Texas Instruments IC MCU 16B MSP430F2419TPM LQFP-64 TID MSP430F2419TPM 데이터 시트
제품 코드
MSP430F2419TPM
Positive
Negative
VR+
Gain Error
Offset Error
DAC Code
DAC VOUT
Ideal transfer
function
function
RLoad =
AVCC
CLoad = 100pF
2
DAC Output
MSP430F261x
MSP430F241x
MSP430F241x
SLAS541K – JUNE 2007 – REVISED NOVEMBER 2012
12-Bit DAC Linearity Specifications
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
Resolution
12-bit monotonic
12
bits
V
REF
= 1.5 V,
2.2 V
±2.0
±8.0
DAC12AMPx = 7, DAC12IR = 1
INL
Integral nonlinearity
(1)
LSB
V
REF
= 2.5 V,
3 V
DAC12AMPx = 7, DAC12IR = 1
V
REF
= 1.5 V,
2.2 V
±0.4
±1.0
DAC12AMPx = 7, DAC12IR = 1
DNL
Differential nonlinearity
(1)
LSB
V
REF
= 2.5 V,
3 V
DAC12AMPx = 7, DAC12IR = 1
V
REF
= 1.5 V,
2.2 V
±21
DAC12AMPx = 7, DAC12IR = 1
Offset voltage without
calibration
calibration
(1) (2)
V
REF
= 2.5 V,
3 V
DAC12AMPx = 7, DAC12IR = 1
E
O
mV
V
REF
= 1.5 V,
2.2 V
±2.5
DAC12AMPx = 7, DAC12IR = 1
Offset voltage with
calibration
calibration
(1) (2)
V
REF
= 2.5 V,
3 V
DAC12AMPx = 7, DAC12IR = 1
Offset error temperature
d
E(O)
/d
T
2.2 V, 3 V
30
µV/C
coefficient
(3)
V
REF
= 1.5 V
2.2 V
±3.50
E
G
Gain error
(3)
% FSR
V
REF
= 2.5 V
3 V
10
ppm of
d
E(G)
/d
T
Gain temperature coefficient
(3)
2.2 V, 3 V
FSR/°C
DAC12AMPx = 2
100
t
Offset_Cal
Time for offset calibration
(4)
DAC12AMPx = 3, 5
2.2 V, 3 V
32
ms
DAC12AMPx = 4, 6, 7
6
(1)
Parameters calculated from the best-fit curve from 0x0A to 0xFFF. The best-fit curve method is used to deliver coefficients "a" and "b" of
the first-order equation: y = a + b × x. VDAC12_xOUT = E
the first-order equation: y = a + b × x. VDAC12_xOUT = E
O
+ (1 + E
G
) × (V
eREF+
/4095) × DAC12_xDAT, DAC12IR = 1.
(2)
The offset calibration works on the output operational amplifier. Offset calibration is triggered setting bit DAC12CALON.
(3)
Parameters calculated from the best-fit curve from 0x0A to 0xFFF. The best-fit curve method is used to deliver coefficients "a" and "b" of
the first-order equation: y = a + b × x. VDAC12_xOUT = E
the first-order equation: y = a + b × x. VDAC12_xOUT = E
O
+ (1 + E
G
) × (V
eREF+
/4095) × DAC12_xDAT, DAC12IR = 1.
(4)
The offset calibration can be done if DAC12AMPx = {2, 3, 4, 5, 6, 7}. The output operational amplifier is switched off with DAC12AMPx=
{0, 1}. The DAC12 module should be configured prior to initiating calibration. Port activity during calibration may affect accuracy and is
not recommended.
{0, 1}. The DAC12 module should be configured prior to initiating calibration. Port activity during calibration may affect accuracy and is
not recommended.
Figure 41. Linearity Test Load Conditions and Gain/Offset Definition
Copyright © 2007–2012, Texas Instruments Incorporated
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