njw4702se8 New Japan Radio Co.,Ltd, njw4702se8 Datasheet

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njw4702se8

Manufacturer Part Number
njw4702se8
Description
3ch Laser Diode Driver
Manufacturer
New Japan Radio Co.,Ltd
Datasheet
GENERAL DESCRIPTION
FEATURES
BLOCK DIAGRAM
optical power levels. Reference inputs are voltage input, and
voltage control is possible without external resistors. An on-chip RF
oscillator is provided to reduce laser mode noise during read mode.
Oscillation frequency and oscillation amplitude are defined by two
external resistors.
laser diode for CD-R and CD-RW drivers.
Ver.1
It includes three channels current amplifiers for three different
NJW4702 is a laser diode driver for the operation of a grounded
Operating Voltage
On-chip RF Oscillator
Rise-time/Fall-time
Maximum Output Current 250mA typ.
Bi-CMOS Technology
Package Outline
VCC2
VINR
GND
GND
14
15
13
16
RFREQ
IOUT
12
1
H:ON
4.5V to 5.5V
200MHz to 500MHz
L:ON
1.0ns typ.
PCSP16(3.5mm 0.65mm pitch)
3ch Laser Diode Driver
GND
VIN2
11
2
L:ON
RAMP
VIN3
10
3
OSC
ENABLE
OUTEN2
9
4
BIAS
H:ON
8
7
6
5
PACKAGE OUTLINE
OSCEN
VCC1
GND
OUTEN3
NJW4702SE8
NJW4702
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njw4702se8 Summary of contents

Page 1

... Package Outline BLOCK DIAGRAM IOUT 12 VCC2 13 H:ON GND 14 GND 15 VINR 16 1 RFREQ Ver.1 3ch Laser Diode Driver 1.0ns typ. PCSP16(3.5mm 0.65mm pitch) GND RAMP ENABLE L:ON L:ON OSC BIAS VIN2 VIN3 OUTEN2 NJW4702 PACKAGE OUTLINE NJW4702SE8 H:ON OSCEN 8 VCC1 7 GND 6 OUTEN3 ...

Page 2

NJW4702 ABSOLUTE MAXUIMUM RATING (Ta=25 C) PARAMETERS Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range *EIA/JEDEC STANDARD Test Board(76.2x114.3x1.6mm,4layers,FR-4)mounting RECOMMENDED OPERATING CONDITION (Ta=25 C) PARAMETERS SYMBOL Operating Voltage Vopr ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS (Vcc=5.0V,ENABLE=H,OUTEN=H,OSCEN=L, H:5V,L:GND,2V to Iout, Ta=25 ...

Page 3

Laser Amp AC CHARACTERISTICS PARAMETERS SYMBOL Enable Time Ten Disable Time Tdis ON Time Ton OFF Time Toff Rise Time Tr Fall Time Toff Over Shoot OS Oscillator Frequency fOSC Oscillator Temperature TcOSC Rfreq=3.6k Coefficient Output Current Noise Ino Iout ...

Page 4

NJW4702 TEST CIRCUIT 3.6kohm APPLICATION CIRCUIT DAC CMOS Ver.1 GND GND VINR VCC2 RFREQ IOUT GND VIN2 VIN3 RAMP ENABLE OUTEN2 OSCEN OUTEN3 GND VCC1 GND GND VCC VINR 2 RFREQ IOUT GND VIN2 RAMP VIN3 OUTEN2 ENABLE OUTEN3 OSCEN ...

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