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參數(shù)資料
| 型號(hào)： | MAX2078CTK+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 9/26頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FRNT-END ULTRASOUND 8CH 68QFN |
| 應(yīng)用說明： | Ultrasound Imaging Systems Application Note |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 特色產(chǎn)品： | MAX2078 Octal-Channel Ultrasound Front-End with CW Doppler Mixers |
| 標(biāo)準(zhǔn)包裝： | 30 |
| 類型： | 超聲波接收器 |
| 應(yīng)用： | 醫(yī)療用超聲波成像，聲納 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 68-TQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 68-TQFN-EP（10x10） |
| 包裝： | 管件 |
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Low-Noise Amplifier (LNA)
The MAX2078’s LNA is optimized for excellent dynamic
range and linearity performance characteristics, making it
ideal for ultrasound imaging applications. When the LNA
is placed in low-gain mode, the input resistance (RIN),
being a function of the gain A (RIN = RF/(1 + A)), increas-
es by a factor of approximately 2. Consequently, the
switches that control the feedback resistance (RF) have to
be changed. For instance, the 100
Ω mode in high gain
becomes the 200
Ω mode in low gain (see Table 2).
Variable-Gain Amplifier (VGA)
The MAX2078’s VGAs are optimized for high linearity,
high dynamic range, and low output-noise performance,
all of which are critical parameters for ultrasound imaging
applications. Each VGA path includes circuitry for adjust-
ing analog gain, as well as an output buffer with differen-
tial output ports (OUT_+, OUT_-) for driving ADCs. See
the
High-Level CW Mixer and Programmable Beamformer
Functional Diagram for details.
The VGA gain can be adjusted through the differential
gain control input VG+ and VG-. Set the differential gain
control input voltage at -3V for minimum gain and +3V for
maximum gain. The differential analog control common-
mode voltage is 1.65V (typ).
Overload Recovery
The device is also optimized for quick overload recovery
for operation under the large input signal conditions that
are typically found in ultrasound input buffer imaging
applications. See the
Typical Operating Characteristics
for an illustration of the rapid recovery time from a trans-
mit-related overload.
Octal Continuous-Wave (CW) Mixer
The MAX2078 CW mixers are designed using an active
double-balanced topology. The mixers achieve high
dynamic range and high linearity performance, with
exceptionally low thermal and jitter noise, ideal for ultra-
sound CWD signal reception. The octal quadrature
mixer array provides noise performance of 154dBc/Hz
at 1kHz offset from a 1.25MHz, 200mVP-P input clutter
signal and a two-tone third-order ultrasound-specific
intermodulation product of -48.5dBc (typ). See the
Ultrasound-Specific IMD3 Specification section.
The octal array exhibits quadrature and in-phase differ-
ential current outputs (CQ+, CQ-, CI+, CI-) to produce
the total CWD beamformed signal. The maximum differ-
ential current output is typically 3mAP-P and the mixer-
output compliance voltage ranges from 4.5V to 12V.
MAX2078
Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
______________________________________________________________________________________
17
High-Level CW Mixer and Programmable Beamformer Functional Diagram
CHANNEL 1
I/Q PHASE
DIVIDER
SELECTOR
CHANNEL 2
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
5-BIT
SR
DIN
CS
CLK
DOUT
CLP
PD
LO+
LO-
CW_QOUT
CW_IOUT
CW_IN1
CW_IN3
CW_IN2
CW_IN5
CW_IN4
CW_IN7
CW_IN6
CW_IN8
IQ
CHANNEL 3
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
CHANNEL 4
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
CHANNEL 5
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
CHANNEL 6
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
CHANNEL 7
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
CHANNEL 8
I/Q PHASE
DIVIDER
SELECTOR
5
5-BIT
SR
IQ
MAX2078
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2078CTK+ | 功能描述:射頻前端 8Ch Ultrasound Front-End RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數(shù)據(jù)速率:54 Mbps 噪聲系數(shù): 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-32 |
| MAX2078CTK+T | 功能描述:射頻前端 8Ch Ultrasound Front-End RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數(shù)據(jù)速率:54 Mbps 噪聲系數(shù): 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-32 |
| MAX2078EVKIT | 功能描述:射頻前端 Ultrasound Integrated Analog Front End Octal LNA RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數(shù)據(jù)速率:54 Mbps 噪聲系數(shù): 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-32 |
| MAX2079 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:每個(gè)通道具有獨(dú)立的混頻器，以優(yōu)化CWD靈敏度 |
| MAX2079CXE+ | 功能描述:射頻接收器 8Ch Ultrasound Front End w/ADC+CW Doppler RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
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