Datasheet

71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
NOVEMBER 2010
Page: 89 of 98 © 2005–2010 Teridian Semiconductor Corporation V2.7
A Maxim Integrated Products Brand
ADC CONVERTER, VDD REFERENCED
FIR_LEN=0, VREF_DIS=0, VDDREFZ=0
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
Recommended Input Range
(Vin-V3P3A)
-250 250
mV
peak
Voltage to Current Crosstalk:
)cos(
*10
6
VcrosstalkVin
Vin
Vcrosstalk
∠−∠
Vin = 200mV peak, 65Hz,
on VA
Vcrosstalk = largest
measurement on IA or IB
-10
1
10
1
μV/V
THD (First 10 harmonics)
250mV- peak
20mV- peak
Vin=65Hz,
64kpts FFT, Blackman-
Harris window
-75
-90
dB
dB
Input Impedance
Vin=65Hz
40
90
kΩ
Temperature coefficient of Input
Impedance
Vin=65Hz 1.7 Ω/°C
LSB size
FIR_LEN
=1 150 nV/LSB
Digital Full Scale
±
2097152
LSB
ADC Gain Error versus
%Power Supply Variation
3
.3/33100
/35710
6
APV
VnVNout
INPK
∆
∆
Vin=200mV peak, 65Hz
V3P3A=3.0v, 3.6V
50 ppm/%
Input Offset (Vin-V3P3A)
-10
10
mV
1
Guaranteed by design, not subject to test.
OPTICAL INTERFACE
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
OPT_TX V
OH
(V3P3D-OPT_TX)
I
SOURCE
=1mA
0.4
V
OPT_TX V
OL
I
SINK
=20mA
0.7
V
OPT_RX Vin Threshold
(Vin
RISING
+Vin
FALLING
)/2
200 250 300 mV
OPT_RX Vin Hysteresis
(Vin
RISING
-Vin
FALLING
)
5 30 mV
OPT_RX input impedance
|Vin|≤300mV
1
MΩ
TEMPERATURE SENSOR
PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
Nominal Sensitivity (S
n
)
2
T
A
=25ºC, T
A
=75ºC
Nominal relationship:
N(T)= S
n
*T+N
n
-900
LSB/ºC
Nominal Offset (N
n
)
2
400000 LSB
Temperature Error
1
n
S
NTN
TERR
))25()((
)25(
−
−−=
T
A = -40ºC to +85ºC -3
1
3
1
ºC
1
Guaranteed by design, not subject to test.
2
This parameter defines a nominal relationship rather than a measured parameter. Correct circuit operation is verified with other specs that
use this nominal relationship as a reference.