REF3425 datasheet(5/28 Pages) TI1

5 / 28 page

REF3425-Q1, REF3430-Q1, REF3433-Q1, REF3440-Q1, REF3450-Q1

www.ti.com

SBAS901 – JULY 2018

Product Folder Links: REF3425-Q1 REF3430-Q1 REF3433-Q1 REF3440-Q1 REF3450-Q1

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(1)

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

(2)

The dropout voltage in line regulation test condition is 50 mV.

(3)

The dropout voltage in test condition is 500 mV.

(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.

7.5 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

–0.0

0.05%

Output voltage

temperature

coefficient(1)

2.5

6 ppm/°C

LINE AND LOAD REGULATION

ΔV(OΔVIN)

Line regulation

VIN = 5.05 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/m

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

−40°C ≤ TA ≤ 125°C

Sourcing

IL = 0 mA to –10 mA, VIN = VREF+

VDO

(3), T

A = 25°C

Sinking

REF3425-Q1

REF3430-Q1

REF3433-Q1

REF3440-Q1

REF3450-Q1

IL = 0 mA to –10 mA, VIN = VREF+

VDO

(3), −40°C ≤ T

A ≤ 125°C

Sinking

REF3425-Q1

REF3430-Q1

REF3433-Q1

REF3440-Q1

REF3450-Q1

140

ISC

Short-circuit

current (Output

shorted to

ground)

VREF = 0, TA = 25°C

NOISE

en p-p

Output voltage

noise(4)

ƒ = 0.1 Hz to 10 Hz

μV p-

p/V

ƒ = 0.1 Hz to 10 Hz (REF3440-Q1 and REF3450-Q1)

3.8

μV p-

p/V

ƒ = 10 Hz to 10 kHz

μV rms

Output voltage

noise density

ƒ = 1 kHz

0.25

ppm/

√H

ƒ = 1 kHz (REF3440-Q1 and REF3450-Q1)

0.2

ppm/

√H

HYSTERESIS AND LONG TERM STABILITY

Long-term

stability(5)

0 - 1000 hours at 35°C

ppm

1000 - 2000 hours at 35°C

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

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