8-channel VGA with ADC - AFE5801

AFE5801 (ACTIVE)

8-channel VGA with ADC

Recommended alternative parts

  • AFE5851  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.   Same functionality as AFE5801 with 16-channel and lower power.

Description

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).

Features

  • 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

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Parametrics Compare all products in Ultrasound

 
Function
Number of Channels (#)
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
Resolution (Bits)
Overload Recovery (clock cycle)
AFE5801 AFE5803 AFE5804 AFE5805 AFE5807 AFE5808 AFE5808A AFE5809 AFE5851
Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End     Ultrasound Analog Front End with digital demodulator     Ultrasound Analog Front End    
8     8     8     8     8     8     8     8     16    
-40 to 85     0 to 85     0 to 70     0 to 70     0 to 85     0 to 70     0 to 85     0 to 85     -40 to 85    
64VQFN     135NFBGA     135NFBGA     135NFBGA     135NFBGA     135NFBGA     135NFBGA     135NFBGA     64VQFN    
40.00 | 1ku     52.00 | 1ku     44.70 | 1ku     44.70 | 1ku     54.00 | 1ku     58.00 | 1ku     58.00 | 1ku     87.00 | 1ku     72.00 | 1ku    
12     12
14    
12     12     12
14    
12
14    
12
14    
12
14    
12    
1     1     1     1     1     1     1     1     1    

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