19-4720; Rev 2; 8/10
Laser Driver for Projectors
General Description
The MAX3600 laser driver for projectors supports video
imaging with red, blue, and green lasers. Each output
includes a 10-bit video digital-to-analog converter (DAC)
with programmable gain and offset. For operation with
synthetic green lasers, the driver includes a periodic off
function and a fourth output with a random-noise generator.
The MAX3600B/R/G are monochrome drivers for blue,
red, and green lasers. The MAX3600A guarantees
higher full-scale output currents than the MAX3600, and
is recommended for new designs.
Features
S
Integrates Four Current-Output Laser Drivers
S
Compatible with Red, Blue, and Green Lasers
S
10-Bit Video DACs, f
CLK
= 1MHz to 160MHz
S
8-Bit Gain and Offset DACs
S
2ns Output Switching Time
S
Serial Port Control
S
Laser Enable
S
Random-Noise Generator and Periodic Off
S
5mm x 5mm, 40-Pin TQFN Package (0.4mm Pitch)
MAX3600
Applications
RGB Pico Laser Projector
Up to WXGA and 1080p Resolution Projectors
Monochrome Blue, Green, or Red Pico Laser
Projector
Typical Operating Circuits and Pin Configuration appear at
end of data sheet.
Ordering Information
PART
MAX3600CTL+
†
MAX3600ACTL+
MAX3600RCTL+
††
MAX3600GCTL+
††
MAX3600BCTL+
††
TEMP RANGE
0NC to +70NC
0NC to +70NC
0NC to +70NC
0NC to +70NC
0NC to +70NC
PIN-PACKAGE
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
40 TQFN-EP*
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
†
Not recommended for new designs.
††
Future product—contact factory for availability.
Simplified Functional Diagram
V
A1
V
A2
V
A3
V
A4
OUTPUT 1
OUT1
RED LASER
+V
RED
+V
GREEN
+V
BLUE
+V
NOISE
10-BIT VIDEO
SYNC
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
CLK
PO
REF
CS
SDA
SCL
VM
EN_MAIN
VIDEO DEMULTIPLEXER
VIDEO1
VIDEO2
PERIODIC OFF
OUTPUT 2
OUT2
GREEN LASER
OUT4
NOISE DIODE
PRBS NOISE
GENERATOR
OUTPUT 4
VIDEO3
OUTPUT 3
OUT3
V
CCA
BLUE LASER
3-WIRE BUS
SERIAL PORT
V
CCD
+V
CC
MAX3600
MAX3600A
CONTROL LOGIC
VEE_T, V
EE
EP
OUTPUT ENABLE
_______________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Laser Driver for Projectors
MAX3600
ABSOLUTE MAXIMUM RATINGS
Supply Voltage Range, V
CCA
, V
CCD
...................-0.3V to +4.0V
Voltage Range at V
A1
, V
A2
, V
A4
..........................-0.3V to +6.0V
Voltage Range at V
A3
..........................................-0.3V to +8.5V
Voltage Range at OUT1 ........................... -0.3V to (V
A1
+ 0.3V)
Voltage Range at OUT2 ........................... -0.3V to (V
A2
+ 0.3V)
Voltage Range at OUT3 ........................... -0.3V to (V
A3
+ 0.3V)
Voltage Range at OUT4 ........................... -0.3V to (V
A4
+ 0.3V)
Voltage Range (V
A1
- V
OUT1
), (V
A2
- V
OUT2
),
(V
A4
- V
OUT4
) ......................................................... 0 to +6.0V
Voltage Range (V
A3
- V
OUT3
) .................................... 0 to +7.5V
Voltage Range at D0 to D9, SYNC, CLK, PO, SCL, SDA,
CS,
EN_MAIN, VM, REF, VEE_T, RES .. -0.3V to (V
CC
+ 0.3V)
Current at OUT1, OUT2, OUT3, OUT4 ....................See Table 3
Current at D0 to D9, SYNC, CLK, PO, SCL, SDA,
CS,
EN_MAIN, VM, REF, VEE_T, RES .........................
Q50mA
Current at REF ................................................................
Q0.5mA
Continuous Power Dissipation (T
A
= +70NC)
40-Pin TQFN (derate 35.7mW/NC above +70NC) .......2857mW
Storage Temperature Range............................ -40NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 3.3V
Q5%,
T
A
= 0NC to +70NC, T
J
P
+125NC, EN_MAIN high, V
C_
R
0.9V, unless otherwise noted.) (Note 1, Equation 1)
PARAMETER
VIDEO DAC (10 BITS)
Maximum Conversion Rate
Settling Time
Rise/Fall Time (20% to 80%)
V
A1
, V
A2
,
V
A4
V
A3
Compliance Voltage
V
C_
OUT3 enabled
OUT3 disabled
V
C_
= V
A_
- V
OUT_
OUT1
Analog Supply Current
(I
VA
- I
OUT
) (Note 3, Figure 8)
I
DAC_G0
CLK static
OUT2
OUT3
OUT4
I
DAC_G1
I
DAC_G2
GAIN DAC (8 BITS): VIDEO_ = 3FFh
OUT1
Minimum Full-Scale Current
(gs_ = 00h)
G
LOW
OUT2
OUT3
OUT4
Maximum Full-Scale Current:
MAX3600
(gs_ = FFh)
Maximum Full-Scale Current:
MAX3600A/R/G/B
(gs_ = FFh)
OUT1
G
HIGH
+
G
LOW
OUT2
OUT3
OUT4
OUT1
G
HIGH
+
G
LOW
OUT2
OUT3
OUT4
(6)
(15)
(3.5)
(3)
175
550
140
140
210
630
140
140
12
40
10
10
227
690
170
185
280
760
170
185
(18)
(60)
(15)
(25)
(270)
(850)
(200)
(230)
(330)
(955)
(210)
(300)
mA
mA
mA
(30)
(Note 2)
(Note 2)
100
160
4
1
> 3.1
> 4.0
> 3.1
0.5
18
18
19
15
3
80
(4)
6.0
8.5
8.5
(6.0)
31
34
26
23
mA
V
V
Msps
ns
ns
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Analog Supply Voltage
2
Laser Driver for Projectors
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.3V
Q5%,
T
A
= 0NC to +70NC, T
J
P
+125NC, EN_MAIN high, V
C_
R
0.9V, unless otherwise noted.) (Note 1, Equation 1)
PARAMETER
Settling Time
SYMBOL
t
SG
CONDITIONS
To 5% of final value
OUT1
OS
HIGH
OUT2, OUT3
OUT4
OS
LOW
t
SO
V
OUT1
, V
OUT2
, V
OUT4
= 1.6V;
V
OUT3
= 2.5V
To 5% of final value
V
CC
-
0.3
-0.3
-10
25
25
Q0.2
60
60
100
From serial port load
Enable/Disable Time
Disable Time
Sink Current at SDA
Minimum Frequency
Maximum Frequency
Clock Duty Cycle
Setup Time
Hold Time
Input Switching Time
Input Voltage Range
Input High Threshold
Input Low Threshold
Reference Voltage
Data Input Capacitance
Termination Resistors
REF Input Current
Propagation Delay
V
IN
V
IH2
V
IL2
V
REF
C
D
R
TT
I
REF
Figure 6
V
REF
= V
CC
/2
D0:D9 to OUT_, pixel clocks
450
-5
Relative to V
REF
Relative to V
REF
Operating condition
-170
0.83
0.4
900
-1.2
3
1500
+5
V
CC
/2
t
SU
t
H
f
CLK_MIN
f
CLK_MAX
DDR clock, operating condition
Standard clock, operating condition
Operating condition
Operating condition
Operating condition (10% to 90%)
-0.3
(140)
(45)
(42)
(0.8)
(0.8)
1.5
V
CC
+
0.3
+170
t
DIS
VMh to final value
EN_MAINh to final value
EN_MAINi to I
OUT
i
Read mode, V
SDA
= 0.6V
10
< 10
< 0.25
< 0.25
0.01
16
0.01
> 160
(55)
(58)
(1)
(1)
Fs
mA
MHz
MHz
%
ns
ns
ns
V
mV
mV
V
pF
I
FA
Fs
60
65
120
-25
MIN
TYP
10
83
83
155
+0.2
10
MAX
(50)
(110)
(110)
(200)
+25
(50)
V
CC
+
0.3
+0.3
+10
100
100
(1)
FA
Fs
mA
UNITS
Fs
MAX3600
OFFSET DAC (8 BITS): VIDEO_ = 00h, gs_ = 00h
Maximum Offset:
MAX3600/A/R/G/B
Offset Error
Offset Settling Time
LOGIC I/O: SDA, SCL,
CS,
VM, EN_MAIN
Input High Voltage
Input Low Voltage
Input Current
Input Resistance
Input Capacitance
Input Hysteresis
V
IH1
V
IL1
Operating condition
Operating condition
SDA (write), SCL,
CS
VM to V
CCD
EN_MAIN to V
EE
SCL,
CS,
SDA, VM, EN_MAIN
V
V
FA
kI
pF
mV
VIDEO DATA INPUTS: D0 TO D9, CLK, SYNC, PO
3
Laser Driver for Projectors
MAX3600
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.3V
Q5%,
T
A
= 0NC to +70NC, T
J
P
+125NC, EN_MAIN high, V
C_
R
0.9V, unless otherwise noted.) (Note 1, Equation 1)
PARAMETER
PO GENERATOR
Pixel Clock Range for PO
Minimum PO Pulse Width
PLL Bandwidth
PRBS OSCILLATOR
PRBS Oscillator Frequency
f
PRBS1
f
PIXEL
= 24MHz to 102MHz
Write mode
20% to 80%
(4)
20
20
(10)
(10)
(10)
(10)
VIDEO_ = 1F0h, CLK_SEL = 0,
output disabled
CLK_SEL = 1, VIDEO_: 0
n
3FFh
repeating
Output disabled
(100)
(25)
5
(150)
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
SERIAL PORT: SDA, SCL,
CS
(Figure 14)
Maximum Clock Frequency
f
SCL
Input Edge Time
CS
Leading Time
SCL Pulse-Width High
SCL Pulse-Width Low
SCL to SDA Propagation Delay
Data In Setup Time
Data In Hold Time
CS
Trailing Time
POWER SUPPLY: V
CCA
, V
CCD
Supply Current
(I
VCCA
+ I
VCCD
, gs_ = 80h,
os_ = 80h, f
CLK
= 75MHz)
POWER-ON RESET (Figure 15)
V
CC
for Chip Enabled
V
POR1+
V
POR2+
Power-On Reset Parameters
V
POR2-
V
POR3+
V
POR3-
IC Power-Up Time
Voltage for output on
Voltage for output off
Voltage for output on
Voltage for output off
2.9
V
CC
-
0.8
V
CC
-
0.9
3.3
3.2
200
Fs
V
V
t
L
t
CH
t
CL
t
D
t
DS
t
DH
t
T
Operating condition
Four subpixels
(560)
24
3.5
800
(1040)
(102)
MHz
ns
kHz
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
I
VCC1
I
VCC2
I
VCC2_ENLO
62
65
60
80
90
(70)
mA
Note 1:
Parameters in parentheses ( ) are provided for guidance, but are not tested or guaranteed.
Note 2:
Figure 1 shows the AC test circuit. Settling time is defined from the 50% point of a transition to the greater of
Q5%
of
I
FINAL
or
Q1%
of I
SWITCH
. Control register
gs_
≥ 34. See Figure 18.
Note 3:
I
DAC
≈
G0 + I
DAC_G1
x VD + I
OUT
/I
DAC_G2
, where VD is the average video bit density (Dbits/ns) as shown in Table 1.
4
Laser Driver for Projectors
Table 1. Example Calculation of Video Bit Density
PIXEL
0
1
2
3
4
TIME (ns)
0
10
20
30
40
VIDEO CODE
1111111111
0000000000
0111111111
1000000000
1000000001
DBITS
—
10
9
10
1
VD
—
1.0
0.9
1.0
0.1
MAX3600
R
C
4Ω
C
C
V
CC
I
CC
I
A
V
A1
V
A2
V
A3
V
A4
V
CCA
V
CCD
OUT1
PROBE
V
L1
C
C
V
A1
V
A2
V
A3
V
A4
R
C
2Ω
OUT2
PROBE
R
C
20Ω
DATA
SOURCE
D0
MAX3600
D1
MAX3600A
D2
D3
D4
D5
OUT3
D6
D7
D8
D9
CLK
SYNC
VM
OUT4
PO
SDA
SCL
EP
CS
V
EE
VEE_T
EN_MAIN
V
L2
C
C
PROBE
R
C
3Ω
V
L3
C
C
V
L1
= 2.2V, V
L2
= 1.2V,
V
L3
= 3.5V, V
L4
= 1.6V
V
L4
PROBE
Figure 1. Test Circuit
5
京公网安备 11010802033920号
EEWORLD
