HFA3724IN Intersil Corporation, HFA3724IN Datasheet
HFA3724IN
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HFA3724IN Summary of contents
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... The device is housed in a thin 80 lead TQFP package well suited for PCMCIA board applications. Ordering Information TEMP. RANGE o PART NUMBER ( C) PACKAGE HFA3724IN - TQFP HFA3724IN96 - Tape and Reel Simplified Block Diagram LIM1_IN RSSI1 RSSI2 MOD_LO_IN MOD_LO_OUT LO_GND MOD_TX_IF_OUT 1 ...
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Pinout LIM1_BYP+ LIM1_IN+ LIM1_IN- LIM1_BYP- GND GND GND GND LPF_V CC 2V REF LPF_BYP LPF_TXI_IN LPF_TXQ_IN LPF_RXI_OUT LPF_RXQ_OUT LPF_SEL1 LPF_SEL0 LPF_TUNE1 LPF_TUNE0 GND 2 HFA3724 80 LEAD TQFP TOP VIEW ...
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Block Diagram LPF_SEL1 LPF_SEL0 LPF_TUNE0 LPF_TUNE1 LPF_RX PE LPF_RX I - LPF_RX I + LPF_RX Q + LPF_RX Q - MOD_RX Q - MOD_RX Q + MOD_RX I - MOD_RX I + MOD_RX PE MOD_IF_IN + MOD_IF_IN - LIM2_OUT - ...
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Typical Application Diagram HFA3424 (NOTE) (FILE# 4131) HFA3624 RF/IF CONVERTER (FILE# 4066) RFPA HFA3925 (FILE# 4132) HFA3524 TYPICAL TRANSCEIVER APPLICATION USING THE HFA3724 NOTE: Required for systems targeting 802.11 specifications. For additional information on the PRISM™ chip set, call (407) ...
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Typical Application Diagram V CC 0.1 75 TOYOCOM (NOTE 1) TQS 432 100p TOYOCOM TQS 432 TYPICAL APPLICATION DIAGRAM (TARGETING IEEE 802.11 STANDARD) NOTES: 1. Input termination used to match a SAW filter. 2. ...
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Pin Description PIN SYMBOL 1 LIM1_BYP+ DC feedback pin for Limiter amplifier 1. Requires good decoupling and minimum wire length to a solid signal ground. 2 LIM1_In+ Non inverting analog input of Limiter amplifi LIM1_In- Inverting input of ...
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Pin Description (Continued) PIN SYMBOL 33 Mod_RXI+ In phase demodulator positive output. AC coupling is required. Normally connects to the non inverting input of the Low pass filter (LPF_RXI+), pin 30. 34 Mod_RXI- In phase demodulator negative output. AC coupling ...
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Pin Description (Continued) PIN SYMBOL 63 LIM2_In- Inverting input of Limiter amplifi LIM2_BYP- DC feedback pin for Limiter amplifier 2. Requires good decoupling and minimum wire length to a solid signal ground. 65, 66, GND Ground. Connect to ...
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Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.0V Voltage on ...
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AC Electrical Specifications, Demodulator Performance PARAMETER IF Demodulator RSSI DC Level, Pin = -30dBm (Note 15) IF Demodulator RSSI DC Level, Pin = -70dBm (Note 15) IF Demodulator RSSI Linear Dynamic Range (Note 16) IF Demodulator RSSI Rise and Fall ...
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Typical Performance Curves, Demodulator 10mA/DIV 2.5 4 FIGURE 1. DEMODULATOR SUPPLY CURRENT vs V TEMPERATURE 40mV/DIV. 700 500 300 2.5 4 FIGURE 3. DEMOD I/Q OUTPUT SWING vs V TEMPERATURE o 0.2 /DIV. o ...
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Typical Performance Curves, Demodulator 0.4dB/DIV xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx EXPECTED VARIATION xxxxxxxxxxxxxxxxxxxxxx o 0 xxxxxxxxxxxxxxxxxxxxxx WINDOW vs TEMP xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx o -2 -60 -40 - TEMPERATURE FIGURE 7. DEMOD I/Q PHASE BALANCE ...
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Typical Performance Curves, Modulator 10mA/DIV. 90mA 10mA 2.5 4 FIGURE 12. MODULATOR SUPPLY CURRENT vs V TEMPERATURE 0.5dB/DIV 2.5 4 FIGURE 14. MODULATOR SSB OUTPUT POWER vs V TEMPERATURE 1dB/DIV. +5dB xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx ...
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Typical Performance Curves, Modulator 0dB -3dB 1MHz 2MHz FIGURE 18. TYPICAL MODULATOR I/Q 3dB CUTOFF FREQUENCY CURVES 2%/DIV. +10% 0% -10% -60 -40 - TEMPERATURE FIGURE 20. LPF CUTOFF FREQUENCY vs TEMPERATURE AND V (NOTE ...
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Test Diagram (280MHz IF 0.1 75 (NOTE 23 (NOTE 22) IF_IN 100p 0 47p 79 RSSI TABLE 2. POWER MANAGEMENT TRANSMIT RECEIVE LIM1_PE 0 LIM2_PE 0 LPF_RX_PE 0 ...
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Overall Device Description The HFA3724 is a highly integrated baseband converter for half duplex wireless data applications. It features all the necessary blocks for baseband modulation and demodulation of “I” and “Q” quadrature multiplexing signals. It targets applications using all ...
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IF gain components. The use of interstage bandpass filtering is suggested to decrease the noise bandwidth of the signal driving the second stage. Excessive broadband noise energy amplified by the first ...
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Quadrature Up Converter The Quadrature up converter mixers are also based on a doubly balanced Gilbert Cell design. “I” and “Q” Up converter signals are summed and buffered together through a single end open collector stage. As with the demodulators, ...
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V IH TXI LPF_TXI_IN COMPARATOR R1 12 4.3K 680 0.1 LPF_BYP 11 1.25V R2 COMPARATOR V IH 680 R1 13 TXQ LPF TXQ_IN 4. 1.25V FIGURE 26. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT DIGITAL INPUTS ...
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AC Electrical Specifications, IF Limiter, Single Stage Individual Performance PARAMETER IF Frequency Range (Min Limited by Bypass Capacitors) IF Voltage Gain IF Amp. Noise Figure at 250 Source Input Maximum IF Input, Single Ended IF Differential Limiting Output (1st Harmonic ...
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AC Electrical Specifications, I/Q Up Converter and LO Individual Performance PARAMETER 2XLO Input Frequency Range (2 X Input Range) 2XLO Input Current Range 2XLO Input Impedance Buffered LO Output Voltage, Single Ended Buffered LO Output Impedance Quadrature IF Modulator Output ...
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AC Electrical Specifications, RX/TX 5TH Order LPF Individual Performance PARAMETER TX/RX LPF 3dB Bandwidth, Sel0 = 0, Sel1 = 0 TX/RX LPF 3dB Bandwidth, Sel0 = 1, Sel1 = 0 TX/RX LPF 3dB Bandwidth, Sel0 = 0, Sel1 = 1 ...
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Low Nominal 20% High Typical Performance Curves, Individual Blocks 1dB/DIV. 5.5V 45dB 2.7V 40dB 10M 100M FIGURE 28. SINGLE STAGE LIMITER GAIN vs FREQUENCY AND TEMPERATURE HFA3724 TYPICAL f3dB vs R TUNE +20% -20% +5 +10 ...
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... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with- out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...