tra cứu IC họ ADC ADC12H030/ADC12H032/ADC12H034/ADC12H038, ADC12030/ADC12032/ADC12034/ADC12038 Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold General Description The ADC12030, and ADC12H030 families are 12-bit plus sign successive approximation A/D converters with serial I/O and configurable input multiplexers. The ADC12032/ ADC12H032, ADC12034/ADC12H034 and ADC12038/ ADC12H038 have 2, 4 and 8 channel multiplexers, respec- tively. The differential multiplexer outputs and A/D inputs are available on the MUXOUT1, MUXOUT2, A/DIN1 and A/DIN2 pins. The ADC12030/ADC12H030 has a two channel multi- plexer with the multiplexer outputs and A/D inputs internally connected. The ADC12030 family is tested witha5MHz clock, while the ADC12H030 family is tested with an 8 MHz clock. On request, these A/Ds go through a self calibration process that adjusts linearity, zero and full-scale errors to less than ±1 LSB each. The analog inputs can be configured to operate in various combinations of single-ended, differential, or pseudo-differential modes. A fully differential unipolar analog input range (0V to +5V) can be accommodated with a single +5V supply. In the differential modes, valid outputs are ob- tained even when the negative inputs are greater than the positive because of the 12-bit plus sign output data format. The serial I/O is configured to comply with the NSC MICROWIRE™. For complementary voltage refer- ences see the LM4040, LM4041 or LM9140. Applications n Medical instruments n Process control systems n Test equipment Features n Serial I/O (MICROWIRE Compatible) n 2, 4, or 8 channel differential or single-ended multiplexer n Analog input sample/hold function n Power down mode n Variable resolution and conversion rate n Programmable acquisition time n Variable digital output word length and format n No zero or full scale adjustment required n Fully tested and guaranteed with a 4.096V reference n 0V to 5V analog input range with single 5V power supply n No Missing Codes over temperature Key Specifications n Resolution: 12-bit plus sign n 12-bit plus sign conversion time — ADC12H030 family: 5.5 µs (max) — ADC12030 family: 8.8 µs (max) n 12-bit plus sign throughput time — ADC12H030 family: 8.6 µs (max) — ADC12030 family: 14 µs (max) n Integral linearity error: ±1 LSB (max) n Single supply: 5V ±10% n Power dissipation: 33 mW (max) — Power down: 100 µW (typ) Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Positive Supply Voltage (V+ = VA+ = VD+) 6.5V Voltage at Inputs and Outputs except CH0–CH7 and COM ư0.3V to V+ +0.3V Voltage at Analog Inputs CH0–CH7 and COM GND ư5V to V+ +5V |VA+ưVD+| 300 mV Input Current at Any Pin (Note 3) ±30 mA Package Input Current (Note 3) ±120 mA Package Dissipation at TA = 25˚C (Note 4) 500 mW ESD Susceptability (Note 5) Human Body Model 1500V Soldering Information N Packages (10 seconds) 260˚C SO Package (Note 6) : Vapor Phase (60 seconds) 215˚C Infrared (15 seconds) 220˚C Storage Temperature ư65˚C to +150˚C Operating Ratings (Notes 1, 2) Operating Temperature Range TMIN ≤ TA ≤ TMAX ADC12030CIN, ADC12030CIWM, ADC12H030CIN, ADC12H030CIWM, ADC12032CIN, ADC12032CIWM, ADC12H032CIN, ADC12H032CIWM, ADC12034CIN, ADC12034CIWM, ADC12H034CIN, ADC12H034CIWM, ADC12038CIN, ADC12038CIWM, ADC12H038CIN, ADC12H038CIWM ư40˚C ≤ TA ≤ +85˚C Supply Voltage (V+ = VA+ = VD+) +4.5V to +5.5V |VA+ưVD+| ≤ 100 mV VREF+ 0VtoVA+ VREFư 0VtoVREF+ VREF (VREF+ưVREFư) 1V to VA+ VREF Common Mode Voltage Range 0.1 VA+ to 0.6 VA+ A/DIN1, A/DIN2, MUXOUT1 and MUXOUT2 Voltage Range 0V to VA+ A/D IN Common Mode Voltage Range 0V to VA+ ADC