CC2640 datasheet(19/51 Pages) TI

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CC2640

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SWRS176 – FEBRUARY 2015

5.14

ADC Characteristics

(1)

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

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Input voltage range

VDDS

Resolution

Bits

Sample rate

200

ksps

Offset

Internal 4.3 V equivalent reference(2)

LSB

Gain error

Internal 4.3 V equivalent reference(2)

2.4

LSB

DNL(3) Differential nonlinearity

>–1

LSB

INL(4)

Integral nonlinearity

±3

LSB

Internal 4.3 V equivalent reference(2), 200 ksps, 9.6 kHz input tone

9.8

VDDS as reference, 200 ksps, 9.6 kHz input tone

ENOB

Effective number of bits

Bits

Internal 1.44 V reference, voltage scaling disabled, 32 samples

11.1

average, 200 ksps, 300 Hz input tone

Internal 4.3 V equivalent reference(2), 200 ksps, 9.6 kHz input tone

–65

VDDS as reference, 200 ksps, 9.6 kHz input tone

–69

THD

Total harmonic distortion

Internal 1.44 V reference, voltage scaling disabled, 32 samples

–71

average, 200 ksps, 300 Hz input tone

Internal 4.3 V equivalent reference(2), 200 ksps, 9.6 kHz input tone

SINA

Signal-to-noise and

VDDS as reference, 200 ksps, 9.6 kHz input tone

D /

distortion ratio

Internal 1.44 V reference, voltage scaling disabled, 32 samples

SNDR

average, 200 ksps, 300 Hz input tone

Internal 4.3 V equivalent reference(2), 200 ksps, 9.6 kHz input tone

Spurious-free dynamic

VDDS as reference, 200 ksps, 9.6 kHz input tone

SFDR

range

Internal 1.44 V reference, voltage scaling disabled, 32 samples

average, 200 ksps, 300 Hz input tone

Serial conversion, time-to-output, 24 MHz clock

clock-

Conversion time

cycles

Current consumption

Internal 4.3 V equivalent reference(2)

0.66

Current consumption

VDDS as reference

0.75

Internal reference voltage

Internal 4.3 V equivalent reference(2)

1.44

Internal reference voltage

VDDS as reference

VDDS /

2.82

(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 4.3V

(3)

No missing codes. Positive DNL typically varies from +0.3 to +3.5 depending on device, see Figure 5-13

(4)

For a typical example, see Figure 5-14

5.15

Temperature Sensor

Measured on Texas Instruments CC2650EM-5XD reference design with Tc=25°C, VDDS = 3.0 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

°C

Range

–40

°C

Accuracy

±5

°C

Supply voltage coefficient(1)

3.2

°C/V

(1)

Automatically compensated when using supplied driver libraries.

5.16

Battery Monitor

Measured on Texas Instruments CC2650EM-5XD reference design with Tc=25°C, VDDS = 3.0 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

Range

1.8

3.8

Specifications

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