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    The SGM8604-1 (single), SGM8604-3 (single with shutdown), SGM8604-2 (dual) and SGM8604-5 (dual with shutdown) high output drive CMOS operational amplifiers feature a peak output current of 232mA, rail-to-rail output capability from a single 2.7V to 5.5V supply. These amplifiers exhibit a high slew rate of 7V/μs and a gain-bandwidth product (GBP) of 15MHz. The SGM8604-1/2/3/5 can drive typical headset levels (32Ω), as well as bias an RF power amplifier in wireless handset applications.

    These operational amplifiers are designed to be part of the power amplifier control circuitry, biasing RF power amplifiers in wireless headsets. The SGM8604-3/5 offer a shutdown feature that drives the output low. This ensures that the RF power amplifier is fully disabled when needed, preventing unconverted signals to the RF antenna.

    The SGM8604-1/2/3/5 offer low input offset voltage, low input offset voltage drift, wide bandwidth and high output drive.

    The SGM8604-1/3 are available in a Green UTDFN-1.45×1-6L package. The SGM8604-2 is available in a Green TDFN-2×3-8AL package. The SGM8604-5 is available in a Green TDFN-3×3-10L package. They operate over an ambient temperature range of -40 to +125.



    • 232mA Output Drive Capability

    • Rail-to-Rail Output

    • Low Input Offset Voltage: 10μV (MAX)

    • Low Input Offset Voltage Drift: 17nV/ (TYP)

    • Low Noise: 22nV/√Hz at 1kHz

    • Over-Temperature Protection

    • Supply Voltage Range: 2.7V to 5.5V

    • Quiescent Supply Current:

        1.2mA/Amplifier (TYP)

        0.1μA Shutdown Current (TYP)

    • Gain-Bandwidth Product: 15MHz

    • High Slew Rate: 7V/μs

    • Voltage Gain (RL = 2kΩ): 145dB

    • Power Supply Rejection Ratio: 127dB

    • No Phase Reversal for Overdriven Inputs

    • Available in a Green TDFN-3×3-10L Package


    RF Power Amplifier Biasing Controls

    Portable/Battery-Powered Audio Applications

    Portable Headphone Speaker Drivers (32Ω)

    Audio Hands-Free Car Phones (Kits)

    Laptop/Notebook Computers/TFT Panels

    Sound Ports/Cards

    Set-Top Boxes

    Digital-to-Analog Converter Buffers

    Transformer/Line Drivers

    Motor Drivers

    Part NumberStatusPackagePinsPb-FreeTemp Range
    SGM8604-5XTD10G/TRProductionTDFN-3×3-10L10Y-40℃ to +125℃