SBOS070D October   1997  – December 2019 OPA548

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
    1.     Simplified Schematic
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Adjustable Current Limit
      2. 7.3.2 Enable/Status (E/S) Pin
      3. 7.3.3 Thermal Shutdown Status
    4. 7.4 Device Functional Modes
      1. 7.4.1 Output Disable
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Basic Circuit Connections
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Power Supply Requirements
          2. 8.2.1.2.2 Gain Setting and Input Configuration
          3. 8.2.1.2.3 Current Limit
          4. 8.2.1.2.4 Safe-Operating-Area
          5. 8.2.1.2.5 Heat Sinking
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Monitoring Single- and Dual-Supplies
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
          1. 8.2.2.2.1 Output Disable and Thermal Shutdown Status
      3. 8.2.3 Programmable Power Supply
    3. 8.3 System Examples
  9. 9 Power Supply Recommendations
    1. 9.1 Output Stage Compensation
    2. 9.2 Output Protection
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Safe Operating Area
      2. 10.1.2 Amplifier Mounting
      3. 10.1.3 Power Dissipation
      4. 10.1.4 Thermal Considerations
      5. 10.1.5 Heat Sinking
        1. 10.1.5.1 Heat Sink Selection Example
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
Input offset voltage VCM = 0 V, IO = 0 A ±2 ±10 mV
Input offset voltage drift VCM = 0 V, IO = 0 A,
TA = –40°C to +85°C		 ±30 µV/°C
Power-supply rejection ratio VCM = 0 V, IO = 0 A,
VS = ±4 V to ±30 V		 30 100 µV/V
INPUT BIAS CURRENT(1)
Input bias current(2) VCM = 0 V –100 –500 nA
Input bias current drift VCM = 0 V, TA = –40°C to +85°C ±0.5 nA/°C
Input offset current VCM = 0 V ±5 ±50 nA
NOISE
Input voltage noise density f = 1 kHz 90 nV/√Hz
Current noise density f = 1 kHz 200 fA/√Hz
INPUT VOLTAGE
Common-mode voltage Positive Linear operation (V+) – 3 (V+) – 2.3 V
Negative Linear operation (V–) – 0.1 (V–) – 0.2
Common-mode rejection VCM = (V–) – 0.1 V to (V+) – 3 V 80 95 dB
INPUT IMPEDANCE
Differential input impedance 107 || 6 Ω || pF
Common-mode input impedance 109 || 4 Ω || pF
OPEN-LOOP GAIN
Open-loop voltage gain VO = ±25 V, RL = 1 kΩ 90 98 dB
VO = ±25 V, RL = 8 Ω 90 dB
FREQUENCY RESPONSE
Gain-bandwidth product RL = 8 Ω 1 MHz
Slew rate G = 1, VO = 50 VPP, RL = 8 Ω 10 V/µs
Full-power bandwidth See Typical Characteristics kHz
Settling time To ±0.1%, G = –10, VO = 50 VPP 15 µs
Total harmonic distortion + noise(3) f = 1 kHz, RL = 8 Ω, G = 3,
Power = 10 W		 0.02%
OUTPUT
Voltage output Positive IO = 3 A (V+) – 4.1 (V+) – 3.7 V
Negative IO = –3 A (V–) + 3.7 (V–) + 3.3
Positive IO = 0.6 A (V+) – 2.4 (V+) – 2.1
Negative IO = –0.6 A (V–) + 1.3 (V–) + 1.0
Maximum continuous current output DC ±3 A
AC 3 Arms
Leakage current, output disabled, dc See Typical Characteristics
Output current limit –5 5 A
Output current limit equation ILIM = (15000)(4.75) / (13750 Ω + RCL) A
Output current limit tolerance(1) RCL = 14.8 kΩ (ILIM = ±2.5 A),
RL = 8 Ω		 ±100 ±250 mA
Capacitive load drive See Figure 19
OUTPUT ENABLE /STATUS (E/S) PIN
Shutdown input mode VE/S HIGH (output enabled) E/S pin open or forced high (V–) + 2.4 V
VE/S LOW (output disabled) E/S pin forced low (V–) + 0.8
IE/S HIGH (output enabled) E/S pin high –65 µA
IE/S LOW (output disabled) E/S pin low –70
Output disable time 1 µs
Output enable time 3 µs
Thermal shutdown status output Normal operation, sourcing 20 µA (V–) + 2.4 (V–) + 3.5 V
Thermally shut down,
sinking 5 µA, TJ > 160°C		 (V–) + 0.35 (V–) + 0.8
Thermal protection junction temperature Shutdown 160 °C
Reset from shutdown 140
POWER SUPPLY
Quiescent current ILIM connected to V–, IO = 0 A ±17 ±20 mA
Quiescent current, shutdown mode ILIM connected to V–, IO = 0 A ±6 mA
(1) High-speed test at TJ = 25°C.
(2) Positive conventional current flows into the input terminals.
(3) See Figure 12 for additional power levels.