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PDF ( 数据手册 , 数据表 ) U8600B

零件编号 U8600B
描述 Laser Controller
制造商 TEMIC Semiconductors
LOGO TEMIC Semiconductors LOGO 


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U8600B 数据手册, 描述, 功能
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Laser Controller
U8600B
Description
The U8600B is a monolithic integrated circuit using
TEMIC’s advanced UHF technology. The IC is a very
high-speed, mixed–signal laser driver circuit for
re-writable optical systems.
It comprises a servo amplifier to drive the laser diode, a
high-frequency modulator for noise reduction, power and
pulse-width generators as well as several operation con-
trol and safety functions.
Features
D Single + 5 V power supply
D Data transfer rates up to 16 Mb/s
D Servo system
– High bandwidth: 100 MHz
– High dc gain: 110 dB
– High LD drive current: typ. 100 mA, max. 180 mA
– High slew rate: 5 ns rise/ fall time
– Servo gain adjustable
D Noise reduction by servo loop and weak high-
frequency modulation
D On-chip generation of power levels for read, erase,
and write operations
D On-chip generation of write and off-pulse widths:
15 to 90 ns, 5 ns steps
D Digital control of power and pulse parameters via a
serial 3-wire interface
D Basic power level adjustable
D Supervision of power supply, laser current and laser
power
D Laser shutdown to prevent laser damage and data loss
Package:
44-lead shrinked small-outline IC (SSO44)
Thermal resistance: RthJC = 22°C/W
Block Diagram
40 41
GND GADJ
42
FSC
30
CC
11657
38 PDK
39 IRef
VMON
44
43 EXTM
19 WDATA
18 WGATE
4 OPEENB
VDM
23
16 DCLK
1 ISET
Servo amplifier
iref
Buffer
Pulse-width
generators
error
signal
LD off
current
limit
Operation
control
unit
HF
Mod.
WGATE
DCLK
read erase write
Power
generators
Serial interface
LDK
27, 28
HFV
26
HFE 25
EXTC
24
PFAIL
LPFAIL
VRef
21
22
2
LDENB
17
SCLOCK
SDATA
SENB
7
6
5
VCCA VCCL
GND
VCCD
VCCS
37
29 9–14,
31–36
15
8
T1 T2
3 20
digital signals
analog signals
Figure 1.
TELEFUNKEN Semiconductors
Rev. A1, 30-Aug-96
Preliminary Information
1 (12)







U8600B pdf, 数据表
U8600Bwww.DataSheet4U.com
Timing Diagrams
LDENB
WGATE
Tpon Tdwg
Read level
I(LDK)
Figure 3. LDENB
Thlde Tpof
12506
LDENB
WGATE
Delay line
operation
System
operation
Tadj1
Twrt Tadj2
1st delay line
adjustment
Reading
Pulse generation
Writing
Figure 4. WGATE
Following
adjustments
Header
reading
12507
WGATE
Ted
Tdw Twpl Twph
WDATA
Write level
Erase level
I(LDK) Read level
Te Tw
Write pulse
Off pulse
Figure 5. WDATA
Thwg
12508
8 (12)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A1, 30-Aug-96














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