AFE5803 (ACTIVE)

Fully Integrated, 8-Channel Ultrasound Analog Front End

 

Description

The AFE5803 is a highly integrated Analog Front-End (AFE) solution specifically designed for ultrasound systems in which high performance and small size are required. The AFE5803 integrates a complete time-gain-control (TGC) imaging path. It also enables users to select one of various power/noise combinations to optimize system performance. Therefore, the AFE5803 is a suitable ultrasound analog front end solution for portable systems.

The AFE5803 contains eight channels of voltage controlled amplifier (VCA), 14/12-bit Analog-to-Digital Converter (ADC). The VCA includes Low noise Amplifier (LNA), Voltage controlled Attenuator (VCAT), Programmable Gain Amplifier (PGA), and Low-Pass Filter (LPF). The LNA gain is programmable to support 250 mVPP to 1 VPP input signals. Programmable active termination is also supported by the LNA. The ultra-low noise VCAT provides an attenuation control range of 40 dB and improves overall low gain SNR which benefits harmonic imaging and near field imaging. The PGA provides gain options of 24 dB and 30 dB. Before the ADC, a LPF can be configured as 10 MHz, 15 MHz, 20 MHz or 30 MHz to support ultrasound applications with different frequencies. The high-performance 14bit/65 MSPS ADC in the AFE5803 achieves 77dBFS SNR. It ensures excellent SNR at low chain gain. The ADC’s LVDS outputs enable flexible system integration desired for miniaturized systems.

The AFE5803 is available in a 15mm × 9mm, 135-pin BGA package and it is specified for operation from 0°C to 85°C. It is also pin-to-pin compatible to the AFE5807, AFE5808 and AFE5808A.

Features

  • 8-Channel Complete Analog Front-End
    • LNA, VCAT, PGA, LPF, ADC
  • Programmable Gain Low-Noise Amplifier (LNA)
    • 24/18/12 dB Gain
    • 0.25/0.5/1 VPP Linear Input Range
    • 0.63/0.7/0.9 nV/rtHz Input Referred Noise
    • Programmable Active Termination
  • 40 dB Low Noise Voltage Controlled Attenuator (VCAT)
  • 24/30 dB Programmable Gain Amplifier (PGA)
  • 3rd Order Linear Phase Low-Pass Filter (LPF)
    • 10, 15, 20, 30 MHz
  • 14-bit Analog to Digital Converter (ADC)
    • 77 dBFS SNR at 65 MSPS
    • LVDS Outputs
  • Noise/Power Optimizations (Full Chain)
    • 158 mW/CH at 0.75 nV/rtHz, 65 MSPS
    • 101 mW/CH at 1.1 nV/rtHz, 40 MSPS
  • Excellent Device-to-Device Gain Matching
    • ±0.5 dB (Typical) and ±0.9 dB (Max)
  • Low Harmonic Distortion
  • Fast and Consistent Overload Recovery
  • Small Package: 15 mm x 9 mm, 135-BGA

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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)
AFE5803 AFE5801 AFE5804 AFE5805 AFE5807 AFE5808A AFE5851
8    8    8    8    8    8    16   
12
14   
12    12    12    12
14   
12
14   
12   
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   
0.75    5.5    1.23    0.85    1.1    0.75    5.5   
54    31    49    50    54    54    31   
158    58    101    122    97    158    39   
N/A    DTGC    N/A    N/A    N/A    N/A    DTGC   
0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5    +/-0.5   
0 to 85    -40 to 85    0 to 70    0 to 70    0 to 85    0 to 85    -40 to 85   
NFBGA    VQFN    NFBGA    NFBGA    NFBGA    NFBGA    VQFN   
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)    64VQFN: 81 mm2: 9 x 9(VQFN)   
52.00 | 1ku    40.00 | 1ku    44.70 | 1ku    44.70 | 1ku    54.00 | 1ku    58.00 | 1ku    72.00 | 1ku   
40    36    46    46    40    40    36   
1000    2000    280    250    1000    1000    1000   
-60    -75    -65    -60    -60    -60    -55   
1    1    1    1    1    1    1   

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