MX172 TRIANGULAR TYPE AUTO FOCUS IC FEATURES • • • • • • • • • 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. HEADQUARTERS: TEL:+886-3-578-8888 FAX:+886-3-578-8887 EUROPE OFFICE: TEL:+32-2-456-8020 FAX:+32-2-456-8021 JAPAN OFFICE: TEL:+81-44-246-9100 FAX:+81-44-246-9105 SINGAPORE OFFICE: TEL:+65-747-2309 FAX:+65-748-4090 TAIPEI OFFICE: TEL:+886-3-509-3300 FAX:+886-3-509-2200 MACRONIX AMERICA, INC. TEL:+1-408-453-8088 FAX:+1-408-453-8488 CHICAGO OFFICE: 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. 6