MSP430F23X_14 Datasheet, PDF (64/93 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F23x
MSP430F24x(1)
MSP430F2410
SLAS547I – JUNE 2007 – REVISED DECEMBER 2012
www.ti.com
12-Bit ADC, Timing Parameters
over recommended operating free-air temperature range (unless otherwise noted)
f_ADC12CLK
PARAMETER
TEST CONDITIONS
For specified performance of ADC12
linearity parameters
V_CC
2.2 V, 3 V
f_ADC12OSC
t_CONVERT
Internal ADC12 oscillator
Conversion time
ADC12DIV = 0,
f_ADC12CLK = f_ADC12OSC
C_VREF+ ≥ 5 µF, Internal oscillator,
f_ADC12OSC = 3.7 MHz to 6.3 MHz
External f_ADC12CLK from ACLK, MCLK,
or SMCLK,
ADC12SSEL ≉ 0
2.2 V, 3 V
2.2 V, 3 V
t_ADC12ON
Turn-on settling time of the
ADC ⁽¹⁾
See ⁽²⁾
t_Sample
Sampling time⁽¹⁾
R_S = 400 Ω,R_I = 1000 Ω, C_I = 30 pF,
τ = [R_S +R_I] × C_I ⁽³⁾
3V
2.2 V
MIN
0.45
3.7
2.06
1220
1400
NOM MAX UNIT
5 6.3 MHz
5 6.3 MHz
3.51 µs
13 ×
ADC12DIV ×
µs
1/f_ADC12CLK
100 ns
ns
(1) Limits verified by design
(2) The condition is that the error in a conversion started after t_ADC12ON is less than ±0.5 LSB. The reference and input signal are already
settled.
(3) Approximately ten Tau (τ) are needed to get an error of less than ±0.5 LSB:
t_Sample = ln(2ⁿ⁺¹) × (R_S + R_I) × C_I + 800 ns, where n = ADC resolution = 12, R_S = external source resistance
12-Bit ADC, Linearity Parameters
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
E_I
Integral linearity
error
1.4 V ≤ (V_eREF+ – V_REF–/V_eREF–) min ≤ 1.6 V
1.6 V < (V_eREF+ – V_REF–/V_eREF–) min ≤ V_AVCC
E_D
Differential linearity (V_eREF+ – V_REF–/V_eREF–) min ≤ (V_eREF+ – V_REF–/V_eREF–),
error
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_O
Offset error
(V_eREF+ – V_REF–/V_eREF–) min ≤ (V_eREF+ – V_REF–/V_eREF–),
Internal impedance of source RS < 100 Ω,
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_G
Gain error
(V_eREF+ – V_REF–/V_eREF–)min ≤ (V_eREF+ – V_REF–/V_eREF–),
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_T
Total unadjusted
error
(V_eREF+ -– V_REF–/V_eREF– )min ≤ (V_eREF+ –V_REF–/V_eREF–),
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
V_CC
2.2 V, 3 V
2.2 V, 3 V
2.2 V, 3 V
2.2 V, 3 V
2.2 V, 3 V
MIN NOM MAX UNIT
±2
LSB
±1.7
±1 LSB
±2
±4 LSB
±1.1
±2 LSB
±2
±5 LSB
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