Datasheet

OSR
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
10.00 100.00 1000.00
SINAD − dB
PW, or N
RSA
MSP430F2013-EP
www.ti.com SLAS774A –JULY 2011– REVISED OCTOBER 2011
Typical Characteristics, SD16_A SINAD Performance Over OSR
SINAD PERFORMANCE
vs
OSR
(f
SD16
= 1 MHz, SD16REFON = 1,SD16GAINx = 1)
Figure 17.
SD16_A, Performance (f
SD16
= 1 MHz, SD16OSRx = 256, SD16REFON = 1)
(1)
over recommended ranges of supply voltage and up to operating free-air temperature T
A
= 105°C
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
SD16GAINx = 1 0.97 1.00 1.02
SD16GAINx = 2 1.90 1.96 2.02
SD16GAINx = 4 3.76 3.86 3.96
G Nominal gain 3 V
SD16GAINx = 8 7.36 7.62 7.84
SD16GAINx = 16 14.56 15.04 15.52
SD16GAINx = 32 27.20 28.35 29.76
ΔG/ΔT Gain temperature drift SD16GAINx = 1
(2)
3 V 15 ppm/°C
SD16GAINx = 1 ±0.2
E
OS
Offset error 3 V %FSR
SD16GAINx = 32 ±1.5
SD16GAINx = 1 ±4 ±20
Offset error temperature
ΔE
OS
/ΔT 3 V ppm FSR/°C
coefficient
SD16GAINx = 32 ±20 ±100
SD16GAINx = 1,
Common-mode input signal: >90
V
ID
= 500 mV, f
IN
= 50 Hz, 100 Hz
Common-mode rejection
CMRR 3 V dB
ratio
SD16GAINx = 32,
Common-mode input signal: >75
V
ID
= 16 mV, f
IN
= 50 Hz, 100 Hz
SD16GAINx = 1, V
IN
= 500 mV,
DC PSR DC power supply rejection 2.5 V to 3.6 V 0.35 %/V
V
CC
= 2.5 V to 3.6 V
(3)
AC power supply rejection SD16GAINx = 1,
AC PSRR 3 V >80 dB
ratio V
CC
= 3 V ± 100 mV, f
IN
= 50 Hz
(1) Parameters are characterized up to T
A
= 105°C unless otherwise noted.
(2) Calculated using the box method: (MAX(-40°C to 85°C) - MIN(-40°C to 85°C)) / MIN(-40°C to 85°C) / (85°C - (-40°C))
(3) Calculated using the ADC output code and the box method:
(MAX-code(2.5 V to 3.6 V) - MIN-code(2.5 V to 3.6 V)) / MIN-code(2.5 V to 3.6 V) / (3.6 V - 2.5 V)
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