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CC430F5133 Datasheet, PDF (65/121 Pages) Texas Instruments – MSP430™ SoC with RF Core
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ECCN 5E002 TSPA - Technology / Software Publicly Available
CC430F613x
CC430F612x
CC430F513x
SLAS554F – MAY 2009 – REVISED DECEMBER 2011
12-Bit ADC, Power Supply and Input Range Conditions
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)(1)
AVCC
V(Ax)
IADC12_A
PARAMETER
Analog supply voltage
Full performance
Analog input voltage range(2)
Operating supply current into
AVCC terminal(3)
TEST CONDITIONS
AVCC and DVCC are connected together,
AVSS and DVSS are connected together,
V(AVSS) = V(DVSS) = 0 V
All ADC12 analog input pins Ax
fADC12CLK = 5.0 MHz, ADC12ON = 1,
REFON = 0, SHT0 = 0, SHT1 = 0,
ADC12DIV = 0
VCC
2.2 V
3V
MIN TYP MAX UNIT
2.2
3.6 V
0
AVCC V
125 155
µA
150 220
CI
Input capacitance
Only one terminal Ax can be selected at one
time
2.2 V
20
25 pF
RI
Input MUX ON resistance
0 V ≤ VAx ≤ AVCC
10 200 1900 Ω
(1) The leakage current is specified by the digital I/O input leakage.
(2) The analog input voltage range must be within the selected reference voltage range VR+ to VR– for valid conversion results. If the
reference voltage is supplied by an external source or if the internal reference voltage is used and REFOUT = 1, then decoupling
capacitors are required. See REF, External Reference and REF, Built-In Reference.
(3) The internal reference supply current is not included in current consumption parameter IADC12_A.
12-Bit ADC, Timing Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN TYP
For specified performance of ADC12 linearity
parameters using an external reference voltage or
AVCC as reference.(1)
0.45 4.8
fADC12CLK ADC conversion clock
For specified performance of ADC12 linearity
parameters using the internal reference.(2)
2.2 V/3 V
0.45
2.4
For specified performance of ADC12 linearity
parameters using the internal reference.(3)
0.45 2.4
fADC12OSC
Internal ADC12
oscillator (4)
ADC12DIV = 0, fADC12CLK = fADC12OSC
2.2 V/3 V
4.2 4.8
tCONVERT Conversion time
REFON = 0, Internal oscillator,
fADC12OSC = 4.2 MHz to 5.4 MHz
2.2 V/3 V
2.4
External fADC12CLK from ACLK, MCLK or SMCLK,
(5)
ADC12SSEL ≠ 0
tSample
Sampling time
RS = 400 Ω, RI = 1000 Ω, CI = 30 pF,
τ = [RS + RI] × CI (6)
2.2 V/3 V 1000
MAX UNIT
5.0
4.0 MHz
2.7
5.4 MHz
3.1
µs
ns
(1) REFOUT = 0, external reference voltage: SREF2 = 0, SREF1 = 1, SREF0 = 0. AVCC as reference voltage: SREF2 = 0, SREF1 = 0,
SREF0 = 0. The specified performance of the ADC12 linearity is ensured when using the ADC12OSC. For other clock sources, the
specified performance of the ADC12 linearity is ensured with fADC12CLK maximum of 5.0 MHz.
(2) SREF2 = 0, SREF1 = 1, SREF0 = 0, ADC12SR = 0, REFOUT = 1
(3) SREF2 = 0, SREF1 = 1, SREF0 = 0, ADC12SR = 0, REFOUT = 0. The specified performance of the ADC12 linearity is ensured when
using the ADC12OSC divided by 2.
(4) The ADC12OSC is sourced directly from MODOSC inside the UCS.
(5) 13 × ADC12DIV × 1/fADC12CLK
(6) Approximately ten Tau (τ) are needed to get an error of less than ±0.5 LSB:
tSample = ln(2n+1) x (RS + RI) × CI + 800 ns, where n = ADC resolution = 12, RS = external source resistance
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