SNOS935C February   2001  – December 2014 LM321

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and 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
    4. 7.4 Device Functional Modes
      1. 7.4.1 Common-Mode Voltage Range
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Noninverting DC Gain (0-V Input = 0-V Output)
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 DC Summing Amplifier (VIN's ≥ 0 VDC and VO ≥ VDC)
      3. 8.2.3 Amplitude Modulator Circuit
      4. 8.2.4 Power Amplifier
      5. 8.2.5 LED Driver
      6. 8.2.6 Fixed Current Sources
      7. 8.2.7 Lamp Driver
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6 Specifications

6.1 Absolute Maximum Ratings (1)

MIN MAX UNIT
Differential Input Voltage ±Supply Voltage
Input Current (VIN < −0.3 V) (2) 50 mA
Supply Voltage (V+ - V−) 32 V
Input Voltage −0.3 32 V
Output Short Circuit to GND, V+ ≤ 15 V and TA = 25°C (3) Continuous
Junction Temperature (4) 150 °C
 Mounting Temperature: Lead temperature (Soldering, 10 sec) 260 °C
 Mounting Temperature: Infrared (10 sec) 215 °C
Storage temperature, Tstg –65 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector base junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output voltages of the operational amplifer to go to the V+ voltage level (or to ground for a large overdrive) for the time duration that an input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a value greater than −0.36V (at 25°C).
(3) Short circuits from the output V+ can cause excessive heating and eventual destruction. When considering short circuits to ground the maximum output current is approximately 40mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.
(4) The maximum power dissipation is a function of TJ(MAX), θJA , and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(MAX) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±300 V
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

MIN MAX UNIT
Temperature Range −40 85 °C
Supply Voltage 3 30 V

6.4 Thermal Information

THERMAL METRIC(1) LM321 UNIT
DBV
5 PINS
RθJA Junction-to-ambient thermal resistance 265 °C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

Unless otherwise specified, all limits specified for at TA = 25°C; V+ = 5 V, V− = 0 V, VO = 1.4 V
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOS Input Offset Voltage (1) 2 7 mV
(1), –40°C ≤ TJ ≤ 85°C 9
IOS Input Offset Current 5 50 nA
–40°C ≤ TJ ≤ 85°C 150
IB Input Bias Current (2) 45 250 nA
–40°C ≤ TJ ≤ 85°C 500
VCM Input Common-Mode Voltage Range V+ = 30 V (3), for CMRR > = 50dB 0 V+ - 1.5 V
V+ = 30 V (3), for CMRR > = 50dB, –40°C ≤ TJ ≤ 85°C V+ - 2
AV Large Signal Voltage Gain (V+ = 15 V, RL = 2kΩ, VO = 1.4 V to 11.4 V) 25 100 V/mV
(V+ = 15 V, RL = 2kΩ, VO = 1.4 V to 11.4 V), –40°C ≤ TJ ≤ 85°C 15
PSRR Power Supply Rejection Ratio RS ≤ 10kΩ,
V+ ≤ 5 V to 30 V		 65 100 dB
CMRR Common Mode Rejection Ratio RS ≤ 10kΩ 65 85 dB
VO Output Swing VOH V+ = 30 V, RL = 2kΩ, –40°C ≤ TJ ≤ 85°C 26 V
V+ = 30 V, RL = 10kΩ, –40°C ≤ TJ ≤ 85°C 27 28
VOL V+ = 5 V, RL = 10kΩ, –40°C ≤ TJ ≤ 85°C 5 20 mV
IS Supply Current, No Load V+ = 5 V 0.430 1.15 mA
V+ = 5 V, –40°C ≤ TJ ≤ 85°C 0.7 1.2
V+ = 30 V 0.660 2.85
V+ = 30 V, –40°C ≤ TJ ≤ 85°C 1.5 3
ISOURCE Output Current Sourcing VID = +1 V, V+ = 15 V, VO = 2 V 20 40 mA
VID = +1 V, V+ = 15 V, VO = 2 V, –40°C ≤ TJ ≤ 85°C 10 20
ISINK Output Current Sinking VID = −1 V, V+ = 15 V, VO = 2 V 10 20 mA
VID = −1 V, V+ = 15 V, VO = 2 V, –40°C ≤ TJ ≤ 85°C 5 8
VID = −1 V, V+ = 15 V, VO = 0.2 V 12 100 µA
IO Output Short Circuit to Ground
(4)		 V+ = 15 V 40 85 mA
SR Slew Rate V+ = 15 V, RL = 2kΩ, VIN = 0.5 to 3 V, CL = 100pF, Unity Gain 0.4 V/µs
GBW Gain Bandwidth Product V+ = 30 V, f = 100kHz, VIN = 10 mV, RL =2kΩ, CL = 100 pF 1 MHz
φm Phase Margin 60 degrees
THD Total Harmonic Distortion f = 1kHz, AV = 20dB, RL = 2kΩ, VO = 2VPP, CL = 100 pF, V+ = 30 V 0.015%
en Equivalent Input Noise Voltage f = 1kHz, RS = 100Ω, V+ = 30 V 40 nV/√Hz
(1) VO ≅ 1.4 V, RS = 0Ω with V+ from 5 V to 30 V; and over the full input common-mode range (0 V to V+ - 1.5 V) at 25°C.
(2) The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so no loading change exists on the input lines.
(3) The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V (at 25°C). The upper end of the common-mode voltage range is V+ - 1.5 V at 25°C, but either or both inputs can go to +32 V without damage, independent of the magnitude of V+.
(4) Short circuits from the output V+ can cause excessive heating and eventual destruction. When considering short circuits to ground the maximum output current is approximately 40mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short circuits can exceed the power dissipation ratings and cause eventual destruction.

6.6 Typical Characteristics

Unless otherwise specified, VS = 5 V, single supply, TA = 25°C.
20007604.pngFigure 1. Small Signal Pulse Response
20007612.pngFigure 3. Supply Current vs. Supply Voltage
20007617.pngFigure 5. Source Current vs. Output Voltage
20007605.pngFigure 2. Large Signal Pulse Response
20007613.pngFigure 4. Sinking Current vs Output Voltage
20007614.pngFigure 6. Open Loop Frequency Response