KIA6967S

SEMICONDUCTOR TECHNICAL DATA 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. 1 KIA6967S BIPOLAR LINEAR INTEGRATED CIRCUIT A B 9 FEATURES Low Spurious Noise Operation. Constant Driving Current : Io=8mA(Typ.) Indication Level Steps : 2dB, 2dB, 2dB, 2dB Wide Operating Supply Voltage Range : Vcc=4 12V Variable Input Amplifier Gain : Gv=0 20dB P G L H d D T DIM A B D d G H L P T MILLIMETERS _ 22.48 + 0.2 _ 3.2 + 0.2 _ 1.2 + 0.25 _ 0.5 + 0.1 _ 1.95 + 0.2 _ 7.7 + 0.3 _ 3.2 + 0.3 2.54 0.25+0.1/-0.05 SIP-9 MAXIMUM RATINGS (Ta=25 ) SYMBOL VCC (Note 1) VL PD Topr Tstg RATING 14 15 600 -25 75 -55 150 UNIT V V mW CHARACTERISTIC Supply Voltage LED Driving Terminal Voltage Power Dissipation (Note 2) Operating Temperature Storage Temperature Note 1) For Pin and in the proportion of 4.8mW/ Note 2) Derated above Ta=25 for KIA6967S. 2006. 2. 23 Revision No : 0 1/3 KIA6967S ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC=9V, f=1kHz, Ta=25 ) CHARACTERISTICS Quiescent Current Output Current Output Leak Current Sensitivity SYMBOL ICCQ Io (1 5) Io (OFF) VLD5 (ON) LD5 LD4 LED Turn-on Input Level LD3 LD2 LD1 TEST CIRCUIT Rs=24k , Rf=100k Io=1mA Rs=24k , Rf=100k TEST CONDITION VIN=0V MIN. 5 -1 -3 -5 -7 -9 TYP. 3 8 230 0 -2 -4 -6 -8 MAX. 5 10 50 1 -1 -3 -5 -7 dB UNIT mA mA A mVrms TEST CIRCUT / BLOCK DIAGRAM VCC I CC I RD I 05 VIN CS 4.7uF 9 RS 24kΩ 8 VCC AMP + VCC 6 I 04 4 I 03 3 I 02 2 I 01 1 + 1 2 7 C5 + - C4 + - C3 + - C2 + C1 R1 GND 5 VREF R5 VD R4 R3 R2 Rf 0.47uF 100kΩ Cf INTERNAL RESISTANCE VALUE KIA6967S R1 R2 R3 R4 R5 3.66 0.948 1.19 1.5 1.89 UNIT k k k k k 2006. 2. 23 Revision No : 0 2/3 KIA6967S PRECAUTION FOR USE AND APPLICATION METHOD VCC I CC I RD I 05 9 VIN CS RS 8 VCC AMP + VCC 6 I 04 4 I 03 3 I 02 2 I 01 1 + 1 2 7 C5 R5 + - C4 R4 + - C3 R3 + - C2 R2 + - C1 R1 V REF GND 5 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 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 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 2006. 2. 23 Revision No : 0 3/3