cxa2697er Sony Electronics, cxa2697er Datasheet

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cxa2697er

Manufacturer Part Number
cxa2697er
Description
5-channel 2-ld Driver For Optical Disc Drive
Manufacturer
Sony Electronics
Datasheet
Description
to DVD 12 and capable of driving two high output
lasers (CD/DVD) for writable optical discs.
Features
• CD write channel maximum drive current: 300mA
• CD total maximum drive current: 370mA
• DVD write channel maximum drive current: 270mA
• DVD total maximum drive current: 360mA
• Capable of generating five-value recording
• Rise/Fall times = 1ns
• Read Channel: 125
• Write Channel: 470
• Read Channel has extensive low-noise design
• High frequency modulator circuit
• Frequency variable range: 200 to 600MHz
• Modulator amplitude can be set separately for CD
• DVD modulator amplitude switching function
• Timing input for generating recording waveform
Applications
Structure
The CXA2697ER is a laser driver IC corresponded
waveform through control of five channels
1.5nA/ Hz (@20MHz, I
and DVD.
can be adapted to both differential input (LVDS)
and single-end input (3.3V CMOS/TTL).
CD-R, CD-RW, DVD-R, DVD-RW, DVD+R/RW,
DVD-ROM and DVD-RAM for high-speed writable
optical disc drives
Bi-CMOS IC
5-Channel 2-LD Driver for Optical Disc Drive
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.
(V
(V
(V
(V
CC
CC
CC
CC
= 3V, V
= 3.3V, V
= 3V, V
= 3.3V, V
CC
CC
LD
CC
CC
_LD = 4.5V, VOP = 2.5V)
_LD = 4.5V, VOP = 3V)
= 35mA, Imod = 20mAp-p)
_LD = 5V, VOP = 2.5V)
_LD = 5V, VOP = 3V)
– 1 –
Absolute Maximum Ratings
• Supply voltage
• Storage temperature
• Allowable power dissipation
Operating Conditions
• Supply voltage
• Operating temperature Topr
CXA2697ER
32 pin VQFN (Plastic)
V
V
Tstg
P
V
V
D
CC
CC
CC
CC
_LD
_LD 4.5 to 5.5
Preliminary
–65 to +150
–10 to +75
3 to 3.6
TBD
3.6
5.5
PE03819-PS
mW
°C
°C
V
V
V
V

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cxa2697er Summary of contents

Page 1

... Driver for Optical Disc Drive Description The CXA2697ER is a laser driver IC corresponded to DVD 12 and capable of driving two high output lasers (CD/DVD) for writable optical discs. Features • CD write channel maximum drive current: 300mA (V = 3V, V _LD = 4.5V, VOP = 2.5V • CD total maximum drive current: 370mA ( ...

Page 2

... CC_ R FREQ COMP 14 CD Side IIN1, 2: 125 IIN3 FREQ2 15 470 R FREQ1 CONT Iref Iref Iref Iref Vref OSC – 2 – CXA2697ER OUTEN3 LDEN OSC 31 xOUTEN3 30 OUTEN4 29 xOUTEN4 28 OUTEN5 27 xOUTEN5 26 OUTENREF 25 VBG 23 24 ...

Page 3

... Modulator control signal. (positive logic) When OSCEN = high, the modulator waveform is output. CD output control. (positive logic) 500 6 7 200k DVD output control. (positive logic) — Ground. DVD laser drive current output. Enabled when LDEN 1 = high and 9 LDEN2 = low. – 3 – CXA2697ER Description ...

Page 4

... CD laser drive current output. Enabled when LDEN1 = low and 17 LDEN2 = high. Supply voltage for timing system and — current switch. Supply voltage for control system and — modulator system. Current setting 5. 20 500 Current setting Current setting 3. – 4 – CXA2697ER Description ...

Page 5

... IIN2 I — 24 IIN1 I — 25 VBG O 1.26V 26 OUTENREF O 1/2V CC Equivalent circuit Current setting 2. 100 23 24 700 Current setting 300 Internal reference voltage decoupling. 1k 300 Reference voltage output for current 26 control signal. 500 Connects decoupling capacitance to ground. 300 – 5 – CXA2697ER Description ...

Page 6

... NOISE1 — 1.5 — nA/ Hz NOISE2 — 1.5 — nA/ Hz – 6 – CXA2697ER _LD = 5V 25°C) CC Conditions LDEN1 (LDEN1 = H, LDEN2 = L) or (LDEN1 = L, LDEN2 = H) LDEN1 = H, IOUT1 = 60mA, OSCEN = H, AMP = 20mAp-p LDEN = H, IOUT1 = 60mA, IOUT3 = 240mA (Duty = 25%), IOUT4 = 120mA (Duty = 50%), IOUT = IOUT1 + IOUT3 + ...

Page 7

... GACCU –5 — FBAND 7 — — MHz – 7 – CXA2697ER Conditions 100mA pulse LD Settling 10 to 90% (resistance load 100 to 50mA pulse LD Settling 10 to 90% (resistance load) Based on linearity when 150mA 30mA) READ V _LD = 4.5V 3V ...

Page 8

... WLDRES1 — — 1 µs WLDRES2 — — – 8 – CXA2697ER Condition fmod = 400MHz fmod = 400MHz fmod = 400MHz fmod = 300MHz fmod = 400MHz fmod = 300MHz, RAMP = 10k Time to reach 90% of Read set current (same condition as current consumption 3) Time to reach 10% of Read set current (same condition ...

Page 9

... R FREQ COMP 11k 15 R FREQ2 11k R FREQ1 1µ 1µ – 9 – CXA2697ER V V _LD CC CC 100 22µ 1µ 22µ 1 GND GND 32 OUTEN3 100 xOUTEN3 31 30 OUTEN4 100 xOUTEN4 29 OUTEN5 28 100 27 xOUTEN5 1µ ...

Page 10

... The modulator level adjustment can be performed by varying the IIN1 input current value. Modulator OFF 0 IIN1 – Input current [A] Iread = IIN1 125 Modulator amplitude RAMP resistance [ ] RAMP pin voltage (1.26V) 200 Imod RAMP external resistance – 10 – CXA2697ER Modulator level adjustment Imod Iread IIN1 input current [A] 1/2Imod Iread < 1/2Imod Iread >1/2Imod ...

Page 11

... OFF OFF OFF (INHIBIT) – 11 – CXA2697ER LDOUT2 (CD) OFF OFF OFF OFF OFF OFF OFF IIN1 125 IIN2 125 IIN1 125 + IIN3 470 IIN1 125 + IIN4 470 IIN1 125 + IIN5 470 IIN1 125 + (IIN3 + IIN4 + IIN5) 470 ...

Page 12

... LDEN2 OSCEN OSCMOD xOUTEN2 xOUTEN3 xOUTEN4 xOUTEN5 H: Imod small LDOUT1 LDEN1 LDEN2 OSCEN OSCMOD xOUTEN2 xOUTEN3 xOUTEN4 xOUTEN5 H: Imod large – 12 – CXA2697ER IIN4 470 IIN3 470 IIN1 125 0mA IIN3 470 IIN1 125 0mA H: RAMP1 (ex: Imod large) L: RAMP11 (ex: Imod small) ...

Page 13

... LDOUT1 LDEN1 LDEN2 OSCEN OSCMOD xOUTEN2 xOUTEN3 xOUTEN4 xOUTEN5 – 13 – Pp5 Pp4 Pp5: IIN5 Pp4: IIN4 470 Pp3 Pp3: IIN3 IIN1 125 IIN2 125 0mA CXA2697ER ...

Page 14

... Temperature guarantee Thermal resistance ( j-a) when the CXA2697ER is mounted on PWB varies according to the set (PWB) and because it is difficult to predict along with the tendency for higher power for power consumption (Po), the following points should be considered when using. ...

Page 15

... IIN3, IIN4, IIN5 input current [µA] RAMP resistance value vs. Modulator waveform peak current characteristics fmod = 400MHz (R FREQ = – 15 – CXA2697ER 700 800 900 R FREQ COMP = 22k RAMP resistance [k ] ...

Page 16

... Mode Control Logic CMOS 3.3/TTL 1µ Voltage DAC – 16 – CXA2697ER 100 OUTEN3 100 xOUTEN3 31 30 OUTEN4 100 29 xOUTEN4 ...

Page 17

... Mode Control Logic CMOS 3.3/TTL 1µ Voltage DAC – 17 – CXA2697ER OUTEN3 31 xOUTEN3 30 OUTEN4 xOUTEN4 29 OUTEN5 28 xOUTEN5 27 1µ ...

Page 18

... JEDEC CODE 32PIN VQFN (PLASTIC) ± 0.8 0.1 0.05 S 0.675 0 0.1 S A-B C Solder Plating PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT LEAD MATERIAL PACKAGE MASS – 18 – CXA2697ER 0.5 0.1 1.4 0.13 ± 0.025 + 0.09 0.14 – 0.03 TERMINAL SECTION EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.04g Sony Corporation ...

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