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参数资料
| 型号： | MAX13037ATX+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/22页 |
| 文件大小： | 0K |
| 描述： | IC AUTO CONTACT MONITOR 36-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 自动 |
| 接口： | SPI |
| 电源电压： | 6 V ~ 26 V |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
MAX13037/MAX13038
Automotive Contact Monitor and
Level Shifters with LDO Regulator
16
______________________________________________________________________________________
Notes:
Bit 15: Wetting Current Mode (WTOFF)
Set the WTOFF bit to configure the wetting currents as
continuous on closed switches. Clear the WTOFF bit to
configure the wetting current as a pulse where the wet-
ting current is turned on for a set duration of 20ms after
a switch closes (and the debounce is timed out). After
20ms elapses, the wetting current is turned off. Either
wetting current mode is only applicable to switches that
have wetting currents enabled (see WEN and WEND
bits). In scan mode, the wetting currents are on for the
polling time of 250s (typ) and are pulsed at the pro-
grammed scanning period. When WTOFF is set, the
wetting current continuously pulses at the programmed
scanning period. When WTOFF is cleared, the wetting
current pulses at the programmed scanning period, but
turns off after 20ms elapses.
Bits 14, 13, 12: Scanning Period (SC2, SC1, SC0)
The SC2, SC1, and SC0 bits are used to program the
scanning period as depicted in Table 3. Switch inputs
are simultaneously polled for a finite duration of 250s
(typ), and polling occurs at a period selected through
the SC2, SC1, and SC0 inputs. Figure 8 shows a timing
diagram of switch scanning and sampling. When the
inputs are not being polled, the sense resistors are dis-
connected, reducing the current consumption caused
from polling closed switches. For a continuous scanning
period ([SC2:SC1:SC0] = [1:1:1] or [1:1:0]), the switch
inputs are constantly being monitored and the sense
resistors are always connected. The state [SC2:SC1:SC0]
= [1:1:0] also disables adjustable hysteresis (normally set
by RHYST) and fixes hysteresis at 0.166 x VBATREF. When
adjustable hysteresis is not needed, it is recommended to
disable this feature to reduce power consumption.
Bit 11: Global Wetting Current Enable (WEN)
The WEN bit is a global enable for the wetting currents
on all the channels. Set the WEN bit to enable wetting
currents on all channels and clear the WEN bit to dis-
able wetting currents. Even with wetting currents glob-
ally enabled, the wetting currents and sense resistors
on IN0 and IN1 can still be turned off with the WEND bit
(see Table 4).
Bit 10: IN0 and IN1 Wetting Current Enable (WEND)
The WEND bit is used to turn on wetting currents and
sense resistors on inputs IN0 and IN1. Set the WEND
bit to enable wetting currents on IN0 and IN1 and clear
the WEND bit to turn off the wetting current and sense
resistors on IN0 and IN1. When the wetting currents
and sense resistors are disabled (WEND = 0), IN0 and
IN1 are configured as direct inputs with level-shifted
outputs on DO0 and D01. DO0 and DO1 can only be
used as level-shifted outputs in normal mode and are
three-stated in scan mode (see the
Scan Mode sec-
tion). Note that both the WEN and WEND bits need to
be set for wetting currents to be enabled on IN0 and
Table 3. Programmable Scanning Period
SC2
SC1
SC0
SCANNING PERIOD (ms)
00
0
64
00
1
32
01
0
16
01
1
8
10
0
4
10
1
2
11
0
Continuous/adjustable
hysteresis off
1
Continuous
GND-CONNECTED
SWITCH INPUT
SWITCHES ARE
POLLED FOR 250
μs
SWITCH
DEBOUNCE
STARTS
INT
tSCAN
tSCAN-P
tDEB
SWITCH
CLOSES
STATUS REGISTERS AND
INT ARE UPDATED
AFTER tDEB
Figure 8. Switch Sampling in Scan Mode
Table 4. Truth Table for WEN and WEND
WEN
WEND
WETTING CURRENT
(IN0, IN1)
16k
Ω SENSE RESISTOR
(IN0, IN1)
WETTING CURRENT
(IN2–IN7)
16k
Ω SENSE RESISTOR
(IN2–IN7)
0
Off
On
0
1
Off
On
Off
On
1
0
Off
On
1
On
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相关代理商/技术参数 |
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|---|---|
| MAX13038ATI+ | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX13038ATI+T | 制造商:Maxim Integrated Products 功能描述:AUTOMOTIVE CONTACT MONITOR AND LEVE - Tape and Reel |
| MAX13038ATX+ | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX13038ATX+T | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX1303AEUP | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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