LT1809CS6#TRMPBF Analog Devices Integrated Circuit (SOT23 (6-Pin)) In Stock
LT1809CS6#TRMPBF is a high-speed, rail-to-rail input/output operational amplifier from Analog Devices with low distortion, 86 dB typical CMRR, and 8 µA maximum bias current at 25°C. It is housed in a 6-pin SOT-23 package for space-constrained signal conditioning designs. Available in tape-and-reel with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- LT1809CS6#TRMPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.7273(MOQ 64)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LT1809CS6#TRMPBF?
- Rail-to-rail input and output swing enabling full supply range utilization in single-supply 3.3 V and 5 V signal chains
- 86 dB typical common-mode rejection ratio (CMRR) with 68 dB minimum, ensuring high noise immunity in precision analog applications
- Low input bias current of 8 µA max at 25°C reducing offset errors in high-impedance sensor and transducer interfaces
- Voltage-feedback architecture with internal frequency compensation for stability across a wide range of capacitive loads
- Compact 6-pin SOT-23 package enabling high-density amplifier placement in portable and space-constrained PCB designs
What is LT1809CS6#TRMPBF used for?
The LT1809CS6#TRMPBF is used in high-speed signal conditioning circuits such as ADC input buffers, active filters, and wideband gain stages where rail-to-rail swing at 3.3 V or 5 V supply is required with minimal output clipping. Its 86 dB CMRR and 8 µA bias current make it well suited for precision instrumentation front-ends, load cell amplifiers, and photodiode transimpedance amplifiers in medical diagnostic and portable test equipment. Communications and industrial data acquisition systems also use this op-amp as a single-supply buffer between sensor bridges and 12-bit or 16-bit ADCs, taking advantage of its full output swing to maximize dynamic range.
What are the specifications of LT1809CS6#TRMPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1636 |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 12.5 µA |
| Bias Current-Max (IIB) @25C | 8 µA |
| Common-mode Reject Ratio-Min | 68dB |
| Common-mode Reject Ratio-Nom | 86dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 3750 µV |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -6.3 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 140V/us |
| Slew Rate-Nom | 300V/us |
| Supply Current-Max | 25mA |
| Supply Voltage Limit-Max | 6.3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 170000 |
| Voltage Gain-Min | 80000 |
| Wideband | YES |
| Package | SOT23 (6-Pin) |
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 |
Where can I find the LT1809CS6#TRMPBF datasheet?
LT1809CS6#TRMPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LT1809CS6#TRMPBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input bias current of LT1809CS6#TRMPBF, and why does it matter for high-impedance sensor interfaces?
The LT1809CS6#TRMPBF has a maximum input bias current of 8 µA at 25°C and an average maximum of 12.5 µA over temperature. For a 100 kΩ source impedance, this 8 µA bias current generates up to 800 mV of offset error at the amplifier input, so high-impedance sensor designs such as pH electrodes or piezoelectric pickups must use source impedances well below 10 kΩ or add input bias current cancellation resistors to maintain millivolt-level accuracy.
What CMRR does LT1809CS6#TRMPBF provide, and how does it benefit single-supply differential measurements?
The LT1809CS6#TRMPBF specifies a minimum CMRR of 68 dB and a typical CMRR of 86 dB across the common-mode input range. In a single-supply 3.3 V or 5 V differential measurement circuit, 86 dB CMRR means a 1 V common-mode noise signal on both inputs is suppressed to below 50 µV at the output, making this amplifier suitable for bridge sensor and current-sense applications where ground noise or power supply ripple would otherwise corrupt the differential signal.
What package does LT1809CS6#TRMPBF use, and what does the TRMPBF suffix mean?
The LT1809CS6#TRMPBF is packaged in a 6-pin SOT-23 with 0.95 mm lead pitch, a very compact footprint measuring approximately 2.9 x 1.6 mm. The TRMPBF suffix indicates tape-and-reel (TR) packaging for automated SMT assembly and MPBF (Maximum Pb-Free, lead-free) construction. Note that the datasheet Pbfree Code is listed as No, so buyers should verify current RoHS compliance status with the distributor before use in EU-regulated products.
For which filter topologies is LT1809CS6#TRMPBF well suited in active filter designs?
The LT1809CS6#TRMPBF's voltage-feedback architecture with internal frequency compensation makes it suitable for Sallen-Key and multiple-feedback (MFB) low-pass and band-pass filter topologies operating at cutoff frequencies up to several hundred kHz on a 5 V supply. Its rail-to-rail output swing ensures the full filter passband amplitude is preserved without clipping at the output stage, and the 6-pin SOT-23 package enables 2-pole active filters to be built in under 25 mm2 of board space when combined with 0402 passive components.
What is the YTEOL for LT1809CS6#TRMPBF, and how should procurement plan for its longevity?
The LT1809CS6#TRMPBF has a 10-year YTEOL (Years To End Of Life), indicating a reasonable supply horizon. Procurement teams designing products with 5-to-7-year production runs can proceed with confidence, but should monitor Analog Devices' product lifecycle notifications annually and plan a last-time-buy buffer of 12 to 24 months of inventory as the YTEOL window approaches to avoid costly redesigns or spot-market premiums.
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About Analog Devices
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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