REF2125 datasheet(5/24 Pages) TI1

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REF2125

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SBAS798 – SEPTEMBER 2017

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(1)

Temperature drift is specified according to the box method. See Feature Description for more details.

(2)

Dropout voltage under test condition is 100mV.

(3)

In clean start section it is referred as IPEAK.

(4)

The peak-to-peak noise measurement procedure is explained in more detail in Noise Performance.

(5)

Long-term stability measurement procedure is explained in more in detail in Long-Term Stability.

(6)

The thermal hysteresis measurement procedure is explained in more detail in Thermal Hysteresis.

6.5 Electrical Characteristics

At TA = 25°C unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ACCURACY AND DRIFT

Output voltage

accuracy

–40°C

≤ TA ≤ 125°C

–0.05%

0.05%

Output voltage

temperature

coefficient(1)

2.5

ppm/°C

LINE AND LOAD REGULATION

ΔV(OΔVIN)

Line regulation

VIN = 2.55 V to 12 V , TA = 25°C

ppm/V

VIN = VREF + VDO

(2) to 12 V, −40°C ≤ T

A ≤

125°C

ΔV(OΔIL)

Load regulation

IL = 0 mA to 10 mA, VIN = 3 V,

TA = 25°C

Sourcing

ppm/mA

IL = 0 mA to 10 mA, VIN = 3 V,

−40°C ≤ TA ≤ 125°C

Sourcing

IL = 0 mA to –10 mA, VIN =

VREF+ VDO

(2), T

A = 25°C

Sinking

IL = 0 mA to –10 mA, VIN =

VREF+ VDO

(2), −40°C ≤ T

A ≤

125°C

Sinking

ISC

Short-circuit current(3)

VREF = 0, CCS = No connect, TA = 25°C

RCS = 500kΩ, TA = 25°C

CCS = GND, TA = 25°C

0.5

NOISE

en p-p

Output voltage

noise(4)

ƒ = 0.1 Hz to 10 Hz

μV p-p/V

ƒ = 10 Hz to 10 kHz

μV rms

Output voltage noise

density

ƒ = 1 kHz

0.25

ppm/

√Hz

HYSTERESIS AND LONG TERM STABILITY

Long-term stability(5)

1000 hours

ppm

Output voltage

hysteresis(6)

TA = 25°C to −40°C to 125°C to 25°C, Cycle 1

ppm

TA = 25°C to −40°C to 125°C to 25°C, Cycle 2

TURNON

tON

Turnon time

0.1% of output voltage settling, CL = 10 µF,

REF2125

2.5

CAPACITIVE LOAD

Stable output

capacitor value

−40°C ≤ TA ≤ 125°C

0.1

µF

OUTPUT VOLTAGE

VREF

Output voltage

REF2125

2.5

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