71M6533 Datasheet, PDF (106/124 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6533/71M6534 Data Sheet
FDS_6533_6534_004
5.4.8 2.5 V Voltage Regulator
Unless otherwise specified, the load = 5 mA.
Table 72: 2.5 V Voltage Regulator Performance Specifications
Parameter
Condition
Min Typ Max
V2P5
Iload = 0
2.3
2.5
2.7
V2P5 load regulation
Iload = 0 mA to 5 mA
40
Voltage overhead V3P3SYS-V2P5 Iload = 5 mA, reduce V3P3 460
until V2P5 drops 200 mV
PSSR ∆V2P5/∆V3P3
RESET=0, iload=0
-2
+2
Unit
V
mV
mV
mV/V
5.4.9 Low-Power Voltage Regulator
Unless otherwise specified, V3P3SYS = V3P3A = 0, PB=GND (BROWNOUT).
Table 73: Low-Power Voltage Regulator Performance Specifications
Parameter
V2P5
V2P5 load regulation
VBAT voltage requirement
PSRR ΔV2P5/ΔVBAT
Condition
Min Typ Max
ILOAD = 0
2.3 2.5 2.7
ILOAD = 0 mA to 1 mA
30
ILOAD = 1 mA, reduce VBAT
until REG_LP_OK = 0
3.0
ILOAD = 0
-50
50
Unit
V
mV
V
mV/V
5.4.10 Crystal Oscillator
Table 74: Crystal Oscillator Performance Specifications
Parameter
Maximum Output Power to Crystal ⁴
XIN to XOUT Capacitance ¹
Capacitance to DGND ¹
XIN
XOUT
Condition
Crystal connected
RTCA_ADJ = 0
Min Typ Max Unit
1
μW
3
pF
5
pF
5
pF
5.4.11 Optical Interface
Table 75: Optical Interface Performance Specifications
Parameter
OPT_TX VOH (V3P3D-OPT_TX)
OPT_TX VOL
Condition
ISOURCE =1 mA
ISINK = 20 mA
Min Typ Max Unit
0.4
V
0.7
V
5.4.12 LCD DAC
Table 76: LCD DAC Performance Specifications
Parameter
Condition
Min Typ Max Unit
VLCD Voltage
V_LCD = V 3P3⋅ (1− 0.059 ⋅ LCD _ DAC) − 0.019V 1 ≤ LCD_DAC ≤ 7 -10
+10
%
106
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