MCNIX MX171PC, MX171MC Datasheet

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MX171

FEATURES

Package : 8-pin SOP, 8-pin DIP

Operating voltage : 2.2V~6V

Operating temperature : -25oC~60oC

Supply current : max. 10mA (without output current)

DESCRIPTION

MX171 is designed for Amplitude system auto focus cameras. It is regarded as input component for SPD (Silicon Photo Detector), and comprises of circuits that drive AF magnet as output, an infrared emission diode current control circuit, and control circuit of sequential timing.

AMPLITUDE TYPE AUTO FOCUS IC

Surround light level : max. 20uA (SPD output current)

IRED drive output : min. 15mA

Magnet drive current : min. 300mA

Measuring time : max. 30ms

PIN CONFIGURATION

 

 

 

 

 

PIN FUNCTIONS

 

8 SOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SYMBOL

PIN NAME

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

MX171

8

 

 

OUT

GND

Ground Pin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SPD

 

 

3

6

 

 

CT

CH

Hold Capacitor Pin

CH

 

 

2

 

7

 

 

IRED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

4

 

5

 

 

VR

SPD

SPD Input Pin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

Supply Pin

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VR

VR Pin for Adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CT

Timing Capacitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IRED

Output Control for IRED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

Data Output Pin

 

 

 

 

 

 

 

 

 

 

 

P/N: PM0167

1

REV 1.2, JAN 05, 1996

MX171

BLOCK DIAGRAM

VCC

 

 

 

AF ADJ.

 

 

 

AF SPD

REFERENCE

 

POWER VCC

 

 

 

 

 

 

AF MAG.

HEAD AMP

COMPARATOR

LATCH

MAG.

 

 

 

DRIVER

SURROUNDING LIGHT

 

IRED

 

 

 

REJECTION

 

IRED DRIVE CIRCUIT

 

 

POWER

 

 

 

GND

 

SEQUENCE CONTROL CIRCUIT

 

 

BASIC CONNECTION DIAGRAM

SW1

AF.MAG

1

GND

AF.MAG

8

 

C2

 

 

IRED

R1

 

 

 

 

2

CH

IRED

7

C3

C1

 

 

TR1

 

R3

SPD

CT

R2

 

3

6

 

SPD

 

 

C4

 

 

 

 

 

4

VCC

VR (ADJ)

5

 

 

 

 

AF.ADJ. VR

 

 

 

 

33KW~ 50KW

 

NOTE:

 

R1

=

1K ohm~10K ohm

C1

= > 47uF

C2

=

0.47uF

R2

=

1 ohm

C3

=

150uF

R3

=

27K ohm

C4

=

0.022uF

R4

=

10K ohm

P/N: PM0167

REV 1.2, JAN 05, 1996

2

 

 

 

 

 

MX171

 

 

 

 

 

 

ABSOLUTE MAXIMUM RATINGS

 

 

 

 

 

 

 

 

 

 

 

 

SYMBOL

PARAMETER

RATING

UNIT

CONDITION

 

 

 

 

 

 

 

 

VCC

Supply Voltage

-0.3~6.0

V

 

 

 

 

 

 

 

 

 

 

PD

Power Dissipation

550

mW

TA<5oC

 

 

 

 

 

 

 

 

PDR

Power Dissipation Ratio

-5.5

mW/oC

TA>25oC

 

 

 

 

 

 

 

 

VIN

Input Voltage

-0.3~VCC+0.3

V

 

 

 

 

 

 

 

 

 

 

BVOC

Output Voltage

-0.3~6.0

V

 

 

 

 

 

 

 

 

 

 

IOUT

Output Current

400

mA

 

 

 

 

 

 

 

 

 

 

TOPR

Operating Temperature 1

-25~+60

oC

(NOTE)

 

TOPR

Operating Temperature 2

-10~+50

oC

 

 

 

TSTG

Storage Temperature

-55~+150

oC

 

 

NOTE: The operating temperature 1 range expresses the qualitative operating temperature range but it does not guarantee characteristics.

DC CHARACTERISTICS (TA = 25oC, VCC = 2.2V, 3.0V, 6.0V)

SUPPLY CURRENT

SYMBOL

PARAMETER

MIN

TYP

MAX

UNIT

CONDITION

 

 

 

 

 

 

 

ICC1

Quick Charge State (Charge)

1.5

3.2

5.5

mA

 

 

 

 

 

 

 

 

ICC2

Quick Charge State (Discharge)

1.8

3.1

6.0

mA

 

 

 

 

 

 

 

 

ICC3

Steady State (Charge)

1.2

2.2

4.2

mA

 

 

 

 

 

 

 

 

ICC4

Steady State (Discharge)

1.2

2.1

4.0

mA

 

 

 

 

 

 

 

 

ICC5

IRED Flashing State

1.2

2.2

4.0

mA

 

 

 

 

 

 

 

 

ICC6

Finish State

 

16.0

40.0

mA

output "on"

 

 

 

 

 

 

 

TIMING CIRCUIT

SYMBOL

PARAMETER

MIN

TYP

MAX

UNIT

CONDITION

ICT

CT Charge Current

0.8

1.3

1.8

uA

 

 

 

 

 

 

 

 

RCT

Discharge Resistance

4.5

7.3

10.0

K ohm

 

 

 

 

 

 

 

 

VTH1

Threshold Voltage1

640

680

720

mV

 

 

 

 

 

 

 

 

VTH2

Threshold Voltage2

1250

1350

1450

mV

 

 

 

 

 

 

 

 

P/N: PM0167

REV 1.2, JAN 05, 1996

3

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