MSP430F673X Datasheet, PDF (78/121 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F673x
MSP430F672x
SLAS731A – DECEMBER 2011 – REVISED APRIL 2012
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10-Bit ADC, Timing Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
f_ADC10CLK
TEST CONDITIONS
For specified performance of ADC10_A linearity
parameters
V_CC
2.2 V, 3 V
MIN TYP MAX UNIT
0.45
5 5.5 MHz
f_ADC10OSC
Internal ADC10_A
oscillator ⁽¹⁾
ADC10DIV = 0, f_ADC10CLK = f_ADC10OSC
2.2 V, 3 V
4.4 5.0 5.6 MHz
t_CONVERT Conversion time
REFON = 0, Internal oscillator, 12 ADC10CLK
cycles, 10-bit mode
f_ADC10OSC = 4 MHz to 5 MHz
2.2 V, 3 V
2.4
3.0
µs
External f_ADC10CLK from ACLK, MCLK or SMCLK,
(2)
ADC10SSEL ≠ 0
t_ADC10ON
t_Sample
Turn on settling time of
the ADC
Sampling time
See ⁽³⁾
R_S = 1000 Ω, R_I = 96 kΩ, C_I = 3.5 pF⁽⁴⁾
R_S = 1000 Ω, R_I = 36 kΩ, C_I = 3.5 pF⁽⁴⁾
1.8 V
3
3V
1
100 ns
µs
µs
(1) The ADC10OSC is sourced directly from MODOSC inside the UCS.
(2) 12 × ADC10DIV × 1/f_ADC10CLK
(3) The condition is that the error in a conversion started after t_ADC10ON is less than ±0.5 LSB. The reference and input signal are already
settled.
(4) Approximately eight Tau (t) are needed to get an error of less than ±0.5 LSB
78
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