MX171 AMPLITUDE TYPE AUTO FOCUS IC FEATURES • Package : 8-pin SOP, 8-pin DIP • Operating voltage : 2.2V~6V • • • • • Operating temperature : -25oC~60oC • 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 PIN FUNCTIONS 8 SOP P/N: PM0167 CH 2 SPD 3 VCC 4 MX171 GND SYMBOL PIN NAME 8 OUT GND Ground Pin 7 IRED CH Hold Capacitor Pin 6 CT SPD SPD Input Pin 5 VR VCC Supply Pin VR VR Pin for Adjustment CT Timing Capacitor IRED Output Control for IRED OUT Data Output Pin 1 REV 1.2, JAN 05, 1996 MX171 BLOCK DIAGRAM VCC AF ADJ. POWER VCC AF SPD REFERENCE AF MAG. HEAD AMP COMPARATOR LATCH MAG. DRIVER SURROUNDING LIGHT IRED IRED DRIVE CIRCUIT REJECTION POWER GND SEQUENCE CONTROL CIRCUIT BASIC CONNECTION DIAGRAM SW1 AF.MAG AF.MAG 8 1 GND R1 IRED C2 IRED 7 2 CH C3 TR1 C1 R3 3 SPD CT 6 4 VCC VR (ADJ) 5 SPD R2 C4 AF.ADJ. VR 33KW~ 50KW NOTE: C1 = > 47uF C2 = 0.47uF C3 = 150uF C4 = 0.022uF R1 R2 R3 R4 = = = = 1K ohm~10K ohm 1 ohm 27K ohm 10K ohm REV 1.2, JAN 05, 1996 P/N: PM0167 2 MX171 ABSOLUTE MAXIMUM RATINGS SYMBOL PARAMETER RATING UNIT 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 C TOPR Operating Temperature 1 -25~+60 o TOPR Operating Temperature 2 -10~+50 o C TSTG Storage Temperature -55~+150 o C CONDITION (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, 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" CONDITION TIMING CIRCUIT SYMBOL PARAMETER MIN TYP MAX UNIT 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 REV 1.2, JAN 05, 1996 P/N: PM0167 3 MX171 HEAD AMPLIFIER/ADJUSTMENT CIRCUIT SYMBOL PARAMETER MIN TYP MAX UNIT VIN Input Voltage 620 660 700 mV ISDMX Max. Surround Light 13.0 32.0 VRADJ Resistor Range 0.45 RON Adjust Risistance (ON) 4.5 ROFF Adjust Risistance (OFF) CONDITION uA 200 K ohm K ohm 0.47 K ohm Iin=50uA 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 MIN TYP MAX UNIT CONDITION 1.0 uA VO = 7.0V 500 mV IO = 300 mA DATA OUTPUT TERMIANAL SYMBOL PARAMETER IOUTLK Output Leak Current VOUTSAT Saturation Voltage IOUTMX Max. Output Current 300 VOUTMX Max. Voltage 6.0 8.0 10.0 V IO = 300 mA CONDITION 460 mA IRED FLASHING CONTROL CIRCUIT SYMBOL PARAMETER MIN TYP MAX UNIT 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 REV 1.2, JAN 05, 1996 P/N: PM0167 4 MX171 TIMING WAVEFORM SW1 (POWER) IRED AF MAG. 20MS (TYP.) 0.12MS (TYP.) ORDERING INFORMATION PART NO. PACKAGE MX171MC 8 pin SOP MX171PC 8 pin PDIP REV 1.2, JAN 05, 1996 P/N: PM0167 5 MX171 PACKAGE INFORMATION 8 PIN PLASTIC SOP 5 8 UNIT : mm 1 4 5.0+0.3 6.2+0.3 4.4+0.2 0.11 0.2+0.1 1.5+0.1 0.4+0.1 1.27 0.15 0.3 MIN REV 1.2, JAN 05, 1996 P/N: PM0167 6 MX171 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. 7