www.clare.com
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
Input Characteristics @ 25°C
LED forward voltage
Reference voltage
Conditions
Symbol
Min
Typ
Max
Units
I
LED
= 5 mA, V
COMP
= V
FB
(Fig.1)
I
LED
= 10 mA, V
COMP
= V
FB
(Fig.1)
T
A
T = -40 to +85°C
T
A
T = 25°C
T
A
T = -40 to +85°C
V
F
0.8
1.2
1.4
V
V
REF
1.210
1.228
-
-
1.265
1.252
-
V
1.24
32
Deviation of V
REF
over temperature -
See Note 1
Transfer Characteristics @ 25°C
Current Transfer Ratio in Feedback (I
Current transfer ratio (I
Current Transfer Ratio Matching (I
Feedback input current
Deviation of I
REF
over temperature -
See Note 1
Minimum drive current
Off-state error amplifier current
Error amplifier output impedance -
See Note 2
Output Characteristics @ 25°C
Cathode dark current
Cathode-Anode voltage breakdown
Isolation Characteristics @ 25°C
Withstand insulation voltage
Resistance (input to output)
AC Characteristics @ 25°C
Bandwidth (LED) -
See Note 4
Common mode rejection ratio -
See Note 5
Linearity
V
REF (DEV)
mV
REF LED
)
I
LED
= 5mA, V
REF
= 0.5V
(Fig.2)
I
LED
= 5 mA, V
COMP
= V
FB
, V
KA
= 5 V
(Fig. 4)
I
LED
= 5mA, V
KA
= 5.0V
I
LED
= 10 mA, R1 = 10 k
(Fig.2)
T
A
T = -40 to +85°C
V
COMP
= V
FB
(Fig.1)
V
IN
= 6 V, V
FB
= 0
(Fig.3)
I
LED
= 0.1 mA to 15 mA, V
COMP
= V
FB
, f<1 kHz
(Fig.1)
K
1
K
2
K
3
I
REF
1.0
1.0
85
-
-
1
-
-
2
2
3.0
3.0
115
-
-
-
0.1
-
%
%
%
μA
μA
mA
μA
Ohm
KA LED
)
KA REF
)
100
226
110
-
0.001
0.21
I
REF (DEV)
I
LED (MIN)
I
OFF
IZ
OUT
I
V
IN
= Open, V
KA
= 10V
(Fig. 3)
I
KA
= 1μA
I
KAO
BV
KA
-
0.3
-
100
-
nA
V
20
RH
≤
50%, T = 25°C, t = 1 min
(Note 3)
V
I-O
= 500 V
DC
(Note 3)
V
ISO
R
I-O
3750
-
-
-
-
V
rms
10
12
B
W
-
-
-
100
70
70
-
-
-
kHz
dB
dB
I
LED
= 1.0 mA,R
L
= 100 k
, f = 100 Hz
(Fig. 5)
I
LED
= 5 mA, 100 mV
PP
CMRR
THD
1. The deviation parameters V
and I
REF(DEV)
are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature
coefficient of the reference input voltage,
REF
, is defined as:
|
V
REF
| (ppm/°C) = {V
REF (DEV)
/V
REF
(T 25°C)} X 10
6
/
T
A
T
where
T
A
T is the rated operating free-air temperature range of the device.
2. The dynamic impedance is defined as |Z
OUT
| =
V
COMP
/
I
LED
1
R
1
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
Photodiode Cathode-Anode Voltage
Photodiode Anode-Cathode Voltage
Input Voltage
Input DC Current
Total Power Dissipation
(note 1)
Operating Temperature
Storage Temperature
Symbol
V
KAO
AKO
V
V
LED
I
LED
P
D
T
T
Ratings
20
0.5
9
20
145
-40 to +85
-40 to +125
Units
V
V
V
mA
mW
°C
°C
Absolute Maximum Ratings (@ 25 C)
1
Derate linearly from 25°C at a rate of 2.42 mW/ °C.
, for the application circuit in Figure 6, |Zout| = K