Specifications
| Type | Description |
|---|---|
| Part Number | FDC2214 |
| Manufacturer | Texas Instruments |
| Product Type | Capacitance-to-digital converter |
| Category | Sensor |
| Component Type | Sensor |
| Package Case | RGH WQFN-16, 4 mm x 4 mm |
| Resolution | 28 bits |
| Number of Channels | 4 |
| Package | WQFN-16 |
| Package Size | 4 mm x 4 mm |
| Maximum Output Rate | 4.08 kSPS; FDC2212/FDC2214, one active channel |
| Maximum Input Capacitance | 250 nF; 10 kHz with 1 mH inductor |
| Sensor Excitation Frequency | 10 kHz to 10 MHz; operating range |
| System Noise Floor | 0.3 fF; 100 SPS |
| Supply Voltage | 2.7 V to 3.6 V; recommended operating conditions |
| Active Supply Current | 2.1 mA typ; CLKIN = 10 MHz, not including sensor current |
| Sleep Mode Supply Current | 35 uA typ, 60 uA max; I2C and pullup resistor current not included |
| Shutdown Mode Supply Current | 0.2 uA typ, 1 uA max; I2C and pullup resistor current not included |
| Operating Temperature | -40 C to +125 C; recommended operating conditions |
| Absolute Maximum Supply Voltage | 5 V max; VDD supply voltage range |
| Voltage on Any Pin | -0.3 V to VDD + 0.3 V; absolute maximum rating |
| Input Current on INx Pin | -8 mA to +8 mA; absolute maximum rating |
| Input Current on Digital Pin | -5 mA to +5 mA; absolute maximum rating |
| Junction Temperature | -55 C to +150 C; absolute maximum rating |
| Storage Temperature | -65 C to +150 C; absolute maximum rating |
| HBM ESD Rating | +/-2000 V; FDC2114/FDC2214 in 16-pin WQFN, ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | +/-750 V; FDC2114/FDC2214 in 16-pin WQFN, JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 38 C/W; FDC2214 RGH WQFN-16 package |
| Sensor Pin Parasitic Capacitance | 4 pF typ; capacitive sensor input pins |
| Number of Bits | 28 bits; FDC2212/FDC2214, RCOUNT = 0xFFFF |
| Maximum Channel Sample Rate | 4.08 kSPS; single active channel continuous conversion, SCL = 400 kHz |
| Sensor Excitation Frequency Across Temperature | 0.01 MHz to 10 MHz; TA = -40 C to +125 C |
| Minimum Sensor Oscillation Amplitude | 1.2 V pk min; lower amplitudes can be used but reduce SNR |
| Maximum Sensor Oscillation Amplitude | 1.8 V pk max; sensor excitation |
| Sensor Maximum Current Drive | 1.5 mA max; HIGH_CURRENT_DRV = b0, DRIVE_CURRENT_CH0 = 0xF800 |
| Sensor Maximum Current Drive, High Current | 6 mA max; HIGH_CURRENT_DRV = b1, DRIVE_CURRENT_CH0 = 0xF800, channel 0 only |
| External Controller Clock Frequency | 2 MHz to 40 MHz; CLKIN, TA = -40 C to +125 C |
| External Controller Clock Duty Cycle | 40% min, 60% max; CLKIN acceptable duty cycle |
| CLKIN Low Voltage Threshold | 0.3 x VDD; external controller clock input |
| CLKIN High Voltage Threshold | 0.7 x VDD; external controller clock input |
| Internal Controller Clock Frequency | 35 MHz min, 43.4 MHz typ, 55 MHz max; internal oscillator |
| Internal Controller Clock Temperature Coefficient | -13 ppm/C typ; mean value |
| Wake-Up Time from Shutdown | 2 ms max; SD high-to-low transition to I2C readback |
| Wake-Up Time from Sleep Mode | 0.05 ms max; sleep mode exit |
| Sensor Recovery Time | 5.2 ms max; after watchdog timeout |
| Digital Interface | I2C; device interface |
| I2C Address | 0x2A when ADDR = L, 0x2B when ADDR = H; ADDR pin selection |
| Datasheet Status | request_only |
Product Overview
The Texas Instruments FDC2214 is a four-channel capacitance-to-digital converter intended for capacitive sensor measurement. It combines 28-bit conversion resolution with an I2C digital interface, allowing host access through selectable addresses of 0x2A when ADDR is low or 0x2B when ADDR is high.
Sensor operation supports excitation frequencies from 10 kHz to 10 MHz, equivalent to 0.01 MHz to 10 MHz across -40 C to +125 C. With one active channel, the device reaches a maximum output or channel sample rate of 4.08 kSPS. The extracted specifications also list a 0.3 fF system noise floor at 100 SPS and a maximum input capacitance of 250 nF under the stated 10 kHz, 1 mH inductor condition.
The device is supplied in an RGH WQFN-16 package with a 4 mm x 4 mm body size and 38 C/W junction-to-ambient thermal resistance. Recommended supply operation is 2.7 V to 3.6 V, with active, sleep, and shutdown current conditions defined in the datasheet facts.
Key Features
- 28-bit capacitance-to-digital conversion resolution
- Four capacitive sensor input channels
- 4.08 kSPS maximum single-channel output rate
- 10 kHz to 10 MHz sensor excitation range
- 0.3 fF system noise floor at 100 SPS
- 2.7 V to 3.6 V supply operation
- I2C interface with two selectable addresses
- WQFN-16 package in 4 mm x 4 mm size
- Shutdown current of 0.2 uA typical
- -40 C to +125 C operating temperature range
Typical Applications
- Capacitive sensor measurement
- Multi-channel capacitance sensing
- Low-noise capacitance acquisition
- I2C-connected sensor modules
- Temperature-rated sensing systems
- Shutdown-capable sensor nodes
- External-clock sensor designs
Procurement Notes
When requesting a quote for FDC2214, 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 FDC2214?
The FDC2214 is a Texas Instruments capacitance-to-digital converter in the Sensor category. It provides four channels and 28-bit conversion resolution for capacitive sensor input measurement through an I2C digital interface.
What package is used for the FDC2214?
The FDC2214 uses the RGH WQFN-16 package. The extracted package size is 4 mm x 4 mm, and the listed junction-to-ambient thermal resistance for this package is 38 C/W.
What supply and temperature range does the FDC2214 support?
The recommended supply voltage range is 2.7 V to 3.6 V. The recommended operating temperature range is -40 C to +125 C, while absolute maximum junction temperature is listed as -55 C to +150 C.
What digital interface and addresses are specified?
The FDC2214 uses an I2C digital interface. Its address is selected by the ADDR pin: 0x2A when ADDR is low and 0x2B when ADDR is high.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 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.