71M6543F Datasheet, PDF (141/157 Pages) Maxim Integrated Products – Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation

71M6543F/H and 71M6543G/GH Data Sheet
Parameter
Condition
Min Typ Max Unit
VSYS to VLCD switch impedance
VBAT to VLCD switch impedance
LCD Boost Frequency
VLCD IOH current
(VLCD(0)-VLCD(IOH)<0.25)
V3P3 = 3.3 V,
RVLCD=removed, LCD_BAT=0,
LCD_VMODE[1:0]=0,
∆ILCD=10 µA
V3P3 = 0 V, VBAT = 2.5 V,
RVLCD =removed, LCD_BAT =1,
LCD_VMODE[1:0]=0,
∆ILCD=10 µA
LCD_VMODE[1:0] = 2,
RVLCD = removed,
CVLCD = removed
PLL_FAST=1
PLL_FAST=0
LCD_VMODE[1:0] = 2,
LCD_CLK[1:0] = 2,
RVLCD = removed,
V3P3 = 3.3V,
LCD_DAC[4:0] = 1F
750
Ω
700
Ω
820
kHz
786
kHz
10
µA
From LCDADJ0 and LCDADJ12 fuses:
𝐿𝐶𝐷𝐴𝐷𝐽(𝐿𝐶𝐷_𝐷𝐴𝐶)
=
5𝑚𝑉
�𝐿𝐶𝐷𝐴𝐷𝐽0
+
𝐿𝐶𝐷𝐴𝐷𝐽12 −
12
𝐿𝐶𝐷𝐴𝐷𝐽0
𝐿𝐶𝐷_𝐷𝐴𝐶�
𝐿𝐶𝐷_𝐷𝐴𝐶
𝑉𝐿𝐶𝐷_{𝑁𝑂𝑀}(𝐿𝐶𝐷_𝐷𝐴𝐶) = 2.65 + 2.65 ₃₁ + 𝐿𝐶𝐷𝐴𝐷𝐽(𝐿𝐶𝐷_𝐷𝐴𝐶)
The above equations describe the nominal value of VLCD for a specific LCD_DAC value. The
specifications below list the maximum deviation between actual VLCD and VLCDnom. Note that when
VCC and boost are insufficient, the LCD DAC will not reach its target value and a large negative error
will occur.
LCD_DAC Error. VLCD-VLCDnom
Full Scale, with Boost
V3P3 =3.6 V
V3P3 =3.0 V
VBAT=4.0 V, V3P3=0, BRN Mode
VBAT=2.5 V, V3P3=0, BRN Mode
LCD_VMODE = 10,
LCD_DAC[4:0] = 1F,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
-0.4
-0.15
-1.3
0.15
V
0.15
V
0.15
V
V
LCD_DAC Error. VLCD-VLCDnom
DAC=12, with Boost
V3P3 = 3.6 V
V3P3 = 3.0 V
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_VMODE = 10,
LCD_DAC[4:0] = C,
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
-0.15
-0.15
-0.15
0.15
V
0.15
V
0.15
V
LCD_DAC Error. VLCD-VLCDnom
LCD_VMODE = 2,
Zero Scale, with Boost
LCD_DAC[4:0] =0,
V3P3 = 3.6 V
LCD_CLK[1:0]=2,
V3P3 = 3.0 V
LCD_MODE[2:0]=6
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
LCD_DAC Error. VLCD-VLCDnom
LCD_VMODE = 1,
Full Scale, no Boost
LCD_DAC[4:0] = 1F,
V3P3 = 3.6 V (see note 1)
LCD_CLK[1:0]=2,
V3P3 = 3.0 V (see note 1)
LCD_MODE[2:0]=6
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
-0.15
-0.15
-0.15
-0.15
-2.1
-2.8
-1.8
-3.2
0.15
V
0.15
V
0.15
V
0.15
V
V
V
V
V
LCD_DAC Error. VLCD-VLCDnom
LCD_VMODE = 1,
DAC=12, no Boost
LCD_DAC[4:0] = C,
V3P3 = 3.6 V
V3P3 = 3.0 V
LCD_CLK[1:0]=2,
LCD_MODE[2:0]=6
VBAT = 4.0 V, V3P3 = 0 V, BRN Mode
VBAT = 2.5 V, V3P3 = 0 V, BRN Mode
-0.5
-1.1
-0.15¹
-1.5¹
V
V
0.15¹
V
V
v1.2
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