VCA8617PAGR
Active8-CHANNEL VARIABLE GAIN AMPLIFIER
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VCA8617PAGR
Active8-CHANNEL VARIABLE GAIN AMPLIFIER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | VCA8617PAGR |
|---|---|
| Current - Input Bias | 1 nA |
| Gain Bandwidth Product | 100 MHz |
| Mounting Type | Surface Mount |
| Number of Circuits [custom] | 8 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Type | Differential |
| Package / Case | 64-TQFP |
| Slew Rate | 300 V/µs |
| Supplier Device Package | 64-TQFP (10x10) |
| Voltage - Supply Span (Max) [Max] | 3.15 V |
| Voltage - Supply Span (Min) [Min] | 2.85 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 1500 | $ 35.84 | |
| Texas Instruments | LARGE T&R | 1 | $ 42.41 | |
| 100 | $ 37.70 | |||
| 250 | $ 30.99 | |||
| 1000 | $ 27.72 | |||
Description
General part information
VCA8617 Series
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 low-pass filter.
Documents
Technical documentation and resources