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MAX9672ETI+

更新时间： 2024-11-10 02:50:19
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美信 - MAXIM /
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24页 786K
描述
10-Bit, Programmable Gamma Reference Systems with MTP for TFT LCDs

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MAX9672ETI+ 数据手册

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19-4718; Rev 4; 2/11  
10-Bit, Programmable Gamma Reference  
Systems with MTP for TFT LCDs  
23/MAX9674  
General Description  
Features  
The MAX9672/MAX9673/MAX9674 output 12/14/16 volt-  
age references for gamma correction in TFT LCDs and  
one voltage reference for VCOM. Each gamma refer-  
ence voltage has its own 10-bit DAC and buffer to  
ensure a stable voltage. The VCOM reference voltage  
has its own 10-bit DAC and an amplifier to ensure a sta-  
ble voltage when critical levels and patterns are dis-  
played. The MAX9672/MAX9673/MAX9674 feature  
integrated multiple-time programmable (MTP) memory to  
store gamma and VCOM values on the chip, eliminating  
the need for external EEPROM. The MAX9672/  
MAX9673/MAX9674 support up to 300 write operations  
to the on-chip nonvolatile memory.  
o DAC Reference Input  
o 12/14/16-Channel Gamma Correction, 10-Bit  
Resolution  
o VCOM Driver  
o Integrated MTP Memory  
o Programmable VCOM Limits  
o 200mA Peak Current on Gamma Channels  
o 600mA Peak Current on VCOM Channel  
Ordering Information  
GAMMA  
CHANNELS  
PART  
PIN-PACKAGE  
The gamma outputs can drive 200mA peak transient  
current and settle within 1µs. The VCOM output can  
provide 600mA peak transient current and also settles  
within 1µs. The analog supply voltage range extends  
from 9V to 20V, and the digital supply voltage range  
extends from 2.7V to 3.6V.  
*
MAX9672ETI+  
MAX9673ETI+  
MAX9674ETI+  
12  
14  
16  
28 TQFN-EP  
*
28 TQFN-EP  
*
28 TQFN-EP  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Note: All devices are specified over the -40°C to +85°C temper-  
ature range.  
Gamma values and the VCOM value are programmed  
into registers through the I2C interface.  
Functional Diagram  
Applications  
REF  
AVDD  
TFT LCDs  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10  
10-BIT  
DAC  
GMA1  
10-BIT  
DAC  
Pin Configuration  
GMA2  
10-BIT  
DAC  
GMA3  
10-BIT  
DAC  
TOP VIEW  
GMA4  
10-BIT  
DAC  
GMA5  
21 20 19 18 17 16 15  
10-BIT  
DAC  
GMA6  
10-BIT  
DAC  
14  
13  
GMA9 22  
GMA3  
GMA2  
GMA7  
10-BIT  
DAC  
GMA10 23  
GMA8  
2
MTP  
MEMORY  
DAC  
REGISTERS  
10-BIT  
DAC  
I
C
12 GMA1  
GMA9  
24  
25  
26  
27  
28  
GMA11  
GMA12  
REGISTERS  
MAX9672  
MAX9673  
MAX9674  
10-BIT  
DAC  
GND  
GMA10  
GMA11  
GMA12  
GMA13*  
GMA14*  
GMA15**  
11  
10  
9
10-BIT  
DAC  
GMA13*  
GMA14*  
GMA15**  
AVDD  
10-BIT  
DAC  
AVDD_AMP  
VCOM_FB  
†
EP  
6
+
10-BIT  
DAC  
8
10-BIT  
DAC  
1
2
3
4
5
7
10-BIT  
DAC  
10-BIT  
DAC  
GMA16**  
AVDD_AMP  
VCOM  
10-BIT  
DAC  
THIN QFN  
(5mm × 5mm)  
AGND_AMP  
VCOM_FB  
DVDD  
SDA  
SCL  
A0  
MAX9672  
MAX9673  
MAX9674  
2
I
C
†
EP = EXPOSED PAD, CONNECT EP TO GROUND PLANE.  
*N.C. FOR THE MAX9672  
INTERFACE  
GND  
**N.C. FOR THE MAX9672 AND THE MAX9673  
*NOT AVAILABLE FOR THE MAX9672  
**NOT AVAILABLE FOR THE MAX9672 AND THE MAX9673  
GND  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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 		10-Bit, Programmable Gamma Reference Systems with MTP for TFT LCDs
MAX9673ETI+ MAXIM

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MAX9673ETI+G0E MAXIM

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 		Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-1, TQ
MAX9673ETI+T MAXIM

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 		Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-1, TQ
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 		10-Bit, Programmable Gamma Reference Systems with MTP for TFT LCDs
MAX9674ETI+ MAXIM

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 		Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-1, TQ
MAX9674ETI+G0E MAXIM

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 		Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-1, TQ
MAX9674ETI+TG0E MAXIM

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 		Analog Circuit, 1 Func, BICMOS, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220WHHD-1, TQ
MAX9679 MAXIM

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