|
|
PDF AD9670 Data sheet ( Hoja de datos )
| Número de pieza | AD9670 | |
| Descripción | Octal Ultrasound AFE | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AD9670 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Data Sheet
FEATURES
8 channels of LNA, VGA, antialiasing filter, ADC, and digital
demodulator/decimator
Low power
150 mW per channel, time gain compensation (TGC) mode,
40 MSPS
62.5 mW per channel, continuous wave (CW) mode;
<30 mW in power-down mode
10 mm × 10 mm, 144-ball CSP_BGA
TGC channel, input referred noise voltage: 0.82 nV/√Hz,
maximum gain
Flexible power-down modes
Fast recovery from low power standby mode: <2 μs
Low noise preamplifier (LNA)
Input noise voltage: 0.78 nV/√Hz, gain = 21.6 dB
Programmable gain: 15.6 dB/17.9 dB/21.6 dB
0.1 dB input compression point: 1.00 V p-p/0.75 V p-p/
0.45 V p-p
Flexible active input impedance matching
Variable gain amplifier (VGA)
Attenuator range: 45 dB, linear-in-dB gain control
Postamplifier gain (PGA): 21 dB/24 dB/27 dB/30 dB
Antialiasing filter
Programmable, second-order low-pass filter from 8 MHz to
18 MHz or 13.5 MHz to 30 MHz and high-pass filter
Analog-to-digital converter (ADC)
Signal-to-noise ratio (SNR): 75 dB, 14 bits up to 125 MSPS
Configurable serial low voltage differential signaling (LVDS)
CW mode harmonic rejection I/Q demodulator
Individual programmable phase rotation
Dynamic range per channel: >160 dBFS/√Hz
Close in SNR: 156 dBc/√Hz, 1 kHz offset, −3 dBFS
Digital demodulator/decimator
I/Q demodulator with programmable oscillator FIR
decimation filter
APPLICATIONS
Medical imaging/ultrasound
Nondestructive testing (NDT)
Octal Ultrasound AFE
with Digital Demodulator
AD9670
GENERAL DESCRIPTION
The AD9670 is designed for low cost, low power, small size, and
ease of use for medical ultrasound applications. It contains eight
channels of a VGA with an LNA, a CW harmonic rejection I/Q
demodulator with programmable phase rotation, an antialiasing
filter, an ADC, and a digital demodulator and decimator for data
processing and bandwidth reduction.
Each channel features a maximum gain of up to 52 dB, a fully
differential signal path, and an active input preamplifier termination.
The channel is optimized for high dynamic performance and
low power in applications where a small package size is critical.
The LNA has a single-ended-to-differential gain that is selectable
through the serial port interface (SPI). Assuming a 15 MHz noise
bandwidth (NBW) and a 21.6 dB LNA gain, the LNA input SNR
is 94 dB. In CW Doppler mode, each LNA output drives an I/Q
demodulator that has independently programmable phase
rotation with 16 phase settings.
Power-down of individual channels is supported to increase
battery life for portable applications. Standby mode allows quick
power-up for power cycling. In CW Doppler operation, the
VGA, antialiasing filter, and ADC are powered down. The ADC
contains several features designed to maximize flexibility and
minimize system cost, such as a programmable clock, data
alignment, and programmable digital test pattern generation.
The digital test patterns include built-in fixed patterns, built-in
pseudorandom patterns, and custom user-defined test patterns
entered via the SPI.
Rev. A
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
AD9670
Data Sheet
SPECIFICATIONS
AC SPECIFICATIONS
AVDD1 = 1.8 V, AVDD2 = 3.0 V, DVDD = 1.4 V, DRVDD = 1.8 V, 1.0 V internal ADC reference, full temperature range (0°C to 85°C), fIN =
5 MHz, local oscillator (LO) band mode, RS = 50 Ω, RFB = ∞ (unterminated), LNA gain = 21.6 dB, LNA bias = midhigh, PGA gain = 27 dB,
analog gain control, VGAIN = (GAIN+) − (GAIN−) = 1.6 V, antialiasing filter, low-pass filter (LPF) cutoff = fSAMPLE/3 in Mode I/Mode II,
antialiasing filter LPF cutoff = fSAMPLE /4.5 in Mode III/Mode IV, high-pass filter (HPF) cutoff = LPF cutoff/12.00, Mode I = fSAMPLE = 40 MSPS,
Mode II = fSAMPLE = 65 MSPS, Mode III = fSAMPLE = 80 MSPS, Mode IV = 125 MSPS, radio frequency (RF) decimator bypassed, digital demod-
ulator and baseband decimator bypassed, digital high-pass filter bypassed, low power LVDS mode, unless otherwise noted. All gain setting
options are listed, which can be configured via SPI registers, and all power supply currents and power dissipations are listed for the four mode
settings (Mode I, Mode II, Mode III, and Mode IV), respectively, via slashes in Table 1.
Table 1.
Parameter1
LNA CHARACTERISTICS
Gain
0.1 dB Input Compression Point
1 dB Input Compression Point
Input Common Mode (LI-x, LG-x)
Output Common Mode
LO-x
LOSW-x
Input Resistance (LI-x)
Test Conditions/Comments
Single-ended input to differential output
Single-ended input to single-ended output
LNA gain = 15.6 dB
LNA gain = 17.9 dB
LNA gain = 21.6 dB
LNA gain = 15.6 dB
LNA gain = 17.9 dB
LNA gain = 21.6 dB
Switch off
Switch on
Switch off
Switch on
RFB = 300 Ω
RFB = 1350 Ω
Input Capacitance (LI-x)
Input Noise Voltage
Input Noise Current
FULL CHANNEL (TGC) CHARACTERISTICS
Antialiasing Filter Low-Pass Cutoff
In Range Antialiasing Filter
Bandwidth Tolerance
Group Delay Variation
Input Referred Noise Voltage
Noise Figure
Active Termination Matched
Unterminated
Correlated Noise Ratio
Output Offset
RS = 0 Ω
LNA gain = 15.6 dB
LNA gain = 17.9 dB
LNA gain = 21.6 dB
−3 dB, programmable, low band mode
−3 dB, programmable, high band mode
f = 1 MHz to 18 MHz, VGAIN = −1.6 V to +1.6 V
LNA gain = 15.6 dB
LNA gain = 17.9 dB
LNA gain = 21.6 dB
RS = 50 Ω
LNA gain = 15.6 dB, RFB = 150 Ω
LNA gain = 17.9 dB, RFB = 200 Ω
LNA gain = 21.6 dB, RFB = 300 Ω
LNA gain = 15.6 dB
LNA gain = 17.9 dB
LNA gain = 21.6 dB
No signal, correlated/uncorrelated
Min Typ
Max
15.6/17.9/21.6
9.6/11.9/15.6
1.00
0.75
0.45
1.20
0.90
0.60
2.2
High-Z
1.5
High-Z
1.5
50
200
6
20
0.83
0.82
0.78
2.6
8
13.5
±10
±350
0.96
0.90
0.82
18
30
−100
5.6
4.8
3.8
3.2
2.9
2.6
−30
+100
Unit
dB
dB
V p-p
V p-p
V p-p
V p-p
V p-p
V p-p
V
Ω
V
Ω
V
Ω
Ω
kΩ
pF
nV/√Hz
nV/√Hz
nV/√Hz
pA/√Hz
MHz
MHz
%
ps
nV/√Hz
nV/√Hz
nV/√Hz
dB
dB
dB
dB
dB
dB
dB
LSB
Rev. A | Page 4 of 52
5 Page 
AD9670
Data Sheet
MLO–
tMLO
MLO+
RESET–
RESET+
tSETUP
tHOLD
Figure 4. CW Doppler Mode Input MLO±, Continuous Synchronous RESET± Timing, Sampled on the Falling MLO± Edge, 8LO Mode
MLO–
MLO+
RESET–
RESET+
tMLO
tSETUP
tHOLD
Figure 5. CW Doppler Mode Input MLO±, Pulse Synchronous RESET± Timing, 4LO/8LO/16LO Mode
MLO–
MLO+
RESET–
RESET+
tMLO
tHOLD
tSETUP
Figure 6. CW Doppler Mode Input MLO±, Pulse Asynchronous RESET± Timing, 4LO/8LO/16LO Mode
Rev. A | Page 10 of 52
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AD9670.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AD9670 | Octal Ultrasound AFE | Analog Devices |
| AD9671 | JESD204B Octal Ultrasound AFE | Analog Devices |
| AD9674 | Octal Ultrasound Analog Front End | Analog Devices |
| AD9675 | Octal Ultrasound AFE | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |