AFE5804 (ACTIVE)

8-Channel Analog Front-End for Ultrasound

Recommended alternative parts

  • AFE5805  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   Same functionality and pinout to AFE5804 with lower noise at 0.85nV/rtHz

Description

The AFE5804 is a complete analog front-end device specifically designed for ultrasound systems that require low power and small size.

The AFE5804 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 AFE5804.

The PGA can be programmed for gains of 20dB, 25dB, 27dB, and 30dB. The internal low-pass filter can also be programmed to 12.5MHz or 17MHz.

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 AFE5804 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 +85°C.

Features

  • 8-Channel Complete Analog Front-End:
    • LNA, VCA, PGA, LPF, and ADC
  • Mode Control for Power/Noise Optimization:
    • Low Noise (Full-Channel):
      0.89nV/√Hz (TGC Mode I)
      1.23nV/√Hz (TGC Mode II)
      1.03nV/√Hz (PW Mode)
    • Ultra-Low Power:
      101mW/Channel (TGC Mode II)
      65mW/Channel (CW Mode)
  • Low-Noise Pre-Amp (LNA):
    • 0.75nV/√Hz
    • 20dB Fixed Gain
    • 280mVPP Linear Input Range
  • Variable-Gain Amplifier:
    • Gain Control Range: 46dB
  • PGA Gain Settings: 20dB, 25dB, 27dB, 30dB
  • Low-Pass Filter:
    • Selectable BW: 12.5MHz, 17MHz
    • 2nd-Order, Bessel
  • Gain Error: ±0.5dB
  • Channel Matching: ±0.25dB
  • Clamping
  • Fast Overload Recovery: Two Clock Cycles
  • 12-Bit Analog-to-Digital Converter:
    • 10MSPS to 50MSPS
    • 69dB SNR at 10MHz
    • Serial LVDS Interface
  • Integrated CW Switch Matrix
  • 15mm × 9mm, 135-BGA Package:
    • Pb-Free (RoHS-Compliant) and Green

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Parametrics Compare all products in Ultrasound

 
Number of Channels (#)
Resolution (Bits)
Input Voltage Noise (Typ) (nV/rtHz)
Power/Channel (Typ) (mW)
Gain Control Range (Typ) (dB)
Input Range (Typ) (mVpp)
Total Max Gain (Typ) (dB)
Gain Error (Typ) (dB)
HD2 Distortion (Typ) (dB)
Special Features
Overload Recovery (clock cycle)
Function
Operating Temperature Range (C)
Package Group
Estimated Package Size (WxL) (mm2)
Approx. Price (US$)
AFE5804 AFE5801 AFE5803 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     12
14    
12     12
14    
12
14    
12
14    
12
14    
12, 14     12, 14     12
14    
12     12, 14     12, 14    
1.23     5.5     0.75     0.85     1.1     0.75     0.75     0.75     0.75     0.95     0.75     5.5     0.95     0.75    
101     58     158     122     97     149     158     158     180     75     140     39     75     140    
46     36     40     46     40     40     40     40     40     39     40     36     39     40    
280     2000     1000     250     1000     1000     1000     1000     1000     1000     1000     1000     1000     1000    
49     31     54     50     54     54     54     54     54     46     54     31     45     54    
+/-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    
-65     -75     -60     -60     -60     -60     -60     -60     -60     -60     -60     -55     -60     -60    
                Digital I/Q Demodulator           Demodulation, JESD     Demodulation, JESD    
1     1     1     1     1     1     1     1     1     1     1     1     1     1    
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 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: 15 x 9: 135 mm2     64VQFN: 9 x 9: 81 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     135NFBGA: 15 x 9: 135 mm2     289NFBGA: 15 x 15: 225 mm2     289NFBGA: 15 x 15: 225 mm2     64VQFN: 9 x 9: 81 mm2     289NFBGA: 15 x 15: 225 mm2     289NFBGA: 15 x 15: 225 mm2    
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    

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