SP4501 Datasheet, PDF (6/13 Pages) Sipex Corporation – EL Plus Piezo Driver

SP4501
3
ROSC
1
ELEN
2
PZEN
OSC
EN
fOSC
FF4
FF3
INT CLOCK
SELECT ^SELECTION
LOGIC
EXT CLOCK
CLOCK
SENSORY
CIRCUIT
1
5
PZCK PZCK
Figure 1: Internal Block Diagram of SP4501
VDD
14
8
COIL
9
CAP
fOSC
SCR1
fLAMP
fLAMP
fPZ
fPZ
SCR2
SCR3
SCR4
7
12 13
VSS
EL1 EL2
10 11
PZ1 PZ2
+3V
500kΩ
ELEN
PZEN
10nF
PZCK
PZCK
N/C
1
2
ROSC ₃
4
5
6
VSS
7
Figure 2: Test Circuit of the SP4501
11-14-00
SP4501
+3V
VDD
14
EL2
13
12 ^EL1
PZ2
11
10 ^PZ1
CAP
9
0.1µF
CEL
7.3nF,
2.5in²
CPZ
16nF
1800pF
8
1N4148
COIL
+3V
820µH*
*DC Resistance 13Ω*
SP4501 EL Plus Piezo Driver
6
© Copyright 2000 Sipex Corporation