ZXRE125DFTA Datasheet ZXRE125FFTA, ZXRE125EFTA, ZXRE125DFTA | P1-P3

ZXRE125

Document number: DS32170 Rev. 8 - 2

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SOT23 MICROPOWER 1.22V VOLTAGE REFERENCE

Description

The ZXRE125 is a bandgap circuit designed to achieve a

precision micropower voltage reference of 1.22 volts. The

device is available in the small outline SOT23 surface mount

package which is ideal for applications where space saving

is important.

SOT23 tolerance is available to 0.5% for precision

applications. Excellent performance is maintained over the

8µA to 20mA operating current range with a typical

temperature coefficient of only 20ppm/°C. The device has

been designed to be highly tolerant of capacitive loads so

maintaining excellent stability.

This device offers a SOT23 pin for pin compatible

replacement of the ZRA124 and ZRA125 series of voltage

references.

Features

• High performance 1.220V reference

• Small outline SOT23

• 4μA knee current

• 20ppm/°C typical temperature coefficient

• Unconditionally stable

• 0.5%, 1%, 2%, and 3% tolerance

• Green molding compound (No Br, Sb)

Applications

• Battery powered equipment

• Precision power supplies

• Portable instrumentation

• Portable communication devices

• Data acquisition systems

Application Circuit

Pin Assignments

(Top View)

Pin 1 floating or connected to pin 2

(Bottom View)

Pin 3 floating or connected to pin 1

Schematic Diagram

OBSOLETE

ZXRE125

Document number: DS32170 Rev. 8 - 2

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Absolute Maximum Ratings (Voltages to GND Unless Otherwise Stated)

Paramete

r

Symbol Rating Unit

Reverse Current V

Z

30 mA

Forward Current 10 mA

Operating Temperature T

OMP

-40 to 85 °C

Storage Temperature T

STG

-55 to 125 °C

Power Dissipation (T

AMB

= 25°C)

P

D

330 mW

Electrical Characteristics (Test conditions: T

amb

= 25°C, unless otherwise specified.)

Symbol Parameter Condition Min. Typ. Max. Tol. (%) Unit

V

R

Reverse breakdown voltage

I

R

= 100µA

1.214

1.208

1.196

1.183

1.220

1.226

1.232

1.244

1.257

C/0.5

(1)

D/1

E/2

F/3

V

I

MIN

Minimum operating current 4 8

µA

I

R

Recommended operating current 0.008 20

mA

T

C

(*)

Average reverse breakdown

voltage temperature coefficient

I

R(min)

to I

R(max)

20 75

ppm/°C

ΔV

R

ΔI

R

Reverse Breakdown Change

with Current Voltage

I

R

= 30μA to 1mA

I

R

= 1mA to 12mA

1

10

mV

Z

R

Reverse dynamic impedance

I

R

= 1mA

f = 100Hz

I

AC

= 0.1I

R

0.2 0.6

Ω

E

N

Wideband noise voltage

I

R

= 8µA to 100µA

f = 10Hz to 10kHz

60

µV(rms)

Notes:

1.

Note: V

R(MAX)

- V

R(MIN)

is the maximum deviation in reference

voltage measured over the full operating temperature range.

(*)

T

C

=

(V

R

(

MAX

)

– V

R

(

MIN

)

) x 1000000

V

R

x (T

(

MAX

)

– T

(

MIN

)

ZXRE125

Document number: DS32170 Rev. 8 - 2

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Typical Characteristics

ZXRE125DFTA

ZXRE125DFTA

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