Zetex ZRC500A01, ZRC500A02, ZRC500A03, ZRC500F01, ZRC500F02 Datasheet

DEVICE DESCRIPTION

The ZRC500 uses a bandgap circuit design to

achieve a precision micropower voltage

reference of 5.0 volts. The device is available

in small outline surface mount packages,

ideal for applications where space saving is

important, as well as packages for through

hole requirements.

The ZRC500 design provides a stable voltage

without an external capacitor and is stable

with capacitive loads. The ZRC500 is

recommended for operation between 25µA

and 5mA and so is ideally suited to low

power and battery powered applications.

Excellent performance is maintained to an

absolute maximum of 25mA, however the

rugged design and 20 volt processing allows

the reference to withstand transient effects

and currents up to 200mA. Superior

switching capability allows the device to

reach stable operating conditions in only a

few microseconds.

FEATURES

•

Small outline SOT23, SO8 and TO92

style packages

•

No stabilising capacitor required

•

Low knee current, 19µA typical

•

Typical T

C

30ppm/°C

•

Typical slope resistance 0.4Ω

•

± 3%, 2% and 1% tolerance

•

Industrial temperature range

•

Operating current 25µA to 5mA

•

Transient response, stable in less than

10µs

•

Optional extended current range

APPLICATIONS

•

Battery powered and portable

equipment.

•

Instrumentation.

•

Test equipment.

•

Metering and measurement systems.

V

R

G

nd

PRECISION 5.0 VOLT LOW KNEE CURRENT

VOLTAGE REFERENCE

ISSUE 3 - MARCH 1998

ZRC500

SCHEMATIC DIAGRAM

4-262

ABSOLUTE MAXIMUM RATING

Reverse Current 25mA

Forward Current 25mA

Operating Temperature -40 to 85°C

Storage Temperature -55 to 125°C

Power Dissipation (T

amb

=25°C)

SOT23 330mW

E-Line, 3 pin (TO92) 500mW

E-Line, 2 pin (TO92) 500mW

SO8 625mW

ELECTRICAL CHARACTERISTICS

TEST CONDITIONS (Unless otherwise stated) T

amb

=25°C

SYMBOL PARAMETER

CONDITIONS LIMITS TOL.

%

UNITS

MIN TYP MAX

V

R

Reverse Breakdown Voltage

I

R

=150µA

4.95

4.9

4.85

5.0

5.0

5.0

5.05

5.1

5.15

1

2

3

V

I

MIN

Minimum Operating Current 19 25

µA

I

R

Recommended Operating

Current

0.025 5 mA

T

C

† Average Reverse Breakdown

Voltage Temp. Co. I

R(min)

to

I

R(max)

30 90 ppm/°C

R

S

§ Slope Resistance 0.4 2

Ω

Z

R

Reverse Dynamic Impedance I

R

=1mA

f = 100Hz

I

AC

=0.1 I

R

0.3 0.8

Ω

E

N

Wideband Noise Voltage

I

R

=150µA

f = 10Hz to

10kHz

105

µV(rms)

ZRC500

Reverse Current (uA)

0

20

40

60

Reverse Characteristics

0

Reverse Voltage (V)

26

85 °C

25 °C

-40 °C

4

†

T

C

=

(

V

R

(

max

)

−

V

R

(

min

)

)

x

1000000

V

R

x

(

T

(

max

)

−

T

(

min

)

)

Note: V

R(max)

- V

R(min)

is the maximum

deviation in reference voltage measured

over the full operating temperature

range.

§

R

S

=

V

R

Change

(

I

R

(

min

)

to

I

R

(

max

)

)

I

R

(

max

)

−

I

R

(

min

)

4-263