MSP430FR5994 Datasheet, PDF (55/166 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FR5994, MSP430FR59941, MSP430FR5992, MSP430FR5964, MSP430FR5962
SLASE54 – MARCH 2016
Table 5-25 lists the linearity parameters.
Table 5-25. 12-Bit ADC, Linearity Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Integral linearity error (INL) With external voltage reference (ADC12VRSEL = 0x2,
E_I
for differential input
Integral linearity error (INL)
0x3, 0x4, 0xE, 0xF), 1.2 V ≤ V_R+ – V_R-≤ AV_CC
With external voltage reference (ADC12VRSEL = 0x2,
for single ended inputs
0x3, 0x4, 0xE, 0xF), 1.2 V ≤ V_R+ – V_R-≤ AV_CC
E_D
Differential linearity error
(DNL)
With external voltage reference (ADC12VRSEL = 0x2,
0x3, 0x4, 0xE, 0xF)
–0.99
±1.8
LSB
±2.2
+1.0 LSB
E_O
Offset error^{(1) (2)}
ADC12VRSEL = 0x1 without TLV calibration,
TLV calibration data can be used to improve the
parameter ⁽³⁾
±0.5 ±1.5 mV
With internal voltage reference V_REF = 2.5 V
(ADC12VRSEL = 0x1, 0x7, 0x9, 0xB, or 0xD),
±0.2% ±1.7%
With internal voltage reference V_REF = 1.2 V
(ADC12VRSEL = 0x1, 0x7, 0x9, 0xB, or 0xD),
±0.2% ±2.5%
E_G
Gain error
With external voltage reference without internal buffer
(ADC12VRSEL = 0x2 or 0x4) without TLV calibration,
V_R+ = 2.5 V, V_R- = AV_SS
With external voltage reference with internal buffer
(ADC12VRSEL = 0x3),
V_R+ = 2.5 V, V_R- = AV_SS
With internal voltage reference V_REF = 2.5 V
(ADC12VRSEL = 0x1, 0x7, 0x9, 0xB, or 0xD),
±1
±3
LSB
±2
±27
±0.2% ±1.8%
With internal voltage reference V_REF = 1.2 V
(ADC12VRSEL = 0x1, 0x7, 0x9, 0xB, or 0xD),
±0.2% ±2.6%
E_T
Total unadjusted error
With external voltage reference without internal buffer
(ADC12VRSEL = 0x2 or 0x4) without TLV calibration,
V_R+ = 2.5 V, V_R- = AV_SS
With external voltage reference with internal buffer
(ADC12VRSEL = 0x3),
V_R+ = 2.5 V, V_R- = AV_SS
±1
±5
LSB
±1
±28
(1) Offset is measured as the input voltage (at which ADC output transitions from 0 to 1) minus 0.5 LSB.
(2) Offset increases as I_R drop increases when V_R- is AVSS.
(3) For details, see the Device Descriptor Table section in the MSP430FR58xx, MSP430FR59xx, MSP430FR68xx, and MSP430FR69xx
Family User's Guide (SLAU367).
Copyright © 2016, Texas Instruments Incorporated
Specifications
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