SNOSBH4E May   1998  – October 2015 LM10

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 Recommended Operating Conditions
    3. 6.3 Thermal Information
    4. 6.4 Electrical Characteristics LM10/LM10B
    5. 6.5 Electrical Characteristics, LM10C
    6. 6.6 Electrical Characteristics, LM10BL
    7. 6.7 Electrical Characteristics, LM10CL
    8. 6.8 Typical Characteristics
      1. 6.8.1 Typical Characteristics (Op Amp)
      2. 6.8.2 Typical Characteristics (Reference)
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operating Characteristics
      2. 7.3.2 Common-Mode Voltage Range
      3. 7.3.3 Operational Amplifier
      4. 7.3.4 Voltage Reference
    4. 7.4 Device Functional Modes
      1. 7.4.1 Floating Mode
      2. 7.4.2 Linear Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 Operational Amplifier Offset Adjustment
      2. 8.3.2 Positive Regulators
      3. 8.3.3 Reference and Internal Regulator
  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 Device Support
      1. 11.1.1 Device Nomenclature
        1. 11.1.1.1 Definition of Terms
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ

8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

8.1 Application Information

With heavy amplifier loading to V−, resistance drops in the V− lead can adversely affect reference regulation. Lead resistance can approach 1 Ω. Therefore, the common to the reference circuitry should be connected as close as possible to the package.

8.2 Typical Application

LM10 00720011.png
* required for capacitive loading
Figure 36. Shunt Voltage Regulator

8.2.1 Design Requirements

Table 1 lists the design parameters for this example.

Table 1. Design Parameters

DESIGN PARAMETERS EXAMPLE VALUE
Ambient Temperature Range –55⁰C to 125⁰C
Supply Voltage Range 1.2 V to 40 V
Common-Mode Input Range (V–) to (V+) – 0.85 V

8.2.2 Detailed Design Procedure

Given that the transfer function of this circuit is:

Equation 1. LM10 eq_1_SNOSBH4.gif

the output can be set between 0.2 V and the breakdown voltage of the IC by selecting an appropriate value for R2. The circuit regulates for input voltages within a saturation drop of the output (typically 0.4 V at 20 mA and 0.15 V at 5 mA). The regulator is protected from shorts or overloads by current limiting and thermal shutdown.

Typical regulation is about 0.05% load and 0.003%/V line. A substantial improvement in regulation can be effected by connecting the operational amplifier as a follower and setting the reference to the desired output voltage. This has the disadvantage that the minimum input-output differential is increased to a little more than a diode drop. If the operational amplifier were connected for a gain of 2, the output could again saturate. But this requires an additional pair of precision resistors.

The regulator in Figure 36 could be made adjustable to zero by connecting the operational amplifier to a potentiometer on the reference output. This has the disadvantage that the regulation at the lower voltage settings is not as good as it might otherwise be.

8.2.3 Application Curve

LM10 00565230.png Figure 37. Frequency Response

8.3 System Examples

Circuit descriptions available in application note AN-211 (SNOA638).

8.3.1 Operational Amplifier Offset Adjustment

(Pin numbers are for 8-pin packages)
LM10 00565251.png Figure 38. Standard
LM10 00565253.png Figure 40. Limited Range With Boosted Reference
LM10 00565252.png Figure 39. Limited Range

8.3.2 Positive Regulators

(Pin numbers are for 8-pin packages)
LM10 00565254.png Figure 41. Low Voltage
LM10 00565256.png
Use only electrolytic output capacitors.
Figure 43. Zero Output
LM10 00565258.png
Required For Capacitive Loading
Figure 45. Shunt Regulator
LM10 00565260.png Figure 47. Precision Regulator
LM10 00565262.png
LM10 00565284.png
Figure 49. HV Regulator
LM10 00565264.png
*800°C Threshold Is Established By Connecting Balance To VREF.
Figure 51. Flame Detector
LM10 00565266.png Figure 53. Remote Amplifier
LM10 00565268.png Figure 55. Transmitter for Bridge Sensor
LM10 00565270.png Figure 57. Resistance Thermometer Transmitter
LM10 00565272.png
200°C≤Tp≤700°C
1 mA≤IOUT≤5 mA
†Gain Trim
Figure 59. Thermocouple
Transmitter
LM10 00565274.png Figure 61. Battery-level Indicator
LM10 00565276.png
Flashes Above 1.2V

Rate Increases With

Voltage
Figure 63. Single-cell Voltage Monitor
LM10 00565278.png
  INPUT

10 mV, 100nA

FULL-SCALE
Figure 65. Meter Amplifier
LM10 00565280.png
1≤λ/λ0≤105
Figure 67. Light Meter
LM10 00565282.png
†Controls “Loop Gain”

*Optional Frequency Shaping
Figure 69. Isolated Voltage Sensor
LM10 00565255.png Figure 42. Best Regulation
LM10 00565257.png Figure 44. Current Regulator
LM10 00565259.png
*Electrolytic
Figure 46. Negative Regulator
LM10 00565261.png
*VOUT=10−4 R3
Figure 48. Laboratory Power Supply
LM10 00565263.png Figure 50. Protected HV Regulator
LM10 00565265.png
*Provides Hysteresis
Figure 52. Light Level Sensor
LM10 00565267.png Figure 54. Remote Thermocouple Amplifier
LM10 00565269.png
10 mA≤IOUT≤50 mA

500°C≤TP≤1500°C

*Gain Trim
Figure 56. Precision Thermocouple Transmitter
LM10 00565271.png
††Level-shift Trim
 *Scale Factor Trim
 †Copper Wire Wound
LM10 00565285.png
Figure 58. Optical Pyrometer
LM10 00565273.png
1 mA≤IOUT≤5 mA

‡50 μA≤ID≤500 μA

††Center Scale Trim

†Scale Factor Trim

*Copper Wire Wound
Figure 60. Logarithmic Light Sensor
LM10 00565275.png Figure 62. Battery-threshold Indicator
LM10 00565277.png
Flash Rate Increases

Above 6V and Below 15V
Figure 64. Double-ended Voltage Monitor
LM10 00565279.png
*Trim For Span

†Trim For Zero
Figure 66. Thermometer
LM10 00565281.png
ZOUT∼680Ω @ 5 kHz

AV≤1k

f1∼100 Hz

f2∼5 kHz

RL∼500

*Max Gain Trim
Figure 68. Microphone Amplifier
LM10 00565283.png Figure 70. Light-Level Controller

8.3.3 Reference and Internal Regulator

LM10 00565214.png Figure 71. Reference and Internal Regulator