iC-OW

INCREMENTAL OPTO ENCODER

Rev A1, Page 5/7

ELECTRICAL CHARACTERISTICS

Operating Conditions: VCC= 5V ±10%, RZ= RLR= 15k

S, CLR= 10nF, 8= 850nm, Tj= -25..125°C, unless otherwise noted

Item

Symbol

Parameter

Conditions

Tj

Fig.

Unit

°C

Min.

Typ.

Max.

Push-Pull Outputs A, B, Z (continued)

306

Vc()hi

Clamp Voltage hi

Vc()hi= V()-VCC; I()= 4mA

0.4

1.5

V

307

Vc()lo

Clamp Voltage lo

I()=-4mA

-1.5

-0.4

V

LED Current Control: CLR, ILR, IZ, LED

601

ISUM

Permissible Total Photocurrent

ISUM= I(DPA)+I(DNA) +I(DPB)

+I(DNB)

-1500

-50

nA

602

I(LED)

Permissible Driver Current in LED

0.1

50

mA

603

Vs(LED)

Saturation Voltage lo at LED

I(LED)= 50mA,

I(ILR)> 5µA, ISUM= 0

27

0.4

0.8

1.2

V

V

604

Vref()

Reference Voltage at ILR, IZ

I(ILR,IZ)= -150..-5µA

1.15

1.22

1.28

V

606

Isc()

Short-Circuit Current in ILR, IZ

V(ILR)= 0, V(IZ)= 0

-5

mA

607

CR1()

Current Ratio I(ILR)/ISUM

closed LED control loop,

ISUM= -800..-50nA

80

100

125

608

CR2()

Current Ratio I(IZ)/I(DZ)

closed LED control loop,

I(DZ)= -400..-10nA

320

400

500

609

Vc()hi

Clamp Voltage hi

at LED, CLR, ILR, IZ

VCC= 0V, I()= 1mA

0.4

1.0

V

610

Vc()lo

Clamp Voltage lo

at LED, CLR, ILR, IZ

VCC= 0V, I()= -1mA

-1.0

-0.4

V

Error Output / AND Gate Disable Input NERR

501

R()

Internal Pull-Up Resistor

20

30

45

k

S

502

Vt()

AND Gate Turn-Off Threshold

Gate disabled if V(NERR)< 0.4V

0.4

1

V

701

Vs()lo

Saturation Voltage lo

I(NERR)= 1.6mA

I(NERR)= 5mA

0.4

0.8

V

V

702

Isc()lo

Short-Circuit Current lo

V(NERR)= 2V..VCC

5

30

mA

703

Vc()hi

Clamp Voltage hi

Vc()hi= V(NERR)-VCC;

NERR=hi, I(NERR)= 4mA

0.4

1.5

V

704

Vc()lo

Clamp Voltage lo

NERR=lo, I(NERR)=-4mA

-1.5

-0.4

V

Test Aid Inputs TIP, TIN, NTEST

A01 CR1()

Current Ratio

I(TIP) / I(DPA,DPB,DZ)

and I(TIN) / I(DNA,DNB)

NTEST= lo, I()= 5..200µA

300

400

550

A02 CR2()

Current Ratio

I(TIP,TIN) / I(CLR)

NTEST= lo, I()= 5..200µA

1.8

2

2.2

A03 V()on

Test Aid Operation Voltage

at TIP, TIN

NTEST= lo; I()= 5..200µA

1.2

2.6

V

A04 Ipd()

Pull-Down Current at TIP, TIN

V(NTEST) open, V(TIP,TIN)< 1V

50

500

µA

A05 Rpu()

Pull-Up Resistor at NTEST

V(NTEST)= 0..0.4V

80

210

550

k

S

A06 V0()

Voltage at NTEST

I(NTEST)= 0

0.35

0.7

1.0

V

A07 Vt()

Threshold Voltage lo at NTEST

0.3

V