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CC430F5135IRGZ Datasheet(PDF) 67 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
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CC430F5135IRGZ Datasheet(HTML) 67 Page - Texas Instruments

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ECCN 5E002 TSPA - Technology / Software Publicly Available
CC430F613x
CC430F612x
CC430F513x
www.ti.com
SLAS554D – MAY 2009 – REVISED JULY 2010
REF, External Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
(1)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
VeREF+
Positive external reference voltage input
VeREF+ > VREF–/VeREF–
(2)
1.4
AVCC
V
VREF–/VeREF–
Negative external reference voltage input
VeREF+ > VREF–/VeREF–
(3)
0
1.2
V
(VeREF+
Differential external reference voltage
VeREF+ > VREF–/VeREF–
(4)
1.4
AVCC
V
VREF–/VeREF–)
input
1.4 V
≤ VeREF+ ≤ VAVCC ,
VeREF– = 0 V
fADC12CLK = 5
2.2 V/3 V
±8.5
±26
µA
MHz,ADC12SHTx = 1h,
Conversion rate 200ksps
IVeREF+
Static input current
IVREF–/VeREF–
1.4 V
≤ VeREF+ ≤ VAVCC ,
VeREF– = 0 V
fADC12CLK = 5
2.2 V/3 V
±1
µA
MHz,ADC12SHTx = 8h,
Conversion rate 20ksps
CVREF+/-
Capacitance at VREF+/- terminal
(5)10
µF
(1)
The external reference is used during ADC conversion to charge and discharge the capacitance array. The input capacitance, Ci, is also
the dynamic load for an external reference during conversion. The dynamic impedance of the reference supply should follow the
recommendations on analog-source impedance to allow the charge to settle for 12-bit accuracy.
(2)
The accuracy limits the minimum positive external reference voltage. Lower reference voltage levels may be applied with reduced
accuracy requirements.
(3)
The accuracy limits the maximum negative external reference voltage. Higher reference voltage levels may be applied with reduced
accuracy requirements.
(4)
The accuracy limits minimum external differential reference voltage. Lower differential reference voltage levels may be applied with
reduced accuracy requirements.
(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. See also the CC430 Family User's Guide (SLAU259).
Copyright © 2009–2010, Texas Instruments Incorporated
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