AFE5809
- 8-Channel Complete Analog Front-End
- LNA, VCAT, PGA, LPF, ADC, and CW Mixer
- Programmable Gain Low-Noise Amplifier (LNA)
- 24-, 18-, 12-dB Gain
- 0.25-, 0.5-, 1-VPP Linear Input Range
- 0.63-, 0.7-, 0.9-nV/rtHz Input Referred Noise
- Programmable Active Termination
- 40-dB Low-Noise Voltage Controlled Attenuator
(VCAT) - 24-/30-dB Programmable Gain Amplifier (PGA)
- Third-Order Linear Phase Low-Pass Filter (LPF)
- 10,15, 20, 30 MHz
- 14-Bit Analog-to-Digital Converter (ADC)
- 77 dBFS SNR at 65 MSPS
- LVDS Outputs
- Noise, Power Optimizations (Without Digital
Demodulator)- 158 mW/CH at 0.75 nV/rtHz, 65 MSPS
- 101 mW/CH at 1.1 nV/rtHz, 40 MSPS
- 80 mW/CH at CW Mode
- Excellent Device-to-Device Gain Matching
- ±0.5 dB (Typical) and ±1 dB (Maximum)
- Digital I/Q Demodulator after ADC
- Wide Range Demodulation Frequency
- <1 kHz Frequency Resolution
- Decimation Filter Factor M = 1 to 32
- 16xM Tap FIR Decimation Filter
- LVDS Rate Reduction after Demodulation
- On-Chip RAM With 32 Preset Profiles
- Low Harmonic Distortion
- Low-Frequency Sonar Signal Processing
- Fast and Consistent Overload Recovery
- Passive Mixer for Continuous Wave Doppler
(CWD)- Low Close-in Phase Noise –156 dBc/Hz at 1
kHz off 2.5-MHz Carrier - Phase Resolution of 1/16λ
- Support 16×, 8×, 4×, and 1× CW Clocks
- 12-dB Suppression on Third and Fifth
Harmonics - Flexible Input Clocks
- Low Close-in Phase Noise –156 dBc/Hz at 1
- Small Package: 15 mm × 9 mm, 135-BGA
The AFE5809 device is a highly-integrated analog front-end (AFE) solution specifically designed for ultrasound systems in which high performance and small size are required. The AFE5809 device integrates a complete time-gain-control (TGC) imaging path and a CWD path. The device also enables users to select one of various power and noise combinations to optimize system performance. Therefore, the AFE5809 device is a suitable ultrasound AFE solution not only for high-end systems, but also for portable ones.
The AFE5809 device contains eight channels of voltage controlled amplifier (VCA), 14, and 12-bit ADC, and CW mixer. The VCA includes LNA, VCAT, PGA, and LPF. The LNA gain is programmable to support 250 mVPP to 1 VPP input signals. Programmable active termination is also supported by the LNA. The ultra-low noise VCAT provides an attenuation control range of 40 dB and improves overall low-gain SNR, which benefits harmonic imaging and near-field imaging. The PGA provides gain options of 24 and 30 dB. Before the ADC, a LPF can be configured as 10, 15, 20, or 30 MHz to support ultrasound applications with different frequencies. In addition, the signal chain of the AFE5809 device can handle signal frequency lower than 100 kHz, which enables the device to be used in both sonar and medical applications. The high-performance 14-bit/65-MSPS ADC in the AFE5809 device achieves 77-dBFS SNR. It ensures excellent SNR at low chain gain. The ADC’s LVDS outputs enable flexible system integration desired for miniaturized systems.
The AFE5809 device integrates a low-power passive mixer and a low-noise summing amplifier to accomplish on-chip CWD beamformer. 16 selectable phase-delays can be applied to each analog input signal. Meanwhile, a unique third- and fifth-order harmonic suppression filter is implemented to enhance CW sensitivity.
The AFE5809 device also includes a digital in-phase and quadrature (I/Q) demodulator and a low-pass decimation filter. The main purpose of the demodulation block is to reduce the LVDS data rate and improve overall system power efficiency. The I/Q demodulator can accept ADC output with up to 65 MSPS sampling rate and 14-bit resolution. For example, after digital demodulation and 4× decimation filtering, the data rate for either in-phase or quadrature output is reduced to 16.25 MSPS and the data resolution is improved to 16 bits, consequently. Hence, the overall LVDS trace reduction can be a factor of 2. This demodulator can be bypassed and powered down completely if it is not needed.
The AFE5809 device is available in a 15-mm × 9-mm, 135-pin BGA package, and it is specified for operation from 0°C to 85°C.
Note: AFE5809 with date code later than 2014, that is date code >41XXXX, has below additional features which can be enabled by Register 61[15,14,13]. Existing analog performance remains the same.
- 61[13] enables an additional voltage clamp at the V2I input of the PGA. This limits the amount of overload signal the PGA sees.
- 61[14] enables a first-order 5-MHz LPF filter to suppress signals >5 MHz or high-order harmonics.
- 61[15] enables a –6-dB PGA clamp setting. The actual PGA output is less than the ADC’s full-scale amplitude, 2 Vpp.
기술 자료
| 상위 문서 | 유형 | 직함 | 형식 옵션 | 최신 영어 버전 다운로드 | 날짜 |
|---|---|---|---|---|---|
| * | 데이터 시트 | AFE5809 Fully Integrated, 8-Channel Ultrasound Analog Front End With Passive CW Mixer, and Digital I/Q Demodulator, 0.75 nV/rtHz, 14, 12-Bit, 65 MSPS, 158 mW/CH datasheet (Rev. E) | PDF | HTML | 2014. 8. 25 | |
| 설계 가이드 | SONAR Receiver Path Sub-System Using the AFE5809 Design Guide | 2014. 11. 23 | |||
| 애플리케이션 노트 | Understanding Serial LVDS Capture in High-Speed ADCs | 2013. 7. 10 |
설계 및 개발
추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.
AFE5809EVM — AFE5809 평가 모듈
AFE5809는 뛰어난 성능과 작은 크기가 필요한 초음파 시스템을 위해 특별히 설계된 고집적 아날로그 프론트 엔드(AFE) 솔루션입니다. AFE5809은 완전한 타임 게인 제어(TGC) 영상 경로와 연속파 도플러(CWD) 경로를 통합하였습니다. 또한, 시스템 성능을 최적화하기 위해 다양한 전원/잡음 조합 중 하나를 선택할 수 있는 기능이 포함되어 있습니다. 따라서 AFE5809는 하이엔드 시스템뿐 아니라 휴대용 시스템에 적합한 초음파 아날로그 프론트 엔드 솔루션입니다.
DATACONVERTERPRO-SW — 고속 데이터 컨버터 프로 GUI 설치 프로그램, v5.31
이 고속 데이터 컨버터 프로 GUI는 대부분의 TI 고속 데이터 컨버터 [ADC(아날로그-디지털 컨버터) 및 DAC(디지털-아날로그 컨버터)] 및 AFE(아날로그 프론트 엔드) 플랫폼을 평가할 수 있도록 설계된 PC(Windows® XP/7/10 호환) 프로그램입니다. 전체 TSW14xxx 시리즈의 데이터 캡처 및 패턴 생성 카드를 지원하도록 설계된 DATACONVERTERPRO-SW는 시간 및 주파수 영역 모두에서 데이터 컨버터를 분석할 수 있는 강력하고 빠른 솔루션과 단일 톤, 멀티톤 및 변조 신호 지원을 제공합니다. 또한 이 (...)
SLOC276 — AFE5809EVM GUI
TIDA-00419 — 8채널 아날로그 프론트 엔드를 사용하는 SONAR 리시버 경로 서브시스템 레퍼런스 디자인
This reference design is a demonstration of a SONAR receive-path sub-system using the integrated analog front end (AFE) AFE5809. AFE5809 features eight channels of analog signal conditioning (LNA + VCAT + PGA) and digital processing (ADC + digital demodulator) that brings a high (...)
| 패키지 | 핀 | CAD 기호, 풋프린트 및 3D 모델 |
|---|---|---|
| NFBGA (ZCF) | 135 | Ultra Librarian |
주문 및 품질
권장 제품에는 본 TI 제품과 관련된 매개 변수, 평가 모듈 또는 레퍼런스 디자인이 있을 수 있습니다.