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ADSST-EM-3041 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADSST-EM-3041
Beschreibung Powerful Energy Meter Chipset
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 24 Seiten
ADSST-EM-3041 Datasheet, Funktion
www.DataSheet4U.com
Powerful Energy Meter Chipset
ADSST-SALEM-3T
FEATURES
High accuracy
Supports IEC 60687/61036 and ANSI C12.1/12.20
Suitable for class0.5 and class0.2 meter
Full four quadrant measurement of parameters
SPI® compatible serial interface
Pulse output with programmable pulse constant as
pulses/kWh or Wh/pulse
Programmable duty cycle for pulse output
chipset can be interfaced to any general-purpose microproces-
sor to develop state of the art tri-vector or polyphase energy
metering solutions with a wide range of basic currents from 1 A
to 30 A. By incorporating a comprehensive data set of parame-
ters, including instantaneous measurements, accumulated
parameters, and harmonic analysis data, the ADSST-SALEM-3T
chipset meets high end energy metering requirements. The abil-
ity to easily configure the chipset for various parameters makes
it a very flexible solution.
Embedded calibration routines for gain and dc offset
The phase and nonlinearity compensation for current
Software based phase and nonlinearity compensation for
current transformers
15 kHz sampling frequency
UART mode enables a PC to directly access all computed
parameters
Flags to indicate tamper conditions
Single 3.0 V supply
transformers is done in software (patent pending) without
having to use any passive components in the circuit for
compensation, thus minimizing variations in accuracy with
temperature and time.
The ADSST-SALEM-3T measures and computes a large num-
ber of parameters essential for high end metering.
Developer’s kit to accelerate design process (See
Table 1.
Ordering Guide for separate ordering number.)
Parameter
GENERAL DESCRIPTION
DataSheet4U.cRoMmS Voltage
The ADSST-SALEM-3T energy meter chipset consists of an
efficient ADSST-218x digital signal processor (DSP), a fast and
accurate 6-channel, 16-bit ADSST-73360LAR sigma-delta ana-
log-to-digital converter (ADC), and metering software. Two
chipset versions are available to support differing ranges of
operating temperature: The ADSST-EM-3040 chipset is rated at
0°C to 70°C for commercial applications, while the ADSST-EM-
RMS Current
Active Power
Apparent Power
Inductive Reactive Power
Capacitive Reactive Power
Power Factor
Frequency
3041 chipset operates at –25°C to +85°C for industrial use.
Positive Active Energy
Negative Active Energy
Each Phase TotalDataShee
SMPS
RESISTOR
BLOCK
CT
DSP
ADC
LCD DISPLAY
SPI BUS
BOOT
FLASH
µC
Apparent Energy
Positive Inductive Reactive Energy
Negative Inductive Reactive Energy
Positive Capacitive Reactive Energy
Negative Capacitive Reactive Energy
CT
FLASH
CT ADSST-EM-3040
OPTO
Voltage Magnitude and Phase for All
Odd Harmonics up to 21st Order
RTC
RS-232
03738-0-001
Current Magnitude and Phase for All
Odd Harmonics up to 21st Order
Figure 1. Block Diagram of a Functional Meter
The ADC and DSP are interfaced to simultaneously acquire
voltage and current samples on all three phases and to perform
mathematically intensive computations to calculate various
instantaneous parameters and perform harmonic analysis. The
The ADSST-SALEM-3T offers some excellent features that
make the final meter cost-effective and easy to manufacture.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
DataSheet4Uinf.rcinogemments of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
DataSheet4 U .com






ADSST-EM-3041 Datasheet, Funktion
www.DataSheet4U.com
ADSST-SALEM-3T
ADSST-218X COMMON-MODE PINS
Table 2.
Pin Name
No. of Pins
I/O Function
BG 1 O Bus Grant Output
BGH 1 O Bus Grant Hung Output
BMS 1 O Byte Memory Select Output
BR 1 I Bus Request Input
CMS 1 O Combined Memory Select Output
DMS 1 O Data Memory Select Output
IOMS
1 O Memory Select Output
PMS 1 O Program Memory Select Output
RD 1 O Memory Read Enable Output
RESET
1 I Processor Reset Input
WR 1 O Memory Write Enable Output
IRQ2/
1 I Edge- or Level-Sensitive Interrupt Request1
PF7 I/O Programmable I/O Pin
IRQL1/
1 I Level-Sensitive Interrupt Requests1
PF6 I/O Programmable I/O Pin
IRQL0/
1 I Level-Sensitive Interrupt Requests1
PF5 I/O Programmable I/O Pin
IRQE/
1 I Edge-Sensitive Interrupt Requests1
PF4
et4U.comMODE A
1
I/O Programmable I/O Pin
I Mode Select Input−Checked only during RESET
PF0
MODE B
1
I/O Programmable I/O Pin during Normal Operation
I ModDe SaetlaeScthInepeut4t−UC.hceocmked only during RESET
PF1 I/O Programmable I/O Pin during Normal Operation
MODE C
1
I Mode Select Input−Checked only during RESET
PF2 I/O Programmable I/O Pin during Normal Operation
MODE D
1
I Mode Select Input−Checked only during RESET
PF3 I/O Programmable I/O Pin during Normal Operation
CLKIN, XTAL
2
I Clock or Quartz Crystal Input
CLKOUT
1
O Processor Clock Output
EZ-Port 9 I/O For Emulation Use
FI, FO
Flag In, Flag Out2
FL0, FL1, FL2
3
O Output Flags
GND 10 I Power and Ground
IRQ1:0
Edge- or Level-Sensitive Interrupts
PWD
1 I Power-Down Control Input
SPORT0
5
I/O Serial Port I/O Pins
SPORT1
5
I/O Serial Port I/O Pins
PWDACK
1
O Power-Down Control Output
VDDEXT
4 I External VDD (2.5 V or 3.3 V) Power (LQFP)
VDDEXT
7 I External VDD (2.5 V or 3.3 V) Power (Mini-BGA)
VDDINT
2 I Internal VDD (2.5 V) Power (LQFP)
VDDINT
4 I Internal VDD (2.5 V) Power (Mini-BGA)
1Interrupt/flag pins retain both functions concurrently. If IMASK is set to enable the corresponding interrupts, the DSP will vector to the appropriate interrupt vector
address when the pin is asserted, either by external devices or set as a programmable flag.
2SPORT configuration determined by the DSP System Control register. Software configurable.
DataShee
DataSheet4U.com
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Rev. 0 | Page 6 of 24

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ADSST-EM-3041 pdf, datenblatt
www.DataSheet4U.com
ADSST-SALEM-3T
SPECIFICATIONS—ADSST-73360LAR
(AVDD = 2.7 V to 3.6 V, DVDD = 2.7 V to 3.6 V, DGND = AGND = 0 V, fMCLK = 16.384 MHz, fSCLK = 8.192 MHz, fS = 8 kHz, TA = TMIN to
TMAX1, unless otherwise noted.)
Table 6.
Parameter
Min
Typ
Max Unit
Test Conditions
REFERENCE
REFCAP
Absolute Voltage, VREFCAP
1.08 1.2
1.32 V
REFCAP TC
50 ppm/°C 0.1 µF Capacitor Required from REFCAP to AGND2
REFOUT
Typical Output Impedance
130 Ω
Absolute Voltage, VREFOUT
1.08 1.2
1.32 V
Unloaded
Minimum Load Resistance
1
kΩ
Maximum Load Capacitance
100 pF
ADC SPECIFICATIONS
Maximum Input Range at VIN 2, 3
1.578
V p-p
Measured Differentially
–2.85
dBm
Nominal Reference Level at VIN
(0 dBm0)
1.0954
V p-p
Measured Differentially
–6.02
dBm
Absolute Gain
PGA = 0 dB
–1.3
+0.6 dB
1.0 kHz
et4U.com PGA = 38 dB
Signal to (Noise + Distortion)
0.8
+0.8 dB
1.0 kHz
PGA = 0 dB
76 DataSheet4U.cdoBm
0 Hz to 4 kHz; fS = 8 kHz
PGA = 0 dB
71 76
dB 0 Hz to 2 kHz; fS = 8 kHz
fIN = 60 kHz
PGA = 38 dB
58 dB 0 Hz to 4 kHz; fS = 64 kHz
Total Harmonic Distortion
PGA = 0 dB
–80 –71 dB 0 Hz to 2 kHz; fS = 8 kHz; fIN = 60 kHz
PGA = 38 dB
–64 dB 0 Hz to 2 kHz; fS = 64 kHz; fIN = 60 kHz
Intermodulation Distortion
–78 dB PGA = 0 dB
Idle Channel Noise
–68 dB PGA = 0 dB, fS = 64 kHz; SCLK = 16 MHz
Crosstalk ADC-to-ADC
–95 dB ADC1 at Idle; ADC2 to ADC6 Input Signal: 60 Hz
DC Offset
–30
+30 mV
PGA = 0 dB
Power Supply Rejection
–55 dB Input Signal Level at AVDD and DVDD Pins
1.0 kHz, 100 mV p-p Sine Wave
Group Delay4, 5
25 µs 64 kHz Output Sample Rate
50 µs 32 kHz Output Sample Rate
95 µs 16 kHz Output Sample Rate
190 µs 8 kHz Output Sample Rate
Input Resistance at VIN2, 4
25 kΩ6 DMCLK = 16.384 MHz
Phase Mismatch
0.15 Degrees fIN = 1 kHz
0.01 Degrees fIN = 60 Hz
DataShee
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