The AFE5851 is an analog front-end targeting applications where the power and level of integration are critical. The device contains 16 variable gain amplifiers (VGA), followed by an octal high speed (up to 65 MSPS) analog to digital converter (ADC).
Each of the 16 single ended inputs is buffered, accepts up to 1VPP maximum input swing and it 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 anti-alias low pass filter (with 3dB attenuation at 7.5, 10 or 14MHz) is also integrated between the VGA and ADC for every channel. The VGA/anti-alias filter outputs are differential (limited to 2 VPP) and drive the on-board 12-bit 65MSPS ADC that is shared between two VGAs to optimize the power dissipation. Each VGA output is sampled at alternate clock cycles, making the effective sampling frequency half the input clock rate. The ADC also scales down its power consumption should a lower sampling rate be selected.
The ADC outputs are serialized in LVDS streams further minimizing power and board area. The AFE5851 is available in a 64-pin QFN package (9x9mm2) and is specified over the full industrial temperature range (–40°C to 85°C).
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | 16 CHANNEL VARIABLE GAIN AMPLIFIER (VGA) WITH OCTAL HIGH SPEED ADC datasheet (Rev. B) | 03 May 2010 | |
| User guide | AFE5851 16-Channel Variable Gain Ampl w/Octal High-Speed ADC (Rev. C) | 05 Mar 2015 | ||
| User guide | TSW1250EVM: High-Speed LVDS Deserializer and Analysis System (Rev. F) | 20 Jan 2012 | ||
| More literature | Ultrasound flyer (Rev. A) | 22 Sep 2011 | ||
| More literature | AFE5851 EVM Installer VO 02 | 20 May 2009 |
For additional terms or required resources, click any title below to view the detail page where available.
The AFE5851 includes an 16-channel Voltage-Controlled-Amplifier (VCA) with digital control and an 8-channel 65MSPS analog-to-digital converter (ADC). The 16 analog input signals will be processed by the analog front-end circuit of AFE5851; the outputs of the analog front-end will then be (...)
This high-speed data converter pro GUI is a PC (Windows® XP/7/10 compatible) program designed to aid in evaluation of most TI high-speed data converter [analog-to-digital converter (ADC) and digital-to-analog converter (DAC)] and analog front-end (AFE) platforms. Designed to support the entire (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |
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