78M6612 Maxim, 78M6612 Datasheet - Page 33

• Manufacturer Part Number: 78M6612
• Description: The Teridian™ 78M6612 is a highly integrated, single-phase, power and energy measurement and monitoring system-on-chip (SoC) that includes a 32-bit compute engine (CE), an MPU core, RTC, and flash
• Manufacturer: Maxim

DS_6612_001
4.4.10 VREF, VBIAS
Unless otherwise specified, VREF_DIS=0.
1
4.4.11 LCD Drivers
The information in Table 18 applies to all COM and SEG pins.
VLCD is V3P3SYS in MISSION mode and VBAT in BROWNOUT and LCD modes.
Rev 2
VREF
Parameter
VREF output voltage, VNOM(25)
VREF chop step
VREF output impedance
VNOM definition
VREF temperature coefficients
VREF aging
VREF(T) deviation from VNOM(T)
VBIAS voltage
This relationship describes the nominal behavior of VREF at different temperatures.
Parameter
VLC2 Max Voltage
VLC1 Voltage,
VLC0 Voltage,
TC1
TC2
(
T
VNOM
)
⅓ bias
½ bias
⅓ bias
½ bias
−
VNOM
1
(
T
)
10
62
6
Table 17: VREF, VBIAS Performance Specifications
Table 18: LCD Drivers Performance Specifications
With respect to VLCD
With respect to 2*VLC2/3
With respect to VLC2/2
With respect to VLC2/3
With respect to VLC2/2
Ta = 22ºC
VREF_CAL =1,
I
Ta = -40ºC to +85ºC
Ta = 25 ºC
Ta = -40 ºC to 85 ºC
VNOM
LOAD
Condition
= 10 µA, -10 µA
Condition
(
T
)
=
VREF
(
22
)
+
(
T
−
1.193
22
(-1%)
(-4%)
Min
-40
Min
-0.1
)
-4
-3
-3
-3
TC
1
+
(
-0.341
T
1.195
+7.0
Typ
Typ
±25
1.6
1.6
−
22
)
78M6612 Data Sheet
2
TC
(+1%)
(+4%)
1.197
Max
Max
0+.1
2
+40
2.5
50
+2
+2
+2
0
µV/°C
µV/ºC
ppm/º
ppm/
Unit
year
mV
Unit
kΩ
C
V
V
V
V
%
%
%
%
V
2
33