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BUF08821 Datasheet, PDF (3/27 Pages) Texas Instruments – Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
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www.ti.com ................................................................................................................................................. SBOS438C – AUGUST 2008 – REVISED AUGUST 2009
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.
BUF08821
PARAMETER
CONDITIONS
MIN
TYP
MAX
ANALOG GAMMA BUFFER CHANNELS
Reset Value
Code 512
9
OUT 1–8 Output Swing: High
Code = 1023, Sourcing 10mA
17.7
17.85
OUT 1–8 Output Swing: Low
Code = 0, Sinking 10mA
0.07
0.3
VCOM1, 2 Output Swing: High
BUF08821A
BUF08821B (1)
Code = 1023, Sourcing 100mA
Code = 511, Sourcing 100mA
13
16.2
8.96
VCOM1, 2 Output Swing: Low
BUF08821A
BUF08821B (1)
Continuous Output Current
Code = 0, Sinking 100mA
Code = 384, Sinking 100mA
See Note (2)
0.6
2
6.75
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
IS
Outputs at Reset Values, No Load
Over Temperature
4.6
7
9
DIGITAL
Logic 1 Input Voltage
VIH
Logic 0 Input Voltage
VIL
Logic 0 Output Voltage
VOL
Input Leakage
ISINK = 3mA
0.7 × VSD
–0.5
0.15
±0.01
6
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(2)
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
Thermal Resistance(3)
θJA
HTSSOP-20
See Note (2)
–65
+150
+40
(1) BUF08821B output swing is limited internally. Bits 7, 8, and 9 are fixed at '011'.
(2) Observe maximum junction temperature limit.
(3) Thermal pad attached to printed circuit board (PCB), 0lfm airflow, and 76mm × 76mm copper area.
UNIT
V
V
V
V
V
V
V
V
V
mA
mV
μV/°C
LSB
LSB
mV/mA
Cycles
Years
V
mA
mA
V
V
V
μA
kHz
MHz
V
μA
μA
°C
°C
°C
°C/W
Copyright © 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): BUF08821
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