- 您现在的位置：买卖IC网 > PDF目录383316 > MAX1253 (Maxim Integrated Products, Inc.) Stand-Alone. 10-Channel. 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor PDF资料下载
参数资料
| 型号： | MAX1253 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | Stand-Alone. 10-Channel. 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| 中文描述： | 独立的10通道、12位系统监视器，内置温度传感器和VDD监视器 |
| 文件页数： | 27/29页 |
| 文件大小： | 439K |
| 代理商： | MAX1253 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页当前第27页第28页第29页
M
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and V
DD
Monitor
______________________________________________________________________________________
27
Transfer Function
Figure 10 shows the nominal transfer function for single-
ended or differential unipolar configured inputs, Figure
11 illustrates the transfer function for differential bipolar
conversions, and Figure 12 shows temperature conver-
sions. Code transitions occur halfway between succes-
sive-integer LSB values. Output coding is binary, with
1 LSB = 610μV (MAX1253) or 1mV (MAX1254) for unipo-
lar and bipolar operation, and 1 LSB = +0.125
°
C
(MAX1253/MAX1254) for temperature measurements.
For unipolar operation, the 0 code level transition is at
[1/2(V
REF
/ 4096)].
The FFF hex level transition is at [4094.5 (V
REF
/ 4096)].
1 LSB = V
REF
/ 4096.
Layout, Grounding, and Bypassing
For best performance, use PC boards. Do not use wire-
wrap boards. Board layout should ensure that digital
and analog signal lines are separated from each other.
Do not run analog and digital (especially clock) signals
parallel to one another or run digital lines underneath
the MAX1253/MAX1254 package. High-frequency
noise in the V
DD
power supply can affect the
MAX1253/MAX1254 performance. Bypass the V
DD
sup-
ply with a 0.1μF capacitor from V
DD
to GND, close to
the V
DD
pin. Minimize capacitor lead lengths for best
supply-noise rejection. If the power supply is very
noisy, connect a 10
resistor in series with the supply
to improve power-supply filtering.
Definitions
Integral Nonlinearity
Integral nonlinearity is the deviation of the values on the
actual transfer function from a straight line. This straight
line can be either a best-straight-line fit or a line drawn
between the end points of the transfer function, once off-
set and gain errors have been corrected. The static lineari-
ty parameters for the MAX1253/MAX1254 are measured
using the end-point-fit method. INL is specified as the
maximum deviation in LSBs.
Differential Nonlinearity (DNL)
Differential nonlinearity is the difference between an
actual step width and the ideal value of 1 LSB. A DNL
error specification of less than 1 LSB guarantees no
missing codes and a monotonic transfer function.
Offset Error
The offset error is the difference between the ideal and
the actual analog input value at the first transition of the
ADC, usually from digital code 0 to code 1 for straight
binary output. For the MAX1253/MAX1254, the transi-
tion between code 0 and code 1 should occur at an
input voltage of 1/2 LSB, or 305μV for the MAX1253
and 500μV for the MAX1254.
OUTPUT CODE
011....111
011....110
TEMPERATURE
°
C
000....001
000....000
111....101
100....001
100....000
111....111
111....110
0
000....010
-256
°
C
+255.875
°
C
Figure 12. Temperature Transfer Function
OUTPUT CODE
011....111
011....110
INPUT VOLTAGE (LSB)
000....001
000....000
111....101
100....001
100....000
111....111
111....110
0
000....010
-FS
+FS - 1 LSB
FS =
ZS = 0
-FS =-V
REF
V
REF
2
2
1 LSB =V
REF
4096
Figure 11. Bipolar Transfer Function, Full Scale (±FS) = ±V
REF
/2
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| MAX1265AEEI | 265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface |
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+ | 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 |
发布紧急采购，3分钟左右您将得到回复。