DS3514 Rev 1 10/08 2 I C Gamma and V Buffer with EEPROM COM General Description Features The DS3514 is a programmable gamma and V volt- COM 10-Bit Gamma Buffers, 14 Channels age generator that supports both real-time updating as 8-Bit V Buffer, 1 Channel COM well as multibyte storage of gamma/V data in on- COM chip EEPROM memory. An independent 10-bit DAC, two Four 10-Bit EEPROM Words per Channel 10-bit data registers, and four words of EEPROM memo- Low-Power 400A/ch Gamma Buffers ry are provided for each individually addressable gamma or V channel. High-performance buffer 2 COM I C-Compatible Serial Interface amplifiers are integrated on-chip, providing rail-to-rail, 2 Flexible Control from I C or Pins low-power (400A/gamma channel) operation. The V channel features a high current drive (> 250mA COM 9.0V to 15.0V Analog Supply peak) and a fast-settling buffer amplifier optimized to 2.7V to 5.5V Digital Supply drive the V node of a wide range of TFT-LCD panels. COM 2 Programming occurs through an I C-compatible serial 48-Pin TQFN Package (7mm x 7mm) interface. Interface performance and flexibility are enhanced by a pair of independently loaded data latch- 2 es per channel, as well as support for I C speeds up to Ordering Information 400kHz. The multitable EEPROM memory enables a rich variety of display system enhancements, including PART TEMP RANGE PIN-PACKAGE support for temperature or light-level dependent DS3514T+ -45C to +95C 48 TQFN-EP* gamma tables, enabling of factory or field automated DS3514T+T&R -45C to +95C 48 TQFN-EP* display adjustment, and support for backlight dimming algorithms to reduce system power. Upon power-up +Denotes a lead-free/RoHS-compliant package. and depending on mode, DAC data is selected from T&R = Tape and reel. EEPROM by the S0/S1 pins or from a fixed memory *EP = Exposed pad. address. Applications TFT-LCD Gamma and V Buffer COM Pin Configuration and Typical Operating Circuit appear at Adaptive Gamma and V Adjustment (Real COM end of data sheet. 2 2 Time by I C, Select EEPROM Through I C or S0/S1 Pins) Industrial Process Control Gamma or V Channel Functional Diagram COM SDA, SCL 2 I C LATCH A 8-/ INTERFACE A0 MUX LATCH B 10-BIT* DAC V OUT IN OUT EEPROM S1/ S0 LOGIC ADDRESS LD * 10 BITS FOR GAMMA CHANNELS, 8 BITS FOR THE V CHANNEL. COM Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.2 I C Gamma and V Buffer with EEPROM COM ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to GND ................-0.5V to +16V Junction Temperature......................................................+125C DD Voltage Range on VRL, VRH, GHH, GHM, GLM, GLL Operating Temperature Range ...........................-45C to +95C Relative to GND.........-0.5V to (V + 0.5V), not to exceed 16V Programming Temperature Range .........................0C to +85C DD Voltage Range on V Relative to GND ..................-0.5V to +6V Storage Temperature Range .............................-55C to +125C CC Voltage Range on SDA, SCL, A0, LD, S0, Soldering Temperature...........................Refer to the IPC/JEDEC S1 Relative to GND .....-0.5V to (V + 0.5V), not to exceed 6V CC J-STD-020 Specification. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS (T = -45C to +95C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Digital Supply Voltage V (Notes 1, 2) 2.7 5.5 V CC Analog Supply Voltage V (Note 1) 9.0 15.0 V DD VRH, VRL Voltage V Applies to V output 2.0 V - 2.0 V VCOM COM DD GND + GHH, GHM, GLM, GLL Voltage V Applies to GM1GM14 V - 0.2 V GM114 DD 0.2 Input Logic 1 0.7 x V CC V V IH (SCL, SDA, A0, S0, S1, LD) V + 0.3 CC Input Logic 0 V -0.3 0.3 x V V IL CC (SCL, SDA, A0, S0, S1, LD) V Load Capacitor C 1 F COM D VCAP Compensation Capacitor C 0.1 F COMP INPUT ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, T = -45C to +95C, unless otherwise noted.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Leakage (SDA, SCL, A0, I -1 +1 A L S0, S1, LD) V Supply Current I (Note 3) 5 10 mA DD DD V Supply Current, Nonvolatile CC I (Note 4) 0.25 0.6 mA CC Read or Write V Standby Supply Current I (Note 5) 10 30 A CC CCQ V Standby Supply Current I (Note 6) 450 850 A DD DDQ I/O Capacitance (SDA, SCL, LD, C Guaranteed by design 5 10 pF I/O S0, S1, A0) End-to-End Resistance R 16 k TOTAL (VRH to VRL) R Tolerance T = +25C -20 +20 % TOTAL A 2 DS3514