OPA548 High-Voltage, High-Current, Wide-Output-Voltage-Swing Power Operational Amplfier | TI.com

OPA548
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High-Voltage, High-Current, Wide-Output-Voltage-Swing Power Operational Amplfier

 

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Description

The OPA548 device is a low-cost, high-voltage, and high-current operational amplifier that is designed to drive a wide variety of loads. A laser-trimmed, monolithic, integrated circuit provides excellent low-level signal accuracy and high-output voltage and current.

The OPA548 operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground.

The OPA548 is internally protected against overtemperature conditions and current overloads. In addition, the OPA548 is designed to provide an accurate, user-selected current limit. Unlike other designs that use a power resistor in series with the output current path, the OPA548 senses the load indirectly. The current limit is adjustable from 0 A to 5 A with an external resistor and potentiometer, or controllable digitally with a voltage-out or current-out DAC.

The Enable/Status (E/S) pin provides two functions. An input on the pin not only disables the output stage to effectively disconnect the load, but also reduces the quiescent current to conserve power. The E/S pin output can be monitored to determine if the OPA548 is in thermal shutdown.

The OPA548 device is available in an industry-standard 7-lead staggered and straight lead TO-220 package, and a 7-lead DDPAK surface-mount plastic power package. The copper tab allows easy mounting to a heat sink or circuit board for excellent thermal performance. The device is specified for operation over the extended industrial temperature range, –40°C to 85°C. A SPICE macromodel is available for design analysis.

Features

  • Wide supply range
    • Single supply: 8 V to 60 V
    • Dual supply: ±4 V to ±30 V
  • High-output current:
    • 3-A continuous
    • 5-A peak
  • Wide output voltage swing
  • Fully protected:
    • Thermal shutdown
    • Adjustable current limit
  • Output disable control˜
  • Thermal shutdown indicator
  • High slew rate: 10 V
  • Low quiescent current
  • Packages:
    • 7-lead TO-220, zip and straight leads
    • 7-lead DDPAK surface-mount

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Parametrics

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Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) Output current (Typ) (mA) GBW (Typ) (MHz) Slew rate (Typ) (V/us) Vos (offset voltage @ 25 C) (Max) (mV) Offset drift (Typ) (uV/C) Iq per channel (Typ) (mA) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Input bias current (Max) (pA) CMRR (Typ) (dB) Rail-to-rail Architecture
OPA548 Order now 1     8     60     3000     1     10     10     30     17     Adj Current Limit
Shutdown    
Catalog     -40 to 85     DDPAK/TO-263 | 7
TO-220 | 7
TO-220 | 7    
7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
7TO-220: 47 mm2: 4.58 x 10.16 (TO-220 | 7)
7TO-220: 84 mm2: 8.26 x 10.16 (TO-220 | 7)    
500000     95     In to V-     Bipolar    
OPA547 Samples not available 1     8     60     500     1     6     5     25     10     Adj Current Limit
Shutdown    
Catalog     -40 to 85     DDPAK/TO-263 | 7
TO-220 | 7
TO-220 | 7    
7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
7TO-220: 47 mm2: 4.58 x 10.16 (TO-220 | 7)
7TO-220: 84 mm2: 8.26 x 10.16 (TO-220 | 7)    
500000     95     In to V-     Bipolar    
OPA549 Samples not available 1     8     60     8000     0.9     9     5     20     26     Adj Current Limit
Shutdown    
Catalog     -40 to 85     Power Package | 11
TO-220 | 11    
11Power Package: 90 mm2: 4.5 x 20.02 (Power Package | 11)
11TO-220: 188 mm2: 9.37 x 20.02 (TO-220 | 11)    
500000     95     In to V-     Bipolar