The LMH6521 contains two high performance, digitally controlled variable gain amplifiers (DVGA).
Both channels of the LMH6521 have 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 0.5-dB gain steps over a 31.5-dB range. Serial and parallel programming options are provided. Serial mode programming uses 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 10-VPPD signal swings on a single 5-V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.
|Number of Channels (#)|
|Vs (Min) (V)|
|Vs (Max) (V)|
|BW @ Acl (MHz)|
|Acl, min spec gain (V/V)|
|Gain (Max) (dB)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
|-40 to 85||-40 to 85||-40 to 85|
|WQFN | 32||WQFN | 54||WQFN | 54|
|32WQFN: 25 mm2: 5 x 5 (WQFN | 32)||54WQFN: 55 mm2: 5.5 x 10 (WQFN | 54)||54WQFN: 55 mm2: 5.5 x 10 (WQFN | 54)|
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