MSP430F23X Datasheet, PDF (62/93 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F23x
MSP430F24x(1)
MSP430F2410
SLAS547F – JUNE 2007 – REVISED APRIL 2011
www.ti.com
12-bit ADC, Power Supply and Input Range Conditions⁽¹⁾
over recommended operating free-air temperature range (unless otherwise noted)
AV_CC
V_(P6.x/Ax)
I_ADC12
PARAMETER
Analog supply voltage
Analog input voltage
range ⁽²⁾
Operating supply current
into AV_CC terminal⁽³⁾
TEST CONDITIONS
AV_CC and DV_CC are connected together
AV_SS and DV_SS are connected together
V_(AVSS) = V_(DVSS) = 0 V
All P6.0/A0 to P6.7/A7 terminals, Analog inputs
selected in ADC12MCTLx register,
P6Sel.x = 1, 0 ≤ × ≤ 7,
V_(AVSS) ≤ V_P6.x/Ax ≤ V_(AVCC)
f_ADC12CLK = 5 MHz,
ADC12ON = 1, REFON = 0,
SHT0 = 0, SHT1 = 0, ADC12DIV = 0
V_CC
2.2 V
3V
I_REF+
Operating supply current
into AV_CC terminal⁽⁴⁾
f_ADC12CLK = 5 MHz,
ADC12ON = 0, REFON = 1, REF2_5V = 1
f_ADC12CLK = 5 MHz,
ADC12ON = 0, REFON = 1, REF2_5V = 0
3V
2.2 V
3V
C_I
Input capacitance⁽⁵⁾
Only one terminal can be selected at one time,
P6.x/Ax
2.2 V
R_I
Input MUX ON
resistance ⁽⁵⁾
0 V ≤ V_Ax ≤ V_AVCC
3V
MIN TYP
2.2
MAX UNIT
3.6 V
0
0.65
0.8
0.5
0.5
0.5
V_AVCC V
0.8
mA
1
0.7 mA
0.7
mA
0.7
40 pF
2000 Ω
(1) The leakage current is defined in the leakage current table with P6.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_ADC12.
(4) The internal reference current is supplied via terminal AV_CC. Consumption is independent of the ADC12ON control bit, unless a
conversion is active. The REFON bit enables settling of the built-in reference before starting an A/D conversion.
(5) Not production tested, limits verified by design.
12-Bit ADC, External Reference⁽¹⁾
over recommended operating free-air temperature range (unless otherwise noted)
V_eREF+
V_REF–/V_eREF–
(V_eREF+ –
V_REF–/V_eREF–)
I_VeREF+
I_{VREF–/VeREF–}
PARAMETER
Positive external reference voltage input
Negative external reference voltage input
Differential external reference voltage input
Static leakage current
Static leakage current
TEST CONDITIONS
V_eREF+ > V_REF–/V_eREF– ⁽²⁾
V_eREF+ > V_REF–/V_eREF– ⁽³⁾
V_eREF+ > V_REF–/V_eREF– ⁽⁴⁾
0 V ≤ V_eREF+ ≤ V_AVCC
0 V ≤ V_eREF– ≤ V_AVCC
V_CC
2.2 V/3 V
2.2 V/3 V
MIN MAX UNIT
1.4 V_AVCC V
0 1.2 V
1.4 V_AVCC V
±1 µA
±1 µA
(1) The external reference is used during conversion to charge and discharge the capacitance array. The input capacitance, C_I, is also the
dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the
recommendations on analog-source impedance to allow the charge to settle for 12-bit accuracy.
(2) The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced
accuracy requirements.
(3) The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced
accuracy requirements.
(4) The accuracy limits minimum external differential reference voltage. Lower differential reference voltage levels may be applied with
reduced accuracy requirements.
62
Copyright © 2007–2011, Texas Instruments Incorporated