參數(shù)資料
型號(hào)： MAX1441GUP/V+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 41/41頁(yè)
文件大?。?/td> 0K
描述： IC PROXMITY SENSOR 2CH 20-TSSOP
其它有關(guān)文件： Automotive Product Guide
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 74
類(lèi)型： 觸控式傳感器
輸入類(lèi)型： 數(shù)字
輸出類(lèi)型： 數(shù)字
接口： JTAG，串行
電流 - 電源： 100µA
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 管件
MAX1441
Automotive, Two-Channel Proximity and
Touch Sensor
9
the microcontroller can use the OUT1 or OUT2 pins to
signal the event to external modules. The GPIOs can
also provide system or configuration inputs to the micro-
controller.
The device has a power-saving standby mode for
power-sensitive applications. In the standby mode, the
microcontroller is powered down (CPU stop mode) and
the analog front-end runs conversions at a reduced
and programmable rate. A programmable hardware
discriminator monitors the C2D converters outputs and
brings the device out of standby mode when a potential
object-proximity event is detected. The microcontroller
can then analyze the capacitance data and validate the
object-proximity event.
The on-chip watchdog timer requires periodic servicing
from the microcontroller to ensure proper and continuous
operation. The watchdog timer resets the microcontroller
if it is not serviced. This prevents the microcontroller
from permanently hanging up due to unpredicted code
behavior.
The device features an on-chip voltage regulator allowing
the part to operate with a wide range of power-supply
voltage inputs: 5V to 28V with protection up to 45V. The
regulator provides power for all the circuits making the
device a very compact single-chip solution.
Control Registers
The device's analog front-end is controlled by a number
of control registers. The C2D conversion results and
the AFE status are accessible through status and result
registers. All AFE registers are available in the micro-
controller data space. The control registers support read
and write operations. The status and result registers are
read-only registers.
Communication between the CPU and the external inter-
face and AFE registers is performed using read/write
operations to CPU special-function registers (SFRs).
The SFRs are organized in three sections (Section
I–Section III); each section consists of six modules
(M0–M5). Table 1 shows the location of each SFR within
the SFR sections (see the Detailed Description for more
details).
Sensed Capacitance Range
The sensed capacitance range can be set independent-
ly for both channels. After power-up, the range is set to
20pF in both channels.
Figure 2. Capacitive-Sensing Function
MAX1441
EXCITATION: SINUSOIDAL
VOLTAGE SOURCE
CURRENT FLOW INTO
CAPACITANCE IC
SENSED OBJECT
GROUND
SIGNAL
ELECTRIC
FIELD
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1441IUP+ 功能描述:電容觸摸傳感器 RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
MAX1441IUP+T 功能描述:電容觸摸傳感器 RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍:
MAX1444EHJ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1444EHJ/V+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC ANALOG TO DIGITAL CONVERTER RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX1444EHJ/V+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 40Msps 3.0V Low-Power ADC with Internal Reference RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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