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参数资料
| 型号： | 78M6613-IM/F/PSU |
| 厂商： | Maxim Integrated |
| 文件页数： | 6/33页 |
| 文件大小： | 0K |
| 描述： | IC PWR MEASUREMENT AC 32SQFN |
| 标准包装： | 490 |
| 系列： | Teridian™ |
| 输入阻抗： | 40 千欧 ~ 90 千欧 |
| 测量误差： | 0.5% |
| 电压 - 高输入/输出： | 2V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 9.1mA |
| 电源电压： | 3 V ~ 3.6 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
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78M6613 Data Sheet
DS_6613_018
1.2
Analog Front End (AFE)
The AFE of the 78M6613 is comprised of an input multiplexer, a delta-sigma A/D converter and a
voltage reference.
1.2.1
Input Multiplexer
The input multiplexer supports up to four input signals that are applied to pins A0, A1, A2 and A3 of the
device. Additionally, using the alternate mux selection, it has the ability to select the on-chip
temperature sensor. The multiplexer can be operated in two modes:
?
?
During a normal multiplexer cycle, the signals from the A0, A2, A1, and A3 pins are selected.
During the alternate multiplexer cycle, the temperature signal (TEMP) is selected, along with the
details the regular and alternative MUX sequences. Missing samples due to an ALT multiplexer
sequence are filled in by the CE.
Table 1: Inputs Selected in Regular and Alternate Multiplexer Cycles
Regular MUX Sequence
Mux State
ALT MUX Sequence
Mux State
0
A0
1
A1
2
A2
3
A3
0
TEMP
1
A1
2
V3P3D
3
A3
In a typical application, A1 and A3 are connected to current sensors that sense the current on each
branch of the line voltage. A0 and A2 are typically connected to voltage sensors through resistor
dividers. The multiplexer control circuit is clocked by CK32, the 32.768 kHz clock from the PLL block,
and launches with each new pass of the CE program.
1.2.2
A/D Converter (ADC)
A single delta-sigma A/D converter digitizes the voltage and current inputs to the 78M6613. The
resolution of the ADC is 22 bits. Conversion time is two cycles of the CK32 clock.
Initiation of each ADC conversion is controlled by the multiplexer control circuit as described previously.
At the end of each ADC conversion, the FIR filter output data is stored into the CE DRAM location.
1.2.3
FIR Filter
The finite impulse response filter is an integral part of the ADC and it is optimized for use with the
multiplexer. The purpose of the FIR filter is to decimate the ADC output to the desired resolution. At the
end of each ADC conversion, the output data is stored into the fixed CE DRAM location determined by
the multiplexer selection.
1.2.4
Voltage References
The device includes an on-chip precision bandgap voltage reference that incorporates auto-zero
techniques. The reference is trimmed to minimize errors caused by component mismatch and drift. The
result is a voltage output with a predictable temperature coefficient.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 78M6613-IMR | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase AC Power Measurement IC |
| 78M6613-IMR/F | 功能描述:计量片上系统 - SoC Sgl Phase AC Pwr Measurement IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 78M6613-IMR/F/P | 制造商:Maxim Integrated Products 功能描述:PROGRAMMED - LEAD FREE/TAPE & REEL - Tape and Reel |
| 78M6613-IMR/F/P48 | 制造商:Maxim Integrated Products 功能描述:SINGLE-PHASE AC POWER-MEASUREMENT IC, 4800 BAUD - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC SENSOR ISOLATED 32QFN 制造商:Maxim Integrated Products 功能描述:8-Bit Programmable Timing Element |
| 78M6613-IMR/F/PC1 | 功能描述:IC SENSOR ISOLATED 32QFN 制造商:maxim integrated 系列:Teridian?? 包装:带卷（TR） 零件状态:停产 输入阻抗:40 千欧 ~ 90 千欧 测量误差:0.5% 电压 - I/O 高:2V 电压 - I/O 低:0.8V 电流 - 电源:9.1mA 电压 - 电源:3 V ~ 3.6 V 表计类型:单相 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商器件封装:32-QFN（5x5） 标准包装:2,500 |
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