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參數(shù)資料
| 型號(hào)： | MAX2078CTK+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 8/26頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC FRNT-END ULTRASOUND 8CH 68QFN |
| 應(yīng)用說(shuō)明： | Ultrasound Imaging Systems Application Note |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 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(pán) |
| 供應(yīng)商設(shè)備封裝： | 68-TQFN-EP（10x10） |
| 包裝： | 帶卷 (TR) |
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MAX2078
Octal-Channel Ultrasound Front-End
with CW Doppler Mixers
16
______________________________________________________________________________________
Detailed Description
The MAX2078 is a high-density, octal-channel ultra-
sound receiver optimized for low cost, high-channel
count, high-performance portable and cart-based ultra-
sound applications. The integrated octal LNA, VGA,
AAF, and programmable CWD beamformer offer a
complete multi-specialty, ultrasound receiver solution.
Imaging path dynamic range has been optimized for
exceptional second-harmonic performance. The com-
plete imaging receive channel exhibits an exceptional
68dBFS** SNR at 5MHz. The bipolar front-end has also
been optimized for exceptionally low near-carrier mod-
ulation noise for exceptional low-velocity pulsed and
color-flow Doppler sensitivity under high-clutter condi-
tions, achieving an impressive near-carrier SNR of
140dBc/Hz at 1kHz offset from a VOUT = 1VP-P, 5MHz
clutter signal.
The MAX2078 also integrates an octal quadrature
mixer array and programmable LO phase generators
for a complete continuous-wave Doppler (CWD) beam-
forming solution. Separate mixers for each channel are
available for optimal CWD sensitivity, yielding an
impressive SNR of 154dBc/Hz at 1kHz offset from a
200mVP-P, 1.25MHz input signal. The LO phase selec-
tion for each channel is programmed using a digital
serial interface and a single high-frequency clock. The
serial interface is designed to allow multiple devices to
be easily daisy-chained to minimize program interface
wiring. The outputs of the mixers are summed into sin-
gle I and Q differential current outputs.
Modes of Operation
The MAX2078 requires programming before it can be
used. The operating modes are controlled by 47 pro-
gramming bits. Tables 1 and 2 show the functions of
these programming bits.
BIT NAME
DESCRIPTION
D40, D41, D42
Input impedance programming
D43
LNA gain (D43 = 0 is low gain)
D44, D45
Anti-alias filter fC programming
D46
Don’t care
D0–D39
Beamformer programming, from channel 1 to 8
Table 1. Summary of Programming Bits
D46
D45
D44
D43
D42
D41
D40
MODE
X
1000
RIN = 50
Ω, LNA gain = 18.5dB
X
1001
RIN = 100
Ω
X
1010
RIN = 200
Ω
X
1011
RIN = 1000
Ω
X
0000
RIN = 100
Ω, LNA gain = 12.5dB
X
0001
RIN = 200
Ω
X
0010
RIN = 400
Ω
X
0011
RIN = 2000
Ω
X
1
X
Open feedback
X
0
XXXX
fC = 9MHz
X
0
1
XXXX
fC = 10MHz
X
1
0
XXXX
fC = 15MHz
X
1
XXXX
fC = 18MHz
Table 2. Logic Functions of Programming Bits
X = Don’t care.
**
When coupled with the MAX1437B ADC.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MAX2079CXE+T | 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 |
| MAX207C/D | 功能描述:RS-232接口集成電路 +5V RS-232 Transceiver with 0.1 Micro Farads External Capacitors RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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