参数资料
型号: MAX1253AEUE
厂商: MAXIM INTEGRATED PRODUCTS INC
元件分类: 电源管理
英文描述: Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
中文描述: 9-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封装: TSSOP-16
文件页数: 13/29页
文件大小: 439K
代理商: MAX1253AEUE
M
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and V
DD
Monitor
______________________________________________________________________________________
13
In differential mode, the T/H samples the difference
between two analog inputs, eliminating common-mode
DC offsets and noise. See the
Input Configuration
Register
section and Tables 5 and 6 for more details on
configuring the analog inputs.
Unipolar/Bipolar
When performing differential conversions, the input
configuration register (Tables 5 and 6) also selects
between unipolar and bipolar operation. Unipolar mode
sets the differential input range from 0 to V
REF.
A nega-
tive differential analog input in unipolar mode causes
the digital output code to be zero. Selecting bipolar
mode sets the differential input range to
±
V
REF
/2. The
digital output code is straight binary in unipolar mode
and two
s complement in bipolar mode (see the
Transfer Function
section).
In single-ended mode, the MAX1253/MAX1254 always
operate in unipolar mode. The analog inputs are inter-
nally referenced to GND with a full-scale input range
from 0 to V
REF.
Digital Interface
The MAX1253/MAX1254 digital interface consists of
five signals:
CS
, SCLK, DIN, DOUT, and INT.
CS
,
SCLK, DIN, and DOUT comprise an SPI
-compatible
serial interface (see the
Serial Digital Interface
section)
.
INT is an independent output that provides an indica-
tion that an alarm has occurred in the system (see the
INT Interrupt Output
section).
Serial Digital Interface
The MAX1253/MAX1254 feature a serial interface com-
patible with SPI, QSPI
, and MICROWIRE
devices.
For SPI/QSPI, ensure that the CPU serial interface runs
in master mode so it generates the serial clock signal.
Select a serial clock frequency of 10MHz or less, and
set clock polarity (CPOL) and phase (CPHA) in the μP
control registers to the same value, one or zero. The
MAX1253/MAX1254 support operation with SCLK idling
high or low, and thus operate with CPOL = CPHA = 0 or
CPOL = CPHA = 1.
T
T
T
T
H
H
H
V
AZ
V
DD
ADC
CHOLDP
CHOLD
CHOLDN
8-TO-1
DIFFERENTIAL
MUX
TEMP
DIFFERENTIAL INPUT EQUIVALENT INPUT CIRCUIT
T
T
H
H
V
AZ
V
DD
ADC
8-TO-1
DIFFERENTIAL
MUX
TEMP
SINGLE-ENDED INPUT EQUIVALENT INPUT CIRCUIT
Figure 5. Single-Ended/Differential Input Equivalent Input Circuit
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
相关PDF资料
PDF描述
MAX1253 Stand-Alone. 10-Channel. 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
MAX1254 Stand-Alone. 10-Channel. 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
MAX1253BEUE Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
MAX1254AEUE Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
MAX1254BEUE Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor
相关代理商/技术参数
参数描述
MAX1253AEUE+ 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
MAX1253AEUE+T 功能描述:模数转换器 - ADC NULL 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
MAX1253AEUE-T 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
MAX1253BEUE 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
MAX1253BEUE+ 功能描述:模数转换器 - ADC 12-Bit 10Ch 94ksps 3.3V Precision 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