The Texas Instruments OPA314AIDCKR is a low-power, general-purpose single-channel CMOS operational amplifier designed for portable electronics, sensor interfaces, active filters and precision low-voltage analog circuits.
The device supports a wide 1.8V to 5.5V supply range and provides rail-to-rail input and rail-to-rail output (RRIO) operation. This allows designers to maximize the available signal range when working with low-voltage 1.8V, 3.3V or 5V systems.
OPA314 offers a typical 3MHz gain-bandwidth product and 1.5V/µs slew rate, providing sufficient dynamic performance for general-purpose amplification, buffering, filtering and sensor signal-conditioning circuits.
Typical quiescent current is only 150uA per channel, helping minimize power consumption in battery-operated and always-on systems. The device also features low voltage noise of approximately 14nV/√Hz at 1kHz.
For precision signal processing, the OPA314 provides a typical input offset voltage of approximately 0.5mV, with TI listing a maximum offset voltage of 2.5mV at 25°C. Typical offset drift is approximately 1uV/°C.
The CMOS input stage offers extremely low input bias current, specified at approximately 0.2pA typical, making the amplifier particularly useful with high-impedance sensors, photodiodes and source impedances in the megaohm range.
The device is unity-gain stable and designed to remain stable with capacitive loads up to approximately 300pF. An integrated RF/EMI rejection filter improves immunity against high-frequency interference, while the amplifier avoids phase reversal during input overdrive conditions.
The specific OPA314AIDCKR ordering code is supplied in a compact 5-pin SOT-SC70 / SC70 (DCK) package measuring approximately 2.0 × 2.1mm. The R suffix denotes large tape-and-reel packaging with 3,000 pieces per reel. TI currently lists this ordering code as ACTIVE.
Key Features
- Manufacturer: Texas Instruments / TI
- Part Number: OPA314AIDCKR
- Product Type: Operational Amplifier
- Number of Channels: 1
- Architecture: CMOS
- Input / Output: Rail-to-Rail Input and Output
- Supply Voltage Range: 1.8V to 5.5V
- Gain Bandwidth Product: 3MHz Typical
- Slew Rate: 1.5V/µs Typical
- Quiescent Current: 150uA Typical
- Voltage Noise: 14nV/√Hz @ 1kHz
- Typical Input Offset Voltage: 0.5mV
- Maximum Input Offset Voltage: 2.5mV @ 25°C
- Typical Offset Drift: 1uV/°C
- Typical Input Bias Current: 0.2pA
- Maximum Input Bias Current: 10pA
- Typical CMRR: 80dB
- Typical Output Current: 20mA
- Unity-Gain Stable
- Capacitive Load Stability: Up to 300pF
- Integrated RF / EMI Filter
- No Phase Reversal in Overdrive
- HBM ESD Protection: 4kV
- Operating Temperature: -40°C to +125°C
- Package: SC70-5 / SOT-SC70-5
- Package Code: DCK
- Package Size: Approx. 2.0 × 2.1mm
- Mounting Type: Surface Mount / SMD
- Packaging: Large Tape & Reel
- Standard Reel Quantity: 3,000 pcs
- RoHS Compliant
- REACH Compliant
- Product Status: Active
Typical Applications
- Battery-Powered Instruments
- Sensor Signal Conditioning
- Photodiode Amplifiers
- Active Filters
- Voltage Buffer Circuits
- Portable Electronics
- Remote Sensing Systems
- Wireless Metering
- Handheld Test Equipment
- Consumer Electronics
- Industrial Electronics
- Low-Voltage Analog Circuits
The OPA314AIDCKR is well suited for applications requiring a compact 1.8V–5.5V single-channel RRIO operational amplifier with low power consumption, 3MHz bandwidth and high input impedance.
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