Specifications
| Type | Description |
|---|---|
| Part Number | LDC1312 |
| Manufacturer | Texas Instruments |
| Product Type | 12-bit inductance-to-digital converter |
| Category | Sensors |
| Component Type | Sensor |
| Package / Case | LDC1312: WSON-12, 4 mm x 4 mm; LDC1314: WQFN-16, 4 mm x 4 mm |
| Channel Count | 2 channels; condition: LDC1312 |
| ADC Resolution | 12 bits; condition: RESET_DEV.OUTPUT_GAIN=b00; RCOUNTx >= 0x0400 |
| Sensor Frequency Range | 1 kHz to 10 MHz; condition: supported sensor resonance frequency range |
| Remote Sensor Position | >20 cm; condition: remote sensor position supported |
| Supply Voltage | 2.7 to 3.6 V; condition: recommended operating condition, TA=25°C unless otherwise specified |
| Operating Temperature | -40 to 125 °C; condition: recommended operating condition |
| Absolute Maximum Supply Voltage | 5 V; condition: stress rating only |
| Absolute Maximum Voltage on Any Pin | -0.3 V to VDD + 0.3 V; condition: stress rating only |
| Absolute Maximum INx Pin Input Current | -8 to 8 mA; condition: any INx pin, stress rating only |
| Absolute Maximum Digital Pin Input Current | -5 to 5 mA; condition: any digital pin, stress rating only |
| Absolute Maximum Junction Temperature | -55 to 150 °C; condition: stress rating only |
| Storage Temperature Range | -65 to 150 °C; condition: stress rating only |
| ESD HBM Rating | ±2000 V; condition: LDC1312 WSON-12, ANSI/ESDA/JEDEC JS-001 |
| ESD CDM Rating | ±750 V; condition: LDC1312 WSON-12, JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 50 °C/W; condition: LDC1312 WSON-12 package |
| Supply Current | 2.1 mA typ; condition: fCLKIN=10 MHz; sensor current not included; TA=25°C, VDD=3.3 V |
| Sleep Mode Supply Current | 35 µA typ, 60 µA max; condition: SLEEP_MODE_EN=b1; TA=25°C, VDD=3.3 V |
| Shutdown Mode Supply Current | 0.2 µA typ, 1 µA max; condition: SD=VDD; TA=25°C, VDD=3.3 V |
| Sensor Maximum Current Drive | 1.5 mA typ; condition: HIGH_CURRENT_DRV=b0; DRIVE_CURRENTx=0xF800 |
| Sensor Parallel Resistance Range | 1 to 100 kΩ; condition: sensor RP |
| High-Current Sensor Maximum Current Drive | 6 mA typ; condition: HIGH_CURRENT_DRV=b1; DRIVE_CURRENT0=0xF800; channel 0 only |
| Minimum Sensor Parallel Resistance in High-Current Mode | 250 Ω; condition: RP, high-current sensor drive mode |
| Sensor Resonance Frequency | 0.001 to 10 MHz; condition: TA=-40°C to +125°C |
| Maximum Oscillation Amplitude | 1.8 V peak; condition: sensor maximum oscillation amplitude |
| Maximum Channel Sample Rate | 13.3 kSPS; condition: single active channel continuous conversion, SCL=400 kHz |
| Sensor Pin Input Capacitance | 4 pF typ; condition: sensor input pins |
| ADDR and SD Low Voltage Threshold | 0.3 x VDD max; condition: digital pin logic low threshold |
| ADDR and SD High Voltage Threshold | 0.7 x VDD min; condition: digital pin logic high threshold |
| INTB Low Output Voltage | 0.4 V max; condition: 3 mA sink current |
| INTB High Output Voltage | 2.4 V min; condition: digital output high level |
| External Reference Clock Input Frequency | 2 to 40 MHz; condition: CLKIN, TA=-40°C to +125°C |
| External Reference Clock Minimum Duty Cycle | 40%; condition: CLKIN |
| External Reference Clock Maximum Duty Cycle | 60%; condition: CLKIN |
| CLKIN Low Voltage Threshold | 0.3 x VDD max; condition: external reference clock input |
| CLKIN High Voltage Threshold | 0.7 x VDD min; condition: external reference clock input |
| I2C Address Low Selection | 0x2A; condition: ADDR=L |
| I2C Address High Selection | 0x2B; condition: ADDR=H |
| Shutdown Pin Logic | SD=L normal operation; SD=H inactive mode; condition: SD input must not float |
| External Clock Pin Usage | Tie CLKIN to GND if internal oscillator is used; condition: CLKIN pin configuration |
| Datasheet Status | request_only |
Product Overview
The LDC1312 is a Texas Instruments Sensor component and a 12-bit inductance-to-digital converter. For the LDC1312 device, the channel count is 2 channels, and the package is WSON-12 with a 4 mm x 4 mm body size. The extracted package data also lists the related LDC1314 in WQFN-16, 4 mm x 4 mm.
The device operates from a recommended 2.7 to 3.6 V supply and across a -40 to 125 °C operating temperature range. Its supported sensor resonance frequency range is 1 kHz to 10 MHz, with the electrical table also specifying 0.001 to 10 MHz across -40 °C to +125 °C. The maximum channel sample rate is 13.3 kSPS for a single active channel in continuous conversion with SCL at 400 kHz.
Interface and assembly planning should account for ADDR-selected I2C addresses of 0x2A and 0x2B, SD pin logic where SD low is normal operation and SD high is inactive mode, and CLKIN handling where CLKIN is tied to GND when the internal oscillator is used.
Key Features
- 2-channel LDC1312 inductance-to-digital converter
- 12-bit ADC resolution under specified register conditions
- Supports 1 kHz to 10 MHz sensor frequency range
- Remote sensor position supported beyond 20 cm
- 2.7 to 3.6 V recommended supply range
- -40 to 125 °C recommended operating temperature
- 13.3 kSPS maximum channel sample rate
- I2C address selectable as 0x2A or 0x2B
- External CLKIN supports 2 to 40 MHz input
- Shutdown pin selects normal or inactive mode
Typical Applications
- Two-channel inductive sensing
- Remote sensor placement beyond 20 cm
- I2C-addressed sensor interfaces
- External reference clock sensor systems
- Internal oscillator sensor configurations
- High-current channel 0 sensor drive
- Continuous single-channel conversion
Procurement Notes
When requesting a quote for LDC1312, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What type of device is the LDC1312?
The LDC1312 is a Texas Instruments Sensor component described as a 12-bit inductance-to-digital converter. The LDC1312 version has 2 channels and is listed in a WSON-12, 4 mm x 4 mm package.
What sensor frequency range does LDC1312 support?
The extracted datasheet facts specify a supported sensor resonance frequency range of 1 kHz to 10 MHz. The electrical table also lists sensor resonance frequency as 0.001 to 10 MHz across -40°C to +125°C.
What supply and temperature ranges apply to LDC1312?
The recommended supply voltage range is 2.7 to 3.6 V. The recommended operating temperature range is -40 to 125 °C. Absolute maximum and storage ratings are stress ratings, not normal operating conditions.
How are the LDC1312 I2C addresses selected?
The ADDR pin selects the I2C address. When ADDR is low, the address is 0x2A. When ADDR is high, the address is 0x2B. The SD input must not float.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 28, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.