LT1635 - Micropower Rail-to-Rail Op Amp and Reference
Features
- 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
Typical Application
Description
The LT1635 is a new analog building block that includes a rail-to-rail output opamp,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 SOpackages,and has the industry standard LM10 pinout.
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT1635CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LT1635CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1635CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1635IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LT1635IS8#PBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
| LT1635IS8#TRPBF | SO-8 | S8 | I | 05-08-1610 (S8) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT1635CN8#PBF | N-8 | C | $2.15 | $1.75 | Yes | |
| LT1635CS8#PBF | SO-8 | C | $2.40 | $1.95 | Yes | |
| LT1635CS8#TRPBF | SO-8 | C | $2.01 | Yes | ||
| LT1635IN8#PBF | N-8 | I | $2.65 | $2.15 | Yes | |
| LT1635IS8#PBF | SO-8 | I | $3.00 | $2.40 | Yes | |
| LT1635IS8#TRPBF | SO-8 | I | $2.46 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC417B | DIP8, MS8, S8, SOT23-6 | Multi-Footprint General Purpose Board for Single Op. Amp | $25.00 | |
| Buy Now | |||
Applications
- Battery- or Solar-Powered Systems Portable Instrumentation Sensor Conditioning
- Precision Current Regulators
- Precision Voltage Regulators
- Battery Level Indicator
- Thermocouple Transmitter
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Design Tools
LTspice
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Models for the following parts are available in LTspice:
LT1635
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
