LT1792 - Low Noise, Precision, JFET Input Op Amp
Datasheet 
DocumentationDatasheet
Design Note
Reliability Data
LT Journal
- Sep 1999 Four New Amplifiers Serve Many Applications
- September 1999 - JFET Op Amps Equal Low Noise Bipolars and Have Picoamp Current Noise
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Features
- 100% Tested Low Voltage Noise: 6nV/rtHz Max
- A Grade 100% Temperature Tested
- Voltage Gain: 1.2 Million Min
- Offset Voltage Over Temp: 800µV Max
- Gain-Bandwidth Product: 5.6MHz Typ
- Guaranteed Specifications with ±5V Supplies
Typical Application
Description
The LT®1792 achieves a new standard of excellence in noise performance for a JFET op amp. The 4.2nV/rtHz voltage noise combined with low current noise and picoampere bias currents make the LT1792 an ideal choice for amplifying low level signals from high impedance capacitive transducers. The LT1792 is unconditionally stable for gains of 1 or more, even with load capacitances up to 1000pF. Other key features are 600µV VOS and a voltage gain of over 4 million. Each individual amplifier is 100% tested for voltage noise, slew rate and gain bandwidth. The design of the LT1792 has been optimized to achieve true precision performance with an industry standard pinout in the SO-8 package. Specifications are also provided for ±5V supplies.N-8,SO-8
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LT1792ACN8#PBF | PDIP | 8 | C | $3.95 | $3.35 |
| LT1792ACS8#PBF | SO | 8 | C | $3.95 | $3.35 |
| LT1792ACS8#TRPBF | SO | 8 | C | $3.41 | |
| LT1792AIN8#PBF | PDIP | 8 | I | $5.00 | $4.25 |
| LT1792AIS8#PBF | SO | 8 | I | $5.00 | $4.25 |
| LT1792AIS8#TRPBF | SO | 8 | I | $4.31 | |
| LT1792CN8#PBF | PDIP | 8 | C | $2.75 | $2.25 |
| LT1792CS8#PBF | SO | 8 | C | $2.75 | $2.25 |
| LT1792CS8#TRPBF | SO | 8 | C | $2.31 | |
| LT1792IN8#PBF | PDIP | 8 | I | $3.80 | $3.15 |
| LT1792IS8#PBF | SO | 8 | I | $3.80 | $3.15 |
| LT1792IS8#TRPBF | SO | 8 | I | $3.21 | |
| LT1792ACN8 | PDIP | 8 | C | $7.90 | $6.70 |
| LT1792ACS8 | SO | 8 | C | $7.90 | $6.70 |
| LT1792ACS8#TR | SO | 8 | C | $6.82 | |
| LT1792AIN8 | PDIP | 8 | I | $10.00 | $8.50 |
| LT1792AIS8 | SO | 8 | I | $10.00 | $8.50 |
| LT1792AIS8#TR | SO | 8 | I | $8.62 | |
| LT1792CN8 | PDIP | 8 | C | $5.50 | $4.50 |
| LT1792CS8 | SO | 8 | C | $5.50 | $4.50 |
| LT1792CS8#TR | SO | 8 | C | $4.62 | |
| LT1792IN8 | PDIP | 8 | I | $7.60 | $6.30 |
| LT1792IS8 | SO | 8 | I | $7.60 | $6.30 |
| LT1792IS8#TR | SO | 8 | I | $6.42 |
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 |