Overview
The LTC2451CDDB#TRMPBF is an ultra-tiny, 16-bit delta-sigma analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is designed for high precision and low power consumption, making it suitable for a variety of applications requiring accurate analog-to-digital conversion. The LTC2451 uses a single 2.7V to 5.5V supply and communicates through an I2C interface. It is available in an 8-pin, 3mm × 2mm DFN package, among other options.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16-bit |
| Supply Voltage | 2.7V to 5.5V |
| Analog Input Type | Single-ended |
| Interface | I2C |
| Package Type | 8-Lead DFN (3mm x 2mm w/ EP), 8-Lead SOT-23 |
| Conversion Rate | Up to 60 conversions per second |
| Power Consumption (Average) | < 50μW at 2.7V supply (reading once per second) |
| Sleep Mode Power | < 0.2μA |
| Input Voltage Range | VREF– to VREF+ (e.g., GND to VCC if VREF+ = VCC and VREF– = GND) |
Key Features
- Ultra-tiny package options (8-Lead DFN and SOT-23) for space-constrained applications.
- Integrated oscillator requiring no external components.
- Delta-sigma modulator as the converter core, providing high accuracy and low noise.
- Single-cycle settling time for multiplexed applications.
- Proprietary input sampling scheme reducing average input sampling current significantly.
- Continuous internal offset calibration algorithms ensuring accuracy over time and temperature.
- Low power consumption with automatic sleep mode capability.
Applications
The LTC2451 is suitable for various applications requiring high precision and low power analog-to-digital conversion. These include:
- Industrial automation and control systems.
- Medical devices and diagnostic equipment.
- Environmental monitoring and sensing systems.
- Automotive systems requiring precise analog measurements.
- Battery-powered devices where low power consumption is critical.
Q & A
- What is the resolution of the LTC2451 ADC?
The LTC2451 has a 16-bit resolution.
- What is the supply voltage range for the LTC2451?
The supply voltage range is from 2.7V to 5.5V.
- What type of analog input does the LTC2451 accept?
The LTC2451 accepts single-ended analog input.
- How does the LTC2451 communicate with other devices?
The LTC2451 communicates through an I2C interface.
- What are the package options available for the LTC2451?
The LTC2451 is available in 8-Lead DFN (3mm x 2mm w/ EP) and 8-Lead SOT-23 packages.
- What is the maximum conversion rate of the LTC2451?
The LTC2451 can perform up to 60 conversions per second.
- How much power does the LTC2451 consume on average?
The average power consumption is less than 50μW when reading once per second at a 2.7V supply.
- What is the power consumption in sleep mode?
In sleep mode, the power consumption is less than 0.2μA.
- What is the input voltage range for the LTC2451?
The input voltage range is from VREF– to VREF+, which can be set to range from GND to VCC if VREF+ = VCC and VREF– = GND.
- Does the LTC2451 require any external components for its oscillator?
No, the LTC2451 has an integrated oscillator that does not require any external components.
