The OPA725 and OPA726 series op amps use a state-of-the-art 12V analog CMOS process, and combine outstanding ac performance with low bias current and excellent CMRR, PSRR, and AOL. The 20MHz Gain-Bandwidth (GBW) Product is achieved by using a proprietary and patent-pending output stage design. These characteristics allow excellent 16-bit settling times for driving 16-bit Analog-to-Digital Converters (ADCs).
Excellent ac characteristics, such as 20MHz GBW, 30V/µs slew rate and 0.0003% THD+N make the OPA725 and OPA726 well-suited for communication, high-end audio, and active filter applications. With bias current of less than 200pA, they are well-suited for use as transimpedance (I/V-conversion) amplifiers for monitoring optical power in ONET applications.
The OPA725 and OPA726 op amps can be used in single-supply applications from 4V up to 12V, or dual-supply from ±2V to ±6V. The output swings to within 150mV of the rails, maximizing dynamic range. The shutdown versions (OPAx726) reduce the quiescent current to less than 6µA and feature a reference pin for easy shutdown operation with standard CMOS logic in dual supply applications.
The OPA725 (single) is available in SOT23-5 and SO-8 [ackages, and the OPA2725 (dual) is available in MSOP-8 (Q1 04) and SO-8 packages. The OPA726 (single with shutdown) is available in MSOP-8 and SO-8. The OPA2726 (dual with shutdown) is available in MSOP-10. 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) | 12 |
| Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) | 4 |
| Rail-to-rail | In to V-, Out |
| GBW (typ) (MHz) | 20 |
| Slew rate (typ) (V/µs) | 30 |
| Vos (offset voltage at 25°C) (max) (mV) | 3 |
| Iq per channel (typ) (mA) | 4.3 |
| Vn at 1 kHz (typ) (nV√Hz) | 10 |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| Offset drift (typ) (µV/°C) | 4 |
| Input bias current (max) (pA) | 200 |
| CMRR (typ) (dB) | 94 |
| Iout (typ) (A) | 0.04 |
| Architecture | CMOS |
| Input common mode headroom (to negative supply) (typ) (V) | 0 |
| Input common mode headroom (to positive supply) (typ) (V) | -2 |
| Output swing headroom (to negative supply) (typ) (V) | 0.1 |
| Output swing headroom (to positive supply) (typ) (V) | -0.1 |
| SOIC (D) | 8 | 29.4 mm² 4.9 x 6 |
| VSSOP (DGK) | 8 | 14.7 mm² 3 x 4.9 |