Overview
The LDC1614RGHR is a 4-channel, 28-bit inductance-to-digital converter (LDC) produced by Texas Instruments. This device is designed for inductive sensing applications and offers high resolution and multiple channel support. The LDC1614RGHR measures the oscillation frequency of LC resonators and outputs a digital value proportional to the frequency, which can be converted to an equivalent inductance or mapped to the movement of a conductive object. It operates within a wide temperature range of -40°C to 125°C and supports sensor frequencies from 1 kHz to 10 MHz.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Resolution | 28 bits | |
| Operating Temperature Range | -40 to 125 | °C |
| Oscillation Amplitude (Max) | 1.8 | V |
| Power Supply Voltage | 2.7 to 3.6 | V |
| Active Supply Current (Typ) | 2.1 | mA |
| Low Power Sleep Mode Current | 35 | µA |
| Shutdown Mode Current | 200 | nA |
| Package Type | WQFN (RGH) | |
| Number of Pins | 16 | |
| Interface | I2C | |
| Sensor Frequency Range | 1 kHz to 10 MHz | |
| Sensor Rp Range | 250 Ω to 100 kΩ |
Key Features
- Easy-to-use with minimal configuration required
- Supports up to 4 channels with matched sensor drive
- Multiple channels support environmental and aging compensation
- Remote sensor position of over 20 cm supports operation in harsh environments
- Pin-compatible medium and high-resolution options (LDC1312/4 and LDC1612/4)
- Sensing range beyond two coil diameters
- Supports a wide sensor frequency range of 1 kHz to 10 MHz
- Low power consumption: 35 µA in low power sleep mode and 200 nA in shutdown mode
- Immune to DC magnetic fields and magnets
- AEC-Q100 qualified for automotive applications (LDC1614-Q1 variant)
Applications
The LDC1614RGHR is suitable for a variety of applications, including:
- Consumer electronics for proximity sensing and touchless interfaces
- Industrial automation for position sensing and material detection
- Automotive systems for various sensing needs, such as liquid level detection and proximity sensing (LDC1614-Q1 variant)
- Medical devices requiring precise inductive sensing
- General-purpose inductive sensing in harsh environments
Q & A
- What is the resolution of the LDC1614RGHR?
The LDC1614RGHR has a resolution of 28 bits.
- How many channels does the LDC1614RGHR support?
The LDC1614RGHR supports up to 4 channels.
- What is the operating temperature range of the LDC1614RGHR?
The operating temperature range is -40°C to 125°C.
- What is the maximum oscillation amplitude of the LDC1614RGHR?
The maximum oscillation amplitude is 1.8 V.
- What interface does the LDC1614RGHR use for communication?
The LDC1614RGHR uses an I2C interface for communication.
- What is the power consumption in low power sleep mode?
The power consumption in low power sleep mode is 35 µA.
- Is the LDC1614RGHR immune to DC magnetic fields and magnets?
Yes, the LDC1614RGHR is immune to DC magnetic fields and magnets.
- What is the sensor frequency range supported by the LDC1614RGHR?
The sensor frequency range is from 1 kHz to 10 MHz.
- Is the LDC1614-Q1 variant AEC-Q100 qualified?
Yes, the LDC1614-Q1 variant is AEC-Q100 qualified for automotive applications.
- What type of package does the LDC1614RGHR come in?
The LDC1614RGHR comes in a WQFN (RGH) package with 16 pins.
