VCA8617
- 3V OPERATION
- LOW INPUT NOISE:
- 1.05nV/√Hz at fIN = 5MHz
- EXTREMELY LOW POWER OPERATION:
- 103mW/CHANNEL
- INTEGRATED LOW-PASS, ANTI-ALIASING BUTTERWORTH FILTER
- 14.5MHz BANDWIDTH
- INTEGRATED INPUT CLAMP DIODES
- DIFFERENTIAL OUTPUT
- INTEGRATED INPUT LNA
- READABLE CONTROL REGISTERS
- INTEGRATED CONTINUOUS WAVE (CW) PROCESSOR
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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Eight-Channel Variable Gain Amplifier datasheet (Rev. F) | 2009年 11月 18日 | |
Application note | Interfacing the VCA8617 with High-Speed ADCs | 2005年 4月 5日 | ||
Application note | VCA8617: Response to Step-Change in Gain Control | 2005年 3月 24日 | ||
Application note | AB-170: Ultrasound Processor Supplementary Material | 2001年 1月 25日 |
設計與開發
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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 引腳 | 下載 |
---|---|---|
TQFP (PAG) | 64 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點