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Product Detailed Parameters
- Description：JFET 2N-CH 60V SOT23-6
- Series：LS845
- Mfr：Linear Integrated Systems, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：2 N-Channel (Dual)
- Voltage - Breakdown (V(BR)GSS)：60 V
- Drain to Source Voltage (Vdss)：-
- Current - Drain (Idss) @ Vds (Vgs=0)：1.5 mA @ 15 V
- Current Drain (Id) - Max：-
- Voltage - Cutoff (VGS off) @ Id：1 V @ 1 nA
- Input Capacitance (Ciss) (Max) @ Vds：8pF @ 15V
- Resistance - RDS(On)：-
- Power - Max：400 mW
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SOT-23-6
- Supplier Device Package：SOT-23-6
- Grade：-
- Qualification：-
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Overview
The LS845 SOT-23 6L is a low-noise, monolithic dual N-channel JFET amplifier from the LS844 series. It features an ultra-low input capacitance of 8 pF maximum and a typical noise density of 3.0 nV/√Hz at 1 kHz. The device offers a maximum offset voltage of 15 mV and a drift of 25 µV/°C over the -55°C to +125°C range. With a breakdown voltage of 60 V and a transconductance of 1000 µS typical, it supports high-speed applications requiring tight differential matching.
Feature Summary
- Ultra-low input capacitance reduces intermodulation distortion
- Monolithic construction ensures excellent thermal tracking and matching
- Low gate leakage current minimizes input error
- High common-mode rejection ratio for precision signal processing
Applications
- Wideband differential amplifiers
- High-speed temperature compensated single-ended input amplifiers
- High-speed comparators
- Impedance converters
- Acoustic sensors and hydrophones
Procurement Notes
Verify the specific suffix indicates the SOT-23 6L package configuration. Confirm RoHS compliance status if required by your manufacturing standards. Ensure the ordering code matches the LS845 variant with the specified 15 mV offset voltage limit rather than the lower offset LS843 or LS844 options.
Selection Notes
Select this component when minimizing input capacitance is critical for reducing distortion in wideband circuits. The LS845 provides a balance of moderate offset voltage (15 mV max) and low noise. Consider the LS843 or LS844 variants if tighter offset specifications are required, while maintaining the same low-capacitance package and performance profile.
Part Context
Part of the LS844 Series, which includes LS843, LS844, and LS845 variants differentiated primarily by offset voltage and drift specifications. The series utilizes interleaved JFETs on a single silicon piece for superior matching compared to discrete components. Available in multiple packages including SOIC-8, PDIP-8, TO-71, and TO-78.
Replacement Considerations
LSK389 is referenced as a comparable product but has significantly higher gate-to-drain capacitance (25 pF vs 4 pF typical). No direct pin-compatible replacement is explicitly listed for the SOT-23 6L package in the provided documentation.
