Zetex ZRC400A01, ZRC400A02, ZRC400A03, ZRC400F01, ZRC400F02 Datasheet

PRECISION 4.096 VOLT LOW KNEE CURRENT	ZRC400
VOLTAGE REFERENCE
ISSUE 3 - MARCH 1998

DEVICE DESCRIPTION

The ZRC400 uses a bandgap circuit design to achieve a precision micropower voltage reference of 4.096 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 ZRC400 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC400 is recommended for operation between 23μA 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, 18μA typical

∙Typical TC 30ppm/°C

∙Typical slope resistance 0.4Ω

∙± 3%, 2% and 1% tolerance

∙Industrial temperature range

∙Operating current 23μA 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

4-257

IR (max) − IR (min)

ZRC400

ABSOLUTE MAXIMUM RATING

Reverse Current	25mA	Power Dissipation (Tamb=25°C)
Forward Current	25mA	SOT23	330mW
Operating Temperature	-40 to 85°C	E-Line, 3 pin (TO92)	500mW
Storage Temperature	-55 to 125°C	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	4.055	4.096	4.137	1	V
			4.014	4.096	4.178	2
			3.973	4.096	4.219	3
IMIN	Minimum Operating Current			18	23		μA
IR	Recommended Operating		0.023		5		mA
	Current
TC †	Average Reverse Breakdown			30	90		ppm/°C
	Voltage Temp. Co.	IR(min) to
		IR(max)
RS §	Slope Resistance			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		90			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))

	40
(uA)	30
Current	20
Reverse			25 °C
	10	85 °C
					-40 °C
	0
	0	1	2	3	4	5

Reverse Voltage (V)

Reverse Characteristics

4-258