MCP3909-I/SS Microchip Technology, MCP3909-I/SS Datasheet
MCP3909-I/SS
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MCP3909-I/SS Summary of contents
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... Sub-system OSC1 OSC2 © 2006 Microchip Technology Inc. MCP3909 Description The MCP3909 device is an energy-metering IC designed to support the IEC 62053 international metering standard specification. It supplies a frequency output proportional to the average active real power, with simultaneous serial access to ADC channels and multiplier output data. This output waveform data is available kHz with 16-bit ADC output and 20-bit multiplier output words ...
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... MCP3909 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † V ...................................................................................7.0V DD Digital inputs and outputs w.r.t. A ........ -0. GND Analog input w.r.t. A ..................................... ....-6V to +6V GND V input w.r.t. A ............................... -0. REF GND Storage temperature .....................................-65°C to +150°C Ambient temp. with power applied ................-65°C to +125°C Soldering temperature of leads (10 seconds) ............. +300°C ESD on the analog inputs (HBM,MM) ...
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... F pulse outputs. Valid from Hz. OUT0 OUT1 . Gain = 1, CH0 = 470 mVDC, CH1 = 660 mVDC, difference between REF REF = 100 Hz. DC PSRR: 5V ±500 MCP3909 = DV = 4.5V to 5.5V -40°C to +85°C. A Comment Referred to Input, applies to both channels (Note 5) CH0+,CH0-,CH1+,CH1 GND G = PGA Gain on Channel 0 ...
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... Electrical Specifications: Unless otherwise indicated, V Parameters Sym Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Note: The MCP3909 operates over this extended temperature range, but with reduced performance. In any case, the Junction Temperature (T DS22025A-page 4 = 4.5V to 5.5V Min Typ Max ...
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... CLK — — 8/MCLK 1/MCLK — — — — — — 10 — — SU — — — — 150 DIS — — MCP3909 = DV = 4.5V to 5.5V Units Comment ms 984376 MCLK periods (Note 1) ms 322160 MCLK periods (Note 5.0V OL ...
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... MCP3909 TIMING CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all parameters apply 0V, MCLK = 3.58 MHz; T GND GND Parameter Sym SDO Rise Time SDO Fall Time Note 1: If output pulse period (t ) falls below 984376*2 MCLK periods, then output pulse period (t ) falls below 322160*2 MCLK periods, then t ...
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... SPI Data Output Pin FIGURE 1-3: SPI Output Pin Loading Circuit During SPI Testing. © 2006 Microchip Technology Inc – ------------------------------ - 180 -------------- - I OH MCP3909 ) OL DS22025A-page 7 ...
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... MCP3909 2.0 TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e ...
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... Std. Dev = - 1.22 µV 400 300 200 100 0 -1.30 -1.50 FIGURE 2-12: (DC Mode, HPF Off 16 1). MCP3909 = Internal, HPF = 1 (AC mode), 16384 Samples Mean = -1.20 mV Std. Dev. = 25.1 µV Bin (mV) Channel 0 Offset Error Bin (mV) Channel 0 Offset Error -1.25 -1.23 -1.20 -1 ...
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... MCP3909 Note: Unless otherwise specified MCLK = 3.58 MHz, CH1 input = 660 mV 0.3 0.25 0.2 V =5.0V DD 0.15 0.1 V =4.5V DD 0.05 V =4.75V DD V =5.25V 0 DD -0.05 -0.1 -0.15 0.0001 0.0010 0.0100 0.1000 CH0 Vp-p Amplitude (V) FIGURE 2-13: Active Power Measurement Error over V , Internal 16 ...
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... Error with External V 100 -40° 0.1000 0.0001 FIGURE 2-24: Distortion Ratio vs. Input Signal Amplitude (G = 1). MCP3909 = Internal, HPF = 1 (AC mode), +85°C +25°C 0.0001 0.0010 0.0100 0.1000 CH1 Vp-p Amplitude (V) Active Power Measurement ( 1). REF -40°C +85°C 0.0001 0.0010 0.0100 0.1000 CH1 Vp-p Amplitude (V) Active Power Measurement (G =16 ...
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... MCP3909 Note: Unless otherwise specified MCLK = 3.58 MHz, CH1 input = 660 mV 100 90 SINAD (dBFS SINAD (dB 0.000100 0.001000 0.010000 0.100000 1.000000 CH0 Vp-p Amplitude (V) FIGURE 2-25: Signal-to-Noise and Distortion Ratio vs. Input Signal Amplitude (G = 2). 100 90 80 SINAD (dBFS SINAD (dB 0.00001 0.0001 0.001 ...
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... F OUT0 3.1 Digital V ( the power supply pin for the digital circuitry DD within the MCP3909. This pin requires appropriate bypass capacitors and should be maintained to 5V ±10% for specified operation. Refer to Section 6.0 Information”. 3.2 High-Pass Filter Input Logic Pin (HPF) HPF controls the state of the high-pass filter in both input channels. A logic ‘ ...
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... MCP3909 3.5 Voltage Channel (CH1-,CH1+) CH1- and CH1+ are the fully differential analog voltage input channels for the voltage measurement. The linear and specified region of these channels have a maximum differential voltage of ±660 mV and a maximum absolute voltage of ±1V, with respect ±6V can be applied to these pins without GND the risk of permanent damage ...
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... GND pins include high-output drive capability for direct use of electromechanical counters and 2-phase stepper motors. Since this output supplies average real power, any 2ω ripple on the output pulse period is minimal. ) OUT C MCP3909 , F ) OUT0 OUT1 are the frequency outputs of the OUT1 DS22025A-page 15 ...
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... MCP3909 4.0 DEVICE OVERVIEW The MCP3909 is an energy metering IC that serves two distinct functions that can operate simultaneously: - Active Power Pulse Output - Waveform Output via SPI Interface For the active power output, the device supplies a frequency output proportional to active (real) power, and higher frequency output proportional to the instantaneous power for meter calibration ...
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... Delta-Sigma A/D Converters The ADCs used in the MCP3909 for both current and voltage channel measurements are delta-sigma ADCs. They comprise a second-order, delta-sigma modulator using a multi-bit DAC and a third-order SINC filter. The delta-sigma architecture is very appropriate for the applications targeted by the MCP3909 because ...
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... Section 6.0 “Applications Information”). The threshold voltage is typically set at 4V, with a tolerance of about ±5%. If the supply voltage falls below this threshold, the MCP3909 will be held in a Reset condition (equivalent to applying logic ‘0’ on the MCLR pin). The typical hysteresis value is approxi- mately 200 mV in order to prevent glitches on the power supply ...
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... F Frequency (Hz) OUT F (Hz) C with Full-Scale (MCLK = 3.58 MHz) DC Inputs 1.71 0.74 3.41 1.48 6.83 2.96 13.66 5.93 MCP3909 demands that the 2ω OUT signal in OUT and HF OUT0/1 OUT and HF (i.e., they have OUT0/1 OUT allowed OUT0/1 F FREQUENCY OUT OUTPUT EQUATION × ...
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... MINIMAL OUTPUT FREQUENCY FOR NO-LOAD THRESHOLD The MCP3909 also includes, on each output frequency, a no-load threshold circuit that will eliminate any creep effects in the meter. The outputs will not OUT show any pulse if the output frequency falls below the no-load threshold ...
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... SERIAL INTERFACE DESCRIPTION 5.1 Dual Functionality Pin And Serial Interface Overview The MCP3909 device contains three serial modes that are accessible by changing the pin functionality of the NEG, F2, F1, and F0 pins to SDO, SCK, SDI and CS, respectively. These modes are entered by giving the MCP3909 device a serial command on these pins during a time window after device reset or POR ...
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... MCP3909 MCLR t WINSET F2 / SCK SDI FIGURE 5-3: Dual Functionality Pin Serial Mode Entry Protocol. DS22025A-page 22 t WINDOW © 2006 Microchip Technology Inc. ...
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... Serial Mode Entry Codes The MCP3909 devices contains three different serial modes with data presented in 2's complement coding. • Multiplier Output • Dual Channel Output • Filter Input After entering any of these modes the active power calculation block is still functional and presents output ...
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... MCP3909 5.3 Multiplier Output Mode Multiplier mode allows the user to retrieve the output of the multiplier on the MCP3909 device. Data is presented bit (19 bit + sign) protocol, MSB first. A data ready flag (DR) is output for every MCLK/256 Multiplier Code = TABLE 5-2: MULTIPLIER OUTPUT MODE CODING ...
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... This HPF pin must be high to access the post HPF data in the channel output mode D15 D14 D1 D31 D30 D17 D16 Channel 0 Channel 1 Hi-z MCP3909 0.66 ⎞ × × ---------- - PGA ⎠ 0.47 0.47 ⎞ × 8.06 ---------- - ⎠ 0.66 Hi-z D0 DS22025A-page 25 ...
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... Filter Input Mode The filter input mode allows the user to feed the MCP3909 device an input to the LPF1. Data is received MSB first. The MCP3909 will treat this data were the output of the multiplier and will LPF and D-F the result as normal, giving the resulting ...
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... The following table represents the standard SPI mode terminology, the respective PIC bit settings, and a description of compatibility for the MCP3909 device. The MCP3909 works in SPI mode 0,1 mode, that is the data is clocked out of the part on the rising edge and clocked in on the falling edge of SCK. ...
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... MCP3909 MCU latches data from Device on falling edges of SCK F2 / SCK 1 Data is clocked out on rising edges of SCK F1 / SDI NEG / SDO D19 MCU Transmit Buffer X MCU Receive Buffer D19 D18 D17 D16 Data stored into MCU receive register after transmission of first 8 bits SCK ...
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... Don’t Care CHANNEL 1 D10 D14 D13 D12 D11 D11 D10 D9 D8 CH1 Data stored into MCU receive regis- CH1 Data stored into MCU receive register ter after transmission of third 8 bits after transmission of fourth 8 bits MCP3909 ...
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... Active Power using MCP3909 Waveform data Figure 6-1 represents power calculations from wave- form data based on a PIC MCU and MCP3909 device. The PIC MCU accomplishes the following energy meter calculation outputs per phase, per line cycle: - RMS Current - RMS Voltage ...
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... IRQ 16 bits SDO ADCs FIGURE 6-2: Using the PIC device to control the MCP3909 MCLK to achieve 2 cycle, 3-phase sampling shown with 6 ADCs © 2006 Microchip Technology Inc. A simpler lower cost option would be to choose a frequency that would give an integer number of line cycles for exactly 50 Hz (or 60 Hz). This is possible using a 39 ...
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... Power Supply Circuitry FIGURE 6-3: Simplified MCU Based Energy Meter. 6.3 Meter Calibration To achieve meter calibration the MCP3909 waveform samples are adjusted during the power calculations on the PIC MCU. In Figure 6-3, this interface is shown via RS-232 on the PIC microcontroller. This process is streamlined using calibration software available from Microchip’ ...
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... 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. © 2006 Microchip Technology Inc. MCP3909 Examples: MCP3909 I/SS 0648256 ) e 3 ...
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... MCP3909 24-Lead Plastic Shrink Small Outline (SS) (SSOP) Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging Units Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff Overall Width Molded Package Width Overall Length ...
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... APPENDIX A: REVISION HISTORY Revision A (December 2006) • Original Release of this Document. © 2006 Microchip Technology Inc. MCP3909 DS22025A-page 35 ...
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... MCP3909 NOTES: DS22025A-page 36 © 2006 Microchip Technology Inc. ...
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... Reel) Temperature Range -40°C to +85°C Package Plastic Shrink Small Outline (209 mil Body), 24-lead © 2006 Microchip Technology Inc. MCP3909 . Examples: a) MCP3909-I/SS: Energy Metering IC Industrial Temperature, 24LD SSOP. b) MCP3909T-I/SS: Tape and Reel, Energy Metering IC Industrial Temperature, 24LD SSOP. DS22025A-page 37 ...
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... MCP3909 NOTES: DS22025A-page 38 © 2006 Microchip Technology Inc. ...
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... Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, 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. ...
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... Fax: 886-3-572-6459 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 © 2006 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 ...