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PDF ISL58214 Data sheet ( Hoja de datos )
| Número de pieza | ISL58214 | |
| Descripción | Programmable High Speed Single Channel Laser Diode Driver | |
| Fabricantes | Intersil | |
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contact our Technical Support Center at
1-888-INTERSIL or www.intersil.com/tsc
DATASHEET
Programmable High Speed Single Channel Laser Diode
Driver
ISL58214
The ISL58214 is a highly integrated laser diode driver designed
to support a laser beam scanning MEMS projector. Operating
from a single 5V analog supply, it directly drives either a
cathode-grounded laser, or a floating laser whose anode is
connected to a high voltage supply. The ISL58214 is configured
through a serial interface.
An integrated 10-bit high power DAC drives the selected laser.
The desired current level can be scaled by a 10-bit DAC
programmed through a serial interface or the ISLOPE pin to
compensate for ambient brightness, speed variation or laser
sensitivity change.
The CLK pin clocks in the data on the rising edge of CLK. The
LOWP line gates the output off when HIGH.
Features
• Direct drive for floating laser, or cathode grounded. Supports
Red, ‘Green’ or Blue laser
• Up to 1000mA maximum total output (ISRC) with 1.5ns typical
tr/tf
• Up to 500mA maximum total output (ISNK) with 1ns typical
tr/tf.
• 10-bit x 10-bit multiplying DAC output provides 10-bit full scale
adjustment and 10-bit resolution at any full scale output
• ISLOPE input allows compensation for laser slope, ambient
light, and sweep speed variation
• High-speed SPI Serial input works up to 50MHz
• 10-bit video code capable of operating up to 100MHz pixel
data rate
• Integrated programmable HFM (High Frequency Modulation)
for laser stabilization and speckle reduction
• Pb-free (RoHS compliant)
Applications
• RGB laser based projector or pico projector
• Hand held projector
• General purpose laser diode driver
• General purpose high current driver/controller
MICRO
CONTROLLER
+
(FPGA or ASIC)
COLOR (10 Bits)
CLK
LOWP
ENA
ITH
ISLOPE
SEN
SCLK
SDIO
VSO
ISL58214
VB
ISNK
ISRC
Opto-Electronic IC
Photosensor
OEIC
ISL58334
BEAM
SPLITTER
MEMS
SCREEN
RFREQ
RGB LASERS
RSET
* Single output for Red or “Green” or Blue laser
* It is required 3xISL58214 to drive R, G, B lasers
April 14, 2015
FN6944.2
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2010, 2013, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL58214
Absolute Maximum Ratings
VSO, Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
VISNK, Voltage at ISNK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
ISRC, Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mApk
ISNK, Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600mApk
VIH_DATA, Logic Input Voltages . . . . . . . . . . . . . . . . . . . . . .-0.5V to Lesser of
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSO + 0.5V or 3V
VIH, Logic Input Voltages . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VSO + 0.5V
IIN, Current into RSET, RFREQ, IAPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
ESD Rating
Human Body Model (Tested per JESD22-A114E) . . . . . . . . . . . . . . . . 2kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . . 100V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1500V
Latch Up (Tested per JESD-78B; Class 2, Level A) . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
28 Ld QFN Package (Notes 4, 5) . . . . . . . .
37
2.9
TS, Storage Temperature Range. . . . . . . . . . . . . . . . . . . . .-60°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
TA, Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5°C to +85°C
TJ, Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . -5°C to +150°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise
noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications Unless otherwise indicated, all of the following tables are: VSO = VHI = 5V, RSET = 620Ω, RFREQ = 4700Ω,
CLK = 100MHZ, RLOAD-ISRC = 8Ω to GND, RLOAD-ISNK = 10Ω to VHI, Scale DAC = 0x3FF, Reg 1-21 = 0x88, TA = +25°C.
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNIT
DC ELECTRICAL SPECIFICATIONS
VSO (Notes 6, 7)
4.5 5.5
IVSO Supply Current (No Current Output)
25 40
IS, dis
Supply Currents, Disable Mode
10 15
VISNK
Allowable Operating Range of ISNK Pin (see Figure 2)
5.8
VIH_DATA
Input Logic High Level for Data lines (D0-D9)
1.5 3
VIH Input Logic High Level
2.4
VIL Input Logic Low Level
0.8
VOH SDIO, Monitor Output High Level, IL = -5mA
2.4
VOL SDIO, Monitor Output Low Level, IL = 5mA
0.4
IINH Input Current High Level
-1 +1
IINL Input Current High Level, except ENA pin
-1 +1
IINL_ENA
Input Current Low Level for ENA pin
-15 -5
NOTES:
6. Required voltage at the device pins. Allowance must be made for any voltage drop between the power supply and the device.
7. Required voltage also depends on laser diode manufacturer and pickup optical efficiency.
V
mA
mA
V
V
V
V
V
V
µA
µA
µA
Scale DAC (10-bit) DC Specifications Standard conditions unless otherwise noted.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP
DNL-PSCALE Differential Non-Linearity
(Note 8)
-3.5
INL-PSCALE Integral Non-Linearity
At 200h Resistive Load ~0V to ~3V
+40
ZS-PSCALE Zero-Scale Error
(Note 9)
-2 0
VRSET
RSET Pin Voltage
1.03 1.06
NOTE:
8. Differential non-linearity (DNL) is the differential between the measured and ideal 1 LSB change of any two adjacent codes.
MAX
+2.5
+2
1.11
UNIT
LSB
LSB
LSB
V
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FN6944.2
April 14, 2015
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ISL58214
Typical Performance Curves
1200
1000
ISRC vs VHEAD vs SCALE CODE
(REG 1-21 = 88h) (VSO = 4.5V)
800
600 (RSET = 620Ω)
400
3FFh
300h
200h
100h
80h
200 40h
00.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
VHEADROOM (V)
FIGURE 1. ISRC CURRENT vs VSD vs ISCALE_BIAS
4.5
500
(RSET = 620Ω)
400
3FFh
300h
300 200h
200
100h
100 ISNK vs VHEAD vs SCALE CODE
(Reg 1-21 = 8Fh) (VSO = 5.0V)
00 1 2 3 4
VHEADROOM (V)
FIGURE 2. ISNK CURRENT vs VDS vs ISCALE_BIAS
5
1200
1000
RFREQ = 3900Ω
800
RFREQ = 4700Ω
600
400
200
0
32 64 96 128 160 192 224 256
HFMFREQ CODE (DEC)
FIGURE 3. HFM CONTROL
90
80 PHFMON = 0xFF
70
60
PHFMON = 0x80
50
PHFMON = 0x01
40
30
200
400M
600M
800M
1G
HFM FREQUENCY (Hz)
FIGURE 4. HFM OSCILLATOR CURRENT CONSUMPTION
700
600
500
400
300
200
0.0
0.6 1.2 1.8 2.4
IAPC (mA)
FIGURE 5. IOUT/ITH BANDWIDTH vs ITH
3.0
15
13
11
9
7
5
0.0 0.8 1.6 2.4 3.2
ISLOPE (mA)
FIGURE 6. IOUT/ISLOPE BANDWIDTH vs ISLOPE
4.0
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April 14, 2015
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet ISL58214.PDF ] | |
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