MAX9665ETP+ Maxim Integrated, MAX9665ETP+ Datasheet

no-image

MAX9665ETP+

Manufacturer Part Number
MAX9665ETP+
Description
LCD Gamma Buffers 6/8/10-Channel 10-Bit Nonvolatile Programmable Gamma and VCOM Reference Voltages
Manufacturer
Maxim Integrated
Datasheet
6/8/10-Channel, 10-Bit, Nonvolatile Programmable
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 I
face to control the programmable reference voltages
and a single-wire interface to toggle the VCOM refer-
ence voltage up or down.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
19-5000; Rev 4; 7/10
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.
MAX9665ETP+
MAX9666ETP+
MAX9667ETP+
Pin Configurations continued at end of data sheet.
PART
TOP VIEW
*EP = EXPOSED PAD. CONNECT TO DIGITAL GROUND PLANE.
TFT LCDs
VCOM
AVDD
CTL
REF
FB
16
17
18
19
20
CHANNELS
________________________________________________________________ Maxim Integrated Products
GAMMA
+
10
15
6
8
1
Ordering Information
General Description
5mm x 5mm
Gamma and VCOM Reference Voltages
14
2
THIN QFN
Pin Configurations
MAX9665
13
TEMP RANGE
- 40°C to + 85° C 20 TQFN-EP*
- 40°C to + 85° C 20 TQFN-EP*
- 40°C to + 85° C 20 TQFN-EP*
3
12
4
Applications
11
EP*
5
10
9
8
7
6
PIN-
PACKAGE
OUT3
N.C.
OUT4
N.C.
OUT5
2
C inter-
o 6/8/10 Channels Gamma Correction, 10-Bit
o VCOM Driver
o Integrated Multiple-Time Programmable Memory
o DAC Reference Input
o Single-Wire and I
o 950mA Peak Transient Current on VCOM Channel
Resolution
Reference
Functional Diagrams continued at end of data sheet.
DVDD
AVDD
SCL
SDA
GND
CTL
REF
CE
MEMORY
MTP
SINGLE-WIRE
INTERFACE
I
2
C
REGISTERS
2
I
2
C
C Programming of VCOM
Functional Diagrams
10
10
10
10
10
10
10
DAC
DAC
DAC
DAC
DAC
DAC
DAC
MAX9665
Features
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
FB
VCOM
1

Related parts for MAX9665ETP+

MAX9665ETP+ Summary of contents

Page 1

... VCOM refer- ence voltage up or down. TFT LCDs Ordering Information GAMMA PART TEMP RANGE CHANNELS MAX9665ETP 40° 85° TQFN-EP* MAX9666ETP 40° 85° TQFN-EP* MAX9667ETP 40° 85° TQFN-EP* + Denotes a lead(Pb)-free/RoHS-compliant package ...

Page 2

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. Inputs SDA, SCL GND..........................................-0.3V to +4V ...

Page 3

Nonvolatile Programmable Gamma and VCOM Reference Voltages ELECTRICAL CHARACTERISTICS (continued 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T PARAMETER SYMBOL Low Outp tag e ...

Page 4

Nonvolatile Programmable Gamma and VCOM Reference Voltages ELECTRICAL CHARACTERISTICS (continued 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T PARAMETER SYMBOL SINGLE-WIRE INTERFACE C E Inp ut Low ...

Page 5

Nonvolatile Programmable Gamma and VCOM Reference Voltages ELECTRICAL CHARACTERISTICS (continued 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T PARAMETER SYMBOL TIMING CHARACTERISTICS (Figure 4) ...

Page 6

Nonvolatile Programmable Gamma and VCOM Reference Voltages ( 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T OUTPUT OFFSET VOLTAGE DISTRIBUTION 30 CODE 512 OUT2 ...

Page 7

Nonvolatile Programmable Gamma and VCOM Reference Voltages ( 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T INTEGRAL NONLINEARITY vs. DAC CODE 0. REF 0.20 0.15 ...

Page 8

Nonvolatile Programmable Gamma and VCOM Reference Voltages ( 15.7V 3.3V, V AVDD REF DVDD otherwise noted. Typical values are at T DIFFERENTIAL NONLINEARITY vs. DAC CODE 0. REF 0.20 0.15 ...

Page 9

Nonvolatile Programmable Gamma and VCOM Reference Voltages PIN MAX9665 MAX9666 MAX9667 — — — — — 6 — ...

Page 10

Nonvolatile Programmable Gamma and VCOM Reference Voltages Detailed Description The MAX9665/MAX9666/MAX9667 are a family of multi- channel, programmable reference voltages. Each channel has a 10-bit DAC to create the reference volt- age. One channel has an operational amplifier ...

Page 11

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD AVDD REF MTP MEMORY DVDD SCL SDA CE CTL SINGLE-WIRE INTERFACE GND Figure 1. Pullup and Pulldown Resistors Attached to Source Driver ______________________________________________________________________________________ 10 DAC 10 DAC ...

Page 12

Nonvolatile Programmable Gamma and VCOM Reference Voltages Multiple-Time Programmable (MTP) MTP memory, which is a form of nonvolatile memory, stores the DAC code values even when the chip is not powered. When the chip is powered up, the ...

Page 13

Nonvolatile Programmable Gamma and VCOM Reference Voltages VCOM WINDOW VCOM WINDOW REGISTERS MTP MEMORY LOCATION 0b0000 LOCATION 0b0001 10-BIT BUS Figure 3. 10-Bit Bus Bus Architecture The internal memory, both volatile and nonvolatile, is divided into blocks that ...

Page 14

Nonvolatile Programmable Gamma and VCOM Reference Voltages SDA t SU,DAT t LOW SCL t HIGH t HD,STA t R START CONDITION 2 Figure Serial-Interface Timing Diagram Through the Single-Wire Interface For VCOM MTP programming through ...

Page 15

Nonvolatile Programmable Gamma and VCOM Reference Voltages S Sr SCL SDA Figure 5. START, STOP, and REPEATED START Conditions Early STOP Conditions The MAX9665/MAX9666/MAX9667 recognize a STOP condition at any point during data transmission except if the STOP ...

Page 16

Nonvolatile Programmable Gamma and VCOM Reference Voltages A write to the MAX9665/MAX9666/MAX9667 consists of transmitting a START condition, the slave address with the R/W bit set to 0, one data byte of data to configure the internal register ...

Page 17

Nonvolatile Programmable Gamma and VCOM Reference Voltages ACKNOWLEDGE FROM MAX9665–MAX9667 S SLAVE ADDRESS 0 R/W Figure 7. Writing One Byte of Data to the MAX9665/MAX9666/MAX9667 ACKNOWLEDGE FROM MAX9665/ ACKNOWLEDGE FROM MAX9665/ MAX9666/MAX9667 S SLAVE ADDRESS 0 A R/W ...

Page 18

Nonvolatile Programmable Gamma and VCOM Reference Voltages 2 The I C interface was architected for 8-bit systems. With the increase in DAC resolution from 8 bits to 10 bits, 2 bytes must be transferred to get 10 bits. ...

Page 19

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 5. Register Map for MAX9667 LEAST SIGNIFICANT BYTE REGISTER REGISTER NAME ADDRESS 0x01 CMD_OPND 0x03 VCOMMIN_L 0x05 VCOMMAX_L 0x07 VCOM_L 0x09 GMA0_L 0x0B GMA1_L 0x0D GMA2_L 0x0F GMA3_L 0x11 GMA4_L ...

Page 20

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 6. MAX9665 Register Description REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Command 0x00 CMD_OPRN operation Command 0x01 CMD_OPND operand VCOMMIN 0x02 VCOMMIN_M (most significant byte) VCOMMIN 0x03 VCOMMIN_L (least significant byte) ...

Page 21

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 6. MAX9665 Register Description (continued) REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Gamma 2 (least significant 0x0D GMA2_L byte) Gamma 3 0x0E GMA3_M (most significant byte) Gamma 3 0x0F GMA3_L (least ...

Page 22

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 7. MAX9666 Register Description REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Command 0x00 CMD_OPRN operation Command 0x01 CMD_OPND operand VCOMMIN (most 0x02 VCOMMIN_M significant byte) VCOMMIN (least 0x03 VCOMMIN_L significant byte) ...

Page 23

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 7. MAX9666 Register Description (continued) REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Gamma 1 (most 0x0A GMA1_M significant byte) Gamma 1 (least 0x0B GMA1_L significant byte) Gamma 2 (most 0x0C GMA2_M ...

Page 24

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 7. MAX9666 Register Description (continued) REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Gamma 5 (least 0x13 GMA5_L significant byte) Gamma 6 (most 0x14 GMA6_M significant byte) Gamma 6 (least 0x15 GMA6_L ...

Page 25

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 8. MAX9667 Register Description REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Command 0x00 CMD_OPRN operation Command 0x01 CMD_OPND operand VCOMMIN (m ost 0x02 VCOMMIN_M cant b yte) ...

Page 26

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 8. MAX9667 Register Description (continued) REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Gamma 2 (most 0x0C GMA2_M significant byte) Gamma 2 (least 0x0D GMA2_L significant byte) Gamma 3 (most 0x0E GMA3_M ...

Page 27

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 8. MAX9667 Register Description (continued) REGISTER REGISTER REGISTER ADDRESS NAME DESCRIPTION Gamma 7 (most 0x16 GMA7_M significant byte) Gamma 7 (least 0x17 GMA7_L significant byte) Gamma 8 (most 0x18 GMA8_M ...

Page 28

Nonvolatile Programmable Gamma and VCOM Reference Voltages Table 10. Example Commands for MOV Operation REGISTER ADDRESS Operation: Move Gamma register value to Gamma MTP memory Operation: Move VCOM MTP memory to VCOM register Operation: Move ...

Page 29

Nonvolatile Programmable Gamma and VCOM Reference Voltages > 1ms CTL HIGH CTL DVDD/2 CTL LOW CE/DVDD DAC SETTING UNDEFINED VCOM Figure 10. VCOM Adjustment ______________________________________________________________________________________ > 200µs > 200µs > 200µs >10µs > 200µs FIRST COUNT IGNORED CTL ...

Page 30

Nonvolatile Programmable Gamma and VCOM Reference Voltages MTP Programming (CTL) To program the MTP memory, apply the MTP program- ming waveform through the CTL interface (Figure 11). Unlike the MAX1512, the control interface only delivers DAC adjustment commands, ...

Page 31

Nonvolatile Programmable Gamma and VCOM Reference Voltages Applications Information Power-Up and Power-Down Figure 13 below shows the power-up sequence. The digital supply must be powered up first. The analog supply should not be powered up for at least ...

Page 32

Nonvolatile Programmable Gamma and VCOM Reference Voltages Electrostatic Discharge (CTL, CE) Often, CTL and CE are exposed at the panel connector and are therefore subject to electrostatic discharge (ESD). Resistor-capacitor (RC) filters can be employed at these inputs ...

Page 33

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD REF AVDD REF MTP REGISTERS MEMORY DVDD SCL SDA CE CTL SINGLE-WIRE INTERFACE GND ______________________________________________________________________________________ 10 OUT0 DAC 10 OUT1 DAC 10 OUT2 DAC ...

Page 34

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD REF AVDD REF MTP REGISTERS MEMORY DVDD SCL SDA CE SINGLE-WIRE CTL INTERFACE GND 34 ______________________________________________________________________________________ Typical Operating Circuits (continued) 10 OUT0 DAC 10 ...

Page 35

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD REF MTP REGISTERS MEMORY DVDD SCL SDA CE CTL SINGLE-WIRE INTERFACE GND ______________________________________________________________________________________ Typical Operating Circuits (continued) 10 OUT0 DAC 10 OUT1 DAC 10 ...

Page 36

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD REF MTP MEMORY DVDD SCL SDA CE CTL GND 36 ______________________________________________________________________________________ Functional Diagrams (continued) 10 DAC 10 DAC 10 DAC 10 DAC REGISTERS DAC 10 DAC ...

Page 37

Nonvolatile Programmable Gamma and VCOM Reference Voltages AVDD REF MTP MEMORY DVDD SCL SDA CE CTL GND ______________________________________________________________________________________ Functional Diagrams (continued) 10 DAC 10 DAC 10 DAC 10 DAC 10 DAC DAC REGISTERS 10 ...

Page 38

Nonvolatile Programmable Gamma and VCOM Reference Voltages TOP VIEW REF 16 AVDD MAX9666 VCOM 19 20 CTL + THIN QFN 5mm x 5mm *EP = EXPOSED PAD. CONNECT TO ...

Page 39

Nonvolatile Programmable Gamma and VCOM Reference Voltages For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show ...

Page 40

Nonvolatile Programmable Gamma and VCOM Reference Voltages For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show ...

Page 41

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 41 © 2010 Maxim Integrated Products ...

Related keywords