MCNIX MX172 Triangular type auto focus ic Datasheet

MX172
TRIANGULAR TYPE AUTO FOCUS IC
FEATURES
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Package : 14-pin SSOP
Operating voltage : 2V~4V
Operating temperature : -25oC~60oC
Supply current : max. 10mA (without output current)
Input current level : 1nA~5uA
Surround light level : max. 50uA (PSD output current)
IRED drive output : min. 20mA
Magnet drive current : min. 200mA
Measuring time : max. 50ms
DESCRIPTION
MX172 is designed for Triangular system auto focus
cameras. It is regarded as input component for PSD
(Position Sensitive Diode), and comprises of circuits that
drive AF magnet as output, an infrared emission diode
current control circuit, and control circuit of sequential
timing.
PIN FUNCTIONS
PIN CONFIGURATION
14 SSOP
PIN NAME
GND
Ground Pin
14
OUT1
CH1
Hold Capacitor Pin 1
CH1
2
13
OUT2
PSD1
PSD Input Pin 1
PSD1
3
12
IRED
PSD2
PSD Input Pin 2
PSD2
4
11
CTRL
CH2
Hold Capacitor Pin 2
CH2
5
10
CT
VCC
Supply Pin (Secondly)
VCC
6
9
VR1
VE
7
8
VR2
VE
Supply Pin (Battery)
VR2
VR Pin for Adjustment 2
VR1
VR Pin for Adjustment 1
CT
Timing Capacitor
CTRL
Power Control
IRED
Output Control for IRED
OUT2
Data Output Pin 2 (MSB)
OUT1
Data Output Pin 1(LSB)
MX172
GND
P/N: PM0168
SYMBOL
1
REV. 2.1, AUG 29, 1995
MX172
BLOCK DIAGRAM
VR1
VR2
Comparator
GND
Surrounding light
rejection 1
PSD1
Latch
and
Encode
AF Adjust
CH1
Output
Driver
Output1, 2
Head Amp.1
Inf.Cramp
PSD2
IRED
Head Amp.2
Operation
IRED Drive Circuit
Surrounding light
rejection 2
CH2
Sequence Control Logic
Timing Circuit
Vcc
Switch
VE
CTLR
C Timing
BASIC CONNECTION DIAGRAM
C1
C2
0.47mF
1 GND
OUT1 14
2 CH1
OUT2 13
IRED
3 PSD1
IRED 12
4 PSD2
CTRL 11
PSD
R3
SW1
C4
C3
0.47mF
5 CH2
C TIMING 10
6 VCC
VR1 9
7 VE
VR2 8
0.022mF
VR1
VR2
REV. 2.1, AUG 29, 1995
P/N: PM0168
2
MX172
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
CONDITION
VCC
Supply Voltage
-0.3~4.0
V
PD
Power Dissipation
350
mW
TA<25oC
PDR
Power Dissipation Ratio
-3
mW/oC
TA>25oC
VIN
Input Voltage
-0.3~VCC+0.3
V
BVOC
Output Voltage
-0.3~7.0
V
IOUT
Output Current
400
mA
TOPR
Operating Temperature 1
-25~+60
o
C
TOPR
Operating Temperature 2
-15~+50
o
C
TSTG
Storage Temperature
-55~+150
o
C
(NOTE)
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, 4.0V)
SUPPLY CURRENT
SYMBOL
PARAMETER
ICC1
Standby Current
ICC1
Quick Charge State (Charge)
ICC2
MIN
TYP
MAX
UNIT
3.0
uA
2.5
7.0
mA
Quick Charge State (Discharge)
2.5
7.0
mA
ICC3
Steady State (Charge)
2.0
5.0
mA
ICC4
Steady State (Discharge)
2.0
5.0
mA
ICC5
IRED Flashing State
8.0
mA
ICC6
Finish State
40.0
mA
CONDITION
TIMING CIRCUIT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
ICT
CT Charge Current
0.8
1.3
2.0
uA
RCT
Discharge Resistance
5.6
7.0
8.5
K ohm
VTH1
Threshold Voltage1
655
680
740
mV
VTH2
Threshold Voltage2
1280
1383
1420
mV
DVTH2/3
Deference Vth2/3
14.0
25.0
35.0
mV
VSATPNP
VE/VCC PNP VCE (SAT)
220
mV
CONDITION
REV. 2.1, AUG 29, 1995
P/N: PM0168
3
MX172
HEAD AMPLIFIER/ADJUSTMENT CIRCUIT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
CONDITION
VIN
Input Voltage
620
680
740
mV
ISDMX
Max. Surround Light
16.0
IADJ
Adj. VR Current
38.0
44.0
50.0
uA
VCOMP1
Compare Voltage1
318
336
354
mV
Signal Ratio=3:7
VCOMP2
Compare Voltage2
530
560
590
mV
Signal Ratio=5:5
TYP
MAX
UNIT
CONDITION
uA
HOLD CAPACITOR CHARGE/DISCHARGE CURRENT
SYMBOL
PARAMETER
MIN
ICH1
Quick Charge Current
-300
-1000
uA
ICH2
Quick Discharge Current
460
1200
uA
ICH3
Steady Charge Current
-7
-11
-16
uA
ICH4
Steady Discharge Current
7
11
16
uA
ICH5
CH Input Current
100
nA
MAX
UNIT
CONDITION
DATA OUTPUT TERMIANAL
SYMBOL
PARAMETER
MIN
TYP
IOUTLK1
Output Leak Current 1
1.0
uA
VO = 10.0V
IOUTLK2
Output Leak Current 2
1.0
uA
VO=VCC
VOUTSAT1
Saturation Voltage
300
mV
IO = 20mA
IOUTMX1
Max. Output Current1
VOUTMAX1
Max. Voltage1
10.0
V
VOUTSAT2
Saturation Voltage2
300
mV
IOUTMX2
Max. Output Current2
300
VOUTMX2
Max. Voltage2
6.0
8.0
10.0
V
IO = 300mA
CONDITION
20
mA
IO = 300mA
mA
IRED FLASHING CONTROL CIRCUIT
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
VIRED1
IRED Voltage (ON)
920
980
1030
mV
VIRED2
IRED Voltage (OFF)
350
mV
IIREDMX
Max. Output Current
15.0
mA
REV. 2.1, AUG 29, 1995
P/N: PM0168
4
MX172
TIMING WAVEFORM
SW1 (POWER)
IRED
AF MAG.
20MS (TYP.)
0.12MS (TYP.)
ORDERING INFORMATION
PART NO.
PACKAGE
MX172MC
14 pin SSOP
PACKAGE INFORMATION
14 PIN PLASTIC SSOP
14
8
UNIT : mm
1
7
5.0+0.3
6.4+0.3
0.11
0.22+0.1
0.2+0.1
1.15+0.2
4.4+0.2
0.65
0.10
0.3 MIN
REV. 2.1, AUG 29, 1995
P/N: PM0168
5
MX172
MACRONIX INTERNATIONAL CO., LTD.
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TEL:+1-847-963-1900
FAX:+1-847-963-1909
http : //www.macronix.com
MACRONIX INTERNATIONAL CO., LTD. reserves the rignt to change product and specifications without notice.
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