VCA824
- 710-MHz Small-Signal Bandwidth (G = 2 V/V)
- 320 MHz, 4-VPP Bandwidth (G = 10 V/V)
- 0.1-dB Gain Flatness to 135 MHz
- 2500-V/µs Slew Rate
- > 40-dB Gain Adjust Range
- High Gain Accuracy: 20-dB ±0.3-dB
- High Output Current: ±90 mA
The VCA824 is a DC-coupled, wideband, linear-in V/V, continuously variable, voltage-controlled gain amplifier. The device provides a differential input to single-ended conversion with a high-impedance gain control input used to vary the gain down 40 dB from the nominal maximum gain set by the gain resistor (RG) and feedback resistor (RF).
The VCA824 internal architecture consists of two input buffers and an output current feedback amplifier stage integrated with a multiplier core to provide a complete variable gain amplifier (VGA) system that does not require external buffering. The maximum gain is set externally with two resistors, providing flexibility in designs. The maximum gain is intended to be set between 2 V/V and 40 V/V. Operating from ±5-V supplies, the gain control voltage for the VCA824 adjusts the gain linearly in V/V as the control voltage varies from 1 V to –1 V. For example, set for a maximum gain of 10 V/V, the VCA824 provides 10 V/V, at 1-V input, to 0.1 V/V at –1-V input of gain control range. The VCA824 offers excellent gain linearity. For a 20-dB maximum gain, and a gain-control input voltage varying between 0 V and 1 V, the gain does not deviate by more than ±0.3-dB (maximum at 25°C).
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | VCA824 Ultra-Wideband, > 40-dB Gain Adjust Range, Linear in V/V Variable Gain Amplifier datasheet (Rev. E) | PDF | HTML | 2019年 7月 22日 |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
Analog Design Journal | Analog Applications Journal 2Q 2015 | 2015年 4月 28日 | ||
Analog Design Journal | Tips and tricks for high-speed, high-voltage measurement | 2015年 4月 28日 | ||
Application note | Implementating a Variable-Length Cat5e Cable Equalizer | 2010年 4月 25日 | ||
Application note | Wireline Data Transmission and Reception | 2010年 1月 27日 | ||
User guide | Voltage-Controlled Amplifier Evaluation Kit | 2008年 8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 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SOIC (D) | 14 | Ultra Librarian |
VSSOP (DGS) | 10 | Ultra Librarian |
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
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點