MAX9660 Evaluation Kit
Figure 2. Advanced I 2 C User Interface Window (2-Wire Interface Tab)
Detailed Description of Hardware
The MAX9660 evaluation kit (EV kit) demonstrates the
MAX9660 programmable VCOM voltage buffer in an 8-
pin TDFN surface-mount package with an exposed
pad. EV kit applications include e-paper display pan-
els, VCOM backplane voltage calibration in TFT-LCD
panels, such as those found in high-resolution TVs and
high-end monitors. A 7-bit digital-to-analog converter
(DAC) sinks current from an external resistor-divider
(R14 and R15) to set a VCOM reference voltage. An
external resistor (R13) sets the full-scale range of sink-
ing current. The IC can drive ±100mA continuous cur-
rent and up to ±900mA peak current. The desired DAC
value can be stored in nonvolatile MOTP memory and
is recalled at each power-up. The EV kit operates from
an 8V to 20V DC power supply that supplies up to 1A.
The MAX9660 EV kit features a USB-to-I 2 C interface cir-
cuit using Maxim ’s MAXQ2000 microcontroller and
MAX3394E level translator. The interface circuit pro-
vides 3.3V to the digital DVDD input from the USB
power. The EV kit can also connect to a user-supplied
I 2 C interface circuit for stand-alone MAX9660 operation.
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