SEMICONDUCTOR KIA6967S TECHNICAL DATA BIPOLAR LINEAR INTEGRATED CIRCUIT 5 DOT LED LEVEL METER The KIA6967S is designed for 5 LED level meter driver. Which is consist of one input amplifier and five comparators for LED level indication. B H A 9 G L 1 P FEATURES d T D Low Spurious Noise Operation. Constant Driving Current : Io=8mA(Typ.) DIM A B D d G H L P T Indication Level Steps : 2dB, 2dB, 2dB, 2dB Wide Operating Supply Voltage Range : Vcc=4 12V Variable Input Amplifier Gain : Gv=0 20dB MILLIMETERS _ 0.2 22.48 + _ 0.2 3.2 + _ 0.25 1.2 + _ 0.1 0.5 + _ 0.2 1.95 + _ 0.3 7.7 + _ 0.3 3.2 + 2.54 0.25+0.1/-0.05 SIP-9 MAXIMUM RATINGS (Ta=25 ) CHARACTERISTIC SYMBOL RATING UNIT VCC 14 V VL 15 V PD 600 mW Operating Temperature Topr -25 75 Storage Temperature Tstg -55 150 Supply Voltage LED Driving Terminal Voltage Power Dissipation Note 1) For Pin (Note 2) and Note 2) Derated above Ta=25 2006. 2. 23 (Note 1) in the proportion of 4.8mW/ Revision No : 0 for KIA6967S. 1/3 KIA6967S ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC=9V, f=1kHz, Ta=25 ) CHARACTERISTICS TEST SYMBOL TEST CONDITION CIRCUIT TYP. MAX. UNIT - 3 5 mA ICCQ - Output Current Io (1 5) - 5 8 10 mA Output Leak Current Io (OFF) - - - 50 A VLD5 (ON) - - 230 - mVrms LD5 - -1 0 1 LD4 - -3 -2 -1 -5 -4 -3 Quiescent Current Sensitivity LED Turn-on Input Level VIN=0V MIN. Rs=24k , Rf=100k Rs=24k , Rf=100k Io=1mA LD3 - LD2 - -7 -6 -5 LD1 - -9 -8 -7 dB TEST CIRCUT / BLOCK DIAGRAM VCC I RD I CC I 04 I 05 VIN 9 CS 8 4.7uF 6 VCC RS 24kΩ 4 I 02 3 I 01 2 1 VCC AMP + + C5 VREF I 03 1 7 VD C4 R5 2 + + C3 R4 + C2 R3 + C1 - R2 R1 GND 5 100kΩ Cf 0.47uF Rf INTERNAL RESISTANCE VALUE KIA6967S UNIT R1 3.66 k R2 0.948 k R3 1.19 k R4 1.5 k R5 1.89 k 2006. 2. 23 Revision No : 0 2/3 KIA6967S PRECAUTION FOR USE AND APPLICATION METHOD VCC I RD I CC I 04 I 05 9 6 8 RS CS AMP + + - V REF 4 I 02 3 I 01 2 1 VCC VCC VIN I 03 C5 1 R5 2 + - + C4 - R4 C3 R3 + - C2 + - C1 R2 R1 GND 5 7 Rf Cf 1. Setting of Turn-on Level Turn-on input level can be set through changing the voltage gain(GV) of the input amplifier. This voltage gain is determined by the external resistor (Rs, Rf) and obtained by the equation below. GV=20log Rf Rs (use in the range of GV=0 20dB) When Gv=0dB (Rs=Rf=100k ), the turn-on level at fifth LED is 958.3mVrms(Typ.) For turning on the fifth LED with the arbitrarily set input level (VIN), use the following equation to set Rs and Rf. Rf Rs = 958.3mVrms VIN (Use the resistor of Rf=56k or over) 2. Setting of Power Dissipation and Limiting Resistor Since the output of this IC is driver by constant current, all the output current (Io1 5) are dissipated in the IC. Therefore, set the limiting resistor (RD) so that the power dissipation (PD) may not exceed the maximum rating because of the ambient temperature. PD = VCC ICC + (VCC - RD I-VF) Io1 + + (VCC - RD I-VF) Io5 Total output current : I = Io1 + Io2 + Io3 + Io4 + Io5 LED forward voltage : VF=1.5V 2006. 2. 23 Revision No : 0 3/3