78M6612 View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

78M6612

Single-Phase, Dual-Outlet Power and Energy Measurement IC

Maxim Integrated 

DS_6612_001

78M6612 Data Sheet

4.4.10 VREF, VBIAS

Unless otherwise specified, VREF_DIS=0.

Table 17: VREF, VBIAS Performance Specifications

Parameter

VREF output voltage, VNOM(25)

VREF chop step

VREF output impedance

VNOM definition1

Condition

Min Typ Max

Ta = 22ºC

1.193 1.195 1.197

50

VREF_CAL =1,

ILOAD = 10 µA, -10 µA

2.5

VNOM (T ) = VREF(22) + (T − 22)TC1+ (T − 22)2 TC2

VREF temperature coefficients

TC1

TC2

+7.0

-0.341

VREF aging

±25

VREF(T) deviation from VNOM(T)

VREF (T ) − VNOM (T ) 106

Ta = -40ºC to +85ºC

-40

VNOM

62

VBIAS voltage

Ta = 25 ºC

Ta = -40 ºC to 85 ºC

(-1%) 1.6

(-4%) 1.6

1 This relationship describes the nominal behavior of VREF at different temperatures.

+40

(+1%)

(+4%)

Unit

V

mV

kΩ

V

µV/ºC

µV/°C2

ppm/

year

ppm/º

C

V

V

4.4.11 LCD Drivers

The information in Table 18 applies to all COM and SEG pins.

Table 18: LCD Drivers Performance Specifications

Parameter

VLC2 Max Voltage

VLC1 Voltage,

⅓ bias

½ bias

VLC0 Voltage,

⅓ bias

½ bias

Condition

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

Min Typ Max Unit

-0.1

0+.1

V

-4

0

%

-3

+2

%

-3

+2

%

-3

+2

%

VLCD is V3P3SYS in MISSION mode and VBAT in BROWNOUT and LCD modes.

Rev 2

33

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