- 您现在的位置：买卖IC网 > PDF目录2068 > DS3514T+T&R (Maxim Integrated Products)IC I2C GAMMA/VCOM BUFF 48-TQFN PDF资料下载
参数资料
| 型号： | DS3514T+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/21页 |
| 文件大小： | 0K |
| 描述： | IC I2C GAMMA/VCOM BUFF 48-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | TFT-LCD 面板：伽玛缓冲器，VCOM 驱动器 |
| 输出类型： | 满摆幅 |
| 电路数： | 14 |
| 电流 - 电源： | 5mA |
| 电流 - 输出 / 通道： | 4mA |
| 电压 - 电源，单路/双路(±)： | 9 V ~ 15 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-WFQFN 裸露焊盘 |
| 供应商设备封装： | 48-TQFN-EP（7x7） |
| 包装： | 带卷 (TR) |
DS3514
I2C Gamma and VCOM Buffer with EEPROM
12
______________________________________________________________________________________
Map, the Latch A registers for each channel are
accessed through memory addresses 00–1Ch. Then,
like the other modes, the LD pin determines when the
DACs are updated. If the LD signal is high, Latch B is
flow-through and the DAC is updated immediately. If
LD is low, Latch B is loaded from Latch A after a low-to-
high transition on the LD pin. This latter method allows
the timing of the DAC update to be controlled by an
external signal pulse.
VCOM/Gamma Channel Outputs
As illustrated in the
Block Diagram, the gamma channel
outputs are equivalent to a 10-bit digital potentiometer
(DAC) with a buffered output. The VCOM channel is
equivalent to an 8-bit digital potentiometer (DAC) with a
buffered output. The VCOM channel’s digital poten-
tiometer is composed of 255 equal resistive elements.
The relationship between output voltage and DAC set-
ting is illustrated in Table 3a. Unlike the gamma chan-
nels, the VCOM channel is capable of outputting a
range of voltages including both references (VRH and
VRL). Each of the gamma channel digital potentiome-
ters, on the other hand, are composed of 1024 equal
resistive elements. The extra resistive element prohibits
one of the rails from being reached. In particular,
gamma channel outputs GM1–GM7 can span from
(and including) GLL to 1 LSB away from GLM.
Likewise, gamma channel outputs GM8–GM14 span
from (and including) GHM to 1 LSB away from GHH.
The relationship between output voltage and DAC set-
ting for the gamma channels are also illustrated in
Table 3b.
Standby Mode
Standby mode (not to be confused with the three
DS3514 operating modes) can be used to minimize
current consumption. Standby mode is entered by set-
ting the STANDBY bit, which is the MSB of register 41h.
The VCOM and gamma outputs are placed in a high-
impedance state. Current drawn from the VDD supply in
this state is specified as IDDQ.
The DS3514 continues to respond to I2C commands,
and thus draws some current from VCC when I2C activi-
ty is occurring. When the I2C interface is inactive, cur-
rent drawn from the VCC supply is specified as ICCQ.
Thermal Shutdown
As a safety feature, the DS3514 goes into a thermal
shutdown state if the junction temperature ever reaches
SETTING
(HEX)
VCOM OUTPUT VOLTAGE
00h
VRL
01h
VRL + (1/255) x (VRH - VRL)
02h
VRL + (2/255) x (VRH - VRL)
03h
VRL + (3/255) x (VRH - VRL)
0Fh
VRL + (15/255) x (VRH - VRL)
3Fh
VRL + (63/255) x (VRH - VRL)
7Fh
VRL + (127/255) x (VRH - VRL)
FDh
VRL + (253/255) x (VRH - VRL)
FEh
VRL + (254/255) x (VRH - VRL)
FFh
VRH
Table 3a. VCOM DAC Voltage/Data
Relationship for Selected Codes
Table 3b. Gamma DAC Voltage/Data Relationship for Selected Codes
SETTING
(HEX)
GM1–GM7 OUTPUT VOLTAGE
GM8–GM14 OUTPUT VOLTAGE
000h
GLM + (0 + 1) x ((GLL - GLM)/1024)
GHM + (0 + 1) x ((GHH - GHM)/1024)
001h
GLM + (1 + 1) x ((GLL - GLM)/1024)
GHM + (1 + 1) x ((GHH - GHM)/1024)
002h
GLM + (2 + 1) x ((GLL - GLM)/1024)
GHM + (2 + 1) x ((GHH - GHM)/1024)
003h
GLM + (3 + 1) x ((GLL - GLM)/1024)
GHM + (3 + 1) x ((GHH - GHM)/1024)
00Fh
GLM + (15 + 1) x ((GLL - GLM)/1024)
GHM + (15 + 1) x ((GHH - GHM)/1024)
03Fh
GLM + (63 + 1) x ((GLL - GLM)/1024)
GHM + (63 + 1) x ((GHH - GHM)/1024)
07Fh
GLM + (127 + 1) x ((GLL - GLM)/1024)
GHM + (127 + 1) x ((GHH - GHM)/1024)
0FFh
GLM + (255 + 1) x ((GLL - GLM)/1024)
GHM + (255 + 1) x ((GHH - GHM)/1024)
3FDh
GLM + (1021 + 1) x ((GLL - GLM)/1024)
GHM + (1021 + 1) x ((GHH - GHM)/1024)
3FEh
GLM + (1022 + 1) x ((GLL - GLM)/1024)
GHM + (1022 + 1) x ((GHH - GHM)/1024)
3FFh
GLL
GHH
相关PDF资料 |
PDF描述 |
|---|---|
| EL1881CS-T13 | IC VIDEO SYNC SEPARATOR 8-SOIC |
| EL1883IS-T13 | IC VID SYNC SEPARATOR HORZ 8SOIC |
| EL2250CS-T13 | IC OP AMP DUAL 125MHZ 8-SOIC |
| EL4093CSZ-T7 | IC VIDEO AMP 300MHZ 16-SOIC |
| EL4332CSZ-T13 | MUX/AMP TRIPLE 2:1 300MHZ 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3516FP000 | 制造商:Thomas & Betts 功能描述:30A,CON,4P5W,MG,516,3PY120V |
| DS3516FR000 | 制造商:Thomas & Betts 功能描述:30A,REC,4P5W,MG,516,3PY120V |
| DS3516FRAB0 | 制造商:Thomas & Betts 功能描述:30A,REC,4P5W,MG,516,AB0,3PY120V |
| DS3516FRS00 | 制造商:Thomas & Betts 功能描述:30A,REC,4P5W,MG,516,STR,3PY120V |
| DS3516FRSB0 | 制造商:Thomas & Betts 功能描述:30A,REC,4P5W,MG,516,SB0,3PY120V |
发布紧急采购，3分钟左右您将得到回复。