The LMH5401 device is a very high-performance, differential amplifier optimized for radio frequency (RF), intermediate frequency (IF), or high-speed, dc-coupled, time-domain applications. The device is ideal for dc- or ac-coupled applications that may require a single-ended-to-differential (SE-DE) conversion when driving an analog-to-digital converter (ADC). The LMH5401 generates very low levels of second- and third-order distortion when operating in SE-DE or differential-to-differential (DE-DE) mode.
The amplifier is optimized for use in both SE-DE and DE-DE systems. The device has unprecedented usable bandwidth from dc to 2 GHz. The LMH5401 can be used for SE-DE conversions in the signal chain without external baluns in a wide range of applications such as test and measurement, broadband communications, and high-speed data acquisition.
A common-mode reference input pin is provided to align the amplifier output common-mode with the ADC input requirements. Power supplies between 3.3 V and 5.0 V can be selected and dual-supply operation is supported when required by the application. A power-down feature is also available for power savings.
This level of performance is achieved at a very low power level of 275 mW when a 5.0-V supply is used. The device is fabricated in Texas Instruments advanced complementary BiCMOS process and is available in a space-saving, UQFN-14 package for higher performance.
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|Number of Channels (#)|
|Total Supply Voltage (Min) (+5V=5, +/-5V=10)|
|Total Supply Voltage (Max) (+5V=5, +/-5V=10)|
|BW @ Acl (MHz)|
|Acl, min spec gain (V/V)|
|Slew Rate (Typ) (V/us)|
|Vn at Flatband (Typ) (nV/rtHz)|
|Vn at 1kHz (Typ) (nV/rtHz)|
|Iq per channel (Typ) (mA)|
|Vos (Offset Voltage @ 25C) (Max) (mV)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
|CMRR (Typ) (dB)|
|Input Bias Current (Max) (pA)|
|Offset Drift (Typ) (uV/C)|
|GBW (Typ) (MHz)|
|Output Current (Typ) (mA)|
|2nd Harmonic (dBc)|
|3rd Harmonic (dBc)|
| Bipolar |
| Fully Differential |
|-40 to 85||-40 to 85|
|14UQFN: 6 mm2: 2.5 x 2.5(UQFN)||14UQFN: 6 mm2: 2.5 x 2.5(UQFN)|
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