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PDF CXA2640ER Data sheet ( Hoja de datos )
| Número de pieza | CXA2640ER | |
| Descripción | 3-Channel 2-LD Driver | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA2640ER
3-Channel 2-LD Driver for Optical Disc Drive
Description
The CXA2640ER is a laser driver IC capable of
driving two high output lasers (CD/DVD) for writeable
optical discs.
24 pin VQFN (Plastic)
Features
• CD maximum drive current: 300mA
DVD maximum drive current: 250mA
• Capable of generating three-value write waveform
through control of one read channel and two write
channels
• Rise/Fall times = 1ns
• Read Channel: ×100
• Write Channel: ×840 (CD), ×400 (DVD)
• Read channel has extensive low-noise design
1.5nA/√Hz (@20MHz, ILD = 35mA, IMOD = 40mAp-p)
• Internal high frequency modulator circuit
Frequency variable range: 200 to 600MHz
Maximum modulator current amplitude: 100mAp-p
Can be set separately for CD and DVD.
• Timing input for generating write waveform can be
adapted to both differential input (LVDS/LVPECL)
and single end input (3.3V CMOS/TTL).
• Single 5V power supply
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage Vcc 5.5
• Storage temperature Tstg –65 to +150
• Allowable power dissipation
PD TBD
V
°C
Operating Conditions
• Supply voltage
Vcc
• Operating temperature Topr
4.5 to 5.5
–10 to +75
V
°C
Applications
CD-R, CD-RW, DVD-R, DVD+RW, DVD-RW and
DVD-RAM for high-speed writeable optical disc
drives
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E02223A3Z
1 page  
CXA2640ER
Pin
No.
Symbol
Pin voltage
I/O
DC AC
Equivalent circuit
21 LDEN1
22 LDEN2
I——
I——
21
22
300
200k
Description
DVD output control. (positive
logic)
When LDEN1 = high, the
current set at IIN1 is output
through LDOUT1.
CD output control. (positive
logic)
When LDEN2 = high, the
current set at IIN1 is output
through LDOUT2.
23 OSCEN
I——
300
23
24 GND1
——
—
—
Modulator control. (positive
logic)
Outputs modulator waveform
when OSCEN = high.
Ground.
–5–
5 Page 
2. Timing Chart
(DVD side)
LDOUT1
LDEN1
LDEN2
OSCEN
OUTEN2
xOUTEN2
OUTEN3
xOUTEN3
(CD side)
LDOUT2
LDEN1
LDEN2
OSCEN
OUTEN2
xOUTEN2
OUTEN3
xOUTEN3
– 11 –
CXA2640ER
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet CXA2640ER.PDF ] | |
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