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MAX9660ATA+T

P1-P3P4-P6P7-P9P10-P12P13-P13
General Description
The MAX9660 provides a programmable reference volt-
age for VCOM adjustment in TFT-LCD panels. A 7-bit,
current digital-to-analog converter (DAC) sinks current
from an external resistor-divider string to create the
VCOM reference voltage, which then serves as the input
to a voltage buffer capable of driving out high current.
The MAX9660 includes multiple one-time programma-
ble (MOTP) memory to store the DAC code on the chip,
eliminating the need for external EEPROM. The chip
supports up to 30 write operations to MOTP memory.
The MAX9660 has an I
2
C interface to set the VCOM ref-
erence voltage and write into MOTP memory.
Applications
TFT-LCD Panels
Instrumental Control Voltage Source
Features
o VCOM Amplifier with 900mA Peak Output Current
o Integrated Nonvolatile Memory to Store VCOM
Setting
o 7-Bit, Adjustable Sink-Current Device
o Resistor-Adjustable, Full-Scale Range
o 2.5V to 3.6V Logic Supply Range
o 8V to 20V Analog Supply Range
MAX9660
7-Bit, Programmable VCOM Reference
with 30x MOTP Memory
________________________________________________________________
Maxim Integrated Products
1
19-4564; Rev 0; 4/09
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.
EVALUATION KIT
AVAILABLE
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX9660ATA+ -40°C to +125°C 8 TDFN-EP*
+
Denotes a lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
I
2
C AND MOTP
CONTROLLER
MOTP MEMORY
7
SCL
SDA
7
DVDD AVDD
AVDD
GND SET
OUT
VCOM
R
SET
R
1
R
2
19R
R
MAX9660
Functional Diagram
TDFN
+
TOP VIEW
12
8
7
3
4
6
5
SDA
DVDD
GND
SET
SCL
AVDD
VCOM
OUT
MAX9660
Pin Configuration
MAX9660
7-Bit, Programmable VCOM Reference
with 30x MOTP Memory
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DVDD
= 3.3V, V
AVDD
= 16V, V
GND
= 0, R
SET
= 6.8kΩ, no load, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
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.
Supply Voltage
DVDD, SET, SCL, and SDA to GND .....................-0.3V to +4V
AVDD to GND.....................................................-0.3V to +22V
OUT to GND .......................................................-0.3V to +22V
VCOM to GND .......................................-0.3V to AVDD + 0.3V
Continuous Current
SDA .................................................................................10mA
VCOM .........................................................................±100mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin TDFN-EP (derate 18.5mW/°C above +70°C)
Single-Layer Board ..................................................1481mW
8-Pin TDFN-EP (derate 24.4mW/°C above +70°C)
Multilayer Board .......................................................1951mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLIES
Digital Supply Voltage Range V
DVDD
2.5 3.3 3.6 V
Analog Supply Voltage Range V
AVDD
820V
Analog Quiescent Current I
AVDD
4.5 10 mA
T
A
= +25°C 15 20
Analog Supply Current Range for
Programming MOTP
I
AVDD
T
A
= +85°C 45
mA
Digital Quiescent Current I
DVDD
200 500 µA
MOTP Programming Times MOTP
SET
30 Times
VCOM OUTPUT (VCOM)
Common-Mode Range 0.2
V
AVDD
- 0.2
V
Total Output Error V
ERR
T
A
= +25°C,
V
VCOM
from 2V to V
AVDD
- 2V
-22 +22 mV
Output Voltage Swing Low V
OL
I
L
= -5mA, V
OUT
= 0 150 mV
Output Voltage Swing High V
OH
I
L
= +5mA, V
OUT
= V
AVDD
V
AVDD
- 150
mV
Output Load Regulation LR I
L
= -80mA to +80mA ±0.2 mV/mA
VCOM = AVDD -900
Short-Circuit Current (Note 2) I
SC
VCOM = GND +900
mA
Power-Supply Rejection Ratio PSRR 8V ≤ V
AVDD
≤ 20V, V
OUT
= 5V 70 dB
Slew Rate SR
4V
P-P
at VCOM, 10% to 90%,
R
L
= 10kΩ, C
L
= 20pF
45 V/µs
Bandwidth dB
R
L
= 10kΩ, C
L
= 20pF,
V
VCOM
= 100mV
P-P
20 MHz
MAX9660
7-Bit, Programmable VCOM Reference
with 30x MOTP Memory
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DVR
OUT Voltage Range V
OUT
V
SET
+
0.5V
20 V
Resolution RES 7 Bits
Integral Nonlinearity Error INL 0.125 LSB
Differential Nonlinearity Error DNL 0.125 LSB
AVDD to V
SET
Ratio AVDD/V
SET
20:1 V/V
V
AVDD
= 8V 3.35 67
Set External Resistance R
SET
V
AVDD
= 18V 6.75 135
kΩ
Set Current I
SET
Through R
SET
134 µA
Set Zero-Scale Error SET
ZSE
±2 LSB
Set Full-Scale Error SET
FSE
±4 LSB
LOGIC INPUTS (SDA, SCL)
Input High Voltage V
IH
0.7 x
V
DVDD
V
Input Low Voltage V
IL
0.3 x
V
DVDD
V
SDA Output Low Voltage V
OL
I
SINK
= 6mA 0.4 V
Input Leakage Current I
IH
, I
IL
0V or V
DVDD
-3 0.01 +3 µA
Input Capacitance 5 pF
I
2
C TIMING CHARCTERISTICS
Serial-Clock Frequency f
SCL
0 400 kHz
Bus Free Time Between STOP
and START Conditions
t
BUF
1.3 µs
Hold Time START Condition t
HD
,
STA
0.6 µs
SCL Pulse-Width Low t
LOW
1.3 µs
SCL Pulse-Width High t
HIGH
0.6 µs
Setup Time for a START
Condition
t
SU
,
STA
0.6 µs
Data Hold Time t
HD
,
DAT
0 900 ns
Data Setup Time t
SU
,
DAT
(Note 3) 100 ns
SDA and SCL Receiving Rise
Time
t
R
(Note 4)
20 +
0.1C
B
300 ns
SDA and SCL Receiving Fall
Time
t
F
(Note 4)
20 +
0.1C
B
300 ns
SDA Transmitting Fall Time t
F
(Note 4)
20 +
0.1C
B
250 ns
ELECTRICAL CHARACTERISTICS (continued)
(V
DVDD
= 3.3V, V
AVDD
= 16V, V
GND
= 0, R
SET
= 6.8kΩ, no load, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 1)
P1-P3P4-P6P7-P9P10-P12P13-P13

MAX9660ATA+T

Mfr. #:
Buy MAX9660ATA+T
Manufacturer:
Maxim Integrated
Description:
IC VREF PROGR VCOM 8TDFN
Lifecycle:
New from this manufacturer.
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