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


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


Recommended alternative parts

  • OPA549  -  High-Voltage, High-Current Op Amp, Excellent Output Swing


The OPA548 device is a low-cost, high-voltage and high-current operational amplifier that’s ideal for driving 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 device operates from either single or dual supplies for design flexibility. In single-supply operation, the input common-mode range extends below ground.

The OPA548 device is internally protected against over-temperature conditions and current overloads. In addition, the OPA548 device was designed to provide an accurate, user-selected current limit. Unlike other designs, which use a resistor in series with the output current path, the OPA548 device senses the load indirectly. This allows the current limit to be adjusted from 0 A to 5 A with a resistor and potentiometer or controlled 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.


  • 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

View more

Parametrics Compare all products in Power op amps

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)
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
Input bias current (Max) (pA)
CMRR (Typ) (dB)
OPA548 OPA547 OPA549
1     1     1    
8     8     8    
60     60     60    
3000     500     8000    
1     1     0.9    
10     6     9    
10     5     5    
30     25     20    
17     10     26    
Adj Current Limit
Adj Current Limit
Adj Current Limit
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
DDPAK/TO-263 | 7
TO-220 | 7    
DDPAK/TO-263 | 7
TO-220 | 7    
Power Package | 11
TO-220 | 11    
7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
See datasheet (TO-220)    
7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
See datasheet (TO-220)    
11Power Package: 90 mm2: 4.5 x 20.02 (Power Package | 11)
See datasheet (TO-220)    
500000     500000     500000    
95     95     95    
In to V-     In to V-     In to V-    
Bipolar     Bipolar     Bipolar    

Design tool

WEBENCH® Designer OPA548

Amplifier Topology
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 8.0 to 60.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 85.0 °C