VCA8617, VCA8617EVM, VCA8617PAG Selling Leads, Datasheet
MFG:TEXASINSTRUMEN Package Cooled:QFP D/C:08+
VCA8617, VCA8617EVM, VCA8617PAG Datasheet download
Part Number: VCA8617
MFG: TEXASINSTRUMEN
Package Cooled: QFP
D/C: 08+
MFG:TEXASINSTRUMEN Package Cooled:QFP D/C:08+
VCA8617, VCA8617EVM, VCA8617PAG Datasheet download
MFG: TEXASINSTRUMEN
Package Cooled: QFP
D/C: 08+
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PDF/DataSheet Download
Datasheet: VCA8617
File Size: 409848 KB
Manufacturer: BURR-BROWN [Burr-Brown Corporation]
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PDF/DataSheet Download
Datasheet: VCA105
File Size: 66989 KB
Manufacturer: IXYS [IXYS Corporation]
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PDF/DataSheet Download
Datasheet: VCA8617PAGR
File Size: 409848 KB
Manufacturer: BURR-BROWN [Burr-Brown Corporation]
Download : Click here to Download
The VCA8617 is an 8-channel variable gain amplifier ideally suited to portable ultrasound applications. Excellent dynamic performance enables use in low-power, high-performance portable applications. Each channel consists of a 20dB gain Low-Noise pre-Amplifier (LNA) and a Variable Gain Amplifier (VGA). The differential outputs of the LNA can be switched through the 8x10 cross-point switch, which is programmable through the serial interface input port.
The output of the LNA is fed directly into the VGA stage. The VGA consists of two parts, a Voltage-Controlled Attenuator (VCA) and a Programmable Gain Amplifier (PGA). The gain and gain range of the PGA can be digitally configured separately. The gain of the PGA can vary between four discrete settings of 25dB, 30dB, 35dB, and 40dB. The VCA has four programmable maximum attenuation settings: 29dB, 33dB, 36.5dB, and 40dB. Also, the VCA can be continuously varied by a control voltage from 0dB to a maximum of 29dB, 33dB, 36.5dB, and 40dB.
The output of the PGA feeds directly into an integrated two-pole, low-pass filter.