1 Features

• 16-Channel AFE for Ultrasound Applications:
  • Optimized Signal Chains for TGC and CW Modes
  • Four Programmable TGC Profiles
• Low-Noise Amplifier (LNA) With:
  • Programmable Gain: 21 dB, 18 dB, and 15 dB
  • Linear Input Signal Amplitude:
    0.37 V_PP, 0.5 V_PP, and 0.71 V_PP
  • Active Termination
• Voltage-Controlled Attenuator (VCAT):
  • Attenuation Range: 0 dB–36 dB
• Programmable Gain Amplifier (PGA):
  • 18 dB–27 dB in Steps of 3 dB
• 3rd-Order, Linear-Phase, Low-Pass Filter (LPF):
  • Cutoff Frequency From 10 MHz to 30 MHz
• ADC Modes (Idle-Channel SNR):
  • 14-Bit, 65-MSPS Mode: 75-dBFS
  • 12-Bit, 80-MSPS Mode: 72-dBFS
• Optimized for Noise and Power:
  • TGC Mode: 102 mW/Ch at 0.8 nV/√Hz,
    65-MSPS, 14-Bit Output
  • CW Mode: 63 mW/Ch
• Excellent Device-to-Device Gain Matching:
  • ±0.4 dB (Typical)
• Fast and Consistent Overload Recovery
• Continuous Wave (CW) Path With:
  • Low Close-In Phase Noise of –159 dBc/Hz at 1-kHz Frequency Offset off 2.5-MHz Carrier
  • Phase Resolution: λ / 16
  • Supports 16x and 8x CW Clocks
  • 12-dB Suppression of 3rd and 5th Harmonics
• LVDS Interface With a Speed Up to 1 Gbps
• Small Package: 15-mm × 15-mm NFBGA-289

2 Applications

• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipment
• Sonar Imaging Equipment

3 Description

The AFE5828 device is a highly-integrated, analog front-end (AFE) solutions specifically designed for ultrasound systems where high performance, low power, and small size are required.

1. For all available packages, see the package option addendum at the end of the datasheet.

SPACE

Simplified Block Diagram