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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX9666 Datasheet

Nonvolatile Programmable Gamma and VCOM Reference Voltages

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MAX9666 pdf
19-5000; Rev 4; 7/10
6/8/10-Channel, 10-Bit, Nonvolatile Programmable
Gamma and VCOM Reference Voltages
General Description
The MAX9665/MAX9666/MAX9667 provide multiple
programmable reference voltages for gamma correc-
tion in TFT LCDs and a programmable reference volt-
age for VCOM adjustment. All gamma and VCOM
reference voltages have a 10-bit digital-to-analog con-
verter (DAC) and buffer with high peak current. This
reduces the recovery time of the output voltage when
critical levels and patterns are displayed.
These devices include multiple-time programmable
(MTP) memory to store gamma and VCOM codes on
the chip, eliminating the need for external EEPROM.
The MTP memory supports up to 300 write operations.
The MAX9665/MAX9666/MAX9667 feature an I2C inter-
face to control the programmable reference voltages
and a single-wire interface to toggle the VCOM refer-
ence voltage up or down.
Applications
TFT LCDs
Ordering Information
PART
GAMMA
CHANNELS
TEMP RANGE
PIN-
PACKAGE
MAX9665ETP+ 6 -40°C to +85°C 20 TQFN-EP*
MAX9666ETP+ 8 -40°C to +85°C 20 TQFN-EP*
MAX9667ETP+ 10 -40°C to +85°C 20 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configurations
TOP VIEW
15 14 13 12 11
Features
o 6/8/10 Channels Gamma Correction, 10-Bit
Resolution
o VCOM Driver
o Integrated Multiple-Time Programmable Memory
o DAC Reference Input
o Single-Wire and I2C Programming of VCOM
Reference
o 950mA Peak Transient Current on VCOM Channel
Functional Diagrams
AVDD
REF
10
DAC
10
DAC
10
DAC
MTP
MEMORY
I2C
REGISTERS
10
DAC
10
DAC
10
DAC
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
REF 16
AVDD 17
FB 18
VCOM 19
CTL 20
+
MAX9665
EP*
1 2345
10 OUT3
9 N.C.
8 OUT4
7 N.C.
6 OUT5
THIN QFN
5mm x 5mm
*EP = EXPOSED PAD. CONNECT TO DIGITAL GROUND PLANE.
Pin Configurations continued at end of data sheet.
DVDD
SCL
SDA
CE
CTL
GND
10
DAC
I2C
SINGLE-WIRE
INTERFACE
MAX9665
VCOM
FB
Functional Diagrams continued at end of data sheet.
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX9666 Datasheet

Nonvolatile Programmable Gamma and VCOM Reference Voltages

No Preview Available !

MAX9666 pdf
6/8/10-Channel, 10-Bit, Nonvolatile Programmable
Gamma and VCOM Reference Voltages
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
AVDD to GND.....................................................-0.3V to +22V
DVDD to GND.......................................................-0.3V to +4V
Outputs
OUT0–OUT9, VCOM to GND .............-0.3V to (VAVDD + 0.3V)
Inputs
SDA, SCL, CE to GND..........................................-0.3V to +4V
CTL, REF to GND ...............................................-0.3V to +22V
FB to GND ..........................................-0.3V to (VAVDD + 0.3V)
Continuous Current
OUT0–OUT9, VCOM...................................................±400mA
All Other Pins ................................................................±50mA
Continuous Power Dissipation (TA = +70°C)
20-Pin TQFN (derate 25.6mW/°C above +70°C) ....2051.3mW
Junction-to-Case Thermal Resistance (θJC) (Note 1)
20-Pin TQFN...................................................................6°C/W
Junction-to-Ambient Thermal Resistance (θJA) (Note 1)
20-Pin TQFN.................................................................39°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
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
(VAVDD = VREF = 15.7V, VDVDD = 3.3V, VGND = 0V, VCOM connected to FB, CTL = DVDD/2, no load, TA = -40°C to +85°C, unless
otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SUPPLIES
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Analog-Supply Voltage Range
VAVDD
Guaranteed by power-supply rejection
ratio specification (Note 3)
9
20 V
Analog-Supply Voltage Range for
Programming MTP
VAVDD_MTP
15 20 V
Digital-Supply Voltage Range
Analog Quiescent Current
Digital Quiescent Current
DVDD Undervoltage Lockout
DAC
Resolution
Integral Nonlinearity Error
Differential Nonlinearity Error
REF Input Resistance
GAMMA OUTPUTS (Note 4)
Short-Circuit Current
Maximum Capacitive Load
Output Impedance
Load Regulation
Total Output Error
Slew Rate
VDVDD
IAVDD
IDVDD
UVLO
MAX9665
MAX9666
MAX9667
No SCL or SDA transitions
2.7 3.6 V
12 22
14 24 mA
16 26
450 900
µA
2.3 2.6
V
INL TA = +25°C, 16 CODE 1008
DNL TA = +25°C, 16 CODE 1008
10 Bits
1 LSB
1 LSB
384 k
ISC Output to AVDD or GND, TA = +25°C
100 400
mA
Placed directly at output
300 pF
ZO Output resistance when output is disabled
84
k
REG -5mA to +5mA
0.5 mV/mA
TA = +25°C, measured at code = 512
-40
+40 mV
SR 5V swing, measure 10% to 90%
22 V/µs
2 _______________________________________________________________________________________


Part Number MAX9666
Description Nonvolatile Programmable Gamma and VCOM Reference Voltages
Maker Maxim
Total Page 30 Pages
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