REV 1.2, JAN 05, 1996
P/N: PM0167
1
FEATURES
Package : 8-pin SOP, 8-pin DIP
Operating voltage : 2.2V~6V
Operating temperature : -25
o
C~60
o
C
Supply current : max. 10mA (without output current)
Surround light level : max. 20uA (SPD output current)
IRED drive output : min. 15mA
Magnet drive current : min. 300mA
Measuring time : max. 30ms
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.
PIN CONFIGURATION
8 SOP
PIN FUNCTIONS
SYMBOL
PIN NAME
GND
Ground Pin
CH
Hold Capacitor Pin
SPD
SPD Input Pin
VCC
Supply Pin
VR
VR Pin for Adjustment
CT
Timing Capacitor
IRED
Output Control for IRED
OUT
Data Output Pin
MX171
AMPLITUDE TYPE AUTO FOCUS IC
8
7
6
5
2
3
4
OUT
IRED
CT
VR
GND
CH
SPD
VCC
MX171
2
REV 1.2, JAN 05, 1996
P/N: PM0167
MX171
BLOCK DIAGRAM
BASIC CONNECTION DIAGRAM
NOTE:
C1 = > 47uF
C2 = 0.47uF
C3 = 150uF
C4 = 0.022uF
R1 = 1K ohm~10K ohm
R2 = 1 ohm
R3 = 27K ohm
R4 = 10K ohm
HEAD AMP
COMPARATOR
SURROUNDING LIGHT
REJECTION
REFERENCE
SEQUENCE CONTROL CIRCUIT
LATCH
MAG.
DRIVER
IRED DRIVE CIRCUIT
AF ADJ.
AF SPD
AF MAG.
POWER VCC
IRED
POWER
GND
VCC
1
2
3
4
GND
CH
SPD
VCC
8
7
6
5
AF.MAG
IRED
CT
VR (ADJ)
SW1
C2
C1
SPD
AF.MAG
R1
C3
R2
C4
IRED
TR1
AF.ADJ. VR
R3
33K ~ 50K
W
W
3
REV 1.2, JAN 05, 1996
P/N: PM0167
MX171
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
CONDITION
VCC
Supply Voltage
-0.3~6.0
V
PD
Power Dissipation
550
mW
TA<5
o
C
PDR
Power Dissipation Ratio
-5.5
mW/
o
C
TA>25
o
C
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
o
C
(NOTE)
TOPR
Operating Temperature 2
-10~+50
o
C
TSTG
Storage Temperature
-55~+150
o
C
NOTE: The operating temperature 1 range expresses the qualitative
operating temperature range but it does not guarantee charac-
teristics.
DC CHARACTERISTICS (TA = 25
o
C
, 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
4
REV 1.2, JAN 05, 1996
P/N: PM0167
MX171
HEAD AMPLIFIER/ADJUSTMENT CIRCUIT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CONDITION
VIN
Input Voltage
620
660
700
mV
ISDMX
Max. Surround Light
13.0
32.0
uA
VRADJ
Resistor Range
0.45
200
K ohm
RON
Adjust Risistance (ON)
4.5
K ohm
I
in=50uA
ROFF
Adjust Risistance (OFF)
0.47
K ohm
HOLD CAPACITOR CHARGE/DISCHARGE CURRENT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CONDITION
ICH1
Quick Charge Current
-460
-770
-1200
uA
ICH2
Quick Discharge Current
460
770
1200
uA
ICH3
Steady Charge Current
-7
-11
-15
uA
ICH4
Steady Discharge Current
7
11
15
uA
ICH5
CH Input Current
20
35
100
nA
DATA OUTPUT TERMIANAL
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CONDITION
IOUTLK
Output Leak Current
1.0
uA
VO = 7.0V
VOUTSAT
Saturation Voltage
460
500
mV
IO = 300 mA
IOUTMX
Max. Output Current
300
mA
VOUTMX
Max. Voltage
6.0
8.0
10.0
V
IO = 300 mA
IRED FLASHING CONTROL CIRCUIT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CONDITION
VIRED1
IRED Voltage (ON)
920
980
1030
mV
VIRED2
IRED Voltage (OFF)
230
270
310
mV
IIREDMX
Max. Output Current
15.0
32.0
mA
5
REV 1.2, JAN 05, 1996
P/N: PM0167
MX171
TIMING WAVEFORM
ORDERING INFORMATION
PART NO.
PACKAGE
MX171MC
8 pin SOP
MX171PC
8 pin PDIP
20MS (TYP.)
0.12MS (TYP.)
SW1 (POWER)
IRED
AF MAG.
6
REV 1.2, JAN 05, 1996
P/N: PM0167
MX171
PACKAGE INFORMATION
8 PIN PLASTIC SOP
5
8
4
1
5.0+0.3
1.27
0.4+0.1
0.11
1.5+0.1
6.2+0.3
4.4+0.2
0.2+0.1
0.3 MIN
0.15
UNIT : mm
7
MX171
M
ACRONIX
I
NTERNATIONAL
C
O.,
L
TD.
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TEL:+886-3-578-8888
FAX:+886-3-578-8887
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M
ACRONIX
A
MERICA,
I
NC.
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http : //www.macronix.com
MACRONIX INTERNATIONAL CO., LTD. reserves the rignt to change product and specifications without notice.
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