The OPA334 and OPA335 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide very low offset voltage (5µV max), and near zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high input impedance and rail-to-rail output swing. Single or dual supplies as low as +2.7V (±1.35V) and up to +5.5V (±2.75V) may be used. These op amps are optimized for low-voltage, single-supply operation.
The OPA334 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current of 2µA. When the Enable pin is connected high, the amplifier is active. Connecting Enable low disables the amplifier, and places the output in a high impedance state.
The OPA334 (single version with shutdown) comes in MicroSIZE SOT23-6. The OPA335 (single version without shutdown) is available in SOT23-5, and SO-8. The OPA2334 (dual version with shutdown) comes in MicroSIZE MSOP-10. The OPA2335 (dual version without shutdown) is offered in the MSOP-8 and SO-8 packages. All versions are specified for operation from 40°C to +125°C.
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| Number of channels | 2 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 5.5 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 2.7 |
| Vos (offset voltage at 25°C) (max) (mV) | 0.005 |
| GBW (typ) (MHz) | 2 |
| Features | EMI Hardened, Shutdown, Zero Drift |
| Slew rate (typ) (V/µs) | 1.6 |
| Rail-to-rail | In to V-, Out |
| Offset drift (typ) (µV/°C) | 0.02 |
| Iq per channel (typ) (mA) | 0.285 |
| Vn at 1 kHz (typ) (nV√Hz) | 60 |
| CMRR (typ) (dB) | 130 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| Input bias current (max) (pA) | 200 |
| Iout (typ) (A) | 0.05 |
| Architecture | CMOS |
| Input common mode headroom (to negative supply) (typ) (V) | -0.1 |
| Input common mode headroom (to positive supply) (typ) (V) | -1.5 |
| Output swing headroom (to negative supply) (typ) (V) | 0.015 |
| Output swing headroom (to positive supply) (typ) (V) | -0.015 |
| VSSOP (DGS) | 10 | 14.7 mm² 3 x 4.9 |