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| 型号： | MAX2016ETI+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC DETECT/CNTRL LOG 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 频率： | 30kHz ~ 2.5GHz |
| RF 型： | 手机，GSM，EDGE，CDMA |
| 输入范围： | -70dBm ~ 10dBm |
| 精确度： | ±1dB |
| 电源电压： | 2.7 V ~ 5.25 V |
| 电流 - 电源： | 16mA |
| 包装： | 管件 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 产品目录页面： | 1422 (CN2011-ZH PDF) |
LF-to-2.5GHz Dual Logarithmic Detector/
Controller for Power, Gain, and VSWR Measurements
CSETH
MAX2016
COR
RFINA LOGARITHMIC
DETECTOR
CSETL
RFINB LOGARITHMIC
DETECTOR
OUTD
SETD
20k Ω
RF BLOCK
COUPLER
IN
COUPLER
OUT
Figure 8. Window Comparators Monitoring Mode. COR goes high if OUTD drops below CSETL or rises above CSETH.
Comparators/Window Detectors
The MAX2016 integrates two comparators for use in
monitoring the difference in power levels (gain) of
RFINA and RFINB. The thresholds of the two compara-
tors are set to the voltage applied to the CSETL and
CSETH pins. The output of each comparator can be
monitored independently or from the COR output that
ORs the outputs of the individual comparators. This can
be used for a window-detector function.
These comparators can be used to trigger hardware
interrupts, allowing rapid detection of over-range condi-
tions. These comparators are high-speed devices.
Connect high-value bypass capacitors (0.1μF) between
each comparator threshold input (CSETL and CSETH)
to ground to provide a solid threshold voltage at high
switching speeds.
Some applications may benefit from the use of hystere-
sis in the comparator response. This can be useful for
prevention of false triggering in the presence of small
noise perturbations in the signal levels, or with signals
with large amplitude modulation. To introduce hysteresis
into the comparator output, connect a feedback resistor
from COUTL to CSTEL. Select the value of this resistor,
in combination with the resistive-divider values used to
set threshold-level CSETL, to set the amount of hystere-
sis. Set the parallel combination of resistors connected
to CSETL to be less than 10k Ω for best performance.
Figure 8 illustrates the use of these comparators in a
gain-monitoring application. The low comparator has its
threshold (CSETL) set at a low-gain trip point. If the
gain drops below this trip point, the COUTL output
goes from a logic 0 to a logic 1. The high comparator
has its threshold (CSETH) set at a high trip point. If the
gain exceeds this trip point, the COUTH output goes
from logic 0 to logic 1. The window comparator output
(COR) rests a logic 0 if the gain is in the acceptable
range, between CSETL and CSETH. It goes to a logic 1
if the gain is either above or below these limits.
Power-Supply Connection
The MAX2016 is designed to operate from a single
+2.7V to +3.6V supply. To operate under a higher sup-
ply voltage range, a resistor must be connected in series
with the power supply and V CC to reduce the voltage
delivered to the chip. For a +4.75V to +5.25V supply,
use a 37.4 Ω (±1%) resistor in series with the supply.
Layout Considerations
A properly designed PCB is an essential part of any
RF/microwave circuit. Keep RF signal lines as short as
possible to reduce losses, radiation, and inductance.
For the best performance, route the ground pin traces
directly to the exposed pad under the package. The
PCB exposed pad MUST be connected to the ground
plane of the PCB. It is suggested that multiple vias be
used to connect this pad to the lower level ground
16
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2016ETI+ | 功能描述:射频检测器 LF-2.5GHz Dual Log Detector/Controller RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
| MAX2016ETI+D | 制造商:Maxim Integrated Products 功能描述:DUAL LOGARITHMIC DETECTOR/CNTRLR 28TQFN EP - Rail/Tube |
| MAX2016ETI+T | 功能描述:射频检测器 LF-2.5GHz Dual Log Detector/Controller RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
| MAX2016ETI+TD | 制造商:Maxim Integrated Products 功能描述:DUAL LOGARITHMIC DETECTOR/CNTRLR TQFN EP - Tape and Reel |
| MAX2016ETI-T | 功能描述:射频检测器 LF-2.5GHz Dual Log Detector/Controller RoHS:否 制造商:Skyworks Solutions, Inc. 配置: 频率范围:650 MHz to 3 GHz 最大二极管电容: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SC-88 封装:Reel |
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