PA26

SUPPLY VOLTAGE, total 5V to 40V
OUTPUT CURRENT SOA
POWER DISSIPATION, internal (per amplifier) 25W
POWER DISSIPATION, internal (both amplifiers)36W
INPUT VOLTAGE, differential ±V_S
INPUT VOLTAGE, common mode +VS, -VS.5V
JUNCTION TEMPERATURE, max1 150°C
TEMPERATURE, pin solder-10 sec max300°C
TEMPERATURE RANGE, storage 65°C to 150°C
OPERATING TEMPERATURE RANGE, case 55°C to 125°C

The amplifiers consist of a monolithic dual power op amp in a 8-pin hermetic TO-3 package (PA21 and PA25) and a 12-pin SIP package (PA26). Putting two power op amps in one package and on one die results in an extremely cost effective solution for applications requiring multiple amplifiers per board or bridge mode configurations.

The wide common mode input range of PA26 includes the negative rail, facilitating single supply applications. It is possible to have a "ground based" input driving a single supply amplifier with ground acting as the "second" or "bottom"supply of the amplifier.

The output stages of PA26 are also well protected. They possess internal current limit circuits. While the device is well pro-tected, the Safe Operating Area (SOA) curve must be observed. Proper heatsinking is required for maximum reliabil-ity.

This hybrid integrated PA26 circuit utilizes thick film (cermet)resistors, ceramic capacitors and semiconductor chips to maximize reliability, minimize size and give top performance.Ultrasonically bonded aluminum wires provide reliable interconnections at all operating temperatures. The 8-pin TO-3 package of PA26 is hermetically sealed and electrically isolated. The use of compressible isolation washers voids the warranty. The tab of the SIP12 plastic package is tied to VS.

The PA26 is a kind of power dual operational amplifier. PA26 is available in a 8-pin hermetic TO-3 package. The wide common mode input range of PA26 includes the negative rail, facilitating single supply applications. The typical applications of PA26 include (1)half & full bridge motor drivers; (2)audio power amplifier: 18 W RMS per channel for stereo and 36 W RMS per package for bridge; (3)ideal for single supply systems: 5 V for peripherals, 12 V for automotive and 28 V for avionic.

There are some features of PA26 as follows: (1)low cost; (2)wide common mode range which includes negative supply wide supply voltage range; (3)single supply: 5 V to 40 V; (4)Split supplies: ±2.5 V to ±20 V; (5)high efficiency: |Vs-2 V| at 2.5 A typ; (6)internal current limit; (7)low distortion.

The following is about the absolute maximum ratings of PA26: (1)supply voltage, total: 5 V to 40 V; (2)output current: SOA; (3)power dissipation, internal (per amplifier): 25 W; (4)power dissipation, internal (both amplifiers): 36 W; (5)input voltage, differential: ±VS V; (6)input voltage, common mode: +VS to -VS-0.5 V; (7)temperature, pin solder-10 sec: 300; (8)temperature range, storage: -65 to +150; (9)operating temperature range, case: -55 to +125.