鈥?/div>
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 CONFIGURATION
14 SSOP
GND
CH1
PSD1
PSD2
CH2
VCC
VE
2
3
14
13
12
OUT1
OUT2
IRED
CTRL
CT
VR1
VR2
PIN FUNCTIONS
SYMBOL
GND
CH1
PSD1
PSD2
CH2
VCC
VE
VR2
VR1
CT
CTRL
IRED
OUT2
OUT1
PIN NAME
Ground Pin
Hold Capacitor Pin 1
PSD Input Pin 1
PSD Input Pin 2
Hold Capacitor Pin 2
Supply Pin (Secondly)
Supply Pin (Battery)
VR Pin for Adjustment 2
VR Pin for Adjustment 1
Timing Capacitor
Power Control
Output Control for IRED
Data Output Pin 2 (MSB)
Data Output Pin 1(LSB)
MX172
4
5
6
7
11
10
9
8
P/N: PM0168
1
REV. 2.1, AUG 29, 1995