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參數(shù)資料
| 型號(hào)： | BUF16820 |
| 英文描述： | 14-Channel GAMMA VOLTAGE GENERATOR with Programmable VCOM Outputs and OTP Memory |
| 中文描述： | 14通道伽瑪電壓發(fā)生器具有可編程威科姆輸出和OTP存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 17/30頁(yè) |
| 文件大?。?/td> | 681K |
| 代理商： | BUF16820 |
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SBOS356A FEBRUARY 2006 REVISED OCTOBER 2006
www.ti.com
17
CONFIGURATION FOR 16 GAMMA CHANNELS
The V
COM
outputs can be used as additional gamma
references in order to achieve two additional gamma
channels (16 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 16.
CONFIGURATION FOR 18 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 is 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. An
18-channel solution can be created by using all 14 outputs,
the two V
COM
outputs, and both REFH/L OUT outputs for
gamma references; see Figure 17. However, the REFH
and REFL OUT buffers were designed to only drive light
loads on the order of 5mA to 10mA. 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 OUT114,
V
COM1
, and V
COM2
. The BUF01900 (anticipated release in
Q2 ‘06), can be used to provide a programmable V
COM
output.
SDA
SCL
LD
A0
Analog
Digital
REFH
OUT13
V
COM1
REFL
D
Control IF
OUT14
OUT1
OUT2
REFH OUT
17V
REFL OUT
0.2V
D
O
P
18V
2V to 5.5V
18V
0.2V
17.8V
GMA 3
GMA 4
GMA 15
GMA 16
V
COM2
GMA 1
GMA 2
2 V
Channels plus
14 Gamma Channels
Source
Driver
BUF16820
Figure 16. 16 Gamma Channel Solution—2 V
COM
Channels Used as Additional Gamma Channels
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BUF16820AIDAPR | 14-Channel GAMMA VOLTAGE GENERATOR with Programmable VCOM Outputs and OTP Memory |
| BUF16820AIDAPRG4 | 14-Channel GAMMA VOLTAGE GENERATOR with Programmable VCOM Outputs and OTP Memory |
| BUF20800 | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| BUF20800AIDCPR | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
| BUF20820 | 18-Channel GAMMA VOLTAGE GENERATOR with Two Programmable VCOM Channels |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BUF16820AIDAPR | 功能描述:LCD Gamma緩沖器 14-Ch Vltg Generator w/2 Prog VCOM Out RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
| BUF16820AIDAPRG4 | 功能描述:LCD Gamma緩沖器 14-Ch Vltg Generator w/2 Prog VCOM Out RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube |
| BUF16821 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory |
| BUF16821_1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory |
| BUF16821A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory |
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