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參數(shù)資料
| 型號： | SP4439 |
| 英文描述： | Ultra-Quiet Electroluminescent Lamp Driver with Programmable Wave Shape(超靜場致發(fā)光燈驅(qū)動器（可編程波形）) |
| 中文描述： | 超靜音電致發(fā)光燈帶可編程波形（超靜場致發(fā)光燈驅(qū)動器（可編程波形）驅(qū)動程序） |
| 文件頁數(shù)： | 4/13頁 |
| 文件大小： | 193K |
| 代理商： | SP4439 |
Rev. 2/16/01 SP4439 Ultra-Quiet Electroluminescent Lamp Driver With Programmable Waveshape Copyright 2001 Sipex Corporation
4
Figure 2: Internal Block Diagram of the SP4439
V
SS
COIL
C
INT
SP4439
V
BATT
C1
0.1
μ
F
L1
820
μ
H/14
6
2
3
7
5
ELEN
1D1
INT
C
V
DD
EL2
EL1
EL Lamp
8
10
4
OSC
R
C2
1nF
R
OSC
R
D
1.1k
1
R
C
2.21k
9
R
D
R
C
Figure 1: Typical Operating Circuit for the SP4439
Figure 3: EL Differential Output Waveform of the EL1
and EL2 Outputs of the SP4439
Figure 5. Electroluminescent Lamp Noise Measurement
Setup for the SP4439
Figure 4: Dual Supply Application Circuit for the
SP4439
V
SS
COIL
C
INT
SP4439
V
CONTROL
= +2.7V to +3.3V
C1
0.1
μ
F
L1
820
μ
H/14
6
2
3
7
5
ELEN
1D1
C
INT
47nF
V
DD
EL2
EL1
EL Lamp
8
10
4
R
OSC
C2
1nF
R
OSC
V
POWER
= +2.7V to +9.0V
9
R
C
2.2
K
1
R
D
HP8903A Audio Analyzer - SPCL 3.1, 1.17
Preamplifier with 30kHz High Pass Filter
Tek754C Digital Osciliscope
Voltage Waveform Measurements
EL Driver
Differential
Current
Monitor
Aux 1
A-Weighting
MedBSPL
EL Lamp Noise Measurement Set-Up
Anechoic Chamber
Microphone
Photometer
4”
2”
1”
E
FF7
Q
Q
V
BATT
L1
820
μ
H/14
EL Lamp
10
8
EL2
5
V
SS
C
INT
COIL
EL1
INT
C
C
R
ELEN
D1
1N4148
V
DD
4
3
6
7
2
DMOS
DMOS
PMOS
PMOS
BRIDGE
C1
0.1
μ
F
R
OSC
681k
C2
1nF
R
OSC
SP4439
OSC
R
D
1.1k
R
C
9
1
R
D
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