TEXAS INSTRUMENTS LMH6521SQE Programmable/Variable Amplifier, 2Channels, 1 Amplifier, 1.2GHz, -40℃, 85℃, 4.75V to 5.25V
The is a two high performance digitally controlled Variable Gain Amplifier for use with wideband direct conversion. Both channels of the LMH6521 has an independent, digitally controlled attenuator followed by a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel has a high speed power down mode. The internal digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. Serial mode programming utilizes the SPI interface. A pulse mode is also offered where simple up or down commands can change the gain one step at a time. The output amplifier has a differential output allowing 10VPPD signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.
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- Low power dissipation
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- Independent channel power down
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- 3 Gain control modes - Parallel interface, serial interface SPI and pulse mode interface
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- Maximum voltage gain of 26dB
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- Gain range of 31.5dB with 0.5dB step size
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- Channel gain matching of ±0.04dB
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- Noise figure of 7.3dB at maximum gain
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- Green product and no Sb/Br