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om .c 4U et 5-DoteRed/Green LED Level Meter Sh U s e ta Aa C v m uh D C ll ee v ee ll m ee tt ee rr ss ss u cc h aa ss ViUnmle tmeer st e. r s . .D sg a w w w F e a t u re s a n d F u n c t i o n s
Capable of generating a bar-display for input voltage with 5 LEDs. Operates from either AC or DC input
Silicore
CD1403GS
Outline Drawing
v o l t a g e b e c a u s e o f o n - c h i p r e c t i f i e r a m p l i f i e r.
Lighting levels remain stable to line regulation because of on-chip voltage reference.
LEDs are driven by a constant current; stable to line regulation.
Power supply voltage range is wide (3.5 to 16V), for a wide range of applications.
Five types of ICs constitute the series with various lighting levels of the LEDs and driving currents.
SIP-9 pin package and fewer externally connected components result in smaller space requirements on the circuit board. Low noise at LED lighted mode
Block Diagram AND PIN CONNECTION
m o .c U t4 e e h S ta a .D w w w
+ _ + _ + _ + _ + _ _ amp + 2 Vc2 3 Vc3 4 6 5 Vc4 GND Vc5 7 Amp Out 8 IN 9 Vcc
1 Vc1
om .c 4U et he SHAOXING SILICORE TECHNOLOGY CO.,LTD aS www. Silicore. com. cn at CHMC .D w w w
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A b s o l u t e M a x i m u m R a t i n g s ( Ta = 2 5 C )
Characteristics M a x i m u m S u p p l y Vo l t a g e Allowable Power dissipation O p e r a t i n g Te m p e r a t u r e S t o r a g e Te m p e r a t u r e Symbol Vcc max Pd max To p g Ts t g Va l u e 18 11 0 0 -25 to +75 -55 to +125
CD1403GS
Unit V mW C C
A l l o w a b l e O p e r a t i n g C o n d i t i o n s ( Ta = 2 5 C )
Characteristics S u p p l y Vo l t a g e Symbol Vcc min 3.5 Ty p 6 max 16 Unit V
E l e c t r i c a l C h a r a c t e r i s t i c s ( Ta = 2 5 C , V c c = 6 V, F = 1 k H z )
Characteristics Current Dissipation Sensitivity Comparator Level 1 Comparator Level 2 Comparator Level 3 Comparator Level 4 Comparator Level 5 LED Constant Current Input Bias Current Symbol Icc VIN Vc1 Vc2 Vc3 Vc4 Vc5 ILED IINB Point of adjustment 2.5 5 11 -1.0 Te s t C o n d i t i o n VIN=0 Vc3 on-level 74 - 11 . 5 -6 min Ty p 5 85 -10 -5 0 3 6 15 -0.3 3.5 7 18.5 max 8 96 -8.5 -4 Unit mA m Vr m s dB dB dB dB dB mA uA
S a m p l e A p p l i c a t i o n C i rc u i t a n d Te s t C i rc u i t ( A C i n p u t V U m e t e r )
+ _
+ _
+ _
+ _
+ _
_ amp + Icc
D1
1
D2
2
D3 3
D4
4
56 D5 R1 10K
7 C1 10uF
8
9
Vcc
LED
2.2uF AC IN VR 10K
*Capacitor to be omitted when used as a DC-input signal meter SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn
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CHMC
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* C 1 R1 time constant:
CD1403GS
The response time can be varied by varying the C1,R1 time constant (mainly the C1 value) When the C1,R1 time constant is larger: ... ... T h e r e s p o n s e t i m e ( a t t a c k t i m e a n d r e l e a s e t i m e ) i s m a d e s l o w e r. When the C1,R1 time constant is smaller: ... ... T h e r e s p o n s e t i m e ( a t t a c k t i m e a n d r e l e a s e t i m e ) i s m a d e f a s t e r. * Considerations relative to Pd max of the package: Due to the constant current ILED, most of the power consumed by the circuits is consumed within the IC. When lighting the five LEDs continuously for a prolonged length of time, make sure that Vcc does not exceed: Vcc=9V When using a higher power supply voltage, insert a resistor in series with the LEDs to restrain the power consumed within the IC package.
Vcc 10~16V 8~14V 6.5~12V
R 100 68 47 to Icc
C H A R A C T E R I S T I C C U RV E
P d m a x - - Ta
Allowable Power Dissipation, Pd max_mW
1200 1100 1000 800 600 550 400 200 0 -25 -20 0 20 40 60 75 80
A m b i e n t Te m p e r a t u r e Ta - C SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn
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CHMC

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