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ADD8710-ADD8710ARUZ-ADD8710ARUZ-REEL
10-Channel Gamma Buffer with Vcom Driver Data Sheet
10-Channel Gamma Buffer
with VCOM Driver
Rev. 0
FEATURES
Single-supply operation: 4.5 V to 16.5 V
Upper/lower buffers swing to VS/GND
Gamma continuous output current: >10 mA
VCOM peak output current: 250 mA
Offset voltage: 12 mV
Slew rate: 8 V/µs
Unity gain stable with large capacitive loads
Supply current: 700 µA per amplifier
Compact 28-lead TSSOP
Pb-free package
Drop-in replacement for BUF11702
APPLICATIONS
TFT LCD monitor panels
TFT LCD notebook panels
GENERAL DESCRIPTION The ADD8710 is a low cost, 10-channel gamma buffer with a
VCOM driver that operates from a single supply. The part is
designed for high resolution TFT LCD panels, and is built on an
advanced, high voltage CBCMOS process.
The gamma buffers have a high slew rate, minimum 10 mA
output current, and a high capacitive load drive capability. The
VCOM buffer is capable of delivering 250 mA of peak current,
and can also drive large capacitive loads. The ADD8710 offers
wide supply range and offset voltages below 12 mV.
The ADD8710 is specified over the −40°C to +85°C
temperature range and is available in a Pb-free 28-lead
TSSOP package.
GND
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUTCOM
ADD8710
GND
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
IN9
IN10
INCOM04889-0-001
NC = NO CONNECT Figure 1. 28-Lead TSSOP (RU Suffix)
FUNCTIONAL BLOCK DIAGRAM VS
GND
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
OUTCOMFigure 2.
TABLE OF CONTENTS Electrical Characteristics.................................................................3
Absolute Maximum Ratings............................................................4
ESD Caution..................................................................................4
Typical Performance Characteristics..............................................5
Outline Dimensions.......................................................................10
Ordering Guide..........................................................................10
REVISION HISTORY 6/04—Revision 0: Initial Version
ELECTRICAL CHARACTERISTICS
VS = 16 V, VCM = VS/2, TA @ 25°C, unless otherwise noted.
Table 1. ABSOLUTE MAXIMUM RATINGS
Table 2. Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods may
affect device reliability.
Table 3. Package Characteristics θJA is specified for worst case conditions, i.e., θJA is specified for devices
soldered on to a circuit board for surface mount packages.
ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
TYPICAL PERFORMANCE CHARACTERISTICS
VOS (mV)
NUMBE
OF UNITS04889-0-003
Figure 3. Input Offset Voltage
100217224692766306333657395TCVOS (µV/°C)
NUMBE
R OF UNITS04889-0-004
51459151878Figure 4. Input Offset Voltage Drift Distribution
TEMPERATURE (°C)
T OFFSET VOLTA
GE (SUPPLY VOLTAGE (V)
CURRE
NT/BUFFE
R (mA)
0.7
Figure 6. Supply Current/Buffer v. Supply Voltage
TEMPERATURE (°C)
CURRE
NT/BUFFE
R (mA)0.8
Figure 7. Supply Current/Buffer vs. Temperature
TEMPERATURE (°C)
INP
T BIAS
CURRE
NT (nA)120–40–20020406080100
(dB)
100k10k1k1001M10M
FREQUENCY (Hz)Figure 9. Power Supply Rejection Ratio vs. Frequency
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)Figure 10. Chan 1-5 Output Voltage Low vs. I Load
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)Figure 11. Chan 6-10 Output Voltage Low vs. I Load
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)Figure 12. Chan VCOM Output Voltage Low vs. I Load
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)Figure 13. Chan 1 Output Voltage High vs. I Load
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)Figure 14. Chan 2-5 Output Voltage High vs. I Load
