Overview
The AFE5828ZAV, produced by Texas Instruments, is a highly-integrated 16-channel analog front-end (AFE) solution specifically designed for ultrasound systems. This device is optimized for high performance, low power consumption, and compact size, making it ideal for medical ultrasound imaging and other ultrasound applications. The AFE5828ZAV is realized through a multichip module (MCM) with two dies: one voltage-controlled amplifier (VCA) die and one analog-to-digital converter (ADC) die. Each channel can be configured in either time gain compensation (TGC) mode or continuous wave (CW) mode, offering flexibility and optimized signal chains for various ultrasound applications.
Key Specifications
| Specification | Details |
|---|---|
| Number of Channels | 16 |
| Package Type | NFBGA-289 |
| Package Size | 15-mm × 15-mm |
| LNA Gain | 21 dB, 18 dB, 15 dB |
| LNA Input Signal Amplitude | 0.37 VPP, 0.5 VPP, 0.71 VPP |
| VCAT Attenuation Range | 0 dB to 36 dB |
| PGA Gain Range | 18 dB to 27 dB in steps of 3 dB |
| LPF Cutoff Frequency | 10 MHz to 30 MHz |
| ADC Resolution and Speed | 14-bit, 65 MSPS; 12-bit, 80 MSPS |
| ADC Interface | LVDS up to 1 Gbps |
| Power Consumption (TGC Mode) | 102 mW/Channel at 0.8 nV/√Hz, 65 MSPS, 14-bit |
| Power Consumption (CW Mode) | 63 mW/Channel |
| Device-to-Device Gain Matching | ±0.4 dB (Typical) |
Key Features
- Optimized signal chains for TGC and CW modes with four programmable TGC profiles.
- Low-noise amplifier (LNA) with programmable gain and active termination.
- Voltage-controlled attenuator (VCAT) with an attenuation range of 0 dB to 36 dB.
- Programmable gain amplifier (PGA) with gain options from 18 dB to 27 dB in steps of 3 dB.
- 3rd-order, linear-phase, low-pass filter (LPF) with a cutoff frequency from 10 MHz to 30 MHz.
- ADC modes: 14-bit, 65 MSPS or 12-bit, 80 MSPS with LVDS interface.
- Continuous wave (CW) path with low close-in phase noise and phase resolution of λ / 16.
- Support for 16x and 8x CW clocks and 12-dB suppression of 3rd and 5th harmonics.
- Fast and consistent overload recovery.
- Small package size: 15-mm × 15-mm NFBGA-289.
Applications
- Medical Ultrasound Imaging
- Nondestructive Evaluation Equipment
- Sonar Imaging Equipment
Q & A
- What is the AFE5828ZAV used for?
The AFE5828ZAV is used for ultrasound applications, including medical ultrasound imaging, nondestructive evaluation equipment, and sonar imaging equipment. - How many channels does the AFE5828ZAV have?
The AFE5828ZAV has 16 channels. - What are the gain options for the LNA in the AFE5828ZAV?
The LNA gain options are 21 dB, 18 dB, and 15 dB. - What is the attenuation range of the VCAT in the AFE5828ZAV?
The VCAT has an attenuation range of 0 dB to 36 dB. - What are the ADC resolution and speed options for the AFE5828ZAV?
The ADC can operate in 14-bit, 65 MSPS mode or 12-bit, 80 MSPS mode. - What is the power consumption of the AFE5828ZAV in TGC mode?
The power consumption in TGC mode is 102 mW/Channel at 0.8 nV/√Hz, 65 MSPS, 14-bit. - What is the package type and size of the AFE5828ZAV?
The package type is NFBGA-289, and the size is 15-mm × 15-mm. - Does the AFE5828ZAV support CW mode?
Yes, the AFE5828ZAV supports CW mode with low close-in phase noise and phase resolution of λ / 16. - What is the interface speed of the LVDS output?
The LVDS interface speed can be up to 1 Gbps. - Is the AFE5828ZAV suitable for battery-powered systems?
Yes, the device is optimized for low power consumption, making it suitable for systems with strict battery-life requirements.
