Overview
The LTC2309IF, produced by Analog Devices Inc., is a low noise, low power, 8-channel, 12-bit successive approximation analog-to-digital converter (ADC) with an I²C compatible serial interface. This ADC is designed to offer high performance and efficiency, making it suitable for a variety of applications, particularly in space-constrained and battery-operated systems.
The device includes an internal reference and a fully differential sample-and-hold circuit to minimize common mode noise. It operates from a single 5V supply, drawing only 300µA at a throughput rate of 1ksps, and enters a low power nap mode when not converting to reduce power dissipation.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-bit | |
| Number of Channels | 8 | |
| Conversion Time | 1.3µs | |
| Throughput Rate | Up to 14ksps | |
| Supply Voltage | 5V | |
| Current Consumption | 300µA at 1ksps | |
| Power Consumption in Sleep Mode | 35µW | |
| Signal-to-Noise Ratio (SNR) | 73.4dB | |
| Input Range | Unipolar: 0V to 4.096V, Bipolar: ±2.048V | |
| Operating Temperature | -40°C to 125°C | |
| Package Options | 20-pin TSSOP, 24-pin QFN (4mm x 4mm x 0.75mm) |
Key Features
- Low noise and low power consumption, making it ideal for battery-operated and portable applications.
- I²C compatible serial interface with nine addresses plus one global for synchronization.
- Internal 2.5V reference and 8-channel multiplexer to reduce PCB board space requirements.
- Fast conversion time of 1.3µs and a throughput rate of up to 14ksps.
- Guaranteed no missing codes and high dynamic accuracy.
- Internal conversion clock and fully differential sample-and-hold circuit to reduce common mode noise.
- Unipolar or bipolar input ranges selectable via software.
- Low power nap mode to reduce power dissipation when not converting.
Applications
- Industrial process control
- Motor control
- Accelerometer measurements
- Battery-operated instruments
- Isolated and/or remote data acquisition
- Power supply monitoring
- Automotive applications, including electronic cockpit solutions, BMS solutions, motor/electric drive sensors, and autonomous driving solutions.
Q & A
- What is the resolution of the LTC2309IF ADC?
The LTC2309IF has a 12-bit resolution.
- How many channels does the LTC2309IF support?
The LTC2309IF supports 8 channels.
- What is the conversion time of the LTC2309IF?
The conversion time is 1.3µs.
- What is the maximum throughput rate of the LTC2309IF?
The maximum throughput rate is up to 14ksps.
- What is the supply voltage for the LTC2309IF?
The supply voltage is 5V.
- How much current does the LTC2309IF consume at 1ksps throughput rate?
The current consumption is 300µA at 1ksps.
- What are the package options available for the LTC2309IF?
The LTC2309IF is available in 20-pin TSSOP and 24-pin QFN (4mm x 4mm x 0.75mm) packages.
- What are the operating temperature ranges for the LTC2309IF?
The operating temperature range is -40°C to 125°C.
- Does the LTC2309IF have an internal reference and multiplexer?
Yes, the LTC2309IF includes an internal 2.5V reference and an 8-channel multiplexer.
- Can the input range of the LTC2309IF be configured as unipolar or bipolar?
Yes, the input range can be configured as unipolar (0V to 4.096V) or bipolar (±2.048V) via software.
