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DAC1231 Dataheets PDF



Part Number DAC1231
Manufacturers National Semiconductor
Logo National Semiconductor
Description Double-Buffered D/A Converters
Datasheet DAC1231 DatasheetDAC1231 Datasheet (PDF)

MICRO-DAC DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP Compatible Double-Buffered D to A Converters February 1995 MICRO-DAC TM DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP Compatible Double-Buffered D to A Converters General Description The DAC1208 and the DAC1230 series are 12-bit multiplying D to A converters designed to interface directly with a wide variety of microprocessors (8080 8048 8085 Z-80 etc ) Double buffering input registers and associated control lines .

  DAC1231   DAC1231


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MICRO-DAC DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP Compatible Double-Buffered D to A Converters February 1995 MICRO-DAC TM DAC1208 DAC1209 DAC1210 DAC1230 DAC1231 DAC1232 12-Bit mP Compatible Double-Buffered D to A Converters General Description The DAC1208 and the DAC1230 series are 12-bit multiplying D to A converters designed to interface directly with a wide variety of microprocessors (8080 8048 8085 Z-80 etc ) Double buffering input registers and associated control lines allow these DACs to appear as a two-byte ‘‘stack’’ in the system’s memory or I O space with no additional interfacing logic required The DAC1208 series provides all 12 input lines to allow single buffering for maximum throughput when used with 16-bit processors These input lines can also be externally configured to permit an 8-bit data interface The DAC1230 series can be used with an 8-bit data bus directly as it internally formulates the 12-bit DAC data from its 8 input lines All of these DACs accept left-justified data from the processor The analog section is a precision silicon-chromium (Si-Cr) R-2R ladder network and twelve CMOS current switches An inverted R-2R ladder structure is used with the binary weighted currents switched between the IOUT1 and IOUT2 maintaining a constant current in each ladder leg independent of the switch state Special circuitry provides TTL logic input voltage level compatibility The DAC1208 series and DAC1230 series are the 12-bit members of a family of microprocessor compatible DACs (MICRO-DACsTM ) For applications requiring other resolutions the DAC1000 series for 10-bit and DAC0830 series for 8-bit are available alternatives Features Y Y Y Y Y Y Y Y Linearity specified with zero and full-scale adjust only Direct interface to all popular microprocessors Double-buffered single-buffered or flow through digital data inputs Logic inputs which meet TTL voltage level specs (1 4V logic threshold) Works with g 10V reference full 4-quadrant multiplication Operates stand-alone (without mP) if desired All parts guaranteed 12-bit monotonic DAC1230 series is pin compatible with the DAC0830 series 8-bit MICRO-DACs Key Specifications Y Y Y Y Y Y Current Settling Time Resolution Linearity (Guaranteed over temperature) Gain Tempco Low Power Dissipation Single Power Supply 1 ms 12 Bits 10 11 or 12 Bits of FS 1 3 ppm C 20 mW 5 VDC to 15 VDC Typical Application TL H 5690 – 1 TRI-STATE is a registered trademark of National Semiconductor Corp MICRO-DACTM is a trademark of National Semiconductor Corp C1995 National Semiconductor Corporation TL H 5690 RRD-B30M115 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications (Notes 1 and 2) Supply Voltage (VCC) 17 VDC Voltage at Any Digital Input Voltage at VREF Input Storage Temperature Range Package Dissipation at TA e 25 C (Note 3) DC Voltage Applied to IOUT1 or IOUT2 (Note 4) ESD Susceptability VCC to GND g 25V b 65 C to a 150 C 500 mW Operating Conditions Lead Temperature (Soldering 10 sec ) 300 C Temperature Range TMIN s TA s TMAX DAC1208LCJ DAC1209LCJ DAC1210LCJ DAC1230LCJ DAC1231LCJ DAC1232LCJ b 40 C s TA s a 85 C DAC1231LIN DAC1232LIN DAC1208LCJ-1 DAC1210LCJ-1 DAC1230LCJ-1 DAC1231LCJ-1 DAC1232LCJ-1 DAC1231LCN DAC1232LCN DAC1231LCWM DAC1232LCWM 0 C s TA s a 70 C Range of VCC 4 75 VDC to 16 VDC VCC to GND Voltage at Any Digital Input b 100 mV to VCC 800V Electrical Characteristics VREF e 10 000 VDC VCC e 11 4 VDC to 15 75 VDC unless otherwise noted Boldface limits apply from TMIN to TMAX (see Note 13) all other limits TA e TJ e 25 C Parameter Resolution Linearity Error (End Point Linearity) Zero and Full-Scale Adjusted DAC1208 DAC1230 DAC1209 DAC1231 DAC1210 DAC1232 Zero and Full-Scale Adjusted DAC1208 DAC1230 DAC1209 DAC1231 DAC1210 DAC1232 Using Internal RFb Vref e g 10V g 1V 4 7 13 g 0 018 g 0 024 g 0 050 g 0 018 g 0 024 g 0 05 Conditions Notes Typ (Note 10) 12 Tested Limit (Note 5) 12 Design Limit (Note 6) 12 Units Bits % of FSR % of FSR % of FSR Differential Non-Linearity 4 7 13 g 0 018 g 0 024 g 0 050 g 0 018 g 0 024 g 0 05 % of FSR % of FSR % of FSR Bits % of FSR % of FSR Monotonicity Gain Error (Min) Gain Error (Max) Gain Error Tempco Power Supply Rejection Reference Input Resistance (Min) Reference Input Resistance (Max) Output Feedthrough Error VREF e 20 Vp-p f e 100 kHz All Data Inputs Latched Low Output Capacitance All Data Inputs IOUT1 Latched High IOUT2 All Data Inputs IOUT1 Latched Low IOUT2 All Digital Inputs Latched High 4 7 7 7 7 13 9 12 b0 1 b0 1 g1 3 g3 0 12 00 b0 2 12 g6 0 g 30 ppm of FS C ppm of FSR V 15 15 30 10 20 10 20 kX mVp-p 200 70 70 200 13 20 01 01 15 15 08 22 b 200 pF pF pF pF mA nA nA VDC VDC mADC mADC Supply Current Drain Output Leakage Current IOUT1 IOUT2 Digital Input Threshold Digital Input Currents All Data Inputs Latched Low All Data Inp.


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