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MCP3906-I/SS 参数 Datasheet PDF下载

MCP3906-I/SS图片预览
型号: MCP3906-I/SS
PDF下载: 下载PDF文件 查看货源
内容描述: 与有功电能脉冲输出电能计量IC [Energy-Metering ICs with Active (Real) Power Pulse Output]
分类和应用: 模拟IC信号电路脉冲光电二极管
文件页数/大小: 26 页 / 363 K
品牌: MICROCHIP [ MICROCHIP ]
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MCP3905/06  
Energy-Metering ICs with Active (Real) Power Pulse Output  
Features  
Description  
The MCP3905/06 devices are energy-metering ICs  
designed to support the IEC 62053 International  
• Supplies active (real) power measurement for  
single-phase, residential energy-metering  
Metering Standard Specification. They supply  
a
• Supports the IEC 62053 International Energy  
Metering Specification and legacy IEC  
1036/61036/687 Specifications  
frequency output proportional to the average active  
(real) power, as well as a higher-frequency output  
proportional to the instantaneous power for meter  
calibration. They include two 16-bit, delta-sigma ADCs  
for a wide range of IB and IMAX currents and/or small  
shunt (< 200 µOhms) meter designs. It includes an  
ultra-low drift voltage reference with < 15 ppm/°C  
through a specially designed band gap temperature  
curve for the minimum gradient across the industrial  
temperature range. A fixed-function DSP block is on-  
chip for active (real) power calculation. Strong output  
drive for mechanical counters are on-chip to reduce  
field failures and mechanical counter sticking. A no-  
load threshold block prevents any current creep mea-  
surements. A Power-On Reset (POR) block restricts  
meter performance during low-voltage situations.  
These accurate energy-metering ICs with high field  
reliability are available in the industry-standard pinout.  
• Two multi-bit, Digital-to-Analog Converters  
(DACs), second-order, 16-bit, Delta-Sigma  
Analog-to-Digital Converters (ADCs)  
• 0.1% typical measurement error over 500:1  
dynamic range (MCP3905)  
• 0.1% typical measurement error over 1000:1  
dynamic range (MCP3906)  
• Programmable Gain Amplifier (PGA) for small-  
signal inputs supports low-value shunt current  
sensor  
- 16:1 PGA - MCP3905  
- 32:1 PGA - MCP3906  
• Ultra-low drift on-chip reference: 15 ppm/°C (typ.)  
• Direct drive for electromagnetic mechanical  
counter and two-phase stepper motors  
Package Type  
• Low IDD of 4 mA (typ.)  
DVDD  
HPF  
AVDD  
NC  
1
24 FOUT0  
Tamper output pin for negative power indication  
• Industrial Temperature Range: -40°C to +85°C  
24-Pin SSOP  
FOUT1  
HFOUT  
2
3
4
5
23  
22  
• Supplies instantaneous active (real) power on  
HFOUT for meter calibration  
21 DGND  
20 NEG  
CH0+  
CH0-  
CH1-  
CH1+  
MCLR  
NC  
6
7
8
19  
18  
OSC2  
17 OSC1  
16 G0  
US Patents Pending  
9
REFIN/OUT 10  
15  
G1  
AGND  
F2  
11  
12  
14 F0  
13 F1  
Functional Block Diagram  
G0 G1  
HPF  
OSC1 OSC2  
HFOUT  
FOUT0  
FOUT1  
CH0+  
CH0-  
+
16-bit  
Multi-level  
ΔΣ ADC  
PGA  
F2 F1 F0  
NEG  
HPF1  
REFIN/  
OUT  
E-to-F  
conversion  
LPF1  
X
2.4V  
Reference  
CH1+  
CH1-  
+
16-bit  
Multi-level  
ΔΣ ADC  
POR  
HPF1  
MCLR  
© 2007 Microchip Technology Inc.  
DS21948D-page 1  
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