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 |
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PIN FUNCTIONS |
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8 SOP |
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SYMBOL |
PIN NAME |
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GND |
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MX171 |
8 |
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OUT |
GND |
Ground Pin |
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SPD |
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3 |
6 |
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CT |
CH |
Hold Capacitor Pin |
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CH |
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2 |
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7 |
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IRED |
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VCC |
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4 |
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5 |
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VR |
SPD |
SPD Input Pin |
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VCC |
Supply Pin |
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VR |
VR Pin for Adjustment |
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CT |
Timing Capacitor |
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IRED |
Output Control for IRED |
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OUT |
Data Output Pin |
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P/N: PM0167 |
1 |
REV 1.2, JAN 05, 1996 |
MX171
BLOCK DIAGRAM
VCC |
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AF ADJ. |
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AF SPD |
REFERENCE |
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POWER VCC |
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AF MAG. |
HEAD AMP |
COMPARATOR |
LATCH |
MAG. |
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DRIVER |
SURROUNDING LIGHT |
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IRED |
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REJECTION |
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IRED DRIVE CIRCUIT |
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POWER |
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GND |
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SEQUENCE CONTROL CIRCUIT |
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BASIC CONNECTION DIAGRAM
SW1
AF.MAG
1 |
GND |
AF.MAG |
8 |
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C2 |
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IRED |
R1 |
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2 |
CH |
IRED |
7 |
C3 |
C1 |
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TR1 |
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R3 |
SPD |
CT |
R2 |
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3 |
6 |
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SPD |
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C4 |
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4 |
VCC |
VR (ADJ) |
5 |
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AF.ADJ. VR |
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33KW~ 50KW |
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NOTE: |
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R1 |
= |
1K ohm~10K ohm |
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C1 |
= > 47uF |
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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
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MX171 |
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ABSOLUTE MAXIMUM RATINGS |
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SYMBOL |
PARAMETER |
RATING |
UNIT |
CONDITION |
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VCC |
Supply Voltage |
-0.3~6.0 |
V |
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PD |
Power Dissipation |
550 |
mW |
TA<5oC |
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PDR |
Power Dissipation Ratio |
-5.5 |
mW/oC |
TA>25oC |
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VIN |
Input Voltage |
-0.3~VCC+0.3 |
V |
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BVOC |
Output Voltage |
-0.3~6.0 |
V |
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IOUT |
Output Current |
400 |
mA |
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TOPR |
Operating Temperature 1 |
-25~+60 |
oC |
(NOTE) |
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TOPR |
Operating Temperature 2 |
-10~+50 |
oC |
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TSTG |
Storage Temperature |
-55~+150 |
oC |
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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 |
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ICC1 |
Quick Charge State (Charge) |
1.5 |
3.2 |
5.5 |
mA |
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ICC2 |
Quick Charge State (Discharge) |
1.8 |
3.1 |
6.0 |
mA |
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ICC3 |
Steady State (Charge) |
1.2 |
2.2 |
4.2 |
mA |
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ICC4 |
Steady State (Discharge) |
1.2 |
2.1 |
4.0 |
mA |
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ICC5 |
IRED Flashing State |
1.2 |
2.2 |
4.0 |
mA |
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ICC6 |
Finish State |
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16.0 |
40.0 |
mA |
output "on" |
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TIMING CIRCUIT
SYMBOL |
PARAMETER |
MIN |
TYP |
MAX |
UNIT |
CONDITION |
ICT |
CT Charge Current |
0.8 |
1.3 |
1.8 |
uA |
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RCT |
Discharge Resistance |
4.5 |
7.3 |
10.0 |
K ohm |
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VTH1 |
Threshold Voltage1 |
640 |
680 |
720 |
mV |
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VTH2 |
Threshold Voltage2 |
1250 |
1350 |
1450 |
mV |
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P/N: PM0167 |
REV 1.2, JAN 05, 1996 |
3