CC1352R datasheet(32/79 Pages) TI2

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8.21.1.1 Analog-to-Digital Converter (ADC) Characteristics (continued)

Tc = 25 °C, VDDS = 3.0 V and voltage scaling enabled, unless otherwise noted.(1)

Performance numbers require use of offset and gain adjustements in software by TI-provided ADC drivers.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Reference voltage

Equivalent fixed internal reference (input voltage

scaling enabled). For best accuracy, the ADC

conversion should be initiated through the TI-RTOS API

in order to include the gain/offset compensation factors

stored in FCFG1

4.3(2) (3)

Reference voltage

Fixed internal reference (input voltage scaling

disabled). For best accuracy, the ADC conversion

should be initiated through the TI-RTOS API in order to

include the gain/offset compensation factors stored in

FCFG1. This value is derived from the scaled value

(4.3 V) as follows:

Vref = 4.3 V × 1408 / 4095

1.48

Reference voltage

VDDS as reference, input voltage scaling enabled

VDDS

Reference voltage

VDDS as reference, input voltage scaling disabled

VDDS /

2.82(3)

Input impedance

200 kSamples/s, voltage scaling enabled. Capacitive

input, Input impedance depends on sampling frequency

and sampling time

MΩ

(1)

Using IEEE Std 1241-2010 for terminology and test methods

(2)

Input signal scaled down internally before conversion, as if voltage range was 0 to 4.3 V

(3)

Applied voltage must be within Absolute Maximum Ratings (see Section 8.1) at all times

(4)

No missing codes

(5)

ADC_output = Σ(4n samples ) >> n, n = desired extra bits

CC1312R

SWRS210H – JANUARY 2018 – REVISED NOVEMBER 2020

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