Overview
The AFE5818ZBV is a highly integrated, multichannel Analog Front End (AFE) designed by Texas Instruments. This device is specifically tailored for high-performance applications, particularly in ultrasound systems where small size and high performance are crucial. It integrates a complete time-gain-control (TGC) imaging path and a continuous wave Doppler (CWD) path, making it suitable for both high-end and portable systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer Part Number | AFE5818ZBV |
| Manufacturer | Texas Instruments |
| Number of Bits | 14-bit (65 MSPS), 12-bit (80 MSPS) |
| Number of Channels | 16 |
| Power Consumption | 140 mW (total), 140 mW/Channel at 65 MSPS |
| Voltage Supply, Analog | 1.7V ~ 1.9V, 3.15V ~ 3.6V, 5V |
| Voltage Supply, Digital | 1.15V ~ 1.25V, 1.7V ~ 1.9V |
| Mounting Type | Surface Mount |
| Package / Case | 289-NFBGA (15x15 mm) |
| Operating Temperature | -40°C to 85°C |
Key Features
- Complete analog front-end with LNA, VCAT, PGA, LPF, ADC, and CW mixer.
- Programmable LNA gain: 24dB, 18dB, and 12dB.
- Voltage-controlled attenuator (VCAT) with 40dB attenuation range.
- Programmable gain amplifier (PGA) with gain options of 24dB and 30dB.
- Third-order, linear-phase low-pass filter (LPF) with multiple frequency options.
- High-performance ADC with 75dBFS SNR at 65 MSPS and 72dBFS SNR at 80 MSPS.
- LVDS interface with maximum speed of 1Gbps.
- Low harmonic distortion and fast overload recovery.
- Passive mixer for CWD with low close-in phase noise and harmonic suppression filter.
- Excellent device-to-device gain matching: ±0.5dB (typical) and ±1.1dB (maximum).
Applications
- Medical imaging systems, such as MRI and CT scan machines.
- Ultrasound systems, including both high-end and portable devices.
- Industrial process control.
- Data acquisition for scientific research.
Q & A
- What is the primary application of the AFE5818ZBV?
The AFE5818ZBV is primarily designed for ultrasound systems, including both high-end and portable devices.
- How many channels does the AFE5818ZBV have?
The AFE5818ZBV has 16 channels.
- What is the resolution of the ADC in the AFE5818ZBV?
The ADC in the AFE5818ZBV is available in 14-bit (65 MSPS) and 12-bit (80 MSPS) resolutions.
- What is the power consumption of the AFE5818ZBV?
The total power consumption is 140 mW, with 140 mW per channel at 65 MSPS.
- What are the voltage supply options for the AFE5818ZBV?
The analog voltage supply options are 1.7V ~ 1.9V, 3.15V ~ 3.6V, and 5V. The digital voltage supply options are 1.15V ~ 1.25V and 1.7V ~ 1.9V).
- What type of package does the AFE5818ZBV use?
The AFE5818ZBV is packaged in a 289-NFBGA (15x15 mm) surface mount package).
- What are the key features of the LNA in the AFE5818ZBV?
The LNA has programmable gain options of 24dB, 18dB, and 12dB, and supports input signals of 250mVPP to 1VPP).
- What is the significance of the VCAT in the AFE5818ZBV?
The VCAT provides an attenuation control range of 40dB, improving the overall low-gain SNR, which benefits harmonic and near-field imaging).
- How does the AFE5818ZBV optimize system performance?
The device allows various power and noise combinations to be selected to optimize system performance, making it suitable for both high-end and portable systems).
- What is the operating temperature range of the AFE5818ZBV?
The operating temperature range is from -40°C to 85°C).
