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SP9504JS Datasheet(PDF) 4 Page - Sipex Corporation |
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SP9504JS Datasheet(HTML) 4 Page - Sipex Corporation |
4 / 11 page SP9504DS/03 SP9504 Quad, 12-Bit, Voltage Output D/A Converter © Copyright 2000 Sipex Corporation 4 PINOUT — 28–PIN PLASTIC DIP & SOIC VOUT4 VSS VDD CLR REF IN GND B1/B2 A0 A1 XFER WR2 WR1 CS VOUT1 VOUT3 DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 VOUT2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SP9504 PIN ASSIGNMENTS Pin 1 — V OUT 4 — Voltage Output from DAC4. Pin 2 — V SS — –5V Power Supply Input. Pin 3 — V DD — +5V Power Supply Input. Pin 4 — CLR — Clear. Gated with WR2 (pin 11). Active low. Clears all DAC outputs to 0V. Pin 5 — REF IN — Reference Input for DACs. Pin 6 — GND — Ground. Pin 7 — B1/B2 — Byte 1/Byte 2 — Selects Data Input Format. A logic “1” on pin 7 selects the 12–bit mode, and all 12 data bits are pre- sented to the DAC(s) unchanged; a logic “0” selects the 8–bit mode, and the four LSBs are connected to the four MSBs, allowing an 8–bit MSB–justified interface. Pins 8 and 9 — A 0 & A1 — Address for DAC Selection. A 1/A0 = 0/0 = DAC1; 0/1 = DAC2; 1/ 0 = DAC3; 1/1 = DAC4. Pin 10 — XFER — Transfer. Gated with WR2 (pin 11); loads all DAC registers simultaneously. Active low. Pin 11 — WR2 — Write Input 2 — In conjunc- tion with XFER (pin 10), controls the transfer of data from the input registers to the DAC regis- ters. In conjunction with CLR (pin 4), the DAC registers are forced to 1000 0000 0000 and the DAC outputs will settle to 0V. Active low. Pin 12 — WR1 — Write Input1 — In conjunc- tion with CS (pin 13), enables input register selection, and controls the transfer of data from the input bus to the input registers. Active low. Pin 13 — CS — Chip Select — Enables writing data to input registers and/or transferring data from input bus to DAC registers. Active low. Pin 14 — V OUT1 — Voltage Output from DAC1. Pin 15 — V OUT2 — Voltage Output from DAC2. Pin 16 — DB 11 — Data Bit 11; Most Significant Bit. Pin 17 — DB 10 — Data Bit 10. Pin 18 — DB 9 — Data Bit 9. Pin 19 — DB 8 — Data Bit 8. Pin 20 — DB 7 — Data Bit 7. Pin 21 — DB 6 — Data Bit 6. Pin 22 — DB 5 — Data Bit 5. Pin 23 — DB 4 — Data Bit 4. Pin 24 — DB 3 — Data Bit 3. Pin 25 — DB 2 — Data Bit 2. Pin 26 — DB 1 — Data Bit 1. Pin 27 — DB 0 — Data Bit 0; LSB Pin 28 — V OUT3 — Voltage Output from DAC3. |
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