LTC2309 - 8-Channel, 12-Bit SAR ADC with I2C Interface

Linear Technologies

LTC2309 - 8-Channel, 12-Bit SAR ADC with I2C Interface RSS Sample
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Linear Technology
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The LTC2309 is a low noise, low power, 8-channel, 12-bit successive approximation ADC with an I2C compatible serial interface. This ADC includes an internal reference and a fully differential sample-and-hold circuit to reduce common mode noise. The LTC2309 operates from an internal clock to achieve a fast 1.3μs conversion time.

The LTC2309 operates from a single 5V supply and draws just 300μA at a throughput rate of 1ksps. The ADC enters nap mode when not converting, reducing the power dissipation.

The LTC2309 is available in both a small 24-pin 4mm × 4mm QFN and a 20-pin TSSOP package. The internal 2.5V reference and 8-channel multiplexer further reduce PCB board space requirements.

The low power consumption and small size make the LTC2309 ideal for battery-operated and portable applications, while the 2-wire I2C compatible serial interface makes this ADC a good match for space-constrained systems.

* 12-Bit Resolution * Low Power: 1.5mW at 1ksps, 35μW Sleep Mode * 14ksps Throughput Rate * Low Noise: SNR = 73.4dB * Guaranteed No Missing Codes * Single 5V Supply * 2-Wire I2C Compatible Serial Interface with Nine Addresses Plus One Global for Synchronization * Fast Conversion Time: 1.3μs * Internal Reference * Internal 8-Channel Multiplexer * Internal Conversion Clock * Unipolar or Bipolar Input Ranges (Software Selectable) * Guaranteed Operation from –40°C to 125°C (TSSOP Package) * 24-Pin 4mm × 4mm QFN and 20-Pin TSSOP Packages

Designed for Automotive and Transportation Applications AEC-Q100 generic family data available for specific packages

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