LT1178 - 17µA Max, Dual, Single Supply, Precision Op Amps
Features
- 17µA Max Supply Current per Amplifier
- 70µV Max Offset Voltage
- 250pA Max Offset Current
- 5nA Max Input Bias Current
- 0.9µVp-p 0.1Hz to 10Hz Voltage Noise
- 1.5pAp-p 0.1Hz to 10Hz Current Noise
- 0.5µV/°C Offset Voltage Drift
- 85kHz Gain-Bandwidth-Product
- 0.04V/µs Slew Rate
- Single Supply Operation
- Input Voltage Range Includes Ground
- Output Swings to Ground while Sinking Current
- No Pull Down Resistors are Needed
- Output Sources and Sinks 5mA Load Current
Typical Application
Description
The LT®1178 is a micropower dual op amp in the standard 8-pin configuration; the LT1179 is a micropower quad op amp offered in the standard 14-pin packages. Both devices are optimized for single supply operation at 5V. Specifications are also provided at ±15V supplies.
The extremely low supply current is combined with true precision specifications: offset voltage is 30µV, offset currentis 50pA. Both offset parameters have low drift with temperature. The 1.5pAp-p current noise and picoampere offset current permit the use of megaohm level source resistors without introducing serious errors. Voltage noise, at 0.9µVp-p, is remarkably low considering the low supply current.
Both the LT1178 and LT1179 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 applications where three times higher supply current is acceptable, the micropower LT1077 single, LT1078 dual and LT1079 quad are recommended. The LT1077/78/79 have significantly higher bandwidth, slew rate, lower voltage noise and better output drive capability.
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 |
|---|---|---|---|---|---|
| LT1178ACN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LT1178CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LT1178IN8#PBF | N-8 | N | I | 05-08-1510 (N8) | Yes |
| LT1178S8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1178S8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1178SW#PBF | SW-16 | SW | C | 05-08-1620 (SW16) | Yes |
| LT1178SW#TRPBF | SW-16 | SW | C | 05-08-1620 (SW16) | 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 | |
|---|---|---|---|---|---|---|
| LT1178ACN8#PBF | N-8 | C | $6.67 | $5.40 | Yes | |
| LT1178CN8#PBF | N-8 | C | $3.67 | $2.95 | Yes | |
| LT1178IN8#PBF | N-8 | I | $4.58 | $3.75 | Yes | |
| LT1178S8#PBF | SO-8 | C | $4.65 | $3.75 | Yes | |
| LT1178S8#TRPBF | SO-8 | C | $3.81 | Yes | ||
| LT1178SW#PBF | SW-16 | C | $4.92 | $4.10 | Yes | |
| LT1178SW#TRPBF | SW-16 | C | $4.16 | 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:
LT1178
LT1178A
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.
