CXLC8979由12+1+1通道缓冲靶组成，以满足薄膜晶体管液晶显示器（TFT-LCD）的需要。该装置包括12个gamma缓冲器、1个Vcom缓冲器和1个可通过I2 C接口编程的修复操作。它包含两个寄存器组，可以存储两组不同的gamma和VCOM值。每个缓冲器能够驱动重电容负载并提供大电流负载（Vcom:100mA，Gammas:25mA）
12+1+1频道：
12通道轨对轨可编程伽马缓冲器
每个通道10位分辨率
每个通道的25毫安输出电流
1通道轨对轨Vcom缓冲器：
10位可调输出
输出电流±100mA
输出短路电流±300毫安
50V/μs转换率
可编程VCOM限制
1通道轨对轨维修操作：
30mA输出电流
输出短路±100mA
使用BKSEL选择哪个银行数据输出的两个银行寄存器
2线I2 C从模式接口
非易失性存储器（NVM）存储设置
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[ CXLC8979 ]
目录
7.相关产品
产品概述 返回TOP
The CXLC8979 consists of 12+1+1 channel buffers target toward the needs of thin film transistor liquid crystal display (TFT LCD). This device incorporates 12 gamma buffers, one Vcom buffer and one repair op which can be programmed through I2 C interface. It contains two register banks which can store two different sets of gamma and VCOM values. Each buffer is capable of driving heavy capacitive loads and offering large current loading (Vcom: 100mA, Gammas: 25mA). The CXLC8979 is available in the QFN4X4-24 package.
产品特点 返回TOP
„ Supply Operation Range : 9V to 20V
„ 12+1+1 Channels :
--- 12 Channel Rail-to-Rail Programmable Gamma Buffers
Š 10 bits Resolution for each Channel
Š 25mA Output Current for each Channel
---1 Channel Rail-to-Rail Vcom Buffer:
Š 10 Bits Adjustable Output
Š ±100mA Output Current
Š ±300mA Output Short-Circuit Current
Š 50V/μs Slew Rate
Š Programmable VCOM Limits
---1 Channel Rail-to-Rail Repair OP:
Š ±30mA Output Current
Š ±100mA Output Short
-Circuit Current Š 15V/μs Slew Rate
---2 Banks Registers Using BKSEL to Select which Bank Data Output
„ 2-Wire I2 C Slave Mode Interface
„ Non-Volatile Memory (NVM) Store Setting (at Least 100 Re-Write Times)
„ QFN4X4-24 Package
应用范围 返回TOP
„ TFT-LCD Monitors
„ LCD Televisions
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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ntegrated Buffer |
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|
Part NO. |
VDD (V) min |
VDD (V) max |
CH Vr+ Vcom |
IOUT (mA) Vr,Vcom |
S/R (V/μs） Vr,Vcom |
BW (MHz） Vr,Vcom |
ISC (mA) Vr,Vcom |
Note |
Package |
|
6.5 |
18 |
1 |
100 |
20 |
19 |
260 |
SMBus, Rail-to-Rail Output |
TDFN3X3-10 |
|
|
9 |
20 |
14+1 |
25, 100 |
16, 70 |
10, 19 |
100, 260 |
Rail-to-Rail Output, SMBus,2 Banks MTP |
QFN5X5-32 |
|
|
6.5 |
19.5 |
18+1 |
30, 100 |
16, 80 |
9, 15 |
120, 300 |
Rail-to-Rail Output |
TQFP7X7-48/(FD) |
|
|
6.5 |
19.5 |
14+1 |
30, 100 |
16, 80 |
9, 15 |
120, 300 |
Rail-to-Rail Output |
TQFP7X7-48/(FD) |
|
|
7 |
20 |
12+1 |
25, 100 |
16, 50 |
30 |
100, 300 |
Rail-to-Rail Output, SMBus,2 Banks REG |
QFN4X4-24 |
|
|
7 |
20 |
16+2 |
25, 100 |
16, 50 |
30 |
100, 300 |
Rail-to-Rail Output, SMBus,2 Banks MTP |
QFN5X5-28 |
|
|
7 |
20 |
12+1+1 |
25, 100 |
16, 50 |
30 |
100, 300 |
Rail-to-Rail Output, SMBus,Banks MTP, CRC |
QFN4X4-24 |
|
|
6.5 |
18 |
14+1 |
25, 100 |
20, 20 |
10, 20 |
75, 140 |
Rail-to-Rail Output,SMBus ,2 Banks MTP, Checksum |
TQFN5X5-32 |
|
|
7 |
18 |
1 |
100 |
23 |
20 |
270 |
SMBus,Rail-to-Rail Output |
TDFN3X3-8 |
|
|
7 |
18 |
1 |
100 |
-- |
-- |
-- |
SMBus, VCOM REF |
TDFN3X3-8 |
|
|
7 |
20 |
8+1 |
25, 100 |
16, 50 |
30 |
100, 300 |
SMBus, Rail-to-Rail Output,2 Bank MTP |
QFN4X4-24 |
|
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