MSP430F2274-EP_11 Datasheet, PDF (44/80 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2274-EP
SLAS614D – SEPTEMBER 2008 – REVISED MAY 2011
www.ti.com
10-Bit ADC, Temperature Sensor and Built-In V_MID – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
I_SENSOR
PARAMETER
Temperature sensor
supply current⁽¹⁾
TEST CONDITIONS
REFON = 0, INCHx = 0Ah,
T_A = 25°C
T_A
–55°C to 125°C
V_CC
2.2 V
3V
MIN TYP MAX UNIT
40 120
μA
60 160
TC_SENSOR
ADC10ON = 1,
INCHx = 0Ah⁽²⁾
–55°C to 125°C 2.2 V/3 V 3.44 3.55 3.66 mV/°C
V_{Offset,Sensor} Sensor offset voltage
ADC10ON = 1,
INCHx = 0Ah⁽²⁾
–55°C to 125°C
-100
100 mV
Temperature sensor voltage
at T_A = 125°C (T version
only)
–55°C to 125°C
1265 1365 1465
V_Sensor
Sensor output voltage⁽³⁾
t_{Sensor(sample)}
Sample time required
if channel 10 is selected⁽⁴⁾
Temperature sensor voltage
at T_A = 85°C
Temperature sensor voltage
at T_A = 25°C
Temperature sensor voltage
at T_A = 0°C
ADC10ON = 1, INCHx = 0Ah,
Error of conversion result
≤ 1 LSB
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
1195 1295 1395
2.2 V/3 V
mV
985 1085 1185
895 995 1095
2.2 V/3 V 30
μs
I_VMID
Current into divider
at channel 11⁽⁵⁾
ADC10ON = 1, INCHx = 0Bh –55°C to 125°C
2.2 V
3V
NA
μA
NA
V_MID
V_CC divider at channel 11
ADC10ON = 1, INCHx = 0Bh,
V_MID is ≉ 0.5 × V_CC
–55°C to 125°C
2.2 V
3V
1.06 1.1 1.14
V
1.46 1.5 1.54
t_VMID(sample)
Sample time required
if channel 11 is selected⁽⁶⁾
ADC10ON = 1, INCHx = 0Bh,
Error of conversion result
≤ 1 LSB
–55°C to 125°C
2.2 V
3V
1400
1220
ns
(1) The sensor current I_SENSOR is consumed if (ADC10ON = 1 and REFON = 1) or (ADC10ON = 1 and INCH = 0Ah and sample signal is
high). When REFON = 1, I_SENSOR is included in I_REF+. When REFON = 0, I_SENSOR applies during conversion of the temperature sensor
input (INCH = 0Ah).
(2) The following formula can be used to calculate the temperature sensor output voltage:
V_Sensor,typ = TC_Sensor (273 + T [°C] ) + V_{Offset,sensor} [mV] or
V_Sensor,typ = TC_Sensor T [°C] + V_Sensor(T_A = 0°C) [mV]
(3) Results based on characterization and/or production test, not TC_Sensor or V_{Offset,sensor}.
(4) The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time t_SENSOR(on).
(5) No additional current is needed. The V_MID is used during sampling.
(6) The on-time t_VMID(on) is included in the sampling time t_VMID(sample); no additional on time is needed.
Operational Amplifier (OA) Supply Specifications – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
V_CC Supply voltage range
I_CC
Supply current⁽¹⁾
TEST CONDITIONS
Fast Mode
Medium Mode
Slow Mode
T_A
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
V_CC
2.2 V/3 V
MIN TYP
2.2
180
110
50
PSSR Power-supply rejection ratio Noninverting
2.2 V/3 V
70
(1) Corresponding pins configured as OA inputs and outputs, respectively.
MAX
3.6
290
190
80
UNIT
V
μA
dB
44
Copyright © 2008–2011, Texas Instruments Incorporated