AFE5828
- 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 VPP, 0.5 VPP, and 0.71 VPP - 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
- TGC Mode: 102 mW/Ch at 0.8 nV/√Hz,
- 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
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.
The AFE5828 is an integrated AFE optimized for medical ultrasound application. The device is realized through a multichip module (MCM) with two dies: one voltage-controlled amplifier (VCA) die and one analog-to-digital converter (ADC) die. The VCA die has 16 channels that interface with the 16 channels of the ADC die.
Each channel in the VCA die can be configured in one of two modes: time gain compensation (TGC) mode or continuous wave (CW) mode. In TGC mode, each channel includes a low-noise amplifier (LNA), a voltage-controlled attenuator (VCAT), a programmable gain amplifier (PGA), and a third-order, low-pass filter (LPF). The LNA is programmable in gains of 21 dB, 18 dB, or 15 dB. The LNA also supports active termination. The VCAT supports an attenuation range of 0 dB to 36 dB, with analog voltage control for the attenuation. The PGA provides gain options from 18 dB to 27 dB in steps of 3 dB. The LPF cutoff frequency can be set between 10 MHz and 30 MHz to support ultrasound applications with different frequencies. In CW mode, the output of the LNA goes to a low-power passive mixer with 16 selectable phase delays followed by a summing amplifier with a band-pass filter. Different phase delays can be applied to each analog input signal to perform an on-chip beamforming operation. A harmonic filter in the CW mixer suppresses the third and fifth harmonic to enhance the sensitivity of the CW Doppler measurement.
The 16 channels of the ADC die can be configured to operate with a resolution of 14 bits or 12 bits. The ADC resolution can be traded off with conversion rate, and can operate at maximum speeds of 65 MSPS and 80 MSPS at 14-bit and 12-bit resolution, respectively. The ADC is designed to scale its power with sampling rate. The output interface of the ADC comes out through a low-voltage differential signaling (LVDS) that can easily interface with low-cost field-programmable gate arrays (FPGAs).
The device also allows various power and noise combinations to be selected for optimizing system performance. Therefore, these devices are suitable ultrasound AFE solutions for systems with strict battery-life requirements.
The device is available in a 15-mm × 15-mm NFBGA-289 package and is pin-compatible with the AFE5818 and AFE5816 family.
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技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | AFE5828 16-Channel Ultrasound AFE with 102-mW/Channel Power, 0.8-nV/√Hz Noise, 14-Bit, 65-MSPS or 12-Bit, 80-MSPS ADC, LVDS Interface, and Passive CW Mixer datasheet (Rev. A) | PDF | HTML | 2017年 10月 27日 |
Application brief | Building High-Performance NDT Systems with Ultrasound Transmitters and Receivers | PDF | HTML | 2023年 8月 4日 | |
Application note | Understanding CW Mode for Ultrasound AFE Devices | 2017年 7月 17日 | ||
Application note | Introduction to Ultrasound | 2017年 7月 10日 |
設計與開發
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AFE5828EVM — 具有 LVDS 介面和被動 CW 混頻器的 AFE5828 16 通道超音波 AFE 評估模組
AFE5828 為一專為超音波系統設計,並要求高性能和小體積的高度整合類比前端 (AFE) 解決方案。此裝置整合了完整的時間增益控制 (TGC) 影像路徑和連續波都卜勒 (CWD) 路徑。16 通道裝置是 TI 功耗最低的解決方案,可實現各種功耗與雜訊組合,以發揮最佳系統效能。因此,AFE5828 是適用於高階和可攜式系統的超音波 AFE 解決方案。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
NFBGA (ZAV) | 289 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。