AFE5801
- Eight Variable-Gain Amplifiers (VGA)
- Eight Differential Buffered Inputs With 2Vpp Maximum Swing
- 5.5nV/√Hz VCA Input Noise (31dB Gain)
- Variable Gain, –5dB to 31dB With 0.125dB or 1dB Steps
- Digital Gain Control
- Third-Order Antialiasing Filter With Programmable Cutoff Frequency (7.5, 10, or 14MHz)
- Clamping
- Analog-to-Digital Converter (ADC)
- Octal Channel, 12Bit, 65MSPS
- Internal and External Reference Support
- No External Decoupling Required for References
- Serial LVDS Outputs
- 1.8V and 3.3V Supplies
- 50mW Total Power per Channel at 30MSPS
- 58mW Total Power per Channel at 50MSPS
- 64QFN Package (9mm × 9mm)
- APPLICATIONS
- Imaging: Ultrasound, PET
- APPLICATIONS
- AFE5851: 16-Channel VGA + ADC, 32.5MSPS/Channel
The AFE5801 is an analog front end, targeting applications where the power and level of integration are critical. The device contains eight variable-gain amplifiers (VGA), each followed by a high-speed (up to 65MSPS) ADC, for a total of eight ADCs per device.
Each of the eight differential inputs is buffered, accepts up to 2Vpp maximum input swing, and is followed by a VGA with a gain range from –5dB to 31dB. The VGA gain is digitally controlled, and the gain curves versus time can be stored in memory integrated within the device using the serial interface.
A selectable clamping and antialias low-pass filter (with 3dB attenuation at 7.5, 10, or 14MHz) is also integrated between VGA and ADC, for every channel.
The VGA/antialias filter outputs are differential (limited to 2Vpp) and drive the onboard 12bit, 65MSPS ADC. The ADC also scales down its power consumption should a lower sampling rate be selected. The ADC outputs are serialized in LVDS streams, which further minimizes power and board area.
The AFE5801 is available in a 64-pin QFN package (9mm × 9mm) and is specified over the full industrial temperature range (–40°C to 85°C).
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | 8-Channel Variable-Gain Amplifier (VGA) With Octal High-Speed ADC datasheet (Rev. D) | 2010/5/24 | |||
| 使用指南 | AFE5801 8-Channel Varable Gain Ampl w/Octal High-Speed ADC (Rev. B) | 2015/3/5 | ||||
| 使用指南 | TSW1250EVM: High-Speed LVDS Deserializer and Analysis System (Rev. F) | 2012/1/20 | ||||
| 更多文件說明 | Ultrasound flyer (Rev. A) | 2011/9/22 |
設計與開發
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AFE5801EVM — AFE5801 評估模組
AFE5801 評估模組 (EVM) 是用於評估 AFE5801 裝置的平台。AFE5801 包含一個具有數位控制的八通道電壓控制放大器 (VCA)，和一個八通道 65MSPS 類比數位轉換器 (ADC)。八個類比輸入訊號將由 AFE5801 的類比前端 (AFE) 電路處理；AFE 的輸出將由裝置內的 ADC 數位化。
請注意，AFE5801EVM 評估需要 TSW1400EVM (停產)。建議您不要購買 AFE5801EVM，除非您已擁有 TSW1400EVM。
SLOC145 — AFE5801 and AFE5851 TGC Calculator
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。