AFE5832 Datasheet, PDF (1/9 Pages) Texas Instruments – 32-Channel Ultrasound AFE With 42-mW/Channel Power, 12-Bit, 40-MSPS or 10-Bit, 50-MSPS Output, Passive CW Mixer and LVDS Interface

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AFE5832
SBOS887 – AUGUST 2017
AFE5832 32-Channel Ultrasound AFE With 42-mW/Channel Power,
1.4 nV/√Hz Noise, 12-Bit, 40-MSPS or 10-Bit, 50-MSPS Output, Passive CW Mixer and
LVDS Interface
1 Features
• 32-Channel, AFE for Ultrasound Applications:
– Input Attenuator, LNA, LPF, ADC,
and CW Mixer
– Digital Time Gain Compensation (DTGC)
– Total Gain Range: 12 dB to 51 dB
– Linear Input Range: 400 mV_PP
• Input Attenuator With DTGC:
– 8-dB to 0-dB Attenuation With 0.125-dB Step
– Supports Matched Impedance for:
– 50-Ω to 800-Ω Source Impedance
• Low-Noise Amplifier (LNA) With DTGC:
– 20-dB to 51-dB Gain With 0.125-dB Step
– Low Input Current Noise: 1.2 pA/√Hz
• 3rd-Order, Linear-Phase, Low-Pass Filter (LPF):
– 5 MHz, 7.5 MHz, 10 MHz, and 12.5 MHz
• 16 ADCs Converting at 12-Bit, 80 MSPS or 10-bit,
100 MSPS:
– Each ADC Converts Two Sets of Inputs at Half
Rate
– 12-Bit ADC: 72-dBFS SNR
– 10-Bit ADC: 61-dBFS SNR
• Optimized for Noise and Power:
– 42 mW/Ch at 1.4 nV/√Hz, 40 MSPS
– 52 mW/Ch at 1.3 nV/√Hz, 40 MSPS
– 60 mW/Ch in CW Mode
• Excellent Device-to-Device Gain Matching:
– ±0.5 dB (Typical)
1
• Low Harmonic Distortion: –55 dBc
• Fast and Consistent Overload Recovery
• Continuous Wave (CW) Path With:
– Low Close-In Phase Noise of –151 dBc/Hz
at 1-kHz Frequency Offset Off 2.5-MHz Carrier
– Phase Resolution: λ / 16
– Supports 16X CW Clock
– 12-dB Suppression on Third and Fifth
Harmonics
• LVDS Interface With a Speed Up to 1 Gbps
• Small Package: 15-mm × 15-mm NFBGA-289
2 Applications
• Medical Ultrasound Imaging
• Nondestructive Evaluation Equipment
• Sonar Imaging Equipment
• Multichannel, High-Speed Data Acquisition
3 Description
The AFE5832 device is a highly-integrated, analog
front-end solution specifically designed for ultrasound
systems where high performance, low power, and
small size are required.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
AFE5832
NFBGA (289)
15.00 mm × 15.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
Simplified Block Diagram
SPI IN
SPI Logic
INP
ATTEN
8 dB
to
0 dB
INM
LNA
20 dB to
51 dB
3^rd-Order LPF with
5 MHz, 7.5 MHz,
10 MHz, and 12.5 MHz
10- or
12-Bit
ADC
Digital
Processing
LVDS
TGC Control
Signals
DTGC Engine
Cross-Point
Switch
16-Phase
Generator
CW Clocks
CW Mixer
CW Current Outputs
Reference
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.