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BUF22821 Datasheet, PDF (3/25 Pages) Texas Instruments – Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
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BUF22821
www.ti.com
SBOS399 – JUNE 2007
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, TA = –40°C to +85°C.
At TA = +25°C, VS = +18V, VSD = +2V, RL = 1.5kΩ connected to ground, and CL = 200pF, unless otherwise noted.
BUF22821
PARAMETER
CONDITIONS
MIN
TYP
MAX
ANALOG GAMMA BUFFER CHANNELS
Reset Value
Code 512
9
OUT 1–22 Output Swing: High
Code = 1023, Sourcing 10mA
17.7
17.85
OUT 1–22 Output Swing: Low
Code = 0, Sinking 10mA
0.07
0.2
STATINH Output Swing: High
STATINL Output Swing: Low
VCOM1, 2 Output Swing: High
VCOM1, 2 Output Swing: Low
Continuous Output Current
VIN = 18V, Sourcing 10mA
VIN = 0V, Sinking 10mA
Code = 1023, Sourcing 100mA
Code = 0, Sinking 100mA
Note (1)
17.7
17.85
0.17
0.2
13
16.2
0.6
2
30
Output Accuracy
±20
±50
vs Temperature
Code 512
±25
Integral Nonlinearity
INL
0.3
Differential Nonlinearity
DNL
0.3
Load Regulation, 10mA
OTP MEMORY
REG
Code 512 or VCC/2, IOUT = +5mA to –5mA Step
0.5
1.5
Number of OTP Write Cycles
16
Memory Retention
100
ANALOG POWER SUPPLY
Operating Range
9
20
Total Analog Supply Current
Over Temperature
IS
Outputs at Reset Values, No Load
12
17
18
DIGITAL
Logic 1 Input Voltage
VIH
Logic 0 Input Voltage
VIL
Logic 0 Output Voltage
VOL
Input Leakage
ISINK = 3mA
0.7 × VSD
0.15
±0.01
0.3 × VSD
0.4
±10
Clock Frequency
fCLK
Standard/Fast Mode
400
High-Speed Mode
3.4
DIGITAL POWER SUPPLY
Operating Range
Digital Supply Current
Over Temperature
VSD
2.0
5.5
ISD Outputs at Reset Values, No Load, Two-Wire Bus Inactive
115
150
115
TEMPERATURE RANGE
Specified Range
–40
+85
Operating Range
Junction Temperature < +125°C
–40
+95
Storage Range
–65
+150
Thermal Resistance(1)
θJA
HTSSOP-38
Note (1)
40
UNIT
V
V
V
V
V
V
V
mA
mV
µV/°C
Bits
Bits
mV/mA
Cycles
Years
V
mA
mA
V
V
V
µA
kHz
MHz
V
µA
µA
°C
°C
°C
°C/W
(1) Thermal pad attached to printed circuit board (PCB), 0lfm airflow, and 76mm × 76mm copper area.
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