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

 
Number of Channels (#)
Resolution (Bits)
Function
Input Voltage Noise (Typ) (nV/rtHz)
Total Max Gain (Typ) (dB)
Power/Channel (Typ) (mW)
Special Features
Gain Error (Typ) (dB)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
Gain Control Range (Typ) (dB)
Input Range (Typ) (mVpp)
HD2 Distortion (Typ) (dB)
Overload Recovery (clock cycle)
AFE5801 AFE5803 AFE5804 AFE5805 AFE5807 AFE5808 AFE5808A AFE5809 AFE5812 AFE5816 AFE5818 AFE5851 AFE58JD16 AFE58JD18
8    8    8    8    8    8    8    8    8    16    16    16    16    16   
12    12
14   
12    12    12
14   
12
14   
12
14   
12
14   
12, 14    12, 14    12
14   
12    12, 14    12, 14   
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    Ultrasound Analog Front End    Ultrasound Analog Front End    Ultrasound Analog Front End    Ultrasound Analog Front End    Ultrasound Analog Front End   
5.5    0.75    1.23    0.85    1.1    0.75    0.75    0.75    0.75    0.95    0.75    5.5    0.95    0.75   
31    54    49    50    54    54    54    54    54    46    54    31    45    54   
58    158    101    122    97    149    158    158    180    75    140    39    75    140   
DTGC    N/A    N/A    N/A    N/A    N/A    N/A    Digital I/Q Demodulator    Digital I/Q Demodulator    DTGC    N/A    DTGC    Demodulation, JESD    Demodulation, JESD   
+/-0.5    0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5    +/- 0.5    +/- 0.5    +/- 0.5    +/-0.5    +/- 0.5    +/- 0.5   
-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    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
VQFN    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    VQFN    NFBGA    NFBGA   
64VQFN: 81 mm2: 9 x 9(VQFN)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    135NFBGA: 135 mm2: 15 x 9(NFBGA)    289NFBGA: 225 mm2: 15 x 15(NFBGA)    289NFBGA: 225 mm2: 15 x 15(NFBGA)    64VQFN: 81 mm2: 9 x 9(VQFN)    289NFBGA: 225 mm2: 15 x 15(NFBGA)    289NFBGA: 225 mm2: 15 x 15(NFBGA)   
40.00 | 1ku    52.00 | 1ku    44.70 | 1ku    44.70 | 1ku    54.00 | 1ku    58.00 | 1ku    58.00 | 1ku    87.00 | 1ku    95.00 | 1ku    120.00 | 1ku    130.00 | 1ku    72.00 | 1ku    200.00 | 1ku    215.00 | 1ku   
36    40    46    46    40    40    40    40    40    39    40    36    39    40   
2000    1000    280    250    1000    1000    1000    1000    1000    1000    1000    1000    1000    1000   
-75    -60    -65    -60    -60    -60    -60    -60    -60    -60    -60    -55    -60    -60   
1    1    1    1    1    1    1    1    1    1    1    1    1    1   

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