LMC6009MTX National Semiconductor, LMC6009MTX Datasheet - Page 5

• Manufacturer Part Number: LMC6009MTX
• Description: IC AMP BUFFER 9 CHANNEL 48-TSSOP
• Manufacturer: National Semiconductor

Specifications of LMC6009MTX

• Display Type: LCD
• Current - Supply: 3.5mA
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -20°C ~ 75°C
• Mounting Type: Surface Mount
• Package / Case: 48-TSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Configuration: -
• Digits Or Characters: -
• Other names: *LMC6009MTX

Block Diagram
Applications
The LMC6009 is useful for buffering the nine reference
voltages for gamma correction in a TFT-LCD as shown in
Figure 7 . The A/B channel inputs allow the user to alternate
two sets of gamma references to compensate for asymmetri-
cal Gamma characteristic during Row Inversion. The
LMC6009 eliminates the need for nine external switches or
an 18-to-9 multiplexer.
FIGURE 6. Block Diagram of LMC6009
5
Since the buffers in the LMC6009 draw extremely low bias
current (1.5 µA max), large resistance values can be used in
the reference voltage string. This allows the power dissipa-
tion in the gamma reference circuit to be minimized. The
nine buffers are guaranteed to deliver 80 mA to the load,
allowing the pixel voltages of the TFT-LCD to settle very
quickly.
DS012533-8
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