BUF20800-Q1 Datasheet, PDF (5/32 Pages) Texas Instruments – 18-CHANNEL GAMMA VOLTAGE GENERATOR WITH TWO PROGRAMMABLE VCOM CHANNELS

BUF20800-Q1
www.ti.com
SBOS571 – AUGUST 2011
TYPICAL CHARACTERISTICS
At T_A = 25°C, V_S = 18 V, V_SD = 5 V, V_REFH = 17 V, V_REFL = 1V, R_L = 1.5 kΩ connected to ground, and C_L = 200pF, unless
otherwise noted.
ANALOG SUPPLY CURRENT vs TEMPERATURE
16
V_S = 18V
14
12 _{VS = 10V}
10
8
DIGITAL SUPPLY CURRENT vs TEMPERATURE
30
V_S = 5V
25
20
V_S = 3. 3 V
15
6
10
4
5
2
0
−40 −20
10
20
40
60
Temperature (°C)
Figure 1.
80 100
0
−40 −20
10
20
40
60
Temperature (°C)
Figure 2.
80 100
FULL−SCALE OUTPUT SWING
REFH =17V
REFL =1V
Code 3FF →000
Code 000 →3FF
Time (1ms/div)
Figure 3.
OUTPUT VOLTAGE vs OUTPUT CURRENT
18
17
16 OUT1018 (sourcing), Code =3FFh
V_REFL = 0.2 V, V_REFH = 17 V
15 _{RLOAD Connected to GND}
OUT19, V _COM12 (sourcing)
Code =3FFh
3 ^{OUT19, V COM12 (sinking)}
Code =000h
2 ^VREF L ^{= 1V, V}REFH^{= 17.8. V}
R_LOAD Connected to 18V
1
V_REFL= 1 V, V_REFH = 17.8. V
R_LOAD Connected to GND
OUT1018 (sin king) , Code =000 h
V_REFL = 0.2 V, 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.
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.
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.
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Product Folder Link(s): BUF20800-Q1
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