Overview
The AFE58JD48ZAV, produced by Texas Instruments, is a highly integrated 16-channel analog front-end (AFE) solution specifically designed for premium ultrasound systems. This device is realized through a multichip module (MCM) with three dies: one 16-channel voltage-controlled amplifier (VCA) die and two 8-channel analog-to-digital converter (ADC) dies. It is optimized for medical ultrasound applications, offering advanced features such as low-noise amplifiers, programmable gain amplifiers, and high-speed ADCs with JESD204B or LVDS interfaces.
Key Specifications
| Specification | Details |
|---|---|
| Package Type | NFBGA-289 |
| Body Size | 15.00 mm × 15.00 mm |
| Number of Channels | 16 |
| Low-Noise Amplifier (LNA) Gain | 21 dB, 18 dB, 15 dB |
| Voltage-Controlled Attenuator (VCAT) Range | 0 dB to 36 dB |
| Programmable Gain Amplifier (PGA) Range | 18 dB to 27 dB in steps of 3 dB |
| Low-Pass Filter (LPF) Cutoff Frequency | 10 MHz to 60 MHz |
| ADC Resolution and Sampling Rate | 16-bit, 125 MSPS; 14-bit, 80 MSPS |
| ADC Interface | JESD204B, LVDS |
| Power Consumption per Channel | 140 mW (125 MSPS, 16-bit), 120 mW (80 MSPS, 16-bit) |
| Noise Floor | 0.8 nV/√Hz |
Key Features
- Four programmable time gain compensation (TGC) setting profiles.
- Low-noise amplifier (LNA) with active termination and programmable gains.
- Voltage-controlled attenuator (VCAT) with an attenuation range of 0 dB to 36 dB.
- Programmable gain amplifier (PGA) with gains from 18 dB to 27 dB in steps of 3 dB.
- Third-order low-pass filter (LPF) with a cutoff frequency adjustable between 10 MHz and 60 MHz.
- 16-bit or 14-bit ADC with JESD204B or LVDS output interfaces.
- Digital I/Q demodulator with fractional decimation filters and on-chip RAM for 32 preset profiles.
- Continuous wave (CW) path with passive mixer, summing amplifier, and harmonic suppression.
- Excellent near-field signal-to-noise ratio (SNR) and fast overload recovery.
Applications
- Medical ultrasound imaging.
- High-frequency ultrasound imaging.
- Non-destructive testing (NDT).
- Sonar, radar, and LiDAR imaging equipment.
- Multi-channel data acquisition systems.
Q & A
- What is the primary application of the AFE58JD48ZAV?
The AFE58JD48ZAV is primarily designed for premium medical ultrasound systems.
- How many channels does the AFE58JD48ZAV support?
The device supports 16 channels.
- What are the gain options for the low-noise amplifier (LNA)?
The LNA gain can be set to 21 dB, 18 dB, or 15 dB.
- What is the attenuation range of the voltage-controlled attenuator (VCAT)?
The VCAT supports an attenuation range of 0 dB to 36 dB.
- What are the ADC resolution and sampling rate options?
The ADC can operate at 16-bit, 125 MSPS or 14-bit, 80 MSPS.
- What interfaces does the ADC support?
The ADC supports JESD204B and LVDS interfaces.
- What is the power consumption per channel in TGC mode?
The power consumption per channel is 140 mW at 125 MSPS, 16-bit resolution.
- What is the noise floor of the device?
The noise floor is 0.8 nV/√Hz.
- Does the device support continuous wave (CW) mode?
- Is the device available for new designs?
No, the device is not recommended for new designs and is in a lifetime-buy period.
