參數(shù)資料
型號: BUF11702PWP
文件頁數(shù): 26/28頁
文件大?。?/td> 501K
代理商: BUF11702PWP
BUF11702
10+1-CHANNEL LCD GAMMA CORRECTION BUFFER
SLOS359B
MARCH 2001
REVISED OCTOBER 2001
26
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
reference voltages
The reference voltages can be supplied externally via the connector J2 (not included) or generated onboard via
resistors R
1
to R
11
. Provision on the board for an external low side reference has been included so that the nega-
tive references can be referred to a voltage other than ground.
The reference ladder can be referred to either V
DD
(master supply voltage) or a secondary voltage, V
DD2
. This
allows a low noise or absolute reference voltage to be used for the LCD source driver
s DACs other than the
system voltage. If the secondary voltage is used, then jumper JP1 should be left open and jumper JP2 shorted. If
a ratiometric reference (proportional to the master supply voltage) is to be used, then jumper JP1 and JP2
should be shorted, feeding V
DD
through to the reference ladder.
output
The outputs of the BUF11702 are fed to connector J3 (not mounted). This enables the output voltages to be
monitored directly on the EVM or fed off-board for evaluation in a real system.
Onboard load resistors, R
23
to R
32
, connected to ground can also be mounted. These can be used to simulate
resistive loading of the LCD source driver.
Transient improving capacitors are frequently used in LCD panel applications, and so pads to mount these tran-
sient improving capacitors, C
6
to C
16
, have been included. Due to the possible magnitude of these capacitors,
pads have been placed between the output of the BUF11702 and these capacitors to mount nulling resistors,
R12 to R22. If the nulling resistors are not required, shorts could be placed instead of resistors.
The pads for R1 to R32 and capacitors C3 to C16 have been laid out to support 0805 or 1206 size components.
PowerPAD
The EVM has been laid out to support the PowerPAD feature of the BUF11702. An area is provided on the EVM,
under the BUF11702, for the exposed leadframe to be connected to. Eighteen vias are connected to the ground
plane of the EVM to reduce the thermal case to ambient resistance,
θ
CA
, significantly. See applications section
on general PowerPAD design considerations.
相關(guān)PDF資料
PDF描述
BUF11705 22 - V Supply, 10 + 1 Channel Gamma Correction Buffer
BUF11705AIPWPR 22 - V Supply, 10 + 1 Channel Gamma Correction Buffer
BUF12800 REFERENCE VOLTAGE GENERATOR for LCD GAMMA CORRECTION
BUF12800AIPWP REFERENCE VOLTAGE GENERATOR for LCD GAMMA CORRECTION
BUF12800AIPWPR REFERENCE VOLTAGE GENERATOR for LCD GAMMA CORRECTION
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BUF11702PWPG4 功能描述:LCD Gamma緩沖器 10+1 Ch Hi Current Buffer RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 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
BUF11702PWPR 功能描述:LCD Gamma緩沖器 10+1 Channel High Current Buffer RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 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
BUF11702PWPRG4 功能描述:LCD Gamma緩沖器 10+1 Channel High Current Buffer RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 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
BUF11704 制造商:BB 制造商全稱:BB 功能描述:18 - V SUPPLY MULTI - CHANNER GAMMA CORRECTION BUFFER
BUF11704AIPWP 功能描述:LCD Gamma緩沖器 18-V Supply Multi-Ch Correction RoHS:否 制造商:Maxim Integrated 輸入補償電壓: 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