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ISL26134 Datasheet(PDF) 4 Page - Intersil Corporation |
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ISL26134 Datasheet(HTML) 4 Page - Intersil Corporation |
4 / 23 page ISL26132, ISL26134 4 FN6954.1 September 9, 2011 Circuit Description The ISL26132 (2-channel) and ISL26134 (4-channel) devices are very low noise 24-bit delta-sigma ADCs that include a programmable gain amplifier and an input multiplexer. The ISL26132 offers an on-chip temperature measurement capability. The ISL26132, ISL26134 provide pin compatibility and output data compatibility with the ADS1232/ADS1234, and offer the same conversion rates of 10Sps and 80Sps. All the features of the ISL26132, ISL26134 are pin-controllable, while offset calibration, standby mode, and output conversion data are accessible through a simple 2-wire interface. The clock can be selected to come from an internal oscillator, an external clock signal, or crystal (4.9152MHz typical). SPEED 21 25 Digital Input PDWN 22 26 Digital Input Power-Down: Holding this pin low powers down the entire converter and resets the ADC. SCLK 23 27 Digital Input Serial Clock: Clock out data on the rising edge. Also used to initiate Offset Calibration and Sleep modes. See “Serial Clock Input (SCLK)” on page 14 for more details. SDO/RDY 24 28 Digital Output Dual-Purpose Output: Data Ready: Indicate valid data by going low. Data Output: Outputs data, MSB first, on the first rising edge of SCLK. Pin Descriptions (Continued) NAME PIN NUMBER ANALOG/DIGITAL INPUT/OUTPUT DESCRIPTION ISL26132 ISL26134 TABLE 4. DATA RATE SELECT SPEED DATA RATE 010Sps 1 80Sps |
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