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VCA8617

Features: ` 3V OPERATION` LOW INPUT NOISE: 1.0nV/Hz at fIN = 5MHz` EXTREMELY LOW POWER OPERATION: 100mW/CHANNEL` INTEGRATED LOW-PASS, 2-POLE FILTER 15MHz BANDWIDTH`INTEGRATED INPUT CLAMP DIODES` DIFFERENTIAL OUTPUT` INTEGRATED INPUT LNA` READABLE CONTROL REGISTERS` INTEGRATED CONTINUOUS WAVE (CW) ...

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SeekIC No. : 004540772 Detail

VCA8617: Features: ` 3V OPERATION` LOW INPUT NOISE: 1.0nV/Hz at fIN = 5MHz` EXTREMELY LOW POWER OPERATION: 100mW/CHANNEL` INTEGRATED LOW-PASS, 2-POLE FILTER 15MHz BANDWIDTH`INTEGRATED INPUT CLAMP DIODES` DIF...

VCA8617 Data Sheet

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Part Number:
VCA8617
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

` 3V OPERATION
` LOW INPUT NOISE: 1.0nV/Hz at fIN = 5MHz
` EXTREMELY LOW POWER OPERATION: 100mW/CHANNEL
` INTEGRATED LOW-PASS, 2-POLE FILTER 15MHz BANDWIDTH
` INTEGRATED INPUT CLAMP DIODES
` DIFFERENTIAL OUTPUT
` INTEGRATED INPUT LNA
` READABLE CONTROL REGISTERS
` INTEGRATED CONTINUOUS WAVE (CW) PROCESSOR


Pinout

Connection Diagram


Specifications

AVDD V . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . .+3.6
Analog Input . . . . . . . . . . . . . . . . . . .  . . . . . . .−0.3V to +AVDD + 0.3V
Logic Input  . . . . . . . . . . . . . . . . . . . . . . .  . . . .−0.3V to +AVDD + 0.3V
Case Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . .+100°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . +150°C
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . .   . . +150°C
Thermal Resistance, Junction-to-Ambient (JA)  . . . . . . .  . .66.6°C/W
Thermal Resistance, Junction-to-Case(JC) . . . . . . . . . . .  . .4.3°C/W


Description

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 VCA8617  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 VCA8617 PGA feeds directly into an integrated two-pole, low-pass filter.




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