The OPA314 family of single-, dual-, and quad-channel operational amplifiers represents a new generation of low-power, general-purpose CMOS amplifiers. Rail-to-rail input and output swings, low quiescent current (150 µA typ at 5.0 VS) combined with a wide bandwidth of 3 MHz, and very low noise (14 nV/√Hz at 1 kHz) make this family very attractive for a variety of battery-powered applications that require a good balance between cost and performance. The low input bias current supports applications with mega-ohm source impedances.
The robust design of the OPA314 devices provides ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 300 pF, an integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electrostatic discharge (ESD) protection (4-kV HBM).
These devices are optimized for low-voltage operation as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V), and are specified over the full extended temperature range of –40°C to +125°C.
The OPA314 (single) is available in both SC70-5 and SOT23-5 packages. The OPA2314 (dual) is offered in SO-8, MSOP-8, and DFN-8 packages. The quad-channel OPA4314 is offered in a TSSOP-14 package.
|Number of Channels (#)|
|Total Supply Voltage (Min) (+5V=5, +/-5V=10)|
|Total Supply Voltage (Max) (+5V=5, +/-5V=10)|
|Iq per channel (Max) (mA)|
|Slew Rate (Typ) (V/us)|
|Vos (Offset Voltage @ 25C) (Max) (mV)|
|Offset Drift (Typ) (uV/C)|
|CMRR (Min) (dB)|
|GBW (Typ) (MHz)|
|IIB (Max) (pA)|
|Io (Typ) (mA)|
|Vn at 1kHz (Typ) (nV/rtHz)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
| In |
| In |
| In |
|-40 to 125||-40 to 125||-40 to 125|
| 5SC70 |
| 8SOIC |
|0.30 | 1ku||0.45 | 1ku||0.65 | 1ku|
|Sample & Buy||Sample & Buy||Sample & Buy|
|Part #||Name||Product Family||Comments|
|LM7705||Low Noise Negative Bias Generator||CHARGE PUMP (INDUCTORLESS) - BUCK/BOOST CHARGE PUMP||Switched capacitor voltage inverter with a low noise, −0.23V fixed negative voltage regulator|
|TPS7A4901||Vin 3V to 36V, 150mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO||TPS7A4901 is a positive, high-voltage (+36V), low-noise linear regulator designed to power high precision instrumentation applications where clean voltage rails are critical to maximize system performance|
|TPS7A3001||Vin -3V to -36V, -200mA, Ultra-Low Noise, High PSRR, Low-Dropout Linear Regulator||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO||TPS7A3001 is a negative, high-voltage (-36V), low-noise linear regulator designed to power high precision instrumentation applications where clean voltage rails are critical to maximize system performance|