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參數(shù)資料
| 型號： | BUF20800AIDCPR |
| 英文描述： | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| 中文描述： | 18通道伽瑪雙通道可編程的VCOM電壓發(fā)生器 |
| 文件頁數(shù)： | 15/27頁 |
| 文件大?。?/td> | 765K |
| 代理商： | BUF20800AIDCPR |
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SBOS329D JUNE 2005 REVISED OCTOBER 2006
www.ti.com
15
CONFIGURATION FOR 20 GAMMA CHANNELS
The V
COM
outputs can be used as additional gamma
references in order to achieve two additional gamma
channels (20 total). The V
COM
outputs will behave the
same as the OUT19 outputs when sourcing or sinking
smaller currents (see the Typical Characteristics,
Figure 4). The V
COM
outputs are better able to swing to the
positive rail than to the negative rail. Therefore, it is better
to use the V
COM
outputs for higher reference voltages, as
shown in Figure 14.
CONFIGURATION FOR 22 GAMMA
CHANNELS
In addition to the V
COM
outputs, the REFH and REFL OUT
outputs can also be used as fixed gamma references. The
output voltage will be set by the REFH and REFL input
voltages, respectively. Therefore, REFH OUT should be
used for the highest voltage gamma reference, and REFL
OUT for the lowest voltage gamma reference. A
22-channel solution can be created by using all 18 outputs,
the two V
COM
outputs, and both REFH/L OUT outputs for
gamma references—see Figure 15. However, the REFH
and REFL OUT buffers were designed to only drive light
loads on the order of 510mA. Driving capacitive loads is
not recommended with these buffers. In addition, the
REFH and REFL buffers must not be allowed to saturate
from sourcing/sinking too much current from REFH OUT
or REFL OUT. Saturation of the REFH and REFL buffers
results in errors in the voltages of OUT118 and V
COM
OUT12. The BUF01900, which is anticipated to be
released in Q3 ’05, can be used to provide a
programmable V
COM
output.
SDA
SCL
LD
A0
Analog
Digital
REFH
OUT17
V
COM
OUT1
REFL
D
Control IF
OUT18
OUT1
OUT2
RE14.8V
RE0.2V
D
15V
15V
0.2V
14.8V
2V5.5V
GMA 3
GMA 4
GMA 19
GMA 20
V
COM
OUT2
GMA 1
GMA 2
18 Gamma Channels
Source
Driver
BUF20800
Figure 14. 20 Gamma Channel Solution 2 V
COM
Channels Used as Additional Gamma Channels
相關PDF資料 |
PDF描述 |
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| BUF20820 | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| BUF20820AIDCPR | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| BUF20820AIDCPRE4 | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| BUF20800AIDCPRE4 | 功能描述:LCD Gamma緩沖器 18-Ch Vltg Generator w/2 Prog VCOM Chs RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 轉換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
| BUF20800ATDCPRQ1 | 功能描述:LCD Gamma緩沖器 AUTO CAT 18CH GAMMA VLTG GEN RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 轉換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
| BUF20800-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:18-CHANNEL GAMMA VOLTAGE GENERATOR WITH TWO PROGRAMMABLE VCOM CHANNELS |
| BUF20820 | 制造商:BB 制造商全稱:BB 功能描述:18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| BUF20820AIDCPR | 功能描述:LCD Gamma緩沖器 18-Ch Vltg Generator w/2 Prog VCOM Chs RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 轉換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
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