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2

LIA120

Rev. 2.0

Absolute Maximum Ratings are stress ratings. Stresses in

excess of these ratings can cause permanent damage to

the device. Functional operation of the device at conditions

beyond those indicated in the operational sections of this

data sheet is not implied.

Parameter

Conditions

Symbol Min

Typ

Max Units

Input Characteristics @ 25°C

LED forward voltage

I

V

F

0.8

1.2

1.4

V

Reference voltage

I

T

A

TT = -40 to +85°C

V

REF

1.210

-

1.265

V

T

A

TT = 25°C

1.228 1.24

1.252

Deviation of V

T

A

TT = -40 to +85°C

V

REF (DEV)

REF (DEV)

-

32

-

mV

Transfer Characteristics @ 25°C

Current Transfer Ratio in Feedback (I

REF

I

K

1

1.0

2

3.0

%

Current transfer ratio (I

KA

I

K

2

1.0

2

3.0

%

Current Transfer Ratio Matching (I

KA

I

K

3

85

100

115

%

Feedback input current

I

I

REF

-

226

-

µA

Deviation of I

T

A

TT = -40 to +85°C

I

REF (DEV)

REF (DEV)

-

110

-

µA

Minimum drive current

V

I

LED (MIN)

LED (MIN)

1

-

-

mA

Off-state error amplifier current

V

I

OFF

-

0.001

0.1

µA

I

IZ

-

0.21

-

Ohm

Output Characteristics @ 25°C

Cathode dark current

V

I

KAO

-

0.3

100

nA

Cathode-Anode voltage breakdown

I

BV

KA

20

-

-

V

Isolation Characteristics @ 25°C

Withstand insulation voltage

RH ≤ 50%, T

A

50%, T

V

ISO

3750

-

-

V

rms

Resistance (input to output)

V

R

I-O

-

-

Ω

AC Characteristics @ 25°C

B

W

-

100

-

kHz

I

CMRR

-

70

-

dB

Linearity

I

THD

-

70

-

dB

1. The deviation parameters V

coefficient of the reference input voltage, ∆V

|∆V

(T

A

TT

where ∆T

A

TT is the rated operating free-air temperature range of the device.

2. The dynamic impedance is defined as |Z

3. Device is considered as a two terminal device: Pins 1, 2, 3 and 4 are shorted together and Pins 5, 6, 7 and 8 are shorted together.

4. See compensation section for calculating bandwidth of LIA120.

5. Common mode transient immunity at output high is the maximum tolerable (positive) dVcm/dt on the leading edge of the common mode impulse signal, Vcm, to assure that the output will remain high.

Common mode transient immunity at output low is the maximum tolerable (negative) dVcm/dt on the trailing edge of the common pulse signal,Vcm, to assure that the output will remain low.

Electrical Characteristics:

Parameter

Symbol Ratings Units

Photodiode Cathode-Anode Voltage

V

KAO

20

V

Photodiode Anode-Cathode Voltage

V

AKO

VV

0.5

V

Input Voltage

V

LED

9

V

Input DC Current

I

LED

20

mA

P

D

145

mW

Operating Temperature

T

-40 to +85

°C

Storage Temperature

T

-40 to +125

°C

Absolute Maximum Ratings (@ 25˚ C)

, for the application circuit in Figure 6, |Zout| = K

, for the application circuit in Figure 6, |Zout| = K