MAX1512ETA+T

MAX1512ETA+T Datasheet

MAX1512

Part	Datasheet
MAX1512ETA+T	MAX1512ETA+T (pdf)

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EEPROM-Programmable TFT VCOM Calibrator MAX1512 The MAX1512 is a programmable VCOM-adjustment solution for thin-film transistor TFT liquid-crystal displays LCDs . The MAX1512 simplifies the labor-intensive VCOM-adjustment process and replaces mechanical potentiometers, which significantly reduces labor costs, increases reliability, and enables automation. The MAX1512 attaches to an external resistive voltagedivider and sinks a programmable current to set the VCOM voltage level. An internal 7-bit digital-to-analog converter DAC controls the sink current. The DAC is ratiometric relative to AVDD and is guaranteed to be monotonic over all operating conditions. This VCOM calibrator IC includes an EEPROM to store the desired VCOM voltage level. The EEPROM can be programmed repeatedly, giving TFT LCD manufacturers the flexibility to calibrate the display panel as many times as the manufacturing process requires. The IC features a single-wire interface between the LCD panel and the programming circuit. The singlewire interface delivers both programming power and DAC-adjustment commands to minimize changes to panel connectors and production equipment. The MAX1512 is available in an 8-pin 3mm x 3mm TDFN package. A complete evaluation kit is available to simplify evaluation and production development. LCD Panels Notebook Computers Monitors LCD TVs Pin Configuration TOP VIEW OUT 1 AVDD 2 N.C. 3 GND 4 MAX1512 8 SET 7 CE 6 CTL 5 VDD TDFN A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES. 7-Bit Adjustable Sink-Current Output Resistor-Adjustable Full-Scale Range Guaranteed Monotonic Output Over Operating Range Single-Wire Adjustment and Programming* EEPROM Stores VCOM Setting Interface Enable/Disable Control CE 2.6V to 3.6V Logic Supply-Voltage Operating Range VDD 4.5V to 20V Analog Supply-Voltage Range VAVDD VDD UVLO Protection 8-Pin 3mm x 3mm TDFN 0.8mm max Ordering Information PART MAX1512ETA TEMP RANGE -40°C to +85°C MAX1512ETA+ -40°C to +85°C +Denotes lead-free package. PIN-PACKAGE 8 TDFN 3mm x 3mm 8 TDFN 3mm x 3mm Typical Operating Circuit AVDD MAX1512 OUT CTL SET AVDD R1 R2 RSET VCOM *Patent Pending. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at EEPROM-Programmable TFT VCOM Calibrator MAX1512 ABSOLUTE MAXIMUM RATINGS VDD, SET, CE to +4V OUT to GND to +14V AVDD to +24V CTL to GND to +16V Continuous Power Dissipation TA = +70°C 8-Pin Thin QFN 3mm x 3mm derate 24.4mW/°C above Operating Temperature Range ...........................-40°C to +85°C Junction Temperature Storage Temperature Range .............................-65°C to +160°C Lead Temperature soldering, 10s .................................+300°C 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 Circuit of Figure 1, VDD = 3V, VAVDD = 10V, VOUT = 5V, RSET = TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Note 1 PARAMETER CONDITIONS MIN TYP MAX UNITS SINK-CURRENT ADJUSTMENT SET Voltage Resolution SET Differential Nonlinearity Guaranteed monotonic Bits SET Zero-Scale Error SET Full-Scale Error SET Current SET External Resistance Note 2 VSET / VAVDD Voltage Ratio ISET RSET To GND, VAVDD = 20V To GND, VAVDD = 4.5V DAC full scale VSET / VAVDD Factory-Set Voltage Ratio VDD SUPPLY VDD Supply Range VDD Supply Current VDD Power-On Reset Threshold VDD Power-On Reset Hysteresis CONTROL AND PROGRAMMING CE Input Low Voltage CE Input High Voltage CE Startup Time CTL High Voltage CTL Float Voltage CTL Low Voltage CTL Rejected Pulse Width CTL Minimum Pulse Width CE = VDD CE = GND Rising edge Falling edge 2.6V < VDD < 3.6V 2.6V < VDD < 3.6V Note 3 2.6V < VDD < 3.6V 2.6V < VDD < 3.6V 2.6V < VDD < 3.6V x VDD x VDD x VDD x VDD x VDD x VDD CTL Minimum Time Between Pulses CTL Input Current CTL = GND CTL = VDD -10 µA MAX1512 EEPROM-Programmable TFT VCOM Calibrator ELECTRICAL CHARACTERISTICS continued Circuit of Figure 1, VDD = 3V, VAVDD = 10V, VOUT = 5V, RSET = TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Note 1

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EEPROM-Programmable TFT VCOM Calibrator

MAX1512

The MAX1512 is a programmable VCOM-adjustment solution for thin-film transistor TFT liquid-crystal displays LCDs . The MAX1512 simplifies the labor-intensive VCOM-adjustment process and replaces mechanical potentiometers, which significantly reduces labor costs, increases reliability, and enables automation.

The MAX1512 attaches to an external resistive voltagedivider and sinks a programmable current to set the VCOM voltage level. An internal 7-bit digital-to-analog converter DAC controls the sink current. The DAC is ratiometric relative to AVDD and is guaranteed to be monotonic over all operating conditions. This VCOM calibrator IC includes an EEPROM to store the desired VCOM voltage level. The EEPROM can be programmed repeatedly, giving TFT LCD manufacturers the flexibility to calibrate the display panel as many times as the manufacturing process requires.

The IC features a single-wire interface between the LCD panel and the programming circuit. The singlewire interface delivers both programming power and DAC-adjustment commands to minimize changes to panel connectors and production equipment. The MAX1512 is available in an 8-pin 3mm x 3mm TDFN package. A complete evaluation kit is available to simplify evaluation and production development.

LCD Panels Notebook Computers Monitors LCD TVs

Pin Configuration

TOP VIEW

OUT 1 AVDD 2

N.C. 3 GND 4

MAX1512
8 SET 7 CE 6 CTL 5 VDD

TDFN

A "+" SIGN WILL REPLACE THE FIRST PIN INDICATOR ON LEAD-FREE PACKAGES.
7-Bit Adjustable Sink-Current Output Resistor-Adjustable Full-Scale Range Guaranteed Monotonic Output Over Operating

Range Single-Wire Adjustment and Programming* EEPROM Stores VCOM Setting Interface Enable/Disable Control CE 2.6V to 3.6V Logic Supply-Voltage Operating

Range VDD 4.5V to 20V Analog Supply-Voltage Range VAVDD VDD UVLO Protection 8-Pin 3mm x 3mm TDFN 0.8mm max
Ordering Information

PART MAX1512ETA

TEMP RANGE -40°C to +85°C

MAX1512ETA+ -40°C to +85°C
+Denotes lead-free package.

PIN-PACKAGE 8 TDFN 3mm x 3mm 8 TDFN 3mm x 3mm

Typical Operating Circuit

AVDD

MAX1512 OUT

CTL SET

AVDD R1 R2

RSET

VCOM
*Patent Pending.

Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at

EEPROM-Programmable TFT VCOM Calibrator

MAX1512

ABSOLUTE MAXIMUM RATINGS

VDD, SET, CE to +4V OUT to GND to +14V AVDD to +24V CTL to GND to +16V Continuous Power Dissipation TA = +70°C
8-Pin Thin QFN 3mm x 3mm derate 24.4mW/°C
above Operating Temperature Range ...........................-40°C to +85°C Junction Temperature Storage Temperature Range .............................-65°C to +160°C Lead Temperature soldering, 10s .................................+300°C

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

Circuit of Figure 1, VDD = 3V, VAVDD = 10V, VOUT = 5V, RSET = TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Note 1

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

SINK-CURRENT ADJUSTMENT

SET Voltage Resolution SET Differential Nonlinearity

Guaranteed monotonic

Bits

SET Zero-Scale Error SET Full-Scale Error SET Current

SET External Resistance Note 2

VSET / VAVDD Voltage Ratio

ISET RSET

To GND, VAVDD = 20V To GND, VAVDD = 4.5V DAC full scale

VSET / VAVDD Factory-Set Voltage Ratio

VDD SUPPLY

VDD Supply Range

VDD Supply Current

VDD Power-On Reset Threshold

VDD Power-On Reset Hysteresis CONTROL AND PROGRAMMING CE Input Low Voltage CE Input High Voltage CE Startup Time CTL High Voltage CTL Float Voltage CTL Low Voltage CTL Rejected Pulse Width CTL Minimum Pulse Width

CE = VDD CE = GND Rising edge Falling edge
2.6V < VDD < 3.6V 2.6V < VDD < 3.6V Note 3 2.6V < VDD < 3.6V 2.6V < VDD < 3.6V 2.6V < VDD < 3.6V
x VDD x VDD
x VDD x VDD
x VDD x VDD

CTL Minimum Time Between Pulses

CTL Input Current

CTL = GND CTL = VDD
-10 µA

MAX1512

EEPROM-Programmable TFT VCOM Calibrator

ELECTRICAL CHARACTERISTICS continued

Circuit of Figure 1, VDD = 3V, VAVDD = 10V, VOUT = 5V, RSET = TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C. Note 1

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Datasheet ID: MAX1512ETA+T 647238