CC2652R datasheet(25/58 Pages) TI

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7.15.2 DAC

7.15.2.1 Digital-to-Analog Converter (DAC) Characteristics

Tc = 25 °C, VDDS = 3.0 V, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

General Parameters

Resolution

Bits

VDDS

Supply voltage

Any load, any VREF, pre-charge OFF, DAC charge-pump ON

1.8

3.8

External Load(4), any VREF, pre-charge OFF, DAC charge-pump

OFF

2.0

3.8

Any load, VREF = DCOUPL, pre-charge ON

2.6

3.8

FDAC

Clock frequency

Buffer ON (recommended for external load)

250

kHz

Buffer OFF (internal load)

1000

Voltage output settling time

VREF = VDDS, buffer OFF, internal load

1 / FDAC

VREF = VDDS, buffer ON, external capacitive load = 20 pF(3)

13.8

External capacitive load

200

External resistive load

MΩ

Short circuit current

400

µA

ZMAX

Max output impedance Vref =

VDDS, buffer ON, CLK 250

kHz

VDDS = 3.8 V, DAC charge-pump OFF

50.8

kΩ

VDDS = 3.0 V, DAC charge-pump ON

51.7

VDDS = 3.0 V, DAC charge-pump OFF

53.2

VDDS = 2.0 V, DAC charge-pump ON

48.7

VDDS = 2.0 V, DAC charge-pump OFF

70.2

VDDS = 1.8 V, DAC charge-pump ON

46.3

VDDS = 1.8 V, DAC charge-pump OFF

88.9

Internal Load - Continuous Time Comparator / Low Power Clocked Comparator

DNL

Differential nonlinearity

VREF = VDDS,

load = Continuous Time Comparator or Low Power Clocked

Comparator

FDAC = 250 kHz

±1

LSB(1)

Differential nonlinearity

VREF = VDDS,

load = Continuous Time Comparator or Low Power Clocked

Comparator

FDAC = 16 kHz

±1.2

Offset error(2)

Load = Continuous Time

Comparator

VREF = VDDS = 3.8 V

±0.64

LSB(1)

VREF = VDDS= 3.0 V

±0.81

VREF = VDDS = 1.8 V

±1.27

VREF = DCOUPL, pre-charge ON

±3.43

VREF = DCOUPL, pre-charge OFF

±2.88

VREF = ADCREF

±2.37

Offset error(2)

Load = Low Power Clocked

Comparator

VREF = VDDS= 3.8 V

±0.78

LSB(1)

VREF = VDDS = 3.0 V

±0.77

VREF = VDDS= 1.8 V

±3.46

VREF = DCOUPL, pre-charge ON

±3.44

VREF = DCOUPL, pre-charge OFF

±4.70

VREF = ADCREF

±4.11

Max code output voltage

variation(2)

Load = Continuous Time

Comparator

VREF = VDDS = 3.8 V

±1.53

LSB(1)

VREF = VDDS = 3.0 V

±1.71

VREF = VDDS= 1.8 V

±2.10

VREF = DCOUPL, pre-charge ON

±6.00

VREF = DCOUPL, pre-charge OFF

±3.85

VREF = ADCREF

±5.84

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CC2652R7

SWRS253 – MAY 2021

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