L8211

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R123-008,C

TONE DETECTION CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Filter Amplifier

Input Bias Current

IB

RF1=150kΩ

0.02

0.07

0.25

µA

Output Voltage

VOUT

RF1=150kΩ

1.75

1.95

2.05

V

Output Current

IOUT

VOUT=1.96V, VFIN=2.1V

400

520

650

µA

Voltage Gain

Gv

f=22kHz, VIN=1mV

46

dB

Rejection Frequency

fR

V(AC)IN=1V p/p sq.w

1.0

7.5

kHz

V Threshold

FVT

100

350

mV p/p

Output Stage

Lov Volt.Range

VLOV

IL=50mA(LB or HB)

-0.5

VCC-1.8

V

Lov Bias Current

ILOV

VLOV=0V

0.02

0.15

1

µA

LB Output Low

VLBL

VLOV=0V, IL=-10µA

Enable

-3.5

-2.75

-2.5

V

VLOV=3V, IL=0mA

Enable

-0.01

0

0.01

V

LB Output High

VLBH

VLOV=0V, IL=10 mA

Disable -0.025

0

0.025

V

VLOV=3V, IL=50mA

Disable

2.9

3

3.1

V

HB Output Low

VHBL

VLOV=0V, IL=-10µA

Disable

-3.5

-2.75

-2.5

V

VLOV=3V, IL=0mA

Disable -0.01

0

0.01

V

HB Output High

VHBH

VLOV=0V, IL=10mA

Enable -0.025

0

0.025

V

VLOV=3V, IL=50mA

Enable

2.9

3

3.1

V

Note: Noise voltage measurement would be ignored in production.

POLARITY SWITCH CHARACTERISTICS

PARAMETER

SYMBOL

TEST CONDITION

MIN.

TYP.

MAX.

UNIT

Input Current

IPOL

VPOL=25V (Applied via RPOL=10kΩ)

10

20

40

µA

Threshold Voltage

VTPOL

VPOL=25V (Applied via RPOL=10kΩ)

14

14.75

15.5

V

Switching Speed

TSPOL

VPOL=25V (Applied via RPOL=10kΩ)

100

ms