MAX9697
12-Channel Programmable Gamma Reference System
12-Channel Programmable Gamma Reference System with SPI Interface
Part Details
- 12 Programmable Reference Voltages with 10-Bit Resolution
- Controlled Ramp-Up of Reference Voltages
- Adjustable LDO
- Current-Sense Comparator
- 10V to 18V Analog Supply Range
- 2.3V to 3.6V Digital Supply Range
- SPI Interface
The MAX9697 12-channel programmable gamma reference system provides 12 programmable reference voltages with 10-bit resolution. These voltages can be used for gamma correction in TFT-LCD displays, as a VCOM reference, or as sources for level shifter inputs. Each reference voltage features a 10-bit digital-to-analog converter (DAC) and buffer with high peak current to reduce the recovery time of the output voltages when critical levels and patterns are displayed.
An adjustable, low-dropout linear regulator (LDO) further improves the stability and accuracy of the DAC outputs by creating the DAC reference. The MAX9697's integrated gate-driver output controls an external p-channel FET to slowly turn on the linear regulator so that the reference voltages ramp up in a controlled manner.
The MAX9697 has a serial peripheral interface (SPI™) bus for programming the reference voltages. The device also has a current-sense comparator to detect an abnormally high supply current in other areas of the application circuit.
The MAX9697 is available in a 28-pin TQFN package and is specified for operation over the -40°C to +125°C temperature range.
Applications
- TFT-LCD Panels
Documentation
Reliability Data 1
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Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA).
Request an NDAHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Product 4 | ||
| MAX9694 | 14 Programmable Gamma Reference Buffers with Four Static References for TFT LCDs | |
| MAX9591 | 14 Programmable Gamma Reference Buffers with Four Static References for TFT-LCD Displays | |
| MAX9590 | 14 Programmable Gamma Reference Buffers with 4 Static References for TFT-LCD Displays | |
| MAX5679 | Digitally Programmable LCD Gamma Reference Generator with Digital Voltage Reference | |
| Programmable Gamma Buffers 1 | ||
| MAX9669 | PRODUCTION | 10-Bit Programmable Gamma Reference System with MTP for TFT LCDs |
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