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CC430F5135IRGZ Datasheet(PDF) 68 Page - Texas Instruments

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Part No. CC430F5135IRGZ
Description  MSP430 SoC with RF Core
Download  118 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

CC430F5135IRGZ Datasheet(HTML) 68 Page - Texas Instruments

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ECCN 5E002 TSPA - Technology / Software Publicly Available
CC430F613x
CC430F612x
CC430F513x
SLAS554D – MAY 2009 – REVISED JULY 2010
www.ti.com
REF, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
REFVSEL = 2 for 2.5 V
REFON = REFOUT = 1
3 V
2.41
±1.5%
IVREF+= 0 A
REFVSEL = 1 for 2.0 V
Positive built-in reference
VREF+
REFON = REFOUT = 1
3 V
1.93
±1.5%
V
voltage output
IVREF+= 0 A
REFVSEL = 0 for 1.5 V
REFON = REFOUT = 1
2.2 V/ 3 V
1.45
±1.5%
IVREF+= 0 A
REFVSEL = 0 for 1.5 V, reduced performance
1.8
AVCC minimum voltage,
REFVSEL = 0 for 1.5 V
2.2
AVCC(min)
Positive built-in reference
V
REFVSEL = 1 for 2.0 V
2.3
active
REFVSEL = 2 for 2.5 V
2.8
REFON = 1, REFOUT = 0, REFBURST = 0
3 V
100
140
µA
Operating supply current into
IREF+
AVCC terminal
(2) (3)
REFON = 1, REFOUT = 1, REFBURST = 0
3 V
0.9
1.5
mA
REFVSEL = 0, 1, 2
Load-current regulation,
IVREF+ = +10 µA/–1000 µA
IL(VREF+)
2500 µV/mA
VREF+ terminal
(4)
AVCC = AVCC (min) for each reference level.
REFVSEL = 0, 1, 2; REFON = REFOUT = 1
Capacitance at VREF+/-
CVREF+/-
REFON = REFOUT = 1(5)
20
100
pF
terminals
IVREF+ = 0 A
Temperature coefficient of
ppm/
TCREF+
REFVSEL = 0, 1, 2;
30
50
built-in reference(6)
°C
REFON = 1, REFOUT = 0 or 1
AVCC = AVCC (min) - AVCC(max)
Power supply rejection ratio
TA = 25 °C
PSRR_DC
120
300
µV/V
(DC)
REFVSEL = 0, 1, 2;
REFON = 1, REFOUT = 0 or 1
AVCC = AVCC (min) - AVCC(max)
TA = 25 °C
Power supply rejection ratio
PSRR_AC
f = 1 kHz,
ΔVpp = 100 mV
6.4
mV/V
(AC)
REFVSEL = 0, 1, 2;
REFON = 1, REFOUT = 0 or 1
AVCC = AVCC (min) - AVCC(max)
REFVSEL = 0, 1, 2;
75
REFOUT = 0, REFON = 0
→ 1
Settling time of reference
tSETTLE
µs
AVCC = AVCC (min) - AVCC(max)
voltage(7)
CVREF = CVREF(max)
75
REFVSEL = 0, 1, 2;
REFOUT = 1, REFON = 0
→ 1
(1)
The reference is supplied to the ADC by the REF module and is buffered locally inside the ADC. The ADC uses two internal buffers, one
smaller and one larger for driving the VREF+ terminal. When REFOUT = 1, the reference is available at the VREF+ terminal, as well as,
used as the reference for the conversion and utilizes the larger buffer. When REFOUT = 0, the reference is only used as the reference
for the conversion and utilizes the smaller buffer.
(2)
The internal reference current is supplied via terminal AVCC. Consumption is independent of the ADC12ON control bit, unless a
conversion is active. The REFON bit enables to settle the built-in reference before starting an A/D conversion. REFOUT = 0 represents
the current contribution of the smaller buffer. REFOUT = 1 represents the current contribution of the larger buffer without external load.
(3)
The temperature sensor is provided by the REF module. Its current is supplied via terminal AVCC and is equivalent to IREF+ with REFON
=1 and REFOUT = 0.
(4)
Contribution only due to the reference and buffer including package. This does not include resistance due to PCB trace, etc.
(5)
Two decoupling capacitors, 10µF and 100nF, should be connected to VREF to decouple the dynamic current required for an external
reference source if it is used for the ADC12_A.
(6)
Calculated using the box method: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C)/(85°C – (–40°C)).
(7)
The condition is that the error in a conversion started after tREFON is less than ±0.5 LSB. The settling time depends on the external
capacitive load when REFOUT = 1.
68
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