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参数资料
| 型号： | G569CS8U |
| 厂商： | Global Mixed-mode Technology Inc. |
| 英文描述： | CD-RW Laser Diode Current Driver |
| 中文描述： | CD - RW激光二极管电流驱动器 |
| 文件页数： | 1/11页 |
| 文件大小： | 185K |
| 代理商： | G569CS8U |
Ver: 1.0
Oct 02, 2000
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G569C
Global Mixed-mode Technology Inc.
CD-RW Laser Diode Current Driver
Features
Single +5V supply
Laser diode read current driver
Laser diode write current driver
Laser diode Erase current driver
Deltap circuit to control write current
FSA circuit to integrate photo diode current
Cagain circuit to convert Vcagain into current
Dalpha circuit to perform voltage subtraction
and limiting
3-wire interface to control internal DAC
A build-in OP-AMP
48-pin SSOP package
Applications
CD-RW Drive
General Description
The G569C is a single chip solution for the various
functions relating to laser diode operation in a CD-RW
drive. The G569C integrates nine functional blocks in
one chip. It has five voltage-to-current converters, one
current-to-voltage converters which is called FSA, one
OP-AMP, one eight-channels D/A converter, and one
voltage subtracter with output clamping capability
called Dalpha.
Three of the five V-to-I converters provide the laser
diode currents for Read, Write, and Erase operations,
respectively; another one of the V-I converters
provides the Cagain current; and the other one
provides Deltap current which can selectively shunt a
certain amount of laser diode current for write
operation. For the Write and Erase operations, the
voltage to current conversion ratio can be adjusted
using an external or internal DAC resistor array. The
FSA circuit performs integration on the output current
of an external photo diode, and sample-and-hold the
peak voltage. It is used to monitor the laser diode
power. The internal eight-channel D/A converter is
used to provide the input voltage for above functional
blocks. The G569C is available in a 48-pin SSOP
surface-mount package.
Pin configuration
Ordering Information
ORDER
NUMBER
ORDER NUMBER
(Pb free)
TEMP.
RANGE
PACKAGE
G569CS8U
G569CS8Uf
0°C to 85°C
SSOP-48
Note: S8: SSOP-48
U: Tape & Reel
PWMIN
IW_IN
LS_DELTA
WDB
LS_WRITE
PWRITE
LD
DI
CLK
VSS
VOUT
VI-
FSOF
VI+
VDD
FSWS
FSCLR
FSW
IFSA
FSR
FSRS
VDD
SELN4_IN
PR_I
LS_READ
IR
TST1
PWO
DALPHA
PWO_I
PWB
PWMAX
VSS
EDB
PERASE
LS_ERASE
S2V9
CAGAIN2
CAGS_I
DCAGAIN
RCAGAIN1
CAGAIN
RCAGAIN2
PRFINE
CDR
RECORD
PRCOARSE
/RESET
SSOP-48
G569C
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PWMIN
IW_IN
LS_DELTA
WDB
LS_WRITE
PWRITE
LD
DI
CLK
VSS
VOUT
VI-
FSOF
VI+
VDD
FSWS
FSCLR
FSW
IFSA
FSR
FSRS
VDD
SELN4_IN
PR_I
LS_READ
IR
TST1
PWO
DALPHA
PWO_I
PWB
PWMAX
VSS
EDB
PERASE
LS_ERASE
S2V9
CAGAIN2
CAGS_I
DCAGAIN
RCAGAIN1
CAGAIN
RCAGAIN2
PRFINE
CDR
RECORD
PRCOARSE
/RESET
SSOP-48
G569C
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PDF描述 |
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| G570SA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Dual-Slot PCMCIA/CardBus Power Controller |
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