The OPA734 and OPA735 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide 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 within 50mV of the rails. Either single or bipolar supplies can be used in the range of +2.7V to +12V (±1.35V to ±6V). They are optimized for low-voltage, single-supply operation.
The OPA734 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current that is 9µA (max) and the output placed in a high-impedance state.
The single version is available in the MicroSIZE SOT23-5 (SOT23-6 for shutdown version) and the SO-8 packages. The dual version is available in the MSOP-8 and SO-8 packages (MSOP-10 only for the shutdown version). All versions are specified for operation from –40°C to +85°C.
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| Number of channels | 1 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) | 12 |
| 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) | 1.6 |
| Features | Zero Drift |
| Slew rate (typ) (V/µs) | 1.5 |
| Rail-to-rail | In to V-, Out |
| Offset drift (typ) (µV/°C) | 0.01 |
| Iq per channel (typ) (mA) | 0.6 |
| Vn at 1 kHz (typ) (nV√Hz) | 135 |
| CMRR (typ) (dB) | 130 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
| Input bias current (max) (pA) | 200 |
| Iout (typ) (A) | 0.02 |
| 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) | 0.02 |
| Output swing headroom (to positive supply) (typ) (V) | -0.02 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
| SOT-23 (DBV) | 5 | 8.12 mm² 2.9 x 2.8 |
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