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PDF 71M6515H Data sheet ( Hoja de datos )
| Número de pieza | 71M6515H | |
| Descripción | Energy Meter IC | |
| Fabricantes | TERIDIAN Semiconductor | |
| Logotipo |  |
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GENERAL DESCRIPTION
The 71M6515H is a high-accuracy analog front end
(AFE) IC that provides measurements for four-
quadrant 3-phase metering. The combination of a
21-bit sigma-delta A/D converter with a six-input
analog front end, a thermally compensated high pre-
cision reference and a compute engine results in
high accuracy and wide dynamic range. Patented
Single-Converter Technology™ reduces cross talk
and cost. This IC also provides RTC and battery
backup for time-of-use (TOU) metering.
Battery
RTC
COMPUTE
ENGINE
VOLTAGE
REFERENCE
RAM
CONTROL
TERIDIAN 71M6515H
UART, IRQZ
SSI
HOST
PRO-
CESSOR
DIO
Figure 1: Meter block diagram
As shown in the block diagram (Figure 1), the host
processor communicates with the 71M6515H
through a UART interface using the programmable
IRQZ interrupt. The 71M6515H calculates and accu-
mulates meter measurements for each accumulation
interval. A high-speed synchronous serial port (SSI)
is provided to facilitate high-end metering. Integrated
rectifying functions on the battery backup circuit
enable minimal external component usage and
minimum back-up current. Also, eight multi-purpose
pins are provided for control of peripherals.
www.DataSheet4U.com
71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
FEATURES
High Accuracy
• < 0.1% Wh accuracy over temperature and
2000:1 range
• Exceeds IEC62053/ANSIC12.20 specifications.
• Precision ultra-stable voltage reference
(10PPM/°C)
• Single Converter Technology™ reduces cross
talk and power consumption
• Six sensor inputs—referenced to V3P3
• Compatible with CTs, resistive shunts and
Rogowski Coil sensors
• -90dB THD max.
• Digital temperature compensation
• Sag detection
• Measures Wh, VARh, VAh, Vrms, Irms, V-to-V
phase and load angle on each phase
• Four-quadrant metering.
• Four low-jitter pulse outputs from selectable
measurements
• Four pulse count registers
• Selectable default status for pulse pins
• Same calibration data for 46Hz to 64Hz line
frequency
• Broad CT phase compensation (±7deg)
Battery Backup
• Protects accumulated data and powers real time
clock during power supply outage
• Compatible with Li-ion, NiCd, or super-capacitor
• Battery backup current 2µA typical at 25°C
External Data Interface
• UART Control Interface, two selectable data
rates
• 8 general-purpose I/O pins with alarm capability
• 5 or 10MHz selectable high speed synchronous
serial output for DSP interface
• IRQ output signal for alarms and end of measure-
ment intervals.
• Alarms on voltage sag, over-voltage, over-current
Low System Cost
• Power Consumption 30mW @ 3.3V typical
• Real-time clock with temperature compensation
• Built-in power fault detection
• Single 32kHz crystal time base
• Single-supply operation (3.3V)
• 64-lead LQFP package
Page: 1 of 57
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.4
1 page  
PARAMETER
Voltage Overhead V3P3D-V2P5
PSRR
ΔV2P5/ΔV3P3D
PARAMETER
Range for date
2.5V VOLTAGE REGULATOR
CONDITION
Reduce V3P3 until V2P5
drops 200mV
RESETZ=1, ILOAD=0
MIN
-3
www.DataSheet4U.com
71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
TYP MAX UNIT
440 mV
+3 mV/V
RTC
CONDITION
MIN TYP MAX UNIT
2000
--
2255
year
PARAMETER
Reset pulse width
Reset pulse fall time
PARAMETER
Maximum Output Power to Crystal4
Xin to Xout Capacitance
Capacitance to DGND
Xin
Xout
Watchdog RTC_OK threshold
PARAMETER
Nominal Sensitivity (Sn)4
Nominal Offset (Nn) 4
Temperature Error
ERR = (T − 25) − (N (T ) − N (25))
Sn
RESETZ
CONDITION
MIN
5
CRYSTAL OSCILLATOR
CONDITION
MIN
TEMPERATURE SENSOR
CONDITION
TA=25ºC, TA=75ºC
Nominal relationship:
N(T)= Sn*T+Nn
MIN
TYP MAX
1
TYP MAX
1
3
5
5
25
TYP
-900
40000
0
MAX
UNIT
µs
µs
UNIT
µW
pF
pF
pF
kHz
UNIT
LSB/ºC
LSB
TA = -40ºC to +85ºC
-3
+3 ºC
PULSE GENERATOR TIMING SPECIFICATIONS
PARAMETER
PULSEW, PULSER maximum rate
PULSE3, PULSE4 maximum rate
Pulse count frequency
CONDITION
APULSE=231-1,
WRATE=215-1
PULSE3=231-1,
WRATE=215-1
all pulse outputs
MIN TYP
MAX
7.56
0.15
0.15
UNIT
kHz
kHz
kHz
Page: 5 of 57
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.4
5 Page 
www.DataSheet4U.com
71M6515H
Energy Meter IC
DATA SHEET
MARCH 2008
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
0.1
TYPICAL PERFORMANCE CHARACTERISTICS
13
0.3
10 25 30
0 Deg
60 Deg
-60 Deg
180 Deg
200
100
1
10 A
100
1000
Figure 3: Wh Accuracy, 0.3A - 200A/240V
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
0.1
3
1
0.3
10
25
30
90 Deg
150 Deg
270 Deg
100 200
1
10 A 100
1000
Figure 4: VARh Accuracy for 0.3A to 200A/240V Performance.
2
1
0
-1
-2
-3
-4
-5
-6
-7
-8
1
50Hz Harmonic Data
60Hz Harmonic Data
3 5 7 9 11 13 15 17 19 21 23 25
Harmonic
Measured at current distortion amplitude of 40% and voltage distortion amplitude of 10%.
Figure 5: Meter Accuracy over Harmonics at 240V, 30A
Page: 11 of 57
© 2005-2008 TERIDIAN Semiconductor Corporation
V1.4
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet 71M6515H.PDF ] | |
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