AFE5805 (ACTIVE)

8-Channel Analog Front-End for Ultrasound

 

Recommended alternative parts

  • AFE5804  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   Same functionality and pinout to AFE5805 with lower power at 102 mW/Ch

Description

The AFE5805 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size.

The AFE5805 consists of eight channels, including a low-noise amplifier (LNA), voltage-controlled attenuator (VCA), programmable gain amplifier (PGA), low-pass filter (LPF), and a 12-bit analog-to-digital converter (ADC) with low voltage differential signaling (LVDS) data outputs.

The LNA gain is set for 20dB gain, and has excellent noise and signal handling capabilities, including fast overload recovery. VCA gain can vary over a 46dB range with a 0V to 1.2V control voltage common to all channels of the AFE5805.

The PGA can be programmed for gains of 20dB, 25dB, 27dB, and 30dB. The internal low-pass filter can also be programmed to 10MHz or 15MHz.

The LVDS outputs of the ADC reduce the number of interface lines to an ASIC or FPGA, thereby enabling the high system integration densities desired for portable systems. The ADC can either be operated with internal or external references. The ADC also features a signal-to-noise ratio (SNR) enhancement mode that can be useful at high gains.

The AFE5805 is available in a 15mm × 9mm, 135-ball BGA package that is Pb-free (RoHS-compliant) and green. It is specified for operation from 0°C to +70°C.

Features

  • 8-Channel Complete Analog Front-End:
    • LNA, VCA, PGA, LPF, and ADC
  • Ultra-Low, Full-Channel Noise:
    • 0.85nV/√Hz (TGC)
    • 1.1nV/√Hz (CW)
  • Low Power:
    • 122mW/Channel (40MSPS)
    • 74mW/Channel (CW Mode)
  • Low-Noise Pre-Amp (LNA):
    • 0.75nV/√Hz
    • 20dB Fixed Gain
    • 250mVPP Linear Input Range
  • Variable-Gain Amplifier:
    • Gain Control Range: 46dB
  • PGA Gain Settings: 20dB, 25dB, 27dB, 30dB
  • Low-Pass Filter:
    • Selectable BW: 10MHz, 15MHz
    • 2nd-Order
  • Gain Error: ±0.5dB
  • Channel Matching: ±0.25dB
  • Distortion, HD2: –65dBFS at 5MHz
  • Clamping Control
  • Fast Overload Recovery: Two Clock Cycles
  • 12-Bit Analog-to-Digital Converter:
    • 10MSPS to 50MSPS
    • 69.5dB SNR at 10MHz
    • Serial LVDS Interface
  • Integrated CW Switch Matrix
  • 15mm × 9mm, 135-BGA Package:
    • Pb-Free (RoHS-Compliant) and Green
  • APPLICATIONS
    • Medical Imaging, Ultrasound
      • Portable Systems

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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)
AFE5805 AFE5801 AFE5803 AFE5804 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    12
14   
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   
0.85    5.5    0.75    1.23    1.1    0.75    0.75    0.75    0.75    0.95    0.75    5.5    0.95    0.75   
50    31    54    49    54    54    54    54    54    46    54    31    45    54   
122    58    158    101    97    149    158    158    180    75    140    39    75    140   
N/A    DTGC    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   
0 to 70    -40 to 85    0 to 85    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   
NFBGA    VQFN    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    NFBGA    VQFN    NFBGA    NFBGA   
135NFBGA: 135 mm2: 15 x 9(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)    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)   
44.70 | 1ku    40.00 | 1ku    52.00 | 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   
46    36    40    46    40    40    40    40    40    39    40    36    39    40   
250    2000    1000    280    1000    1000    1000    1000    1000    1000    1000    1000    1000    1000   
-60    -75    -60    -65    -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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