LT1166
LT1166
PRODUCTIONPower Output Stage Automatic Bias System
- Part Models
- 3
- 1ku List Price
- Starting From $3.73
Viewing:
Overview
- Set Class AB Bias Currents
- Eliminates Adjustments
- Eliminates Thermal Runaway of IQ
- Corrects for Device Mismatch
- Simplifies Heat Sinking
- Programmable Current Limit
- May Be Paralleled for Higher Current
- Small SO-8 or PDIP Package paralleled to obtain higher output current.
The LT1166 is a bias generating system for controlling class AB output current in high powered amplifiers. When connected with external transistors, the circuit becomes a unity-gain voltage follower. The LT1166 is ideally suited for driving power MOSFET devices because it eliminates all quiescent current adjustments and critical transistor matching. Multiple output stages using the LT1166 can be paralleled to obtain higher output current.
Thermal runaway of the quiescent point is eliminated because the bias system senses the current in each power transistor by using a small external sense resistor. A high speed regulator loop controls the amount of drive applied to each power device. The LT1166 can be biased from a pair of resistors or current sources and because it operates on the drive voltage to the output transistors, it operates on any supply voltage.
Applications
- Biasing Power MOSFETs
- High Voltage Amplifiers
- Shaker Table Amplifiers
- Audio Power Amplifiers
Documentation
Data Sheet 1
Design Note 1
Technical Articles 2
Spec Notice 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1166CN8#PBF | 8-Lead PDIP (Narrow 0.3 Inch) | ||
| LT1166CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LT1166CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 8, 2024 - 24_0234 Migrating Bottom Trace Code Marking to Top Side Laser Marking for PDIP Package |
||
| LT1166CN8#PBF | PRODUCTION | |
|
Oct 11, 2022 - 22_0241 Epoxy Change from Henkel 8290 to 8290A for PDIP Package |
||
| LT1166CN8#PBF | PRODUCTION | |
|
Aug 6, 2022 - 22_0172 Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG] |
||
| LT1166CN8#PBF | PRODUCTION | |
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LT1166CS8#PBF | PRODUCTION | |
| LT1166CS8#TRPBF | PRODUCTION | |
|
Jun 11, 2021 - 21_0060 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LT1166CS8#PBF | PRODUCTION | |
| LT1166CS8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LT1166
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.