AFE5809_14 Datasheet, PDF (1/100 Pages) Texas Instruments – Fully Integrated, 8-Channel Ultrasound Analog Front End With Passive CW Mixer, andD igital I/Q Demodulator

AFE5809
www.ti.com
SLOS738D – SEPTEMBER 2012 – REVISED JANUARY 2014
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
Check for Samples: AFE5809
FEATURES
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• 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 V_PP 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)
• 3^rd 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 (Max)
• 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 16X, 8X, 4X and 1X CW Clocks
– 12dB Suppression on 3^rd and 5^th Harmonics
– Flexible Input Clocks
• Small Package: 15 mm × 9 mm, 135-BGA
APPLICATIONS
• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipments
• Sonar Applications
SPI
SPI Logic
AFE5809 with Demodulator
1 of 8 Channels
IN
LNA
16X CLKP
16X CLKN
16 Phases
Generator
1X CLK
VCAT
0 to -40 dB
CW Mixer
PGA
24, 30dB
3^rd LP Filter
10, 15, 20, 30
MHz
14 Bit
ADC
Digital
DeMod &
LP Filter
Summing
Amplifier/ Filter
Reference
Reference
Logic
Control
LVDS LVDS
Serializer OUT
CW I/Q Vout
Differential
TGC Vcntl
EXT/INT
REFM/P
DeMod
Control
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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