Overview
The LDC1612DNTR, produced by Texas Instruments, is a 2-channel, 28-bit inductance to digital converter (LDC) designed for inductive sensing solutions. This device is part of the LDC1612 and LDC1614 family, which offers high-resolution inductive sensing with minimal cost and power consumption. The LDC1612 is easy to use, requiring only that the sensor frequency be within 1 kHz and 10 MHz to begin sensing. It supports remote sensing and is particularly useful in harsh environments due to its remote sensor position capability of over 20 cm.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Resolution | 28 bits |
| Sensor Frequency Range | 1 kHz to 10 MHz |
| Power Supply | 2.7 V to 3.6 V |
| Power Consumption | 35 µA (Low Power Sleep Mode), 200 nA (Shutdown Mode) |
| Package Type | WSON-12 (4 mm × 4 mm) |
| Interface | I2C (400 kbit/s) |
| Operating Temperature | -40°C to +125°C |
| Reference Clocking Options | Internal Clock, Support for 40 MHz External Clock |
Key Features
- Multiple channels with matched sensor drive for environmental and aging compensation.
- Remote sensor position of over 20 cm supports operation in harsh environments.
- Sensing range beyond two coil diameters.
- Immunity to DC magnetic fields and magnets.
- Adjustable conversion time for tradeoff between measurement resolution and conversion interval.
- Configurable sensor current drive from 16 µA to 1.6 mA.
- Device status monitoring and sensor status reporting via I2C interface.
- Low power consumption with 35 µA in low power sleep mode and 200 nA in shutdown mode.
- Easily configured via I2C interface with ADDR input pin for address selection.
Applications
- Knobs in consumer, appliances, and automotive applications.
- Buttons in home electronics, wearables, manufacturing, and automotive applications.
- Keypads in manufacturing and appliances.
- Slider buttons in consumer products.
- Metal detection in industrial and automotive applications.
- Point of Sale (POS) and Electronic Point of Sale (EPOS) systems.
Q & A
- What is the resolution of the LDC1612DNTR?
The LDC1612DNTR has a resolution of 28 bits.
- What is the sensor frequency range supported by the LDC1612DNTR?
The sensor frequency range is from 1 kHz to 10 MHz.
- What is the power supply range for the LDC1612DNTR?
The power supply range is from 2.7 V to 3.6 V.
- How many channels does the LDC1612DNTR support?
The LDC1612DNTR supports 2 channels.
- What is the package type of the LDC1612DNTR?
The package type is WSON-12 (4 mm × 4 mm).
- What interface does the LDC1612DNTR use for configuration and data transmission?
The LDC1612DNTR uses an I2C interface (400 kbit/s).
- What are the power consumption modes of the LDC1612DNTR?
The device has a low power sleep mode consuming 35 µA and a shutdown mode consuming 200 nA.
- Can the LDC1612DNTR operate in harsh environments?
Yes, it supports remote sensor positions of over 20 cm, making it suitable for harsh environments.
- How is the conversion time configured on the LDC1612DNTR?
The conversion time can be configured from 3.2 µs to over 26.2 ms with 16 bits of resolution.
- What is the purpose of the ADDR input pin on the LDC1612DNTR?
The ADDR input pin is used for I2C address selection.
