BUF08630_14 Datasheet, PDF (21/35 Pages) Texas Instruments – Programmable Gamma-Voltage Generator and High Slew Rate VCOM

BUF08630
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SBOS515A – OCTOBER 2010 – REVISED AUGUST 2012
Table 8 lists the approximate values (±15%) of the
internal resistors in the feedback configuration
depicted in Figure 25, for a total resistive value of
approximately 13 kΩ (±15%).
For switch positions 2, 3, 4, 5, 6, and 7, the buffer is
configured in an internal inverting gain, as shown in
Figure 26.
Table 8. Feedback Resistor Values
RESISTOR
R_A
R_B
R_C
R_D
R_E
R_F
R_G
(1) All values are ±15%.
TYPICAL VALUE⁽¹⁾
(Ω)
6502.5
2165
1083
651.25
432.5
310.625
1858.75
Feedback
R₁ int
R₂ int
V_COM
V_COM
Figure 26. Configuration for Switch Positions
2, 3, 4, 5, 6, 7
GAIN
G=1
G=2
G=3
G=4
G=5
G=6
Table 9. Gain Select Resistor Ratio (±15%)
VALUE OF R₂ BASED ON SWITCH POSITIONS
6502 Ω
8667 Ω
9750 Ω
10401 Ω
10834 Ω
11144 Ω
VALUE OF R₁ BASED ON SWITCH POSITIONS
6501 Ω
4336 Ω
3253 Ω
2601 Ω
2169 Ω
1858 Ω
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