LTC2309 Datasheet | Linear Technology

8-Channel, 12-Bit SAR ADC with I2C Interface Features Description n 12-Bit Resolution n Low Power: 1.5m W at 1ksps, 35µW Sleep Mode n 14ksps Throughput Rate n Low Noise: SNR = 73.4d B n Guaranteed No Missing Codes n Single 5V Supply n 2-Wire I2C patible Serial Interface with Nine Addresses Plus One Global for Synchronization n Fast Conversion Time: 1.3µs n Internal Reference n Internal 8-Channel Multiplexer n Internal Conversion Clock n Unipolar or Bipolar Input Ranges (Software Selectable) n Guaranteed Operation from - 40°C to 125°C (TSSOP Package) n 24-Pin 4mm × 4mm QFN and 20-Pin TSSOP Packages Applications n Industrial Process Control n Motor Control n Accelerometer Measurements n Battery-Operated Instruments n Isolated and/or Remote Data Acquisition n Power Supply Monitoring The LTC®2309 is a low noise, low power, 8-channel, 12-bit successive approximation ADC with an I2C patible serial interface. This ADC includes an internal reference and a fully differential sample-and-hold circuit to reduce mon 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 patible serial interface makes this ADC a good match for space-constrained systems. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy Drive is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. BLOCK DIAGRAM 5V 0.1µF 10µF CH0 CH1 CH2...