LTC2309CUF#PBF

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. It operates from an internal clock to achieve a fast 1.3µs conversion time. It 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. It 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 it 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.

Applications

• Industrial Process Control
• Motor Control
• Accelerometer Measurements
• Battery-Operated Instruments
• Isolated and/or Remote Data Acquisition
• Power Supply Monitoring

Key features

• 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