CDB5464U Cirrus Logic Inc, CDB5464U Datasheet
CDB5464U
Specifications of CDB5464U
CDB-5464U
Related parts for CDB5464U
CDB5464U Summary of contents
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Three-channel, Single-phase Power/Energy IC Features & Description • Energy Linearity: ±0.1% of Reading over 1000:1 Dynamic Range • On-chip Functions: - Voltage and Current Measurement - Active, Reactive, and Apparent Power/Energy - RMS Voltage and Current Calculations - Current Fault ...
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Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Voltage Reference Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.1.5 ...
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Temperature Sensor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 9.1.4.1 Temperature Offset Calibration . . . ...
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OVERVIEW The CS5464 is a CMOS power measurement integrated circuit utilizing four ∆Σ analog-to-digital convert- ers to measure line voltage, temperature, and current from up to two sources. It calculates active, reactive, and apparent power as well as RMS ...
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PIN DESCRIPTION Crystal Out CPU Clock Output Positive Digital Supply Digital Ground Serial Clock Serial Data Ouput Chip Select Mode Select Differential Voltage Input Differential Voltage Input Voltage Reference Output Voltage Reference Input Factory Test Factory Test Clock Generator ...
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CHARACTERISTICS & SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS Parameter Positive Digital Power Supply Positive Analog Power Supply Voltage Reference Specified Temperature Range ANALOG CHARACTERISTICS • Min / Max characteristics and specifications are guaranteed over all • Typical characteristics and specifications are ...
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ANALOG CHARACTERISTICS Parameter Analog Inputs (Voltage Inputs) Differential Input Range Total Harmonic Distortion Crosstalk from Current Inputs at Full Scale Input Capacitance Effective Input Impedance Noise (Referred to Input) Offset Drift (Without the High-pass Filter) Gain Error Temperature Temperature Accuracy ...
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VOLTAGE REFERENCE Parameter Reference Output Output Voltage Temperature Coefficient Load Regulation Reference Input Input Voltage Range Input Capacitance Input CVF Current Notes: 8. The voltage at VREFOUT is measured across the temperature range. From these measurements the following formula is ...
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DIGITAL CHARACTERISTICS • Min / Max characteristics and specifications are guaranteed over all • Typical characteristics and specifications are measured at nominal supply voltages and °C. • VA ±5%; AGND = DGND = ...
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SWITCHING CHARACTERISTICS • Min / Max characteristics and specifications are guaranteed over all • Typical characteristics and specifications are measured at nominal supply voltages and °C. • VA ±5% VD+ = 3.3 V ±5% ...
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SWITCHING CHARACTERISTICS Parameter E1, E2, and E3 Timing Period Pulse Width Rising Edge to Falling Edge E2 Setup to E1 and/or E3 Falling Edge E1 Falling Edge to E3 Falling Edge Notes: 19. Pulse output timing is specified at DCLK ...
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FGA Figure 3. Signal Flow for V1, I1, P1, Q1 Measurements 4. SIGNAL PATH DESCRIPTION The data flow for voltage and current measurement and the other calculations are shown in Figures 3, 4, and 5. The data flow consists of ...
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DC Offset and Gain Correction The system and chip inherently have gain and offset er- rors which can be removed using the gain and offset registers. (See Section 9. System Calibration 39). Each measurement channel has its own registers. ...
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P1 (P2 ) OFF OFF 4.8 Power and Energy Results The instantaneous voltage and current samples are multiplied to obtain the instantaneous power ( (see Figure 3 and 4). The product is then averaged over N ...
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PIN DESCRIPTIONS 5.1 Analog Pins The CS5464 has three differential inputs: VIN ±, IIN1 ± , and IIN2 ± are the voltage, current1, and current2 inputs, respectively. A single-ended power fail monitor input, voltage reference input, and voltage reference ...
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Serial Interface The CS5464 provides 5 pins, SCLK, SDI, SDO, CS, and MODE for communication between a host microcontrol- 2 ler or serial E PROM and the CS5464. MODE is an input that, when high, indicates to the 2 ...
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SETTING UP THE CS5464 6.1 Clock Divider The internal clock to the CS5464 needs to operate around 4 MHz. However, by using the internal clock di- vider, a higher crystal frequency can be used. This is im- portant when ...
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E3 as controlled by E3MODE[1:0] in the Modes register when E1MODE is not enabled. E3MODE1 E3MODE0 0 0 Reactive Energy 0 1 Power Fail Monitor Apparent Energy Table 5. E3 Pin Configuration ...
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For each enabled input channel, the measured value is rectified and compared to the associated level register . Over the duration window, the number of samples above and below the level are counted. If the number of samples below the ...
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USING THE CS5464 7.1 Initialization The CS5464 uses a power-on-reset circuit (POR) to provide an internal reset until the analog voltage reach- es 4.0 V. The RESET input pin can also be used by the application circuit to reset ...
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Command Interface Commands and data are transferred most-significant bit (MSB) first. Figure 1 on page 12, defines the serial port timing. Commands are clocked in on SDI using SCLK. They are a single byte (8 bits) long and fall ...
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Commands All commands are 1 byte (8 bits) long. Many command values are unused and should NOT be written by the application program. All commands except register reads, register writes, or synchronizing commands will abort any conversion, calibration, or ...
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Calibration CAL5 CAL4 CAL3 CAL2 CAL1 CAL0 The CS5464 can perform gain and offset calibrations using either signals. Proper input levels must be applied to the current inputs and ...
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Register Read and Write W/R RA4 RA3 RA2 Read and Write commands provide access to on-chip registers. After a Read command, the addressed data can be clocked out the SDO pin by SCLK. ...
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Page1 Registers Address RA[4:0] Name 0 00000 I1 1 00001 I1 2 00010 V1 3 00011 V1 4 00100 P1 5 00101 I1 6 00110 V1 7 00111 I2 8 01000 I2 9 01001 V2 10 01010 V2 11 01011 ...
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REGISTER DESCRIPTIONS 1. “Default” = bit states after power-on or reset 2. DO NOT write a “1” to any unpublished register bit NOT write to any unpublished register address. 8.1 Page Register 8.1.1 Page Address: 31, Write-only, ...
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Instantaneous Current (I1, I2), Voltage (V1, V2), and Power (P1, P2) Address MSB 0 -1 ...
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Peak Current ( PEAK Address PEAK MSB -( Peak current PEAK PEAK samples with the greatest magnitude ...
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Internal Status (Status) and Interrupt Mask (Mask) Address Status ); 26 ( Mask ) 23 22 DRDY I2OR V2OR 15 14 E2OR I1ROR V1ROR 7 6 TUP TOD I2OD Default = 1 ( Status ), 0 ( ...
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Control (Ctrl) Address: 28 – PC7 PC6 I1gain Default = 0 PC[7:0] Phase compensation for channel 2. Sets a delay in voltage relative to current. Phase is signed and ...
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Page 1 Registers 8.3.1 DC Offset for Current (I1 Address OFF OFF MSB -( Default = 0 DC ...
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Mode Control (Modes) – Ichan VFIX 15 14 IvsE E1MODE1 E1MODE0 7 6 IHPF2 VHPF1 IHPF1 Default = 0 Ichan Chooses an energy channel to drive the Pulse registers driven by energy channel 1. ...
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E3MODE[1:0] E3 Output Mode (with E1MODE enabled Power Fail Monitor 01 = Energy Sign 10 = not used 11 = not used POS Positive Energy Only. Suppresses negative values in P1 calculated, zero will be stored instead. AFC ...
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Cycle Count (N) Address: 19 – MSB Default = 4000 Determines the number of output word rate (OWR) samples to use in calculating low-rate results. Cycle Count ( N ) ...
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Temperature Gain (T GAIN MSB Default = 0x2F02C3 Refer to 6.13 Temperature Measurement 8.3.14 Temperature Offset (T OFF MSB -( ...
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System Gain (G) Address: 28 – MSB -( Default = 1.25 System Gain ( applied to all channels. By default 1.25, but can be ...
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SYSTEM CALIBRATION 9.1 Calibration The CS5464 provides DC offset and gain calibration that can be applied to the voltage and current measure- ments, and AC offset calibration which can be applied to the voltage and current RMS calculations. Since ...
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Gain Calibration During gain calibration, a full-scale reference signal must be applied to the meter or optionally, scaled to the VIN ± , IIN1 ± (IIN2 ±) pins of the CS5464 reference must be used for DC ...
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PROM OPERATION The CS5464 can accept commands from a serial 2 E PROM connected to the serial interface instead of a host microcontroller. A high level (logic 1) on the MODE 2 input indicates that an E PROM ...
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BASIC APPLICATION CIRCUITS Figure 14 shows the CS5464 configured to measure power in a single-phase, 2-wire system while operating in a single-supply configuration. In this diagram, a shunt resistor is used to sense the line current and a voltage ...
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PACKAGE DIMENSIONS 28L SSOP PACKAGE DRAWING TOP VIEW INCHES DIM MIN 0.002 A2 0.064 b 0.009 D 0.390 E 0.291 E1 0.197 e 0.022 L 0.025 ∝ 0° Notes: 1. “D” ...
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ORDERING INFORMATION Model CS5464-IS CS5464-ISZ (lead free) 14. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS5464-IS CS5464-ISZ (lead free) * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. 44 Temperature -40 to +85 °C Peak Reflow Temp MSL ...
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REVISION HISTORY Revision Date T1 NOV 2005 Target Data Sheet PP1 MAR 2006 Preliminary Release PP2 JAN 2007 Update to correspond to rev C1 Silicon F1 MAR 2007 Updated capitalization of register names for consistency with CS5467. Updated Typical ...
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Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find the one nearest to you go to IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries (“Cirrus”) believe that the information contained in ...