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Product Detailed Parameters
- Description：IC VOLTAGE FEEDBACK 2 CIRC 8MSOP
- Series：-
- Mfr：Fairchild Semiconductor
- Package：Bulk
- Amplifier Type：Voltage Feedback
- Number of Circuits：2
- Output Type：Rail-to-Rail
- Slew Rate：9V/µs
- Gain Bandwidth Product：2 MHz
- Current - Input Bias：90 nA
- Voltage - Input Offset：1.5 mV
- Current - Supply：160µA (x2 Channels)
- Current - Output / Channel：30 mA
- Voltage - Supply Span (Min)：2.5 V
- Voltage - Supply Span (Max)：5.5 V
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-MSOP
- -3db Bandwidth：4.3 MHz
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Overview
The KM4270IM8TR3 is a dual, low-cost, voltage feedback operational amplifier from the KM4X70 family manufactured by Fairchild Semiconductor. It operates within a supply voltage range of 2.5V to 5.5V (±1.25V to ±2.75V). At 5V, each amplifier draws 160µA of supply current. Key electrical parameters include a bandwidth of 4.9MHz, a slew rate of 5.3V/µs, and an output current capability of 16mA. The input voltage range exceeds both the negative and positive rails by more than 250mV. The device features rail-to-rail I/O capabilities, with the output swinging to within 20mV of either rail.
Feature Summary
- Ultra-low cost design suitable for budget-sensitive applications
- Rail-to-rail input and output operation for maximum dynamic range
- Input voltage range extends beyond the power supply rails
- Low power consumption with 160µA per amplifier at 5V
Applications
- Portable and battery-powered devices
- PCMCIA and USB interface circuits
- Mobile communications equipment including cellular phones and pagers
- Notebooks and Personal Digital Assistants (PDAs)
- Sensor interfaces and A/D buffers
Procurement Notes
Verify that the specific suffix IM8TR3 corresponds to the SOIC-8 tape and reel packaging configuration as documented in the official datasheet. Confirm the manufacturer origin is Fairchild Semiconductor or its authorized successor entity. Ensure the component meets the required operating temperature specifications for the intended application environment before procurement.
Selection Notes
Select this component when a dual op-amp with rail-to-rail performance is required in a compact SOIC-8 package. It serves as a direct replacement for parts such as the MAX4126, OPA2340, LMV822, and TLV2462 in single-supply designs. Consider its 4.9MHz bandwidth and 16mA output drive for signal conditioning tasks where moderate speed and load driving are necessary.
Part Context
The KM4270IM8TR3 belongs to the KM4X70 series of ultra-low cost, low-power voltage feedback amplifiers. This family includes the single-channel KM4170 and quad-channel KM4470 variants. The KM4270 specifically provides two amplifiers in one package, offering a space-efficient solution for multi-channel signal processing in portable electronics and consumer devices.
Replacement Considerations
Officially documented direct replacements include the MAX4126, OPA2340, LMV822, and TLV2462 for single-supply applications. Verify pinout compatibility and electrical parameter alignment with these equivalents before substitution.
