MCP3905L-I/SS Microchip Technology, MCP3905L-I/SS Datasheet

IC,Power Metering,SSOP,24PIN,PLASTIC

MCP3905L-I/SS

Manufacturer Part Number
MCP3905L-I/SS
Description
IC,Power Metering,SSOP,24PIN,PLASTIC
Manufacturer
Microchip Technology
Datasheets

Specifications of MCP3905L-I/SS

Input Impedance
390 KOhm
Measurement Error
0.1%
Voltage - I/o High
2.4V
Voltage - I/o Low
0.85V
Current - Supply
2.7mA
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-SSOP (0.200", 5.30mm Width)
Meter Type
Single Phase
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Supply Voltage Range
4.5V To 5.5V
Digital Ic Case Style
SSOP
No. Of Pins
24
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MCP3905RD-PM1 - REFERENCE DESIGN FOR MCP3905MCP3905EV - BOARD DEMO FOR MCP3905
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Features
• Supplies active (real) power measurement for
• Supports the IEC 62053 International Energy
• Two multi-bit, Digital-to-Analog Converters
• 0.1% typical measurement error over 500:1
• 0.1% typical measurement error over 1000:1
• Programmable Gain Amplifier (PGA) for small-
• Ultra-low drift on-chip reference: 15 ppm/°C
• Direct drive for electromagnetic mechanical
• Low I
• Tamper output pin for negative power indication
• Industrial Temperature Range: -40°C to +85°C
• Supplies instantaneous active (real) power on
US Patents Pending
Functional Block Diagram
© 2009 Microchip Technology Inc.
single-phase, residential energy-metering
Metering Specification and legacy IEC 1036/
61036/687 Specifications
(DACs), second-order, 16-bit, Delta-Sigma
Analog-to-Digital Converters (ADCs)
dynamic range (MCP3905)
dynamic range (MCP3906)
signal inputs supports low-value shunt current
sensor
- 16:1 PGA - MCP3905
- 32:1 PGA - MCP3906
(typical)
counter and two-phase stepper motors
HF
REFIN/
Energy-Metering ICs with Active (Real) Power Pulse Output
OUT
CH0+
CH1+
CH0-
CH1-
OUT
DD
for meter calibration
of 4 mA (typical)
Reference
2.4V
G0 G1
+
+
PGA
Multi-level
Multi-level
ΔΣ ADC
ΔΣ ADC
16-bit
16-bit
HPF1
HPF1
HPF
Description
The MCP3905/06 devices are energy-metering ICs
designed to support the IEC 62053 International
Metering Standard Specification. They supply a
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 I
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
measurements. A Power-On Reset (POR) block
restricts
situations. These accurate energy-metering ICs with
high field reliability are available in the industry-
standard pinout.
Package Type
X
MCP3905/06
24-Pin SSOP
OSC1 OSC2
MCP3905A/MCP3906A
LPF1
Replacement Device:
meter
Obsolete Device
REFIN/OUT
POR
MCLR
performance
DV
CH0+
CH1+
AV
A
CH0-
CH1-
HPF
GND
F2
B
NC
DD
DD
F2
and I
F1
10
11
12
1
2
3
4
9
5
6
7
8
MAX
F0
conversion
HF
24
23
22
21
20
19
18
17
16
15
14
13
currents and/or small
E-to-F
during
OUT
F
F
HF
D
NEG
NC
OSC2
OSC1
G0
G1
F0
F1
F
OUT0
OUT1
DS21948E-page 1
GND
OUT1
OUT
MCLR
F
OUT0
low-voltage
NEG

Related parts for MCP3905L-I/SS

MCP3905L-I/SS Summary of contents

Page 1

... Reference CH1+ + 16-bit Multi-level – CH1- ΔΣ ADC © 2009 Microchip Technology Inc. Obsolete Device Replacement Device: MCP3905A/MCP3906A MCP3905/06 Description The MCP3905/06 devices are energy-metering ICs designed to support the IEC 62053 International Metering Standard Specification. They supply a frequency output proportional to the average active ...

Page 2

... MCP3905/06 NOTES: DS21948E-page 2 © 2009 Microchip Technology Inc. ...

Page 3

... MCLK period at 3.58 MHz is equivalent to less than <0.005 degrees Hz. 8: Gain error match is measured from CH0 any other gain setting. © 2009 Microchip Technology Inc. † Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is ...

Page 4

... Comment CH0+,CH0-,CH1+,CH1 GND G = PGA Gain on Channel 0 Proportional to 1/MCLK frequency Proportional to MCLK frequency, MCLK/256 pin only DD DV pin only DD = 2.5V, CH1 = 100 mVRMS @ , D = 0V. GND GND Units Conditions °C °C Note °C °C/W © 2009 Microchip Technology Inc. ...

Page 5

... MCLK periods, then Specified by characterization, not production tested OUT0 F OUT1 OUT t HP NEG FIGURE 1-1: Output Timings for Pulse Outputs and Negative Power Pin. © 2009 Microchip Technology Inc. = -40°C to +85°C. A Sym Min Typ Max t 275 — — — 90 — Refer to ...

Page 6

... MCP3905/06 NOTES: DS21948E-page 6 © 2009 Microchip Technology Inc. ...

Page 7

... Measurement Error, Gain = 16 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0.0000 0.0001 0.0010 0.0100 CH1 Vp-p Amplitude (V) FIGURE 2-3: Measurement Error, Gain = 32 © 2009 Microchip Technology Inc 5V 0V GND GND REF 0.6 0.5 +85°C 0.4 0.3 0.2 0.1 0 -40°C -0.1 -0 ...

Page 8

... FIGURE 2-10: Gain = 0.5. = Internal, HPF = 1 (AC mode), +85°C +25°C -40°C 0.0010 0.0100 0.1000 1.0000 CH1 Vp-p Amplitude (V) Measurement Error, +85°C +25°C -40°C 0.0010 0.0100 0.1000 1.0000 CH1 Vp-p Amplitude (V) Measurement Error, © 2009 Microchip Technology Inc. ...

Page 9

... Samples 1000 Mean = -1.64 mV Std. Dev = 17.4 µV 800 600 400 200 0 Channel 0 Offset (mV) FIGURE 2-13: Channel 0 Offset Error (DC Mode, HPF off © 2009 Microchip Technology Inc 5V 0V GND GND REF 4000 16384 Samples 3500 Mean = - 1.28 mV 3000 Std. dev = - 18.1 µV ...

Page 10

... FIGURE 2-19: with External V +85°C -40°C 0.1000 = Internal, HPF = 1 (AC mode), +85°C +25°C - 40°C 0.0001 0.0010 0.0100 0.1000 CH1 Vp-p Amplitude (V) Measurement Error (G = 16). REF © 2009 Microchip Technology Inc. ...

Page 11

... HPF controls the state of the high-pass filter in both input channels. A logic ‘1’ enables both filters, removing any DC offset coming from the system or the device. A logic ‘0’ disables both filters, allowing DC voltages to be measured. © 2009 Microchip Technology Inc. Table 3-1. Definition Digital Power Supply Pin ...

Page 12

... PCB. This plane should also reference , preferably all other digital circuitry in the system. GND and H used in the device transfer C FC are the frequency constants that FC and OUT shows a pulse. OUT ) GND must be GND , preferably GND © 2009 Microchip Technology Inc. ...

Page 13

... F0 and F1 pin logic c states. These pins include high-output drive capability for direct use of electromechanical counters and 2-phase stepper motors. Since this output supplies average active (real) power, any 2ω ripple on the output pulse period is minimal. © 2009 Microchip Technology Inc. ) OUT , F ) OUT1 MCP3905/06 ...

Page 14

... MCP3905/06 NOTES: DS21948E-page 14 © 2009 Microchip Technology Inc. ...

Page 15

... Offset and System and Line Frequency ADC Offset FIGURE 4-1: Simplified MCP3905/06 Block Diagram with Frequency Contents. © 2009 Microchip Technology Inc. The instantaneous power signal contains the real- power information the DC component of the instantaneous power. The averaging technique can be used with waveforms, as well as for all power factors ...

Page 16

... Section 5.0 voltage reference source impedance is typically 4 kΩ, which enables this voltage reference to be overdriven by an external voltage reference source. Figure 4- Frequency (kHz) SINC Filter Magnitude REF This internal V supplies REF “Applications Information”). The © 2009 Microchip Technology Inc. ...

Page 17

... PULSE OPERATION OUT MODE FIGURE 4-3: Power-on Reset Operation. © 2009 Microchip Technology Inc. 4.5 High-Pass Filters and Multiplier The active (real) power value is extracted from the DC instantaneous power. Therefore, any DC offset component present on Channel 0 and Channel 1 affects the DC component of the instantaneous power and will cause the real-power calculation to be erroneous ...

Page 18

... HF OUT0/1 OUT or OUT0/1 “F and HF Output OUT0/1 OUT outputs OUT0/1 . This is such that the integration period outputs is much larger. This larger demands that the 2ω OUT signal in OUT © 2009 Microchip Technology Inc. , ...

Page 19

... MCLK © 2009 Microchip Technology Inc. For a given DC input V, the DC and RMS values are equivalent. For a given AC input signal with peak-to- peak amplitude of V, the equivalent RMS value is V/ sqrt(2), assuming purely sinusoidal signals. Note that since the active (real) power is the product of two RMS ...

Page 20

... MCLK/2 219.51 16 MCLK/2 219.51 16 MCLK/2 219.51 is equal to 0.0015% of the OUT and Table 4-3 will determine the start-up C the FC value matching these (V = 2.4V) REF HF Frequency (Hz) with OUT full-scale AC Inputs 27.21 27.21 27.21 6070.12 47.42 47.42 47.42 47.42 © 2009 Microchip Technology Inc. ...

Page 21

... Compensation for parasitic shunt inductance • EMC design • Power supply design • No-load threshold • Start-up current • Accuracy testing results from MCP3905-based meter • EMC testing results from MCP3905-based meter © 2009 Microchip Technology Inc. MCP3905/06 note DS21948E-page 21 ...

Page 22

... MCP3905/06 NOTES: DS21948E-page 22 © 2009 Microchip Technology Inc. ...

Page 23

... Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. © 2009 Microchip Technology Inc. MCP3905/06 Examples: MCP3905L I/SS 0906256 ...

Page 24

... MCP3905/06 /HDG 3ODVWLF 6KULQN 6PDOO 2XWOLQH 66 ± 1RWH 1RWHV DS21948E-page 24 PP %RG\ >6623@ I © 2009 Microchip Technology Inc. φ ...

Page 25

... The following is the list of modifications: 1. Added references to MCP3905/06 throughout document. Revision B (August 2005) The following is the list of modifications: 1. Replace Figures 2-1 thru 2-6 in Section 2.0 “Typical Performance Curves” Revision A (July 2005) • Original Release of this Document. © 2009 Microchip Technology Inc. MCP3905/06 DS21948E-page 25 ...

Page 26

... MCP3905/06 NOTES: DS21948E-page 26 © 2009 Microchip Technology Inc. ...

Page 27

... Range: Package Plastic Shrink Small Outline (209 mil Body), 24-lead © 2009 Microchip Technology Inc. MCP3905/06 . Examples: a) MCP3905L-I/SS: Industrial Temperature, 24LD SSOP. b) MCP3905LT-I/SS:Tape and Reel, Industrial Temperature, 24LD SSOP. a) MCP3906-I/SS: Industrial Temperature, 24LD SSOP. b) MCP3906T-I/SS: Tape and Reel, Industrial Temperature, 24LD SSOP ...

Page 28

... MCP3905/06 NOTES: DS21948E-page 28 © 2009 Microchip Technology Inc. ...

Page 29

... PICDEM, PICDEM.net, PICtail, PIC Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 30

... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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