Zetex (Now Diodes) ZRC500A01, ZRC500A02, ZRC500A03, ZRC500F01, ZRC500F02, ZRC500F03, ZRC500N01, ZRC500N02, ZRC500N03, ZRC500R01, ZRC500R02, ZRC500R03, ZRC500Y01, ZRC500Y02, ZRC500Y03 Schematic [ru]

Loading...

PRECISION 5.0 VOLT LOW KNEE CURRENT

ZRC500

VOLTAGE REFERENCE

 

ISSUE 3 - MARCH 1998

 

 

 

 

 

 

 

DEVICE DESCRIPTION

FEATURES

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.

Small outline SOT23, SO8 and TO92 style packages

No stabilising capacitor required

Low knee current, 19μA typical

Typical TC 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.

SCHEMATIC DIAGRAM

V

R

Gnd

4-262

IR (max) IR (min)

ABSOLUTE MAXIMUM RATING

Reverse Current

25mA

Forward Current

25mA

Operating Temperature

-40 to 85°C

Storage Temperature

-55 to 125°C

ZRC500

Power Dissipation (Tamb=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) Tamb=25°C

SYMBOL

PARAMETER

CONDITIONS

 

LIMITS

 

TOL.

UNITS

 

 

 

 

 

 

 

 

 

%

 

 

 

 

 

MIN

 

TYP

 

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VR

 

Reverse Breakdown Voltage

IR=150μA

4.95

 

5.0

 

5.05

1

V

 

 

 

 

4.9

 

5.0

 

5.1

2

 

 

 

 

 

4.85

 

5.0

 

5.15

3

 

 

 

 

 

 

 

 

 

 

 

IMIN

Minimum Operating Current

 

 

 

19

 

25

 

μA

IR

 

Recommended Operating

 

0.025

 

 

 

5

 

mA

 

 

Current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC

Average Reverse Breakdown

 

 

 

30

 

90

 

ppm/°C

 

 

Voltage Temp. Co.

IR(min) to

 

 

 

 

 

 

 

RS

§

Slope Resistance

IR(max)

 

 

0.4

 

2

 

Ω

 

 

 

 

 

ZR

 

Reverse Dynamic Impedance

IR = 1mA

 

 

0.3

 

0.8

 

Ω

 

 

 

f = 100Hz

 

 

 

 

 

 

 

 

 

 

IAC=0.1 IR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

 

Wideband Noise Voltage

IR = 150μA

 

 

105

 

 

 

μV(rms)

 

 

 

f = 10Hz to

 

 

 

 

 

 

 

 

 

 

10kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TC =

(VR(max)VR(min)) x 1000000

VR x (T(max)T(min))

 

Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range.

§ RS = VR Change(IR (min) to IR (max))

 

60

 

 

 

 

40

 

 

 

(uA)

 

 

 

 

Current

20

 

 

 

 

 

25 °C

 

Reverse

 

85 °C

 

 

 

 

 

-40 °C

0

 

 

 

 

 

 

 

 

0

2

4

6

Reverse Voltage (V)

Reverse Characteristics

4-263

+ 4 hidden pages