NCS12802 Datasheet PDF - ON Semiconductor
Part Number | NCS12802 | |
Description | 12-Channel I2C Programmable Gamma Voltage Reference Generator | |
Manufacturers | ON Semiconductor | |
Logo | ||
There is a preview and NCS12802 download ( pdf file ) link at the bottom of this page. Total 21 Pages |
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12-Channel I2C
Programmable Gamma
Voltage Reference
Generator with Integrated
Auto-read
The NCS12802 is a 12− channel programmable voltage reference
generator providing the gamma correction references to the
TFT−LCD panel through the source driver circuit.
The twelve output voltage references are programmed through an
I2C interface which can operate at standard and high speed. The output
buffers can be finely tuned due to the 10 bit DAC precision (1024
steps). In addition, the NCS12802 features an auto−read function
which allows uploading binary data from an external EEPROM. To
support this capability, the device can act as both slave and master I2C.
In order to accelerate the dynamic correction process, the
NCS12802 has two separate register banks. It can simultaneously
store two different curves.
The NCS12802 is proposed in a QFN24 package and an operating
temperature range from −40°C to +95°C.
Features
• 12−Channel Gamma Generator
• 1024−step Resolution (10 bits)
• Dual Bank
• Rail−to−Rail Outputs
• Auto−read Function to Communicate with External EEPROM
• Two Wire Digital Programming Interface
• Low Power Supply Current of 800 mA per Channel
• Digital Power Supply from 2.3 V to 5.0 V
• Operating Voltage from 9 V to 17.5 V
• I2C Programming Interface (Standard and Fast−Speed)
• ESD Human Body Model Protection 2 kV,
Machine Model 300 V
• Operating Temperature Range: −40°C to +95°C
• Available in a QFN−24 Package with Exposed Pad
• This is a Pb−Free Device*
Typical Application
• TFT−LCD TV Panels
• LCD Monitor Panels
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
24 PIN QFN, 4x4
MN SUFFIX
CASE 485L
MARKING
DIAGRAM
1 NCS
12802
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device
Package
Shipping†
NCS12802MNTXG QFN−24 3000 / Tape &
(Pb−Free)
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2012
June, 2012 − Rev. 0
1
Publication Order Number:
NCS12802/D
|
|
NCS12802
ELECTRICAL CHARACTERISTICS AVDD = +15 V, DVDD = 3.3 V, RL = 1.5 kW connected to ground, TA = 25°C, CL = 200 pF,
unless otherwise specified
Symbol
Characteristics
Conditions
Min Typ Max Unit
ANALOG
Vrst
Voh
Vol
Io
INL
DNL
DG
LReg
Reset Value
Buffer Output Swing – High
(TA = −40°C to + 95°C)
Buffer Output Swing – Low
(TA = −40°C to + 95°C)
Continuous Output Current
Integral Non−linearity
Differential Non−linearity
Gain Error
Load Regulation
TD Program to Out Delay
Tbksel Bank Switching Delay
I2C ELECTRICAL CHARACTERISTICS
All outputs set to Code 0000h
OUT1 to OUT12 – Code 03FFh – Sourcing 10 mA
OUT1 to OUT12 – Code 03FFh – Sourcing 5 mA
OUT1 to OUT12 – Code 0000h – Sinking 10 mA
OUT1 to OUT12 – Code 0000h – Sinking 5 mA
Code 3FFh
Vout = GND + 0.3 V to AVDD − 0.3 V
Vout = GND + 0.3 V to AVDD − 0.3 V
Vout = GND + 0.3 V to AVDD − 0.3 V
10 mA, All Buffers Vout = AVDD / 2,
Iout = +10 mA to −10 mA 5 mA Step
LD Pin = 0, Vout = 50% of Code 1023, AVDD = 9 V
0.015 0.12
14.7
14.8 14.9
0.15
0.075
0.25
0.15
30
0.3
0.3
0.12
0.5
2
1 3.5
V
V
V
mA
LSB
LSB
%
mV/
mA
ms
ms
FCLK
Clock Frequency
(−40°C to +95°C)
Standard/Fast Mode
High Speed Mode
400 kHz
3.4 MHz
VIL Low Level Input Voltage
SDA or SCL
0.3 x
DVDD
V
VIH High Level Input Voltage
SDA or SCL
0.7 x
DVDD
V
VOL Low Level Output Voltage
(Logic 0)
Isink = 3 mA
0.1 0.4
V
FMEM EEPROM Clock Speed
Master Mode
66 100 kHz
ANALOG POWER SUPPLY
IAVDD Analog Supply Current
Outputs at Reset Values, No load
Over temperature from −40°C to 95°C
2.8 7 mA
8
PSRR
Power Supply Rejection
Ratio
F = 70 kHz, Vac = 1 VPP on AVDD line
−75 dB
DIGITAL POWER SUPPLY
IDVDD Digital Supply Current
Outputs at Reset Values, No load, Two Wires Inactive
Over temperature from −40°C to 95°C
95 250 mA
95
DIGITAL VOLTAGE LEVELS
VIH High Level Input Voltage
(Logic 1)
0.7 x
DVDD
V
VIL Low Level Input Voltage
(Logic 0)
0.3 x
DVDD
V
Ileak
POR
Input Leakage Current
Power On Reset
±0.01 ±10
1.1 1.5 1.7
mA
V
NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit
board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared
operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification
limit values are applied individually under normal operating conditions and not valid simultaneously.
7. Observe maximum power dissipation. Exposed thermal die is soldered to the PCB using thermal vias.
http://onsemi.com
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Information | Total 21 Pages | |
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