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参数资料
| 型号： | MAX1299CEAE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/20页 |
| 文件大小： | 299K |
| 描述： | IC TEMP SENS W/ADC 16-SSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 76 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | -40°C ~ 85°C，外部传感器 |
| 精确度： | ±4°C（最小值） |
| 拓扑： | ADC，多路复用器，寄存器库 |
| 输出类型： | MICROWIRE?，QSPI?，SPI? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
12-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
12 ______________________________________________________________________________________
Converter Operation
Figure 2 shows a simplified model of the converter
input structure. Once initiated, a voltage conversion
requires 64 f
CLK
periods, where f
CLK
is the internal
master clock. Each conversion is preceded by 13 f
CLK
periods of warm-up time, performed in twelve 4 f
CLK
period cycles, and followed by 3 f
CLK
periods to load
the output register. SSTRB falls at the beginning of a
conversion and rises at the end of a conversion.
Inputs IN+ and IN- charge capacitors C
HOLDP
and
C
HOLDN
, respectively, during the acquisition interval
that occurs during the first f
CLK
period of the first con-
version cycle. In the second f
CLK
period, the T/H
switches open so that charge is retained on C
HOLDP
and C
HOLDN
as a sample of the differential voltage
between IN+ and IN-. This charge is transferred to the
ADC during the third and fourth f
CLK
periods.
The reference sampling process begins in the second
conversion cycle and continues until the conversion is
complete. Sampling occurs during the second and
fourth f
CLK
periods to yield an effective doubling of the
reference voltage. The reference sampling requirement
is signal dependent and may or may not occur in every
subsequent conversion cycle.
Temperature conversion is essentially nothing more than
subtracting the results of two sequential voltage conver-
sions. The only difference is that output registers are not
loaded at the end of the first conversion. Thus, tempera-
ture conversions require 2 x 64 - 3 = 125 f
CLK
periods.
Figures 3a and 3b show timing diagrams for voltage
and temperature conversions, respectively.
Track/Hold
The T/H stage for the MAX1298/MAX1299 is a simple
switched-capacitor sampling operation. The time
required for the T/H stage to acquire an input signal is
a function of how fast its input capacitance is charged.
If the signal source impedance is high, the acquisition
time lengthens and more time must be allowed
between conversions. The acquisition time (t
ACQ
) is the
TIMING/CONTROL
LOGIC
FULLY
DIFFERENTIAL
A/D
OUTPUT
GAIN
OF 2
IN+
IN-
REF
TRACK AND HOLD
C
HOLDP
4pF
C
HOLDN
4pF
C
REF
4pF
R
R
30k&
R
IN
40k&
R
IN
40k&
T/H
T/H
Figure 2. Converter Input Structure
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相关代理商/技术参数 |
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| MAX1299CEAE+ | 功能描述:板上安装温度传感器 12-Bit Serial-Output w/5Ch ADC RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX1299CEAE+T | 功能描述:板上安装温度传感器 12-Bit Serial-Output w/5Ch ADC RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX1299CEAE-T | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX12D | 制造商:Lanzar 功能描述:Dual 4 Ohm 1000W Peak 12 Paper Cone Dual Vc Woofer 制造商:LANZAR 功能描述:12 PAPER CONE DUAL VC WOOFER DUAL 4 OHM 1000W PEAK |
| MAX12G | 制造商:Aavid Thermalloy 功能描述:Thrml Mgmt Access Heat Sink Clip |
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