The PA74 is a dual power operational amplifier featuring 2.5 A x 2 of continuous output current on 5 V to 40 V single supplies. The product design for the PA74 utilizes both monolithic and hybrid technologies by placing two ICs in an electrically isolated, hermetically sealed, 8-pin TO-3 metal package. The result is a cost-effective solution for applications requiring multiple amplifiers per board or bridge-mode configurations.
The ICs that comprise the PA74 are designed with dual input and output stages to achieve the desired input and output characteristics. The input stage utilizes a dual power amplifier on a single IC that drives the output stages. The output stages are configured in a non-inverting unity gain buffer configuration. The output stages of the amplifier are also compensated for stability but are not recommended for use as unity gain followers.
The PA74A is the A grade version providing 3A x 2 of output current and enhanced performance in the areas of offset voltage and voltage swing. The PA74M is the non-compliant military grade version.
| Part | Output Current MAX (A) | Supply Voltage MAX (V) | Slew Rate TYP (V/µs) | Standby Current MAX (mA) |  Power Dissipation MAX (W) |
|---|---|---|---|---|---|
| PA74 | 2.5 (x2) | 40 | 1.4 | 40 | 36 / 60 |
| PA74A | 3 (x2) | 40 | 1.4 | 40 | 36 / 60 |
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