cxa2640er Sony Electronics, cxa2640er Datasheet
cxa2640er
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cxa2640er Summary of contents
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... 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. 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 • ...
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... IIN1: 100 IIN2, 3: 840 OSC LOGIC CONT RAMP1 Iref (DVD) RAMP2 Iref (CD) RFREQ1 Iref (DVD) RFREQ2 Iref (CD) VBG Vref Vcc_LD – 2 – CXA2640ER 1 GND1 24 GND1 23 OSCEN 22 LDEN2 21 LDEN1 20 GND2 GND2 Vcc_LD 19 LDOUT1 DVD side IIN1: 100 IIN2, 3: 400 18 ...
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... Current setting pin 3. The set current 400 is 1k output through LDOUT1 when LDEN1 = high. The set current 840 is output through LDOUT2 when LDEN2 = high. Supply voltage for control system and modulator system. Supply voltage for timing system and current switch. CXA2640ER ...
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... CXA2640ER Description CD laser drive current output. Enabled when LDEN2 = high. Modulator frequency setting 1. Enabled when LDEN1 = high. Connects resistance to ground. Modulator frequency setting 2. Enabled when LDEN2 = high. Connects resistance to ground. Modulator frequency variation adjustment ...
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... CXA2640ER 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. ...
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... TR — 1.5 — — 1.5 — ns – 6 – CXA2640ER (Vcc = 5V 25°C) Condition LDEN1 LDEN1 ( IOUT1 = 60mA, OSCEN = H, AMP = 40mAp-p LDEN = H, IOUT1 = 60mA, IOUT2 = 120mA (Duty = 25%), IOUT3 = 60mA (Duty = 50%), IOUT = IOUT1 + IOUT2 + IOUT3 LDEN = H, IOUT1 = 30mA, IOUT2 = 120mA (Duty = 25%), ...
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... WLDRES1 — — 700 ns WLDRES2 — — – 7 – CXA2640ER Condition Based on linearity when ILD = 50 to 150mA Vcc = 4.5V 1.75V ILD = 250mA Based on linearity when ILD = 50 to 150mA Vcc = 4.5V 1V ILD = 300mA Frequency for input/output gain of –3dB fmod = 400MHz ...
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... GND2 21 LDEN1 22 LDEN2 23 OSCEN GND1 24 1 6.8k 6.8k 22k 1µ 100 100 – 8 – 1µ GND 11k 11k LDOUT2 1µ 1µ IIN3 9 1µ 8 IIN2 1µ 7 IIN1 1µ 1µ 1µ CXA2640ER 22µ V2 ...
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... The modulator level adjustment can be performed by varying the IIN1 input current value. Modulator OFF 0 IIN1 – Input current [A] Iread = IIN1 104 Modulator amplitude RAMP resistance value [ ] RAMP pin voltage (1.26V) Imod RAMP external resistance value – 9 – Modulator level adjustment IIN1 input current [A] 1/2Imod 200 Iread < 1/2Imod Iread > 1/2Imod CXA2640ER Imod Iread ...
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... LDOUT2 (CD) OFF OFF IIN2 OFF IIN3 OFF IIN2 OFF IIN3 100 IIN1 100 IIN1 + 840 100 IIN1 + 840 100 IIN1 + 840 + 800 IIN3 OFF (inhibit) LDOUT1 LDOUT2 OFF OFF OFF MODOFF MODON (Rfreq2, Ramp2) OFF (inhibit) CXA2640ER IIN2 IIN3 IIN2 ...
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... Timing Chart (DVD side) LDOUT1 LDEN1 LDEN2 OSCEN OUTEN2 xOUTEN2 OUTEN3 xOUTEN3 (CD side) LDOUT2 LDEN1 LDEN2 OSCEN OUTEN2 xOUTEN2 OUTEN3 xOUTEN3 – 11 – CXA2640ER ...
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... Temperature guarantee Thermal resistance ( j-a) when the CXA2640ER 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. ...
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... Tj/((Icc3 – Icc1) • Allowable power dissipation ( (150°C – Ambient temperature)/ j-a D • Maximum operating temperature (150°C – Tj) 75°C Vcc – Iop Vop [ – 13 – Pin voltage measurement V CC point 1M 23 10V OSCEN GND CXA2640ER ...
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... IIN2/3 input current vs. CD/DVD output current characteristics Vcc = 5V, resistance load CD DVD 0 0 100 200 300 400 500 600 IIN2/3 input current [µA] RFREQ = 12k (approximately 390MHz) RFREQ_COMP = 22k , IIN1 = 642µ RAMP resistance value [k ] CXA2640ER 700 800 10 12 ...
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... Timing Control Logic LVDS/LVPECL 100 0.1µ 0.1µ 10k 10k – 15 – 100 GND1 23 OSCEN 22 LDEN2 21 LDEN1 20 GND2 19 LDOUT1 LD1 17 18 1µ 6.2k 6.2k CXA2640ER ...
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... Timing Control Logic CMOS 3.3/TTL 0.1µ 0.1µ 10k 10k – 16 – GND1 23 OSCEN 22 LDEN2 21 LDEN1 20 GND2 19 LDOUT1 LD1 17 18 1µ 6.2k 6.2k CXA2640ER ...
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... 0.4 0 0.1 S A A-B C PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT VQFN-24P-04 LEAD MATERIAL PACKAGE MASS SPEC. COPPER ALLOY Sn-Bi Bi:1-4wt% 5-18 m – 17 – 0.6 ± 0.1 2.0 S 1.0 Solder Plating 0.13 ± 0.025 + 0.09 0.14 – 0.03 TERMINAL SECTION EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.04g Sony Corporation CXA2640ER ...