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,

1.193

1.195

1.197

V

71M6601, 71M6603,

1.180

1.195

1.210

VREF Output Impedance

on TMUXOUT

8

k

Ω

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)

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

VREF(T) Deviation from VNOM(T) (Note 1)

62

10

)

(

)

(

)

(

6

T

VNOM

T

VNOM

T

VREF

−

-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

VREF(T) Deviation from VNOM(T) (Note 1)

62

10

)

(

)

(

)

(

6

T

VNOM

T

VNOM

T

VREF

−

-50

+50

ppm/

°C

71M6601, 71M6603, AND 71M6103 (1% ACCURACY CLASS)

VNOM Temperature Coefficients:

TC1, TC2

TC1 = -34.8

µV/°C

TC2 = -0.599

VREF(T) Deviation from VNOM(T) (Note 1)

45

10

)

(

)

(

)

(

6

T

VNOM

T

VNOM

T

VREF

−

-100

+100

ppm/

°C

Note 1: Guaranteed by design; not production tested.