LT1793AIN8#PBF Analog Devices Integrated Circuit (Dual-In-Line Packages) In Stock
LT1793AIN8#PBF is a single general-purpose op-amp in an 8-pin PDIP package rated to ±20 V supply. Features 10 pA bias current, 99 dB CMRR, and 78 dB minimum CMRR for precision signal conditioning. From $3.50 in stock worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LT1793AIN8#PBF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 10 pA input bias current at 25°C enabling high-impedance sensor interfaces without significant offset error from source resistance
- 99 dB typical CMRR with 78 dB minimum specification ensuring superior common-mode noise rejection in differential measurement circuits
- ±20 V dual-supply operation in industry-standard 8-pin PDIP package allowing direct drop-in to existing through-hole precision amplifier designs
Applications
LT1793AIN8#PBF is suited for precision instrumentation and data-acquisition front ends where input bias current must stay below 1 nA across the full temperature range to avoid errors across megohm source impedances. Photodiode transimpedance amplifiers in optical power meters and spectrometers benefit from its 10 pA bias current and wide ±20 V supply swing. pH electrode buffers and electrochemical sensor interfaces also rely on its JFET input stage to present high enough input impedance that electrode loading remains negligible over extended measurement periods.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1510 (N8) |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0024 µA |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 78dB |
| Common-mode Reject Ratio-Nom | 99dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 1300 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -20 V |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 2.1V/us |
| Slew Rate-Nom | 3.2V/us |
| Supply Current-Max | 5.4mA |
| Supply Voltage Limit-Max | 20V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 3100 |
| Voltage Gain-Min | 850000 |
| Wideband | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input bias current of LT1793AIN8#PBF and why does it matter for high-impedance sensor circuits?
LT1793AIN8#PBF has a maximum input bias current of 0.0024 µA at 25°C and a typical value of 0.00001 µA (10 pA). For a 10 MΩ source resistance, a 10 pA bias current creates only 100 µV offset, making it suitable for photodiode, pH electrode, and piezoelectric sensor front ends that cannot tolerate millivolt-level input errors.
What supply voltage range does LT1793AIN8#PBF support and what output swing can it achieve?
LT1793AIN8#PBF operates on supply voltages from ±1 V to ±20 V (2 V to 40 V total supply). At a ±15 V supply with a 2 kΩ load, the output swings within approximately 1 V of each rail, giving a usable output range of ±14 V, which covers most industrial 4-20 mA transmitter and ±10 V analog output signal chain requirements.
How does the 99 dB CMRR of LT1793AIN8#PBF compare with standard op-amps in a differential ECG front end?
Standard general-purpose op-amps typically specify 70 dB to 80 dB CMRR, while LT1793AIN8#PBF achieves 99 dB typical and 78 dB minimum across the operating range. In a 3-electrode ECG front end where 50 Hz power-line interference at 1 V common-mode must be attenuated to under 10 µV referred to input, the 99 dB CMRR provides more than 40 dB of margin over the 60 dB attenuation needed.
When is LT1793AIN8#PBF a cost-effective alternative to LT1012 in a through-hole prototype board?
LT1793AIN8#PBF uses the same 8-pin PDIP footprint as LT1012 and provides comparable ultra-low bias current performance at a lower unit cost in small quantities. When the application needs sub-100 pA bias current and 99 dB CMRR in a PDIP-8 package for bench prototyping or low-volume production, LT1793AIN8#PBF is the direct lower-cost substitute without any PCB changes.
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Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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