Features and Benefits
- Guaranteed Operation at 1.2V
- Op Amp and Reference on Single Chip
- Micropower: 130µA Supply Current
- Industrial Temperature Range SO-8 Packages
- Rail-to-Rail Output
- High Output Current: 20mA Min
- Output Drives 1000pF
- Capable of Floating Mode Operation
- Specified for 5V and ±5V Supplies
- Low Reference Drift: 30ppm/°C
- Industry Standard LM10 Pinout
The LT1635 is a new analog building block that includes a rail-to-rail output op amp, a precision reference and reference buffer. The device operates from supplies as low as a single 1.2V or up to ±5V, yet it consumes only 130µA of supply current.
The input common mode range of the op amp includes ground and incorporates phase reversal protection to prevent false outputs from occurring when the input is below the negative supply. The rail-to-rail output stage can swing to within 15mV of each rail with no load and can swing to within 250mV of each rail while delivering 10mA of output current. The gain bandwidth of the op amp is 175kHz and it is unity-gain stable with up to 1000pF load capacitance.
The 0.2V reference is referred to V– and includes a buffer amplifier to enhance flexibility. The reference and buffer combine to achieve a drift of 30ppm/°C, a line regulation of 20ppm/V and a load regulation of 150ppm/mA.
The LT1635 is available in 8-pin PDIP and SO packages, and has the industry standard LM10 pinout.
- Battery- or Solar-Powered Systems
- Portable Instrumentation
- Sensor Conditioning
- Precision Current Regulators
- Precision Voltage Regulators
- Battery Level Indicator
- Thermocouple Transmitter
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
R334 Reliability Data3/22/2018
AN118 - High Voltage, Low Noise, DC/DC Converters6/17/2015
AN90 - Current Sources for Fiber Optic Lasers: A Compendium of Pleasant Current Events8/20/2007
AN84 - Linear Technology Magazine Circuit Collection, Volume IV8/20/2007
AN-105: Current Sense Circuit Collection Making Sense of Current12/1/2005
DC417B - Demo Manual2/1/2012
Building a Homebrew Load Box8/21/2013
Unique Analog Multiplier Continuously Monitors Instantaneous Power and Simplifies Design of Power Control Loops7/1/2010 LT Journal
New Rail-to-Rail Output Op Amps Bring Precision Performance to Low Voltage Systems5/1/2000 LT Journal
Micropower, Precision Current Sense Amplifier Operates from 2.5V to 60V9/1/1999 LT Journal
Tools & Simulations
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.
Models for the following parts are available in LTspice:
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LT1635CN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LT1635CS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LT1635CS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LT1635IN8#PBF||Material Declaration||Reliability Data||8-Lead PDIP (Narrow 0.3 Inch)|
|LT1635IS8#PBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|LT1635IS8#TRPBF||Material Declaration||Reliability Data||8-Lead SOIC (Narrow 0.15 Inch)|
|Wafer Fabrication Data||R334 Reliability Data|
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Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.