Datasheet

22
CC2650
SWRS158B –FEBRUARY 2015–REVISED JULY 2016 www.ti.com
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Specifications Copyright © 2015–2016, Texas Instruments Incorporated
ADC Characteristics (continued)
T
c
= 25°C, V
DDS
= 3.0 V and voltage scaling enabled, unless otherwise noted.
(1)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
(5) Applied voltage must be within absolute maximum ratings (Section 5.1) at all times.
Conversion time Serial conversion, time-to-output, 24-MHz clock 50
clock-
cycles
Current consumption Internal 4.3-V equivalent reference
(2)
0.66 mA
Current consumption VDDS as reference 0.75 mA
Reference voltage
Equivalent fixed internal reference (input voltage scaling
enabled). For best accuracy, the ADC conversion should
be initiated through the TIRTOS API in order to include the
gain/offset compensation factors stored in FCFG1.
4.3
(2)(5)
V
Reference voltage
Fixed internal reference (input voltage scaling disabled).
For best accuracy, the ADC conversion should be initiated
through the TIRTOS API in order to include the gain/offset
compensation factors stored in FCFG1. This value is
derived from the scaled value (4.3V) as follows:
Vref=4.3V*1408/4095
1.48 V
Reference voltage
VDDS as reference (Also known as RELATIVE) (input
voltage scaling enabled)
VDDS V
Reference voltage
VDDS as reference (Also known as RELATIVE) (input
voltage scaling disabled)
VDDS /
2.82
(5)
V
Input Impedance
200 ksps, voltage scaling enabled. Capacitive input, Input
impedance depends on sampling frequency and sampling
time
>1 MΩ