Features and Benefits
- 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
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.
- Industrial Process Control
- Motor Control
- Accelerometer Measurements
- Battery-Operated Instruments
- Isolated and/or Remote Data Acquisition
- Power Supply Monitoring
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Demonstration circuit 1337 features the LTC2309, a low noise, low power, 8-Channel, 12-Bit, successive approximation ADC with an I2C compatible serial interface. The LTC2309 is available in a 24-pin 4mm × 4mm QFN package. DC1337 demonstrates the DC performance of the LTC2309 in conjunction with the DC590B quick evaluation data collection board.
Tools & Simulations
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.