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

All trademarks are the property of their respective owners.

View more

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)
AFE5805 AFE5801 AFE5803 AFE5804 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    
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    
135NFBGA     64VQFN     135NFBGA     135NFBGA     135NFBGA     135NFBGA     135NFBGA     135NFBGA     64VQFN    
44.70 | 1ku     40.00 | 1ku     52.00 | 1ku     44.70 | 1ku     54.00 | 1ku     58.00 | 1ku     58.00 | 1ku     87.00 | 1ku     72.00 | 1ku    
12     12     12
14    
12     12
14    
12
14    
12
14    
12
14    
12    
1     1     1     1     1     1     1     1     1    

Featured tools and software

Companion parts

Part # Name Product Family Comments
AFE5807   8-channel Analog Front End with Passive CW Mixer for Ultrasound   ANALOG FRONT END - ULTRASOUND    
AFE5808   8-channel Analog Front End with Passive CW Mixer for Ultrasound   ANALOG FRONT END - ULTRASOUND    
Click Here