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參數(shù)資料
| 型號： | MAX2038CCQ+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC VGA W/OCTAL MIXER 8CH 100TQFP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 250 |
| 類型： | 可變增益放大器 |
| 應用： | 醫(yī)療用超聲波成像，聲納 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-TQFP 裸露焊盤 |
| 供應商設備封裝： | 100-TQFP-EP（14x14） |
| 包裝： | 帶卷 (TR) |
MAX2038
Ultrasound VGA Integrated
with CW Octal Mixer
16
______________________________________________________________________________________
CW Mixer Output Summation
The outputs from the octal mixer array are summed
internally to produce the total CWD summed beam-
formed signal. The octal array produces eight differen-
tial quadrature (Q) outputs and eight differential
in-phase (I) outputs. All quadrature and in-phase out-
puts are summed into single I and Q differential current
outputs (CW_QOUT+, CW_QOUT-, CW_IOUT+,
CW_IOUT-).
LO Phase Select
The LO phase dividers can be programmed through the
shift registers to allow for 4, 8, or 16 quadrature phases
for a complete CW beamforming solution.
CWD Beamforming Modes
There are four separate modes of operating the CWD
beamformer. See Table 1 for a summary of the different
modes of operation. The mode of operation can be
selected by the CW_M1 and CW_M2 logic inputs. Phase
generation is controlled through the serial interface. See
the
Serial Interface section in the Applications
Information section for details on how to program for dif-
ferent quadrature phases.
Mode 1
For mode 1 operation, the LO_LVDS input frequency is
typically 16 x fLO. As the CWD LO frequency range is
1MHz to 7.5MHz, the input frequency ranges from
16MHz to 120MHz. This high LO clock frequency
requires a differential LVDS input. The 16 x fLO input is
then divided by 16 to produce 16 phases. These 16
phases are generated for each of the 8 channels and
programmed for the selected phase by a serial shift
register. Each channel has a corresponding 5-bit shift
register, which is used to program the output phase of
the divide-by-16 circuit. The first 4 bits of the shift regis-
ter are for programming the 16 phases, the fifth bit
turns each channel on/off individually. For mode 1, set
both CW_M1 and CW_M2 to a logic-low.
CW_M1
CW_M2
MODE
LO INPUT
FREQUENCY
CLOCK
INTERFACE
PHASE
RESOLUTION
NO. OF
CLOCK
INPUTS
PER CHIP
PROGRAM
BY SERIAL
SHIFT
REGISTER
(SSR)
NO. OF
USEFUL
BITS IN
SSR
NO. OF
DON’T-
CARE BITS
IN SSR
0
1
16 x
LVDS
16 phases
1
Yes
4
0
1
2
8 x
LVDS
8 phases
1
Yes
3
1 MSB
1
0
3
4 x
3V CMOS
4 phases
8
Yes
2
2 MSBs
1
4
4 x
3V CMOS
Quadrature
provided
8
No
N/A
Table 1. Summary of CWD Beamforming Methods
MODE 1
CW_M1 = 0
CW_M2 = 0
MSB
LSB
SHUTDOWN
DC
B
A
SD
PHASE
(DEG)
(B0)
(B1)
(B2)
(B3)
(B4)
0
0/1
22.5
0
1
0/1
45
0
1
0
0/1
67.5
0
1
0/1
90
0
1
0
0/1
112.5
0
1
0
1
0/1
135
0
1
0
0/1
157.5
0
1
0/1
180
1
0
0/1
202.5
1
0
1
0/1
225
1
0
1
0
0/1
247.5
1
0
1
0/1
270
1
0
0/1
292.5
1
0
1
0/1
315
1
0
0/1
337.5
1
0/1
Table 2. Mode 1 Logic Table (B4 = 0:
Channel On/B4 = 1: Channel Off)
N/A = Not applicable.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2038EVKIT | 制造商:Maxim Integrated Products 功能描述:ULTRASOUND VARIABLE-GAIN AMPLIFIER WITH CWD (12B COMPATIBLE - Boxed Product (Development Kits) |
| MAX2038混頻器 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| MAX2039 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX2039_1 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit |
| MAX2039ETP | 功能描述:射頻混合器 1.7GHz-2.2GHz Up/Down Mixer RoHS:否 制造商:NXP Semiconductors 頻率范圍: 轉換損失——最大: 工作電源電壓:6 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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