SA7025DK Philips Semiconductors, SA7025DK Datasheet
SA7025DK
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SA7025DK Summary of contents
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SA7025 Low-voltage 1GHz fractional-N synthesizer Product specification IC17 Data Handbook INTEGRATED CIRCUITS 1996 Aug 6 ...
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... REF AUX TEMPERATURE RANGE –40 to +85 C PARAMETER , V CCP 2 Product specification SA7025 DK Package TEST 19 LOCK DDA 7 14 PHP 8 PHI SSA 10 PHA IN 11 SR00600 Figure 1. Pin Configuration ORDER CODE DWG # SA7025DK SOT266-1 RATING UNITS -0.3 to +6 -65 to +150 C -40 to +85 C 853-1786 17157 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer PIN DESCRIPTIONS Symbol Pin CLOCK 1 Serial clock input DATA 2 Serial data input STROBE 3 Serial strobe input V 4 Digital ground Prescaler positive input IN 6 Prescaler negative input Prescaler positive supply voltage. This pin supplies power to the prescaler and RF input buffer ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer BLOCK DIAGRAM CLOCK DATA STROBE 64/65/72 PRESCALER RF IN TEST NR V CCP EM+EA 12 REFERENCE DIVIDER REF 1/4 AUX IN PRESCALER 1996 Aug 6 SERIAL INPUT + PROGRAM LATCHES NM2 PR NM1 NM3 FMOD FRACTIONAL MAIN DIVIDERS ACCUMULATOR FRD EM MAIN 2 PHASE ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer DC ELECTRICAL CHARACTERISTICS 3V unless otherwise specified. DD DDA CCP A SYMBOL SYMBOL PARAMETER PARAMETER V Recommended operating conditions SUPPLY I Total standby supply currents STANDBY Operational supply currents CCP I Operational supply currents AUX I Operational supply currents MAIN I Operational supply currents ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer DC ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER SYMBOL PARAMETER Fractional compensation PHP, speed up mode Fractional compensation output current I I PHP_F_S S 3 PHP Pump leakage Fractional compensation PHI, speed up mode Fractional compensation output current PHI_F PHI Charge pump leakage currents, charge pump not active Output leakage current PHP ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer AC ELECTRICAL CHARACTERISTICS (continued) SYMBOL PARAMETER SYMBOL PARAMETER t t Pulse width STROBE Pulse width; STROBE SW SW NOTES: 1. When a serial input “A” word is programmed, the main charge pumps on PHP and PHI are in the “speed up mode” as long as STROBE = H. ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer CURRENT CLOCK DATA STROBE 10K 22nF 22nF 22nF V CCP 22nF REF IN 50 150k 22nF AUX IN 50 1996 Aug Figure 3. Relative Output Current Variation CLOCK DATA TEST 2 19 STROBE LOCK SA7025 DDA PHP CCP PHI 8 REF ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer AC TIMING CHARACTERISTICS DATA 50% CLOCK FIRST CLOCK STROBE 50% CLOCK STROBE ( WORDS FUNCTIONAL DESCRIPTION Serial Input Programming The serial input is a 3-wire input (CLOCK, STROBE, DATA) to program all counter ratios, DACs, selection and enable bits. The programming data is structured into bit words; each word includes address bits ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer phase detector input. The 2 bit SA register determines the selection of the auxiliary phase detector signal. Main Divider The differential inputs are amplified (to internal ECL logic levels) and provide excellent sensitivity (–20dBm at 1GHz) making the prescaler ideally suited to directly interface to a VCO as integrated on the SA620 RF gain stage, VCO and mixer device ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer MSB WORD D31 LAST D23 D23 ADDRESS BITS Current Settings The SA7025 has 3 current setting pins: RA, RN and RF. The active charge pump currents and the fractional compensation currents are linearly dependent on the current connected between the current setting pin and V ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer Table 1. Function Table Symbol Bits NM1 12 Number of main divider cycles when prescaler modulus = “01” Number of main divider cycles when prescaler modulus = 65 NM2 “10” NM3 “10” Number of main divider cycles when prescaler modulus = 72 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer Table 3. PR Modulus PR Modulus Prescaler Bit Capacity NM1 When the serial input A word is loaded, the output circuits are in the “speed-up mode” as long as the STROBE is H, else the “normal mode” is active. In the “normal mode” the current output PHP is: ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer REFERENCE R MAIN N VCO CYCLES N DETECTOR OUTPUT CONTENTS ACCUM. FRACTIONAL COMPENSATION CURRENT PULSE-WIDTH MODULATION OUTPUT ON PHP, PHI PULSE-LEVEL MODULATION Lock Detect The output LOCK is H when the auxiliary phase detector AND the main phase detector indicates a lock condition. The lock condition is defined as a phase difference of less than +1 cycle on the reference input REF_IN ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer Test Pin The Test pin, Pin 19 buffered logic input which is exclusively ORed with the output of the prescaler. The output of the XOR gate is the input to the MAIN divider. The Test pin must be connected to V during normal operation as a synthesizer. This pin can be used input for verifying the divide ratio of the MAIN divider ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer TYPICAL PERFORMANCE CHARACTERISTICS CCP DDA Note5 2.7 3.5 4.5 SUPPLY VOLTAGE (V) Figure 12. Operational Supply Current vs Supply Voltage and Temperature CCP DDA DD EA=0, EM=1, Note5 2.7 3.5 4.5 SUPPLY VOLTAGE (V) Figure 13. Auxiliary Operational Supply Current vs Supply ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer TYPICAL PERFORMANCE CHARACTERISTICS (continued) 0 –5 –10 –15 –20 –25 N=100 – FREQUENCY (MHz) Figure 18. Reference Divider Minimum Input Power vs frequency and Supply 0 V –5 T =amb, A PA=1, N=100 –10 –15 –20 –25 – 110 FREQUENCY (MHz) Figure 19 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer j0.5 0 –j0.5 1996 Aug 300 600 900 1100 –j2 –j1 Figure 24. Typical RF Input Impedance IN 18 Product specification SA7025 CCP 2nH 3000 0.1pF 0.85pF Equivalent Input Impedance SR00620 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer Figure 25. SA7025DK Demoboard Layout (NOT ACTUAL SIZE) 1996 Aug 6 TOP SILK SCREEN TOP VIEW BOTTOM VIEW 19 Product specification SA7025 SR00621 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer 1996 Aug 6 Figure 26. SA7025DK Application Circuit 20 Product specification SA7025 SR00622 ...
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... Philips Semiconductors 1GHz low-voltage Fractional-N synthesizer SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm 1996 Aug 6 21 Product specification SA7025 SOT266-1 ...
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... Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. ...