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参数资料
| 型号： | MAX3543EVKIT+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT MAX3543 |
| 标准包装： | 1 |
| 系列： | * |
Multiband Analog and
Digital Television Tuner
Table 26. ROM Tabl e
BIAS
DESCRIPTION
ADDR MSB
0x0
Unused
DATA BYTE
BIAS[3:0]
LSB
VHF-Low Tracking Filter.
VLS0, VLS1, VLP0, VLP1
VHF-High Tracking Filter.
VHS0, VHS1, VHP0, VHP1
UHF Tracking Filter.
US0, US1, UP0, UP1
IF Filter
IRHR
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
0xB
VLS0[5]
VLS1[3]
VLP0[1]
VHS0[5]
VHS1[3]
VHP0[1]
US0[5]
US1[3]
UP0[1]
Unused
IRHR[7]
VLS0[4]
VLS1[2]
VLP0[0]
VHS0[4]
VHS1[2]
VHP0[0]
US0[4]
US1[2]
UP0[0]
Unused
IRHR[6]
VLS0[3]
VLS1[1]
VLP1[5]
VHS0[3]
VHS1[1]
VHP1[5]
US0[3]
US1[1]
UP1[5]
C[5]
IRHR[5]
VLS0[2]
VLS1[0]
VLP1[4]
VHS0[2]
VHS1[0]
VHP1[4]
US0[2]
US1[0]
UP1[4]
C[4]
IRHR[4]
VLS0[1]
VLP0[5]
VLP1[3]
VHS0[1]
VHP0[5]
VHP1[3]
US0[1]
UP0[5]
UP1[3]
C[3]
IRHR[3]
VLS0[0]
VLP0[4]
VLP1[2]
VHS0[0]
VHP0[4]
VHP1[2]
US0[0]
UP0[4]
UP1[2]
C[2]
IRHR[2]
VLS1[5]
VLP0[3]
VLP1[1]
VHS1[5]
VHP0[3]
VHP1[1]
US1[5]
UP0[3]
UP1[1]
C[1]
IRHR[1]
VLS1[4]
VLP0[2]
VLP1[0]
VHS1[4]
VHP0[2]
VHP1[0]
US1[4]
UP0[2]
UP1[0]
C[0]
IRHR[0]
Reserved
0xC
Reserved Reserved Reserved Reserved
Reserved
Reserved
Reserved
Reserved
Setting RF Tracking Filter Codes
The MAX3543 includes a programmable tracking filter
for each band of operation to optimize rejection of out-
of-band interference while minimizing insertion loss for
the desired received signal. The center frequency of
each tracking filter is selected by a switched-capacitor
array that is programmed by the TFS[7:0] bits in the R06
register and the TFP[5:0] bits in the R07 register.
Optimal tracking filter settings for each channel vary from
part to part due to process variations. To accommodate
part-to-part variations, each part is factory calibrated by
Maxim. During calibration the correction factors for the
series and parallel tracking capacitor arrays are calculat-
ed and written into an internal ROM table. The user must
read the ROM table upon power-up and store the data
in local memory (8 bytes total) to calculate the optimal
TFS and TFP settings for each channel. The equation for
setting TFS and TFP at each channel is available in the
device driver code provided by Maxim. Table 26 shows
the address and bits for each ROM table entry.
Layout Recommendations
IMPORTANT: The MAX3543 includes on-chip tracking
filters that utilize external inductors placed on the PCB
at pins 30 through 37. Because the tracking filters oper-
ate at frequencies up to 862MHz, they are sensitive to
the inductor and PCB trace parasitics. To achieve the
optimal RF performance (gain, noise figure, and image
rejection), MAX3543 is production tested and trimmed
with the exact same inductors, their relative location
and orientation, and the trace parasitics present on the
MAX3543 Reference Design. To avoid performance deg-
radation, PCB designs should exactly copy the RF sec-
tion of the Reference Design layout and use the induc-
tors specified in the Reference Design bill of materials.
Contact Maxim to obtain the Reference Design layout to
use as a starting point for PCB designs.
In addition to the aforementioned requirements, follow
general good RF layout practices. Keep RF signal lines
as short as possible to minimize losses and radiation.
Use controlled impedance on all high-frequency traces.
The exposed paddle must be soldered evenly to the
board’s ground plane for proper operation. Use abun-
dant vias beneath the exposed paddle and maximize
the area of continuous ground plane around the paddle
on the bottom layer for maximum heat dissipation. Use
abundant ground vias between RF traces to minimize
undesired coupling.
To minimize coupling between different sections of the
IC, the ideal power-supply layout is a star configura-
tion, which has a large decoupling capacitor at the
central V CC node. The V CC traces branch out from this
node, with each trace going to separate V CC pins of the
MAX3543. Each V CC pin must have a bypass capacitor
with a low impedance to ground at the frequency of inter-
est. Do not share ground vias among multiple connec-
tions to the PCB ground plane.
18
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相关代理商/技术参数 |
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| MAX3543EVKIT+ | 功能描述:射频开发工具 MAX3542/3 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MAX3544CTL+ | 制造商:Maxim Integrated Products 功能描述:EVKIT FOR DIGITAL TV TUNER - Rail/Tube |
| MAX3544CTL+T | 制造商:Maxim Integrated Products 功能描述:MULTIBAND DIGITAL TELEVISION TUNER - Tape and Reel |
| MAX354C/D | 功能描述:多路器开关 IC RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
| MAX354CPE | 功能描述:多路器开关 IC 8:1 Fault-Protected Analog MUX RoHS:否 制造商:Texas Instruments 通道数量:1 开关数量:4 开启电阻（最大值）:7 Ohms 开启时间（最大值）: 关闭时间（最大值）: 传播延迟时间:0.25 ns 工作电源电压:2.3 V to 3.6 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UQFN-16 |
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