MAX9665ETP+

MAX9665ETP+ Datasheet

MAX9665/MAX9666/MAX9667

Part	Datasheet
MAX9665ETP+	MAX9665ETP+ (pdf)

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MAX9665/MAX9666/MAX9667 6/8/10-Channel, 10-Bit, Nonvolatile Programmable Gamma and VCOM Reference Voltages The MAX9665/MAX9666/MAX9667 provide multiple programmable reference voltages for gamma correction in TFT LCDs and a programmable reference voltage for VCOM adjustment. All gamma and VCOM reference voltages have a 10-bit digital-to-analog converter 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 interface to control the programmable reference voltages and a single-wire interface to toggle the VCOM reference voltage up or down. TFT LCDs Ordering Information PART GAMMA CHANNELS TEMP RANGE PINPACKAGE MAX9665ETP+ -40°C to +85°C 20 TQFN-EP* MAX9666ETP+ -40°C to +85°C 20 TQFN-EP* MAX9667ETP+ -40°C to +85°C 20 TQFN-EP* +Denotes a lead Pb -free/RoHS-compliant package. EP = Exposed pad. Pin Configurations OUT0 N.C. OUT1 N.C. OUT2 TOP VIEW 15 14 13 12 11 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 REGISTERS 10 DAC 10 DAC OUT0 OUT1 OUT2 OUT3 OUT4 OUT5 REF 16 AVDD 17 FB 18 VCOM 19 CTL 20 MAX9665 1 2345 10 OUT3 9 N.C. 8 OUT4 7 N.C. 6 OUT5 CE DVDD SCL SDA GND THIN QFN 5mm x 5mm EP = EXPOSED PAD. CONNECT TO DIGITAL GROUND PLANE. Pin Configurations continued at end of data sheet. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at 6/8/10-Channel, 10-Bit, Nonvolatile Programmable Gamma and VCOM Reference Voltages MAX9665/MAX9666/MAX9667 ABSOLUTE MAXIMUM RATINGS Supply Voltages AVDD to +22V DVDD to +4V Outputs VCOM to GND .............-0.3V to VAVDD + 0.3V Inputs SDA, SCL, CE to +4V CTL, REF to GND to +22V FB to GND to VAVDD + 0.3V Continuous Current All Other Pins Continuous Power Dissipation TA = +70°C 20-Pin TQFN derate 25.6mW/°C above +70°C ....2051.3mW Junction-to-Case Thermal Resistance Note 1 20-Pin Junction-to-Ambient Thermal Resistance Note 1 20-Pin Operating Temperature Range ...........................-40°C to +85°C Junction Temperature Storage Temperature Range .............................-65°C to +150°C Lead Temperature soldering, 10s .................................+300°C Soldering Temperature reflow Note 1 Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to 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 CONDITIONS MIN TYP MAX UNITS Analog-Supply Voltage Range VAVDD Guaranteed by power-supply rejection ratio specification Note 3 Analog-Supply Voltage Range for Programming MTP VAVDD_MTP 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 TA = +25°C, 16 CODE 1008 TA = +25°C, 16 CODE 1008 Bits Output to AVDD or GND, TA = +25°C

PDF Datasheet Preview

MAX9665/MAX9666/MAX9667
6/8/10-Channel, 10-Bit, Nonvolatile Programmable Gamma and VCOM Reference Voltages

The MAX9665/MAX9666/MAX9667 provide multiple programmable reference voltages for gamma correction in TFT LCDs and a programmable reference voltage for VCOM adjustment. All gamma and VCOM reference voltages have a 10-bit digital-to-analog converter 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 interface to control the programmable reference voltages and a single-wire interface to toggle the VCOM reference voltage up or down.

TFT LCDs
Ordering Information

PART

GAMMA CHANNELS

TEMP RANGE

PINPACKAGE

MAX9665ETP+
-40°C to +85°C 20 TQFN-EP*

MAX9666ETP+
-40°C to +85°C 20 TQFN-EP*

MAX9667ETP+
-40°C to +85°C 20 TQFN-EP*
+Denotes a lead Pb -free/RoHS-compliant package.
*EP = Exposed pad.

Pin Configurations

OUT0 N.C. OUT1 N.C. OUT2

TOP VIEW
15 14 13 12 11
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

REGISTERS
10 DAC
10 DAC

OUT0 OUT1 OUT2 OUT3 OUT4 OUT5

REF 16 AVDD 17

FB 18 VCOM 19

CTL 20

MAX9665
1 2345
10 OUT3 9 N.C. 8 OUT4 7 N.C. 6 OUT5

CE DVDD

SCL SDA GND

THIN QFN 5mm x 5mm
*EP = EXPOSED PAD. CONNECT TO DIGITAL GROUND PLANE.

Pin Configurations continued at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at
6/8/10-Channel, 10-Bit, Nonvolatile Programmable Gamma and VCOM Reference Voltages

MAX9665/MAX9666/MAX9667

ABSOLUTE MAXIMUM RATINGS

Supply Voltages AVDD to +22V DVDD to +4V

Outputs VCOM to GND .............-0.3V to VAVDD + 0.3V

Inputs SDA, SCL, CE to +4V CTL, REF to GND to +22V FB to GND to VAVDD + 0.3V

Continuous Current All Other Pins

Continuous Power Dissipation TA = +70°C 20-Pin TQFN derate 25.6mW/°C above +70°C ....2051.3mW

Junction-to-Case Thermal Resistance Note 1
20-Pin

Junction-to-Ambient Thermal Resistance Note 1
20-Pin

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature soldering, 10s .................................+300°C

Soldering Temperature reflow

Note 1 Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to

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

CONDITIONS

MIN TYP MAX UNITS

Analog-Supply Voltage Range

VAVDD

Guaranteed by power-supply rejection ratio specification Note 3

Analog-Supply Voltage Range for Programming MTP

VAVDD_MTP

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

TA = +25°C, 16 CODE 1008

TA = +25°C, 16 CODE 1008

Bits

Output to AVDD or GND, TA = +25°C

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Datasheet ID: MAX9665ETP+ 647436