BUF12800 Datasheet, PDF (4/20 Pages) Burr-Brown (TI) – REFERENCE VOLTAGE GENERATOR for LCD GAMMA CORRECTION

BUF12800
SBOS315 − DECEMBER 2004
www.ti.com
TYPICAL CHARACTERISTICS
At TA = +25°C, VS = 18V, VSD = 5V, VREFH = 17V, VREFL = 1V, RL = 1.5kΩ connected to ground, and CL = 200pF, unless otherwise noted.
ANALOG SUPPLY CURRENT vs TEMPERATURE
10
V_S = 18V
8
V_S = 10V
6
4
2
0
−40 −20
0
20
40
60
80
100
Temperature (_ C)
Figure 1
FULL−SCALE OUTPUT SWING
REFH = 17V
REFL = 1V
Code 3FF →000
Code 000 →3FF
Time (1µs/div)
Figure 3
INTEGRAL NONLINEARITY ERROR vs INPUT CODE
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
0
200
400
600
800
1000
Input Code
Figure 5
4
DIGITAL SUPPLY CURRENT vs TEMPERATURE
30
V_S = 10V
25
V_SD = 5V
20
15
V_SD = 3.3V
10
5
0
−40 −20
0
20
40
60
80
100
Temperature (_ C)
Figure 2
OUTPUT VOLTAGE vs OUTPUT CURRENT
18
Channel A (sourcing), Code = 3FFh
V_REFL = 1V, V_REFH = 17.8V
17
R_LOAD Connected to GND
Channel L (sourcing), Code = 3FFh
16 _{VREFL = 0.2V, VREFH = 17V}
R_LOAD Connected to GND
Channel L (sinking), Code = 000h
2 ^{Channel A (sinking), Code = 000h}
V_REFL = 1V, V_REFH = 17.8V
R_LOAD Connected to 18V
1
V_REFL = 0.2V, V_REFH = 17V
R_LOAD Connected to 18V
0
0 10 20 30 40 50 60 70 80 90 100
Output Current (mA)
Figure 4
DIFFERENTIAL NONLINEARITY ERROR vs INPUT CODE
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
0
200
400
600
800
1000
Input Code
Figure 6