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MAX1228 Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX1228 Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 24 page 12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference _______________________________________________________________________________________ 9 Detailed Description The MAX1226/MAX1228/MAX1230 are low-power, seri- al-output, multichannel ADCs with temperature-sensing capability for temperature-control, process-control, and monitoring applications. These 12-bit ADCs have inter- nal track and hold (T/H) circuitry that supports single- ended and fully differential inputs. Data is converted from an internal temperature sensor or analog voltage sources in a variety of channel and data-acquisition configurations. Microprocessor (µP) control is made easy through a 3-wire SPI/QSPI/MICROWIRE-compati- ble serial interface. Figure 2 shows a simplified functional diagram of the MAX1226/MAX1228/MAX1230 internal architecture. The MAX1226 has eight single-ended analog input channels or four differential channels. The MAX1228 has 12 single-ended analog input channels or six differ- ential channels. The MAX1230 has 16 single-ended analog input channels or eight differential channels. 12-BIT SAR ADC CONTROL SERIAL INTERFACE OSCILLATOR FIFO AND ACCUMULATOR T/H TEMP SENSE REF- CNVST SCLK CS DIN EOC DOUT AIN15 AIN1 AIN2 INTERNAL REFERENCE REF+ MAX1226 MAX1228 MAX1230 Figure 2. Functional Diagram SCLK DIN DOUT CS tDH tDOE tDS tCH tCSS tCP tCSH tCSH tCSS tDOD tDOT Figure 1. Detailed Serial-Interface Timing Diagram |
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