View T0800-TNQ_1320797.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Features
* * * * * * * * * * * * *
Current-controlled Output Current Source with 5 Input Channels 2 Selectable Outputs for Grounded Laser Diodes Output Current per Channel up to 200 mA Total Output Current up to 250 mA Rise Time 1.0 ns/Fall Time 1.1 ns On-chip RF Oscillator Control of 2 Different Frequencies and Swings by Use of 4 External Resistors Oscillator Frequency Range from 200 MHz to 600 MHz Oscillator Swing to 100 mA Single 5-V Power Supply Common Enable/Disable Input TTL/CMOS Control Signals Small SSO24 Package and QFN28 Package
5-Channel Laser Driver with RF Oscillator and 2 Outputs T0800
Applications
* Combo Drives (DVD + CD-RW) * DVD-RAM with CD-RW Capability * DVD-RW with CD-RW Capability
1. Description
The T0800 is a laser diode driver for the operation of two different, grounded laser diodes for DVD-RAM (650 nm) and CD-RW (780 nm). It includes five channels for five different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level. The channels 2 to 5 are provided as write channels with very fast switching speeds. When a low signal is applied to the NE pins, write current pulses are enabled. All channels are summed together and switched to one of the two outputs IOUTA or IOUTB by the select input SELA. Each channel can contribute up to 200 mA to the total output current of up to 250 mA. A total gain of 100 is provided between each reference current input and the selected output. Although the reference inputs are current inputs, voltage control is possible by using external resistors. An on-chip RF oscillator reduces laser mode hopping noise during read mode. Frequency and swing can be set independently for the two selectable outputs with two pairs of resistors. Oscillation is enabled by a high signal at the ENOSC pin. Complete output current and oscillator switch-off is achieved by a low signal at the ENABLE input.
Rev. 4503D-DVD-02/05
2. Pin Configuration
Figure 2-1. Pinning SSO24
IR I2 I3 I4 I5 RFA RFB NE2 NE3 NE4 NE5 ENABLE 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC1 VCC2 IOUTA IOUTA GND RSA RSB IOUTB IOUTB SELA ENOSC VCC2
Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16/17 18 19 20 21/22 23 24
Pin Description: SSO24
Symbol IR I2 I3 I4 I5 RFA RFB NE2 NE3 NE4 NE5 ENABLE VCC2 ENOSC SELA IOUTB RSB RSA GND IOUTA VCC2 VCC1 Type Analog Analog Analog Analog Analog Analog Analog Digital Digital Digital Digital Digital Supply Digital Digital Analog Analog Analog Supply Analog Supply Supply Function Input current, bias voltage approximately GND Input current, bias voltage approximately GND Input current, bias voltage approximately GND Input current, bias voltage approximately GND Input current, bias voltage approximately GND External resistor to GND sets frequency of oscillator A External resistor to GND sets frequency of oscillator B Digital control of channel 2 (low active) Digital control of channel 3 (low active) Digital control of channel 4 (low active) Digital control of channel 5 (low active) Enables output current (high active) +5 V power supply for IOUT Enables RF oscillator (high active) High: selects IOUTA, RFA, RSA Low: selects IOUTB, RFB, RSB Output current source B for laser diode External resistor to GND sets swing of oscillator B External resistor to GND sets swing of oscillator A Ground Output current source A for laser diode +5 V power supply for IOUT +5 V power supply for circuit
2
T0800
4503D-DVD-02/05
T0800
Figure 2-2. Pinning QFN28
I3 I2 IR NC VCC1 VCC2 VCC2 I4 I5 RFA RFB GND NE2 NE3 1 2 3 4 5 6 7 28 27 26 25 24 23 22 21 20 19 18 17 16 15 8 9 10 11 12 13 14 NE4 NE5 ENABLE VCC2 VCC2 ENOSC SELA IOUTA IOUTA GND RSA RSB IOUTB IOUTB
Table 2-2.
Pin 1 2 3 4 5 6 7 8 9 10 11, 12 13 14 15 16 17 18 19 20 21 22, 23 24 25 26 27 28 Paddle
Pin Description: QFN28
Symbol I4 I5 RFA RFB GND NE2 NE3 NE4 NE5 ENABLE VCC2 ENOSC SELA IOUTB IOUTB RSB RSA GND IOUTA IOUTA VCC2 VCC1 NC IR I2 I3 - Type Analog Analog Analog Analog Supply Digital Digital Digital Digital Digital Supply Digital Digital Analog Analog Analog Analog Supply Analog Analog Supply Supply - Analog Analog Analog - Function Input current, bias voltage approximately GND Input current, bias voltage approximately GND External resistor to GND sets frequency of oscillator A External resistor to GND sets frequency of oscillator B Ground Digital control of channel 2 (low active) Digital control of channel 3 (low active) Digital control of channel 4 (low active) Digital control of channel 5 (low active) Enables output current (high active) +5 V power supply IOUT Enables RF oscillator (high active) High: selects IOUTA, RFA, RSA Low: selects IOUTB, RFB, RSB Output current source B for laser diode Output current source B for laser diode External resistor to GND sets swing of oscillator B External resistor to GND sets swing of oscillator A Ground Output current source A for laser diode Output current source A for laser diode +5 V power supply IOUT +5 V power supply circuit Not connected Input current, bias voltage approximately GND Input current, bias voltage approximately GND Input current, bias voltage approximately GND Should be connected with ground
3
4503D-DVD-02/05
Figure 2-3.
Block Diagram
I5 NE5 I4 NE4 I3 NE3 Channel 5
Channel 4
Channel 3 IOUTA IOUTB Channel 2
I2 NE2
IR ENABLE
Read channel
ENOSC
RF oscillator
RFA RFB RSA RSB
SELA
4
T0800
4503D-DVD-02/05
T0800
3. Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameter Supply voltage Input voltage at IR, I2, I3, I4, I5 Input voltage at NE2, NE3, NE4, NE5, ENOSC Output voltage Power dissipation Junction temperature Storage temperature range Notes: 1. RthJA 115 K/W, Tamb = 70C 2. RthJA 115 K/W, Tamb = 25C Symbol VCC VIN1 VIN2 VOUT Ptot TJ Tstg Value -0.5 to +6.0 -0.5 to +0.5 -0.5 to VCC +0.5 -0.5 to VCC -1 0.7
(1)
Unit V V V V W C C
to 1
(2)
150 -65 to +125
4. Thermal Resistance
Parameter Junction ambient Note: Symbol RthJA Value(1) 115 (SSO24) 35 (QFN28) Unit K/W K/W
1. Measured with multi-layer test board (JEDEC standard JESD51-7)
5. Recommended Operating Conditions
Parameter Supply voltage range Input current External resistor to GND to set oscillator frequency External resistor to GND to set oscillator swing Operating temperature range Symbol VCC IIR, II2, II3, II4, II5 RFA, RFB RSA, RSB Tamb Value 4.5 to 5.5 < 2.5 >3 > 100 0 to +70 Unit V mA k C
5
4503D-DVD-02/05
6. Electrical Characteristics
VCC = 5 V, Tamb = 25C, ENABLE = High, NE2 = NE3 = NE4 = NE5 = High, ENOSC = Low, unless otherwise specified No. 1 1.1 Parameters Power Supply Supply current, power down Supply current, read mode, oscillator disabled Supply current, read mode, oscillator enabled, output A selected ENABLE = Low, NE2 = NE3 = NE4 = NE5 = Low IIR = II2 = II3 = II4 = II5 = 500 A IIR = II2 = II3 = II4 = II5 = 500 A, ENOSC = High, RS = 560 , RF = 7.5 k, SELA = High IIR = II2 = II3 = II4 = II5 = 500 A, NE2 = NE3 = NE4 = NE5 = Low IIR = II2 = II3 = II4 = II5 = 0 A 11,12, 22, 23, 24 11,12, 22, 23, 24 ICCPD2 0.5 mA A Test Conditions Pin(1) Symbol Min. Typ. Max. Unit Type*
1.2
ICCR1
115
mA
A
1.3
11,12, 22, 23, 24
ICCR2
120
mA
A
1.4
Supply current, write mode Supply current, input off Digital Inputs NE2/NE3/NE4/NE5 low voltage NE2/NE3/NE4/NE5 high voltage SELA low voltage SELA high voltage ENABLE low voltage ENABLE high voltage ENOSC low voltage ENOSC high voltage
11,12, 22, 23, 24 11,12, 22, 23, 24
ICCW
320
mA
A
1.5 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 Note:
ICCoff
18
mA
A
6, 7, 8, 9 6, 7, 8, 9 14 14 10 10 13 13
VNELO VNEHI VSELALO VSELAHI VENLO VENHI VEOLO VEOHI 2.0 2.0 2.0 2.0
1.1
V V
A A A A A A A A
0.5 0.5 0.5
V V V V V V
Currents at Digital Inputs NE2/NE3/NE4/NE5 low current NE2/NE3/NE4/NE5 high current SELA low current SELA high current ENABLE low current ENABLE high current ENOSC low current ENOSC high current NE = 0 V NE = 5 V SELA = 0 V SELA = 5 V ENABLE = 0 V ENABLE = 5 V ENOSC = 0 V ENOSC = 5 V 6, 7, 8, 9 6, 7, 8, 9 14 14 10 10 13 13 INELO INEHI ISELALO ISELAHI IENLO IENHI IEOLO IEOHI -100 800 -150 100 -45 150 -300 800 A A A A A A A A A A A A A A A A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 1. Related to QFN28 Package
6
T0800
4503D-DVD-02/05
T0800
7. Electrical Characteristics: Laser Amplifier
VCC = 5 V, Tamb = 25C, ENABLE = High, unless otherwise specified No. 4 4.1 4.2 4.3 4.5 4.6 4.7 4.8 4.9 4.10 Parameters Test Conditions Pin 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 RIN is to GND Temperature stabilized ENABLE = Low NE2 = NE3 = NE4 = NE5 = High NE2 = NE3 = NE4 = NE5 = Low, IIR = II2 = II3 = II4 = II5 = 0 A IOUT = 40 mA, VCC = 5 V 10%, read-only IOUT = 80 mA, 40 mA read + 40 mA write, VCC = 5 V 10% IOUT = 40 mA, ENOSC = Low IOUT = 40 mA, read only IOUT = 80 mA, 40 mA read + 40 mA write 1, 2, 26, 27, 28 6, 7, 8, 9 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 Symbol Min. Typ. Max. Unit Type* Outputs IOUTA and IOUTB Best fit current gain Best fit current offset Output current linearity Output current per channel Total output current IIN input impedance NE threshold Output off current 1 Output off current 2 Any channel(1) Any channel(1) Any channel(1) Output is sourcing GAIN IOS ILIN IOUTR IOUT RIN VTH IOFF1 IOFF2 90 -8 -3 200 250 170 220 1.68 1 1 270 100 130 +4 +3 mA/mA mA % mA mA V mA mA A A A A A A C A A
4.11
Output off current 3
IOFF3
5
mA
A
4.12
IOUT supply sensitivity, read mode IOUT supply sensitivity, write mode IOUT current output noise IOUT temperature sensitivity, read mode IOUT temperature sensitivity, write mode
15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21
VSER
-5
1
%V
A
4.13
VSEW INOO TSER TSEW
-6
0
%V nA/ rt-Hz ppm/C ppm/C
A
4.14 4.15 4.16
3 -100 -300
C C C
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Note: 1. Linearity of the amplifier is calculated using a best fit method at three operating points of IOUT at 20 mA, 40 mA, and 60 mA, IOUT = (IIN x GAIN) + IOS
7
4503D-DVD-02/05
8. Electrical Characteristics
VCC = 5 V, IOUT = 40 mA DC with 40-mA pulse, Tamb = 25C, unless otherwise specified No. 5 5.1 5.2 5.3 5.4 5.5 5.6 Parameters Test Conditions IOUT = 40 mA (read) +40 mA (10%-90%)(1) IOUT = 40 mA (read) +40 mA (10%-90%)(1) IOUT = 40 mA (read) + 40 mA(1) NE 50% High-Low to IOUT at 50% of final value NE 50% Low-High to IOUT at 50% of final value ENABLE 50% High-Low to IOUT at 50% of final value ENABLE 50% Low-High to IOUT at 50% of final value ENOSC 50% Low-High to IOUT at 50% of final value ENOSC 50% High-Low to IOUT at 50% of final value SELA Low-High 50% to IOUT at 50% of final value SELA High-Low 50% to IOUT at 50% of final value IOUT = 50 mA, all channels, -3 dB value Pin 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 15, 16, 20, 21 Symbol Min. Typ. Max. Unit Type* Outputs IOUTA and IOUTB, AC Performance Write rise time Write fall time Output current overshoot IOUT ON prop delay IOFF OFF prop delay Disable time tRISE tFALL OS tON tOFF tDIS 1.0 1.1 5 2.0 2.0 20 3.0 3.0 ns ns % ns ns ns C C C C C C
5.7
Enable time Disable time oscillator Enable time oscillator SELA delay SELA delay Amplifier bandwidth Oscillator Oscillator frequency Oscillator temperature coefficient Disable time oscillator Enable time oscillator
tEN
20
ns
C
5.8
TDISO
4
ns
C
5.9 5.10 5.11 5.12 6 6.1 6.2
TENO TSAH TSAL BWLCA
2 TBD TBD 20
ns ns ns MHz
C C C C
RF = 4.7 k RF = 4.7 k ENOSC 50% High-Low to IOUT, at 10%/90% of final value ENOSC 50% Low-High to IOUT, at 10%/90% of final value
FOSC TCOSC
380
470 -150
560
MHz ppm/C
A C
6.3
TDISO
4
ns
C
6.4
TENO
2
ns
C
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
8
T0800
4503D-DVD-02/05
T0800
9. Application Information Oscillator
Figure 9-1. Frequency versus Resistor RFA and RFB (RS = 525 )
550 500
Frequency (MHz)
450 400 350 300 250 200 4.0 5.0 6.0 7.0 8.0 9.0 10.0
RFA, RFB (k)
Figure 9-2.
Swing versus Resistor RSA and RSB (RF = 7.82 k)
120
100
Swing (mA pk/pk)
80
60
40
20
0 0.0 200.0 400.0 600.0 800.0 1000.0 1200.0
RSA, RSB ()
Figure 9-3.
Frequency Dependency of Swing
60
50
Swing (mA pk/pk)
40
30
20
10
0 200.0
250.0
300.0
350.0
400.0
450.0
500.0
Frequency (MHz)
9
4503D-DVD-02/05
Figure 9-4.
Transfer Characteristic of all Channels (Gain = 111)
350 300 250 200 150 100 50 0 0.0 500.0 1000.0 1500.0 2000.0 2500.0 3000.0
IOUT (mA)
IR/I2/I3/I4/I5 (mA)
Figure 9-5.
Output Characteristic (Voltage Compliance) R(IOUT) = 5.8
350 300 250
IOUT (mA)
200 150 100 50 0 0.0 1.0 2.0 3.0 4.0 5.0
VCC - V(IOUT)/V
Figure 9-6.
Output Pulse, Read: 50 mA, Write: 250 mA pk-pk
10
T0800
4503D-DVD-02/05
T0800
Figure 9-7. Timing Diagram of IOUT
ENABLE NE2 NE3 NE4 NE5 tON tON IOUT tON tEN tr tr tr tON tr tf tf tf tf tOFF tOFF tOFF tOFF tDIS
Figure 9-8.
Application Circuit
A n a l o g D i g i t a l
VCC
IR I2 I3 I4 I5 RFA RFB NE2 NE3 NE4 NE5 ENABLE 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC1 VCC2 IOUTA IOUTA GND RSA RSB IOUTB IOUTB SELA ENOSC VCC2
LD
LD
VCC
11
4503D-DVD-02/05
10. Ordering Information
Extended Type Number T0800-TNQ T0800-PJQ Package SSO24 QFN28 Remarks Taped and reeled Taped and reeled
11. Package Information
Package SSO24
Dimensions in mm
8.05 7.80 5.7 5.3 4.5 4.3
1.30 0.25 0.65 7.15 24 13 0.15 0.05 0.15 6.6 6.3
technical drawings according to DIN specifications
1
12
12
T0800
4503D-DVD-02/05
T0800
13
4503D-DVD-02/05
Atmel Corporation
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600
Atmel Operations
Memory
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314
RF/Automotive
Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759
Regional Headquarters
Europe
Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500
Microcontrollers
2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60
Biometrics/Imaging/Hi-Rel MPU/ High Speed Converters/RF Datacom
Avenue de Rochepleine BP 123 38521 Saint-Egreve Cedex, France Tel: (33) 4-76-58-30-00 Fax: (33) 4-76-58-34-80
Asia
Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369
ASIC/ASSP/Smart Cards
Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, CO 80906, USA Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride G75 0QR, Scotland Tel: (44) 1355-803-000 Fax: (44) 1355-242-743
Japan
9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581
Literature Requests
www.atmel.com/literature
Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL'S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL'S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Atmel's products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
(c) Atmel Corporation 2005. All rights reserved. Atmel (R), logo and combinations thereof, and others, are registered trademarks, and Everywhere You Are SM and others are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.
Printed on recycled paper.
4503D-DVD-02/05

▲Up To Search▲

Price & Availability of T0800-TNQ

	To Download T0800-TNQ Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .