Datasheet

71M6xxx Data Sheet
13
4.4.5 VREF Performance Specifications
Table 10 shows the performance specifications for the ADC reference voltage (VREF).
Table 10: VREF Performance Specifications
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF Output Voltage
71M6201, 71M6203,
71M6113: T
A
= +22°C
1.193 1.195 1.197
V
71M6601, 71M6603,
71M6103: T
A
= +22°C
1.180 1.195 1.210
VREF Output Impedance
I
LOAD
= 10µA, -10µA
on TMUXOUT
8
kΩ
VREF Power-Supply Sensitivity:
ΔVREF/ΔVCC
VCC = 2.8V to 3.6V
-1.5
+1.5
mV/V
VCC = 2.5V to 3.6V
-2
+2
VREF Chop Step (Trimmed)
VREF(CROSS = 1) -
VREF(CROSS = 0)
-22 0 +22 mV
VNOM Definition
VNOM(T) = VREF(22) + (T - 22)TC1 + (T - 22)
2
TC2
V
71M6201 AND 71M6203 (0.2% ACCURACY CLASS)
VNOM Temperature Coefficients:
TC1, TC2
TC1 = 0.0538 x TRIMT + 1.587(TRIMBGB - TRIMBGD) +
27.279
µV/°C
TC2 = -0.433 - TRIMT x 0.000854
µV/°C
2
VREF(T) Deviation from VNOM(T) (Note 1)
62
10
)(
)()(
6
TVNOM
TVNOMTVREF −
-15
+15
ppm/°C
71M6113 (0.5% ACCURACY CLASS)
VNOM Temperature Coefficients:
TC1, TC2
TC1 = 251 - TRIMT x 4.60
µV/°C
TC2 = -0.433 - TRIMT x 0.000854
µV/°C
2
VREF(T) Deviation from VNOM(T) (Note 1)
62
10
)(
)()(
6
TVNOM
TVNOMTVREF −
-50 +50
ppm/°C
71M6601, 71M6603, AND 71M6103 (1% ACCURACY CLASS)
VNOM Temperature Coefficients:
TC1, TC2
TC1 = -34.8
µV/°C
TC2 = -0.599
µV/°C
2
VREF(T) Deviation from VNOM(T) (Note 1)
45
10
)(
)()(
6
TVNOM
TVNOMTVREF −
-100 +100
ppm/°C
Note 1: Guaranteed by design; not production tested.