference current to cause power dissipation beyond the limit of I Specifications subject to change without notice 5 IOUT and IOUT, unless otherwise noted) AD7008AP20 Min Typ Max Min –55 –53 –70 –70 – ...
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... TIMING CHARACTERISTICS AD7008AP20 Parameter Min Typ Max NOTE 1 May be reduced LOAD is synchronized to CLOCK and Setup ( CLOCK t 4 FSEL, LOAD, VALID TC3–TC0 t 5 Figure 1. Clock Synchronization Timing t 7 LOAD t 8 TC0–TC3 VALID Figure 2. Register Transfer Timing REV 5 unless otherwise noted) ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ORDERING GUIDE Temperature Package Model Range Description AD7008AP20 – +85 C 44-Pin PLCC P-44A AD7008JP50 +70 C 44-Pin PLCC P-44A AD7008/PCB* 1–3.5" Disk *AD7008/PCB DDS Evaluation Kit, assembled and tested. Kit includes an AD7008JP50 ...
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Mnemonic Function POWER SUPPLY V Positive power supply for the analog section. A 0.1 F decoupling capacitor should be connected between V AA AGND. This AGND Analog Ground. V Positive power supply for the digital section. A ...
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AD7008 14 PIPELINE DELAYS ACCUMULATOR 32 AD7008 REGISTER AND 12 CONTROL LOGIC 20 ACCUM RESET SLEEP AM ENABLE Figure 7. AD7008 CMOS DDS Modulator (See Table I) SLEEP (37) SCLK (41 SDATA (42) 32-BIT SERIAL ASSEMBLY ...
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Table I. Latency Table Latency Function (Synchronizer Enabled CR3 = 0 FSelect 14t 1 Phase 13t 1 IQ Mod 11t 1 NOTE 1 All latencies are reduced by 4t when CR3 = 1 (synchronizer disabled equal to one ...
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AD7008 CIRCUIT DESCRIPTION The AD7008 provides an exciting new level of integration for the RF/Communications system designer. The AD7008 com- bines the numerically controlled oscillator (NCO), SINE/CO- SINE look-up tables, frequency, phase and IQ modulators, and a digital-to-analog converter on ...
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When amplitude modulation is not required, the IQ multipliers can be bypassed (CR = 2). The sine output is directly sent to the 10-bit DAC. Digital-to-Analog Converter The AD7008 includes a high impedance current source 10-bit DAC, capable of driving ...
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AD7008 Parallel Configuration The AD7008 functions fully in the parallel mode. There are two parallel modes of operation. Both are similar but are tai- lored for different bus widths, 8 and 16 bits. All modes of op- eration can be ...
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AD607 Monoceiver(tm). This unique two chip combination provides a complete receiver sub- system with digital frequency control, RSSI and demodulated outputs for AM, FM and complex I/Q (SSB or QAM). (See Figure 13.) Direct Digital ...
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AD7008–Typical Performance Characteristics +5V V COMP REF 6 5 115 TO DAC TYP V REF AD7008 4 R SET Figure 17. Equivalent Reference Circuit REF 4.3 dBm OFFSET 3 330 000 dB/DIV RANGE 5.0 dBm START 0 Hz ...
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REF 5.0 dBm 10 dB/DIV RANGE 5.0 dBm START 0 Hz RBW 3 kHz VBW 10 kHz Figure 23 MHz, f CLK OUT REF 4.3 dBm 10 dB/DIV RANGE 5.0 dBm CENTER 6 500 000.0 Hz RBW ...
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AD7008–Typical Performance Characteristics REF 5.0 dBm OFFSET 4 500 000 dB/DIV RANGE 5.0 dBm START 0 Hz RBW 3 kHz VBW 10 kHz Figure 29 MHz, f CLK OUT REF 5.0 dBm OFFSET 11 100 ...
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AD7008/PCB DDS EVALUATION BOARD The AD7008/PCB DDS Evaluation Board allows designers to evaluate the high performance AD7008 DDS Modulator with a minimum amount of effort. To prove this DDS will meet the user’s waveform synthesis re- quirements, the only things ...
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AD7008 Controlling the AD7008/PCB The AD7008/PCB is designed to allow control (frequency specification, reset, etc.) through the parallel printer port of a standard IBM-compatible PC. The user simply disconnects the printer cable from the printer and inserts it into edge ...