MSP430FG4619 Datasheet, PDF (37/114 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FG4619, MSP430FG4618, MSP430FG4617, MSP430FG4616
MSP430CG4619, MSP430CG4618, MSP430CG4617, MSP430CG4616
SLAS508J – APRIL 2006 – REVISED JUNE 2015
5.30 12-Bit ADC, Timing Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
f_ADC12CLK
TEST CONDITIONS
For specified performance of ADC12
linearity parameters
V_CC
2.2 V, 3 V
MIN
0.45
TYP MAX UNIT
5 6.3 MHz
f_ADC12OSC
Internal ADC12
oscillator
t_CONVERT 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
3.7
5 6.3 MHz
2.06
3.51
µs
13 × ADC12DIV
× 1/f_ADC12CLK
t_ADC12ON
Turnon settling time
of the ADC
(1)
100 ns
t_Sample
Sampling time
R_S = 400 Ω,R_I = 1000 Ω,
C_I = 30pF, τ = [RS +RI] × C_I ⁽²⁾
3V
2.2 V
1220
1400
ns
(1) 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.
(2) 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) x C_I+ 800 ns where n = ADC resolution = 12, R_S = external source resistance.
5.31 12-Bit ADC, Linearity Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
E_I
Integral linearity
error
1.4 V ≤ (Ve_REF+ – V_REF–/Ve_REF–) min ≤ 1.6 V
1.6 V < (Ve_REF+ – V_REF–/Ve_REF–) min ≤ [V_AVCC]
E_D
Differential linearity (Ve_REF+ – V_REF–/Ve_REF–) min ≤ (Ve_REF+ – V_REF–/Ve_REF–),
error
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_O
Offset error
(Ve_REF+ – V_REF–/Ve_REF–) min ≤ (Ve_REF+ – V_REF–/Ve_REF–),
Internal impedance of source RS < 100 Ω,
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_G
Gain error
(Ve_REF+ – V_REF–/Ve_REF–)min ≤ (Ve_REF+ – V_REF–/Ve_REF–),
C_VREF+ = 10 µF (tantalum) and 100 nF (ceramic)
E_T
Total unadjusted
error
(Ve_REF+ -– V_REF–/Ve_REF– )min ≤ (Ve_REF+ –V_REF–/Ve_REF–),
CVREF+ = 10 µF (tantalum) and 100 nF (ceramic)
V_CC
2.2 V, 3 V
MIN TYP
2.2 V, 3 V
2.2 V, 3 V
±2
2.2 V, 3 V
±1.1
2.2 V, 3 V
±2
MAX
±2
±1.7
UNIT
LSB
±1 LSB
±4 LSB
±2 LSB
±5 LSB
Copyright © 2006–2015, Texas Instruments Incorporated
Specifications
37
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