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UM602A
(Rev.:2015)

DUAL OPERATIONAL AMPLIFIER-DUAL COMPARATOR AND ADJUSTABLE VOLTAGE REFERENCE

Unisonic Technologies 

UM602A

LINEAR INTEGRATED CIRCUIT

 VOLTAGE REFERENCE (Cont.)

(TA=25C, unless otherwise specified)

PARAMETER

SYMBOL

CONDITION

MIN TYP MAX UNIT

Reference Input Voltage UM602A-1

(TA=25C) (Figure 1) UM602A-2

VREF

VKA=VREF,IK=10mA

2.490 2.500 2.510 V

2.475 2.500 2.525 V

Reference Input Voltage Deviation Over

Temperature Range (Figure 1, Note 1)

Temperature Coefficient of Reference Input

Voltage (Note 2)

Ratio of Change in Reference Input Voltage to

Change in Cathode to Anode Voltage

(Figure2)

△VREF

VREF

T

VREF

VKA

VKA=VREF,IK=10mA

TMIN ≤ TA ≤ TMAX

VKA=VREF,IK=10mA

TMIN ≤ TA ≤ TMAX

IK=10mA, △VKA=36~3V

7

30 mV

±22 ±100 ppm/C

-1.1 -2 mV/V

Reference Input Current (Figure2)

IREF

IK=10mA,R1

=10kΩR2=∞

TA=25C

TMIN ≤ TA ≤

TMAX

1.5 2.5 μA

3 μA

Reference Input Current Deviation Over

Temperature Range (Figure 2)

△IREF

IK=10mA, R1=10kΩ,

R2=∞, TMIN ≤ TA ≤ TMAX

0.5 1 μA

Minimum Cathode Current for

Regulation-(figure1)

IMIN

VKA=VREF

0.5 1 mA

Off-State Cathode Current (Figure 3)

IOFF

180 500 nA

Notes: 1. △VREF is defined as the difference between the maximum and minimum values obtained over the full

temperature range.

VREF=VREFMAX –VREFMIN

VREFMAX

VREFNIN

T1

T2

Temperature

2. The temperature coefficient is defined as the slopes (positive and negative) of the voltage vs temperature

limits whithin which the reference voltage is guaranteed.

-n pm/c

Max

2.5V

Min

+n pm/c

25°C

3.The dynamic lmpedance is defined as ︱ZKA︱=

VKA

IK

.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

Temperature

5 of 6

QW-R105-030.B

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