MSP430F21X2_17 Datasheet, PDF (43/80 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F21x2
www.ti.com
SLAS578J – NOVEMBER 2007 – REVISED JANUARY 2012
10-Bit ADC, Power Supply and Input Range Conditions⁽¹⁾
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)⁽¹⁾
PARAMETER
TEST CONDITIONS
V_CC Analog supply voltage V_SS = 0 V
V_Ax
Analog input voltage
range ⁽²⁾
All Ax terminals,
Analog inputs selected in
ADC10AE register
T_A
V_CC
MIN TYP
2.2
0
I_ADC10
ADC10 supply current⁽³⁾
f_ADC10CLK = 5 MHz,
ADC10ON = 1, REFON = 0,
ADC10SHT0 = 1,
ADC10SHT1 = 0,
ADC10DIV = 0
I: -40°C to 85°C
T: -40°C to 105°C
2.2 V
3V
0.52
0.6
I_REF+
Reference supply
current, reference buffer
disabled ⁽⁴⁾
f_ADC10CLK = 5 MHz,
ADC10ON = 0, REF2_5V = 0,
REFON = 1, REFOUT = 0
f_ADC10CLK = 5 MHz,
ADC10ON = 0, REF2_5V = 1,
REFON = 1, REFOUT = 0
I: -40°C to 85°C
T: -40°C to 105°C
2.2 V/3 V
3V
0.25
0.25
Reference buffer supply
I_REFB,0 current with
ADC10SR = 0⁽⁴⁾
f_ADC10CLK = 5 MHz
ADC10ON = 0, REFON = 1,
REF2_5V = 0, REFOUT = 1,
ADC10SR = 0
-40°C to 85°C
105°C
2.2 V/3 V
1.1
Reference buffer supply
I_REFB,1 current with
ADC10SR = 1⁽⁴⁾
f_ADC10CLK = 5 MHz,
ADC10ON = 0, REFON = 1,
REF2_5V = 0, REFOUT = 1,
ADC10SR = 1
-40°C to 85°C
105°C
2.2 V/3 V
0.5
C_I
Input capacitance
Only one terminal Ax selected at
a time
I: -40°C to 85°C
T: -40°C to 105°C
R_I
Input MUX ON
resistance
0 V ≤ V_Ax ≤ V_CC
I: -40°C to 85°C
T: -40°C to 105°C
2.2 V/3 V
MAX UNIT
3.6 V
V_CC V
1.05
mA
1.2
0.4
mA
0.4
1.4
mA
1.8
0.7
mA
0.8
27 pF
2000 Ω
(1) The leakage current is defined in the leakage current table with Px.x/Ax parameter.
(2) The analog input voltage range must be within the selected reference voltage range V_R+ to V_R- for valid conversion results.
(3) The internal reference supply current is not included in current consumption parameter I_ADC10.
(4) The internal reference current is supplied via terminal V_CC. Consumption is independent of the ADC10ON control bit, unless a
conversion is active. The REFON bit enables the built-in reference. The reference voltage must be allowed to settle before an A/D
conversion is started.
Copyright © 2007–2012, Texas Instruments Incorporated
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