MSP430F2619S-HT Datasheet, PDF (63/90 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F2619S-HT
www.ti.com
SLAS697B – MARCH 2010 – REVISED JUNE 2011
12-Bit ADC Timing Parameters – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
f_ADC12CLK
PARAMETER
ADC12 input clock
frequency
TEST CONDITIONS
For specified performance of ADC12 linearity
parameters
V_CC
2.2 V/3 V
MIN TYP MAX
0.45
5 6.3
f_ADC12OSC
t_CONVERT
t_ADC12ON ⁽¹⁾
ADC12 built-in oscillator
frequency
Conversion time
Turn-on settling time of
the ADC
ADC12DIV = 0,
f_ADC12CLK = f_ADC12OSC
ADC12 built-in oscillator,
C_VREF+ ≥ 5 μF,
f_ADC12OSC = 3.7 MHz to 6.3 MHz
External f_ADC12CLK from ACLK, MCLK, or
SMCLK: ADC12SSEL ≠ 0
See ⁽²⁾
2.2 V/3 V
3.7
5 6.3
2.2 V/3 V
2.06
3.51
13 x ADC12DIV
x 1/f_ADC12CLK
100
t_Sample ⁽¹⁾
Sampling time
RS = 400 Ω, RI = 1000 Ω, CI = 30 pF,
τ = [R_S + R_I] x C_I ⁽³⁾
3V
2.2 V
1220
1400
UNIT
MHz
MHz
μs
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) x (R_S + R_I) x C_I+ 800 ns where n = ADC
resolution = 12, R_S = external source resistance.
12-Bit ADC Linearity Parameters – Electrical Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
MIN TYP
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
2.2 V/3 V
E_D
Differential linearity error
(V_eREF+ - V_REF-/V_eREF-)min ≤ (V_eREF+ - V_REF-/V_eREF-),
C_VREF+ = 10 μF (tantalum) and 100 nF (ceramic)
2.2 V/3 V
E_O
Offset error
(V_eREF+ - V_REF-/V_eREF-)min ≤ (V_eREF+ - V_REF-/V_eREF-),
Internal impedance of source R_S < 100 Ω,
2.2 V/3 V
±2
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)
2.2 V/3 V
±1.1
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)
2.2 V/3 V
±2
MAX
±2
±1.7
±1
±4
±2
±5
UNIT
LSB
LSB
LSB
LSB
LSB
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