MSP430FG4619, MSP430FG4618, MSP430FG4617, MSP430FG4616
MSP430CG4619, MSP430CG4618, MSP430CG4617, MSP430CG4616
SLAS508J – APRIL 2006 – REVISED JUNE 2015
www.ti.com
5.32
12-Bit ADC, Temperature Sensor and Built-In V
MID
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
2.2 V
40
120
Operating supply current
REFON = 0, INCH = 0Ah,
I
SENSOR
µA
into AV
CC
terminal
(1)
ADC12ON = N/A, T
A
= 25°C
3 V
60
160
ADC12ON = 1, INCH = 0Ah,
V
SENSOR
(2)
2.2 V, 3 V
986
mV
T
A
= 0°C
TC
SENSOR
ADC12ON = 1, INCH = 0Ah
2.2 V, 3 V
3.55 ±3%
mV/°C
2.2 V
30
Sample time required if
ADC12ON = 1, INCH = 0Ah,
t
SENSOR(sample)
µs
channel 10 is selected
(3)
Error of conversion result
≤
1 LSB
3 V
30
2.2 V
N/A
(4)
Current into divider at
I
VMID
ADC12ON = 1, INCH = 0Bh
µA
channel 11
(4)
3 V
N/A
(4)
2.2 V
1.1
1.1 ±0.04
ADC12ON = 1, INCH = 0Bh,
V
MID
AV
CC
divider at channel 11
V
V
MID
≈
0.5 × V
AVCC
3 V
1.5
1.50 ±0.04
2.2 V
1400
Sample time required if
ADC12ON = 1, INCH = 0Bh,
t
VMID(sample)
ns
channel 11 is selected
(5)
Error of conversion result
≤
1 LSB
3 V
1220
(1)
The sensor current I
SENSOR
is consumed if (ADC12ON = 1 and REFON = 1), or (ADC12ON = 1 AND INCH = 0Ah and sample signal is
high). When REFON = 1, I
SENSOR
is already included in I
REF+
.
(2)
The temperature sensor offset can be as much as ±20°C. TI recommends a single-point calibration to minimize the offset error of the
built-in temperature sensor.
(3)
The typical equivalent impedance of the sensor is 51 k
Ω
. The sample time required includes the sensor-on time t
SENSOR(on)
(4)
No additional current is needed. The V
MID
is used during sampling.
(5)
The on-time t
VMID(on)
is included in the sampling time t
VMID(sample)
; no additional on time is needed.
5.33
12-Bit DAC, Supply Specifications
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
AV
CC
Analog supply voltage
AV
CC
= DV
CC
, AV
SS
= DV
SS
= 0 V
2.20
3.60
V
DAC12AMPx = 2, DAC12IR = 0,
50
110
DAC12_xDAT = 0800h
DAC12AMPx = 2, DAC12IR = 1,
DAC12_xDAT = 0800h,
50
110
Ve
REF+
= V
REF+
= AV
CC
Supply current, single DAC
I
DD
2.2 V, 3 V
µA
DAC12AMPx = 5, DAC12IR = 1,
channel
(1) (2)
DAC12_xDAT = 0800h,
200
440
Ve
REF+
= V
REF+
= AV
CC
DAC12AMPx = 7, DAC12IR = 1,
DAC12_xDAT = 0800h,
700
1500
Ve
REF+
= V
REF+
= AV
CC
DAC12_xDAT = 800h, V
REF
= 1.5 V,
2.2 V
Δ
AV
CC
= 100 mV
Power-supply rejection
PSRR
70
dB
ratio
(3) (4)
DAC12_×DAT = 800h, V
REF
= 1.5 V or 2.5 V,
3 V
Δ
AV
CC
= 100 mV
(1)
No load at the output pin, DAC12_0 or DAC12_1, assuming that the control bits for the shared pins are set properly.
(2)
Current into reference terminals not included. If DAC12IR = 1 current flows through the input divider; see Reference Input specifications.
(3)
PSRR = 20 × log{
Δ
AV
CC
/
Δ
V
DAC12_xOUT
}.
(4)
V
REF
is applied externally. The internal reference is not used.
38
Specifications
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