78M6631-IM/F MAXIM [Maxim Integrated Products], 78M6631-IM/F Datasheet - Page 19

• Manufacturer Part Number: 78M6631-IM/F
• Description: 3-Phase Power-Measurement IC
• Manufacturer: MAXIM [Maxim Integrated Products]

2.4.7 Temperature Sensor
Table 11
shift at CE input.
1
2
calculations.
2.4.8 VREF
Table 12
1
2
Rev 1
Parameter
Nominal relationship: N(T) = S
Nominal
Sensitivity (S
Guaranteed by design; not production tested.
Parameter
VREF output voltage, VREF(22)
VREF chop step
VREF power supply sensitivity
VREF input impedance
VREF output impedance
VNOM definition
VNOM temperature coefficients:
VREF(T) deviation from VNOM(T)
VREF aging
Guaranteed by design; not production tested.
This relationship describes the nominal behavior of VREF at different temperatures.
Nominal Offset
(N
Temperature Error
S
N
VREF
ERR
N
n
n
n
n
=
)
is measured at T
=
−
4
ΔVREF/ΔV3P3A
TC1
TC2
=
. 0
VNOM
. 0
(
T
T
00107
510
)
shows the performance for the temperature sensor. The LSB values do not include the 8-bit left
shows the performance specifications for VREF. Unless otherwise specified, VREF_DIS = 0.
−
−



VNOM
⋅
(



⋅
(



N
T
n
L
3
)
L
3
(
)
T






3
3
S
2
)
(
n
−
T
2
[M26MHZ, M40MH] =
[00], [01], or [11]
[M26MHZ, M40MHZ] =
[10]
[M26MHZ, M40MH] =
[00], [01], or [11]
[M26MHZ, M40MHZ] =
[10]
N
)
Table 11: Temperature Sensor Performance Specifications
n
max(
n
during measurement calibration and is stored in MPU or CE for use in temperature
)
+
T
T
n
10



−
Table 12: VREF Performance Specifications
6
22
n
*(T-T
,
40
)
n
) + N
T
V3P3A = 3.0 to 3.6 V
VREF_DIS = 1,
VREF = 1.3 to 1.7 V
CAL =1,
I
VNOM
LOAD
n
A
, T
= +22ºC
FIR_LEN= 0
FIR_LEN=1
FIR_LEN=0
FIR_LEN=0 (L=138)
FIR_LEN=1 (L=288)
FIR_LEN=0 (L=186)
T
T = -40ºC to +85ºC
n
n
= 22ºC
= 10 µA, -10 µA
= 22°C,
Condition
(
T
)
Condition
=
VREF
(
(L=288)
(L=186)
(L=138)
22
)
+
(
T
−
1.193
22
-40
Min
-1.5
100
3.18·(52.46-TRIMT)
-10
)
Min
TC
1
1
1
+
(
-0.444
T
1.195
451200
121500
Typ
±25
49641
−
Typ
-104
-947
-255
22
)
2
TC
1.197
+40
Max
+1.5
2
2.5
40
+10
Max
1
1
ppm/year
LSB/ºC
ppm/ºC
µV/°C
Unit
µV/ºC
LSB
mV/V
Unit
ºC
mV
kΩ
kΩ
V
V
19
2