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ACS411CS Datasheet(PDF) 40 Page - Semtech Corporation |
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ACS411CS Datasheet(HTML) 40 Page - Semtech Corporation |
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40 / 43 page  40 ACS411CS PRE-RELEASE Issue 6.0 July 1999. Pin Description ACS9020 part 3. Pin Description ACS9020 part 2. Pin Sym IO Name Description 49 TXP I Data transmit positive Positive output of TX data source. 50 TXN I Data transmit negative Negative output of TX data source. 51 TXFLAG O Transmit current monitor flag Used to drive external indicator LED. 52 TXMON - Transmit monitor current 10K Ω potentiometer to GND to adjust TXFLAG threshold . 53 IBUF - Current reference for SDATA and SCLK drivers 470 Ω resistor to VDD (or float if using external differential o/p loads . 54 SDATAN O Re-synchronis- ed negative data Re-synchronised negative data output (120 Ω to GND if IBUF floating). 55 SDATAP O Re-synchronis- ed positive data Re-synchronised positive data output (120 Ω to GND if IBUF floating). 56 SCLKN O PLL recovered clock negative PLL recovered clock negative (120 Ω to GND if IBUF floating). 57 SCLKP O PLL recovered clock positive PLL recovered clock positive (120 Ω to GND if IBUF floating). 58 GND1 - Ground Power supply. 59 VDD - Power supply Power supply, 4.75 - 5.25 Volts. 60 TXEN O Logic transmit window enable Connect to ENTX if using internal packet data generator. 61 ENTX I Enable transmit Set Logic High or Low or to TXEN. 62 TXSEL I Select packet transmit Set Logic High or Low. 63 QUIETRX I Quiet reception Set Logic High or Low. 64 MONRX I Monitor PIN receive select Set Logic High or Low. Pin Sym IO Name Description 26 RXVDD2 - Pre-amp power supply Power supply, 4.75 - 5.25 Volts. 27 COFFP - Post amp offset capacitor 1nF to COFFN. 28 COFFN - Post amp offset capacitor 1nF to COFFP. 29 CAGC - Preamp AGC capacitor 10nF to GND. 30 COFFSET - Preamp offset capacitor 10nF to GND. 31 RSET - Receiver current bias resistor 10nF to GND. 32 VREF - Bandgap reference 10nF to GND. 33 VN - Postamp negative input Negative output from external TIA. 34 VP - Postamp positive input Positive output from external TIA. 35 PINN - Receiver PIN cathode Laser/LED PIN cathode. 36 PINP - Receiver PIN anode Laser/LED PIN anode. 37 PMN - Monitor PIN anode Laser monitor PIN anode. 38 MONN - Monitor PIN cathode Laser monitor PIN cathode. 39 TXVDD - Power Supply Power supply, 4.75 - 5.25 Volts. 40 41 LAP LAN - Anode Cathode Laser/LED anode. Laser/LED cathode. 42 TXGND - Ground Power supply. 43 CTXMOD - Laser/LED modulation Laser/LED modulation current set smoothing capacitor 10nF to GND. 44 CTXBIAS - Laser/LED bias Laser/LED bias current set smoothing capacitor 10nF to GND. 45 RMODSET - Laser/LED modulation Laser/LED modulation current set resistor 50K Ω potentiometer to GND. 46 RBIASSET - Laser/LED bias Laser/LED bias current set resistor 50K Ω potentiometer to GND. 47 BIASFIX I Laser/LED bias fix Set Logic High or Low. 48 MODFIX I Laser/LED modulation current fix Set Logic High or Low. |
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