LT2179 - 17μA Max, Quad, Single Supply, Precision Op Amps
Features
- SO Package with Standard Pinout
- Supply Current per Amplifier: 17μA Max
- Offset Voltage: 70μV Max
- Offset Current: 250pA Max
- Input Bias Current: 5nA Max
- Voltage Noise: 0.9μVP-P, 0.1Hz to 10Hz
- Current Noise: 1.5pAP-P, 0.1Hz to 10Hz
- Offset Voltage Drift: 0.5μV/°C
- Gain Bandwidth Product: 85kHz
- Slew Rate: 0.04V/μs
- Single Supply Operation
nput Voltage Range Includes Ground
Output Swings to Ground while Sinking Current
No Pull-Down Resistors Needed - Output Sources and Sinks 5mA Load Current
Typical Application
Description
The LT2178 is a micropower dual op amp in a surface mount standard 8-pin configuration, the LT2179 is a micropower quad op amp offered in a surface mount 14-pin package. Both devices are optimized for single supply operation at 5V. Specifications are also provided at ±15V supply.
The extremely low supply current is combined with true precision specifications: offset voltage is 30μV and offset current is 50pA. Both offset parameters have low drift with temperature. The 1.5pAP-P current noise and picoampere offset current permit the use the megohm level source resistors without introducing serious errors. Voltage noise, at 0.9μVP-P, is remarkably low considering the low supply current.
The LT2178/LT2179 can be operated from a single supply (as low as one lithium-cell or two NiCd batteries). The input range goes below ground. The all-NPN output stage swings to within a few millivolts of ground while sinking current. No power consuming pull down resistors are needed.
For surface mount applications where three times higher supply current is acceptable, the micropower LT1077 single, LT2078 dual and LT2079 quad are recommended. The LT1077/LT2078/LT2079 have significantly higher bandwidth, slew rate, lower voltage noise and better output drive capability. For applications requiring DIP packages refer to the LT1178/LT1179.
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 |
|---|---|---|---|---|---|
| LT2179ACS#PBF | SO-14 | S | C | 05-08-1610 (S14) | Yes |
| LT2179ACS#TRPBF | SO-14 | S | C | 05-08-1610 (S14) | Yes |
| LT2179CS#PBF | SO-14 | S | C | 05-08-1610 (S14) | Yes |
| LT2179CS#TRPBF | SO-14 | S | C | 05-08-1610 (S14) | Yes |
| LT2179IS#PBF | SO-14 | S | I | 05-08-1610 (S14) | Yes |
| LT2179IS#TRPBF | SO-14 | S | I | 05-08-1610 (S14) | 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 | |
|---|---|---|---|---|---|---|
| LT2179ACS#PBF | SO-14 | C | $11.60 | $9.60 | Yes | |
| LT2179ACS#TRPBF | SO-14 | C | $9.66 | Yes | ||
| LT2179CS#PBF | SO-14 | C | $7.65 | $6.30 | Yes | |
| LT2179CS#TRPBF | SO-14 | C | $6.36 | Yes | ||
| LT2179IS#PBF | SO-14 | I | $9.90 | $8.20 | Yes | |
| LT2179IS#TRPBF | SO-14 | I | $8.26 | 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.Click here to view our complete list of demo boards
Applications
- Battery- or Solar-Powered Systems
Portable Instrumentation
Remote Sensor Amplifier
Satellite Circuitry - Micropower Sample-and-Hold
- Thermocouple Amplifier
- Micropower Filters
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LT2179
LT2179A
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.
