SNOS515F October 2000 – August 2015 LM8272
PRODUCTION DATA.
- 1Features
- 2Applications
- 3Description
- 4Revision History
- 5Pin Configuration and Functions
- 6Specifications
-
7Application and Implementation
- 7.1 Block Diagram and Operational Description A) Input Stage:
- 7.2 B) Output Stage:
- 7.3 C) Output Voltage Swing Close to V−:
- 7.4 Driving Capactive Loads:
- 7.5 Estimating the Output Voltage Swing
- 7.6 Output Short Circuit Current and Dissipation Issues:
- 7.7 Other Application Hints:
- 7.8 LM8272 Advantages:
- 8Device and Documentation Support
- 9Mechanical, Packaging, and Orderable Information
1 Features
- GBWP 15MHz
- Wide supply voltage range 2.5 V to 24 V
- Slew rate 15 V/µs
- Supply current/channel 0.95 mA
- Cap load tolerance Unlimited
- Output short circuit current ±13 0mA
- Output current (1 V from rails) ±65 mA
- Input common mode voltage 0.3 V beyond rails
- Input voltage noise 15 nV/√Hz
- Input current noise 1.4 pA/√Hz
(VS = 12V, TA = 25°C, Typical values unless specified).
2 Applications
- TFT‐LCD flat panel VCOM driver
- A/D converter buffer
- High side/low side sensing
- Headphone amplifier
3 Description
The LM8272 is a Rail-to-Rail input and output Op Amp which can operate with a wide supply voltage range. This device has high output current drive, greater than Rail-to-Rail input common mode voltage range, and unlimited capacitive load drive capability, while requiring only 0.95mA/channel supply current. It is specifically designed to handle the requirements of flat panel TFT panel VCOM driver applications as well as being suitable for other low power and medium speed applications which require ease of use and enhanced performance over existing devices.
Greater than Rail-to-Rail input common mode voltage range with 50 dB of Common Mode Rejection allows high side and low side sensing among many applications without concerns for exceeding the range and with no compromise in accuracy. An exceptionally wide operating supply voltage range of 2.5 V to 24 V removes any concerns over functionality under extreme conditions and offers flexibility of use in multitude of applications. In addition, most device parameters are insensitive to power supply variations. This design enhancement is yet another step in simplifying its usage.
The LM8272 is offered in the 8-pin VSSOP package.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM8272 | VSSOP (8) | 3.00 mm × 3.00 mm |
- For all available packages, see the orderable addendum at the end of the datasheet.
Simplified Schematic
Large Signal Step Response
for Various Cap. Load
