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ADC0831B Datasheet(PDF) 1 Page - Texas Instruments |
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ADC0831B Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page ADC0831A, ADC0832A, ADC0831B, ADC0832B A/D PERIPHERALS WITH SERIAL CONTROL SLAS006 – AUGUST 1985 – REVISED JUNE 1986 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 D 8-Bit Resolution D Easy Microprocessor interface or Stand-Alone Operation D Operates Ratiometrically or With 5-V Reference D Single Channel or Multiplexed Twin Channels With Single-Ended or Differential Input Options D Input Range 0 to 5 V With Single 5-V Supply D Inputs and Outputs Are Compatible With TTL and MOS D Conversion Time of 32 µs at CLK = 250 kHz D Designed to Be interchangeable With National Semiconductor ADC0831 and ADC0832 DEVICE TOTAL UNADJUSTED ERROR DEVICE A-SUFFIX B-SUFFIX ADC0831 ± 1 LSB ± 1/2 LSB ADC0832 ± 1 LSB ± 1/2 LSB description These devices are 8-bit successive-approximation analog-to-digital converters. The ADC0831A and ADC0831B have single input channels; the ADC0832A and ADC0832B have multiplexed twin input channels. The serial output is configured to interface with standard shift registers or microprocessors. Detailed information on interfacing to most popular microprocessors is readily available from the factory. The ADC0832 multiplexer is software configured for single-ended or differential inputs. The differential analog voltage input allows for common-mode rejection or offset of the analog zero input voltage value. In addition, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution. The operation of the ADC0831 and ADC0832 devices is very similar to the more complex ADC0834 and ADC0838 devices. Ratiometric conversion can be attained by setting the REF input equal to the maximum analog input signal value, which gives the highest possible conversion resolution. Typically, REF is set equal to VCC (done internally on the ADC0832). For more detail on the operation of the ADC0831 and ADC0832 devices, refer to the ADC0834/A DC0838 data sheet. The ADC0831AC, ADC0831BC, ADC0832AC, and ADC0832BC are characterized for operation from 0 °C to 70 °C. The ADC0831AI, ADC0831BI, ADC0832AI, and ADC0832BI are characterized for operation from –40 °C to 85°C. Copyright © 1996, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. 1 2 3 4 8 7 6 5 CS IN+ IN– GND VCC CLK DO REF ADC0831 . . . P PACKAGE (TOP VIEW) 1 2 3 4 8 7 6 5 CS CH0 CH1 GND VCC/REF CLK DO DI ADC0832 . . . P PACKAGE (TOP VIEW) |
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