Texas Instruments | 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 (Rev. A) | Datasheet | Texas Instruments 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 (Rev. A) Datasheet

Texas Instruments 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 (Rev. A) Datasheet
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AFE5828
SBAS865A – JULY 2017 – REVISED OCTOBER 2017
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
1
1 Features
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•
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•
•
•
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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
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
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2 Applications
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Medical Ultrasound Imaging
Nondestructive Evaluation Equipment
Sonar Imaging Equipment
3 Description
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.
Device Information(1)
PART NUMBER
AFE5828
PACKAGE
BODY SIZE (NOM)
nFBGA (289)
15.00 mm × 15.00 mm
(1) For all available packages, see the package option addendum
at the end of the datasheet.
SPACE
Simplified Block Diagram
SPI OUT
SPI IN
SPI Logic
LNA IN
LNA
15 dB to
21 dB
VCAT
0 dB to -36 dB
PGA
18 dB to 27 dB
In Step of 3 dB
3rd-Order LPF
with 10 MHz to
30 MHz Corner
Frequency
12-, 14-Bit
ADC
Digital
Processing
(Optional)
LVDS
LVDS
OUTPUTS
16X CLK
16 Phases
Generator
CW Mixer
Summing
Amplifier
Reference
Reference
1 of 16 Channels
1X CLK
16 x 16
Crosspoint SW
1X CLK
CW I/Q
OUTPUT
Differential
TGC VCNTL
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.
AFE5828
SBAS865A – JULY 2017 – REVISED OCTOBER 2017
www.ti.com
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (July 2017) to Revision A
•
2
Page
Changed Op Temp in Package Information table ................................................................................................................. 4
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Product Folder Links: AFE5828
AFE5828
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SBAS865A – JULY 2017 – REVISED OCTOBER 2017
5 Description (continued)
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 voltagecontrolled 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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AFE5828
SBAS865A – JULY 2017 – REVISED OCTOBER 2017
www.ti.com
6 Device and Documentation Support
6.1 Documentation Support
6.1.1 Related Documentation
For related documentation see the following:
• AFE5818 16-Channel, Ultrasound, Analog Front-End with 140-mW/Channel Power, 0.75-nV/√Hz Noise, 14Bit, 65-MSPS or 12-Bit, 80-MSPS ADC, and Passive CW Mixer
• AFE5816 16-Channel Ultrasound AFE with 90-mW/Channel Power, 1-nV/√Hz Noise, 14-Bit, 65-MSPS or 12Bit, 80-MSPS ADC and Passive CW Mixer
• AFE58JD18 16-Channel, Ultrasound AFE with 14-Bit, 65-MSPS or 12-Bit, 80-MSPS ADC, Passive CW Mixer,
I/Q Demodulator, and LVDS, JESD204B Outputs
• TLV5626 2.7-V to 5.5-V Low-Power Dual 8-Bit Digital-to-Analog Converter With Internal Reference and
Power Down
• DAC7821 12-Bit, Parallel Input, Multiplying Digital-to-Analog Converter
• THS413x High-Speed, Low-Noise, Fully-Differential I/O Amplifiers
• OPA1632 High-Performance, Fully-Differential Audio Operational Amplifier
• Wideband Differential Transimpedance DAC Output
• LMK0482x Ultra Low-Noise JESD204B Compliant Clock Jitter Cleaner with Dual Loop PLLs
• CDCM7005 3.3-V High Performance Clock Synchronizer and Jitter Cleaner
• CDCE72010 Ten Output High Performance Clock Synchronizer, Jitter Cleaner, and Clock Distributor
• OPA2x11 1.1-nv/√Hz Noise, Low Power, Precision Operational Amplifier
• ADS8413 16-Bit, 2-MSPS, LVDS Serial Interface, SAR Analog-to-Digital Converter
• ADS8472 16-Bit, 1-MSPS, Pseudo-Bipolar, Fully Differential Input, Micropower Sampling Analog-to-Digital
Converter With Parallel Interface, Reference
• Clocking High-Speed Data Converters Technical Brief
• ISO724x High-Speed, Quad-Channel Digital Isolators
• SN74AUP1T04 Low Power, 1.8/2.5/3.3-V Input, 3.3-V CMOS Output, Single Inverter Gate
• MicroStar BGA Packaging Reference Guide
6.2 Trademarks
All trademarks are the property of their respective owners.
6.3 Electrostatic Discharge Caution
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
6.4 Glossary
SLYZ022 — TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
7 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
4
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AFE5828
www.ti.com
SBAS865A – JULY 2017 – REVISED OCTOBER 2017
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5
PACKAGE OPTION ADDENDUM
www.ti.com
12-Oct-2017
PACKAGING INFORMATION
Orderable Device
Status
(1)
AFE5828ZAV
ACTIVE
Package Type Package Pins Package
Drawing
Qty
NFBGA
ZAV
289
126
Eco Plan
Lead/Ball Finish
MSL Peak Temp
(2)
(6)
(3)
Green (RoHS
& no Sb/Br)
SNAGCU
Level-3-260C-168 HR
Op Temp (°C)
Device Marking
(4/5)
0 to 85
AFE5828
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3)
MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5)
Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6)
Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
Addendum-Page 1
Samples
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