LIA120S Clare, LIA120S Datasheet

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LIA120S

Manufacturer Part Number
LIA120S
Description
Solid State Relays Linear Optocoupler
Manufacturer
Clare
Datasheet

Specifications of LIA120S

Mounting Style
SMD/SMT
Relay Type
Linear Iso Amp
DS-LIA120-R02.0
Features
Applications
Block Diagram
Optocoupler, precision reference and error
amplifier in single package
Low voltage operation 2.7V
1.240V ± 2.5% reference
CTR Matching 15%
>70dB THD
70dB CMRR
3,750V
UL approval pending
Power supply feedback
Telecom central office supply
Telecom bricks
Modem transformer replacement
Digital telephone isolation
rms
NC
NC
isolation
K
A
4
1
2
3
8 LED (Input)
7
6
5
COMP
FB
GND
www.clare.com
Optically Isolated Linear Error Amplifier
Description
The LIA120 Optically Isolated Reference Amplifier
combines Clare’s linear optical coupler technology
with an industry standard 431 type precision
programmable shunt regulator to provide very
linear high gain with excellent temperature stability
for a total gain error of less than 2dB. By using
optical feedback, the LIA120 essentially eliminates
temperature and gain variations due to current
transfer ratio (CTR) changes in optocouplers while
increasing the bandwidth up to 10X and easing
engineering design constraints.
The LIA120 is very well suited for high gain feedback
amplifiers that require excellent linearity and low
temperature variation such as isolated power
supply feedback stages, modem audio transformer
replacement, isolated industrial control signals, and
sensor feedback.
By using the LIA120, system designers can save
precious board space and reduce component count.
Available in an 8 pin surface mount package.
Ordering Information
Part #
LIA120S
LIA120STR
Description
8 Pin Surface Mount (50/Tube)
Tape and Reel (1000/Reel)
LIA120
1

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LIA120S Summary of contents

Page 1

... By using the LIA120, system designers can save precious board space and reduce component count. Available pin surface mount package. Ordering Information Part # LIA120S LIA120STR 8 LED (Input) 7 COMP 6 FB GND 5 www.clare.com ...

Page 2

... COMP Open 10V (Fig 1µ ≤ 50 25° min 50 500 V (Note 3) I 1.0 mA 100 kΩ 100 Hz LED mA, 100 mV LED PP R ˜ www.clare.com Symbol Min Typ V 0.8 1.2 F 1.210 - V REF 1.228 1. REF (DEV) REF (DEV 1.0 2 (Fig 100 226 REF ...

Page 3

... TEST CIRCUIT REF F LED (MIN) I OFF FIG TEST CIRCUIT OFF KAO 100K V OUT Rev. 2 FIG LED I KAO 2 10V COMP FIG. 4. CTR TEST CIRCUIT DC I LED VCM _ + 10V PP Fig. 5. CMRR Test Circuit www.clare.com LIA120 I LED 8 I REF REF 5 TEST CIRCUIT REF REF 5 3 ...

Page 4

... LED 200 I = 1mA LED 0 -40 - 100 LIA120 Bandwidth vs. Temperature for High Frequency Applications www.clare.com LIA120 Reference Voltage vs. Ambient Temperature 1. 10mA LED 1.37 1.24 1.21 1.18 -40 - LIA120 LED Forward Current vs. Forward Voltage 20 -5ºC 85º 1.0 1.1 1.2 1.3 1.4 1.5 ...

Page 5

... Performance data shown in the graphs above is typical of device performance. For guaranteed parameters not indicated in the written specifi cations, please contact our application department. Rev. 2.0 PERFORMANCE DATA* 7.0E+ 8.0E+ 9.0E www.clare.com LIA120 LIA120 Noise Spectrum for 40dB Gain Setup (220K/2.2K Gain) 0 -20 -40 -60 -80 ...

Page 6

... LIA120 OUT + V OUT – Fig. 6. Power Supply Feedback Application Circuit OUT 100 Ω 100 Ω Fig. 7. Non-inverting Linear Amplifier Circuit www.clare.com + – Rev. 2.0 ...

Page 7

... LED resistance (25 ohms) and Gm is the transconductance of the 431 (3 Siemens). However, since some of these elements vary over m operating conditions and temperature, the bandwidth m should be practically limited to less than 40kHz to avoid oscillations, which is the value computed by 100pF. m www.clare.com which Siemens ...

Page 8

... The load resistors can be REF placed in series with the cathode or anode for desired output polarity. Manufaturing Information Soldering Recommended soldering processes are limited to 245ºC component body temperature for 10 seconds. Washing Clare does not recommend ultrasonic cleaning or the use of chlorinated solvents. 8 www.clare.com Rev. 2.0 ...

Page 9

... The products described in this document are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body other applications intended to support or sustain life, or where malfunction of Clare’s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. Clare, Inc. reserves the right to discontinue or make changes to its products at any time without notice ...

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