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参数资料
| 型号： | MAX132CWG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC ADC 18BIT SERIAL 24-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 位数： | 18 |
| 采样率（每秒）： | 100 |
| 数据接口： | MICROWIRE?，串行，SPI? |
| 转换器数目： | 1 |
| 电压电源： | 双 ± |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 1 个伪差分，双极 |
MAX132
±18-Bit ADC with Serial Interface
______________________________________________________________________________________
15
MAX132
RW2
RW1
V-
V+
DGND
IN
GND
AGND
RW1, RW2 WIRE RESISTANCE
4.096V
1
13
CS
VS
250
0.1%
2k
600k
0.1
F10F
2
DIN
3
DOUT
4
SCLK
11
EOC
7
PG0
8
PG1
VR
9
PG2
10
PG3
14
IN HI
15
23
24
-5V
+5V
22
21
19
20
18
17
5
6
12
16
IN LO
BUF OUT
INT OUT
OUT
INT IN
4.7nF
32,768Hz
CREF+
CHIP SELECT
DATA IN
DATA OUT
SERIAL-
DATA
INTERFACE
CLOCK
RTD
PT100
CREF-
REF+ IN
REF- IN
OSC2
OSC1
IC2
MAX872
IC1
0.1
F
0.1
F
10
F
+5V
Figure 11. Ratiometric Configuration Using the Differential Reference Inputs
SPI is a trademark of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
of the overall accuracy of the current source. The cur-
rent source delivers 2mA, resulting in about 500mV
across the 250
resistor—suitable to fit the MAX132’s
±512mV full-scale range. Note that the accuracy of the
reference resistor (0.1%) sets the circuit’s accuracy.
The power consumption of the RTD sensor is small
(0.5mW), minimizing errors caused by self-heating.
Interfacing to a P Parallel Port
Figure 12 shows a high-level software subroutine for
reading output/status data and writing command data
to the MAX132. It provides an algorithm for serial com-
munication when the P port does not have a prede-
fined serial interface protocol (i.e., SPI or Microwire).
The routine sends command data (TxByte) to the
MAX132 while concurrently collecting the MAX132’s
output register data (selected by the previous write
cycle). Note that a write is required before each read to
change the next output register to be read, and that
the subroutine must be repeated three times to read
the output status register, Output Register 0, and
Output Register 1.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX132ENG | 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 |
| MAX132ENG+ | 功能描述:模数转换器 - ADC 18-Bit .1ksps .545V 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 |
| MAX132EVKIT-DIP | 功能描述:数据转换 IC 开发工具 MAX132 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| MAX132EWG | 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 |
| MAX132EWG+ | 功能描述:模数转换器 - ADC 18-Bit .1ksps .545V 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 |
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