EC5575 14+1 Channel Voltage Buffers for TFT LCD GENERAL DESCRIPTION FEATURES • Wide supply voltage range 6.5V ~ 18V • Rail-to-rail output swing (The highest two The EC5575 is a 14+1 channel voltage buffers that buffers reference voltage for gamma correction in a thin film transistor liquid crystal display (TFT LCD). This device incorporating a Vcom amplifier circuits, four rail to rail buffer amplifier circuits (the highest two stage and lowest two stage) and 10 buffer amplifiers circuits. The EC5575 is available in a space saving 48-pin TQFP package, and the operating temperature is from –20°C to +85°C. stage & lowest two stage) • High slew rate 1V/µs • GBWP 1 MHz • 2 MHz -3dB Bandwidth • Large Vcom Drive Current: ±100mA(Max) • Ultra-small Package TQFP-48 APPLICATIONS • TFT-LCD Reference Driver PIN ASSIGNMENT ( E Type ) Mi 37 Ni 38 Li Ki Ji Ii Hi Vss VDD Gi Fi Ei Di Ci 36 35 34 33 32 31 30 29 28 27 26 25 24 Bi 23 Ai Li Fi Mi http://www.DataSheet4U.net/ www.DataSheet.net/ Gi Vcomi 39 22 VDD Ni Hi N.C 41 Comi N.C 40 Ai 21 Vss Ii Lo Bi 20 Ao Fo N.C 42 Ci Ji Mo 19 Vss Go VDD 43 Ki No Di 18 Vss 44 Como Ho Bo Ao Ei 17 N.C Io Bo VDD 45 16 N.C Jo Co 15 VDD Vss 46 Ko Do Vcomo 47 14 N.C Eo No 48 13 1 2 3 4 5 6 7 8 9 10 11 12 Mo Lo Ko Jo Io Ho Vss VDD Go Fo Eo Do Co A, B, M, N: Rail to Rail OPAMPs E-CMOS Corp. (www.ecmos.com.tw) Page 1 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD PIN ASSIGNMENT ( E2 Type ) http://www.DataSheet4U.net/ www.DataSheet.net/ Ordering Information Part No. Top Mark Package Description EC5575-F AS15-F TQFP48 14+1 lead-free EC5575-G AS15-G TQFP48 14+1 Green Package EC5575-FR AS15-F TQFP48 14+1 lead-free; (R) : Tape & reel EC5575-GR AS15-G TQFP48 14+1 Green Package; (R) : Tape & reel EC5575-HF AS15-HF TQFP48 14+1 lead-free ( H ) EC5575-HG AS15-HG TQFP48 14+1 Green Package ( H ) EC5575E2-F AS15E2-F TQFP48 14+1 (pin40 is Vcom-) lead-free EC5575E2-G AS15E2-G TQFP48 14 channel (pin40 is Vcom-)Green Package EC5575E2-HF AS15E2-HF TQFP48 14+1 (pin40 is Vcom-) lead-free ( H ) EC5575E2-HG AS15E2-HG TQFP48 14 channel (pin40 is Vcom-)Green Package (H) Note: (H): Exposed pad (3.05x3.05 mm) ; (R) : Tape & reel E-CMOS Corp. (www.ecmos.com.tw) Page 2 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD ABSOLUTE MAXIMUM RATINGS (TA = 25 °C) Values beyond absolute maximum ratings may cause permanent damage to the device. These are stress ratings only; functional device operation is not implied. Exposure to AMR conditions for extended periods may affect device reliability. Supply Voltage between VS+ and VS+18V Input Voltage (For rail-to-rail ) VS-－0.5V, VS +＋0.5V Maximum Continuous Output Current (A ~ N uffers) 30mA Maximum Continuous Output Current(Com Buffer) 100mA Maximum Die Temperature +150°C Storage Temperature Operating Temperature Lead Temperature ESD Voltage -65°C to +150°C -20°C to +85°C 260°C 2kV Important Note: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA ELECTRICAL CHARACTERISTICS VS+= +5V, VS - = -5V, RL = 10kΩ and CL = 10pF to 0V, TA = 25°C unless otherwise specified. Parameter Description Input Characteristics VOS Input Offset Voltage TCVOS IB Typ Max Units VCM= 0V 2 12 mV Average Offset Voltage Drift [1] 5 Input Bias Current VCM= 0V 2 RIN Input Impedance CIN Input Capacitance Condition Min µV/°C 50 1 nA G 1.35 pF Output Characteristics VOL VOH VOL VOH ISC IOUT Output Swing Low Output Swing High Output Swing Low Output Swing High Short Circuit Current Output Current ISC(Com) Short Circuit Current IOUT(Com) Output Current Power Supply Performance PSRR IS IS(Com) Power Supply Rejection Ratio IL= -5mA (A, B, M, N rail-to-rail Buffers) IL= 5mA (A, B, M, N rail-to-rail Buffers) 4.85 IL= -5mA (C ~ L Buffers) -3.5 IL= 5mA (C ~ L Buffers) 3.5 -4.92 4.92 (A ~ N Buffers) ±120 ±30 ±300 ±100 V V V V mA mA mA mA 80 dB http://www.DataSheet4U.net/ www.DataSheet.net/ (A ~ N Buffers) (Com Buffer) (Com Buffer) VS is moved from ±3.25V to ±7.75V Supply Current (Per Amplifier) No Load (A ~ N Buffers) Supply Current (Com Buffer) Dynamic Performance -4.0V≦VOUT≦4.0V, 20% to 80% SR Slew Rate [2] tS Settling to +0.1% (AV = +1) (AV = +1), VO=2V Step RL = 10KΩ, CL = 10PF BW -3dB Bandwidth RL = 10KΩ, CL = 10PF PM Phase Margin CS Channel Separation f = 1 MHz 1. Measured over operating temperature range 2. Slew rate is measured on rising and falling edges E-CMOS Corp. (www.ecmos.com.tw) Page 3 of 12 60 500 -4.85 750 µA 5 mA 1 5 2 60 75 V/µs µs MHz Degrees dB 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD TYPICAL PERFORMANCE CURVES VCC = 10V , F :10K 1500 1250 1000 750 500 250 0 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 Quantity(Amplifiers) 1750 Input Offset(mV) Figure (a) Input Offset Voltage Distribution Figure (b) Input beyond the rails VCC = 10V , F :10K VCC = 10V , F :1K http://www.DataSheet4U.net/ www.DataSheet.net/ Figure (c) Rail to Rail Capability igure (d) Large Signal Transient Response VCC = 10V , F :1K VCC = 10V , F :1K Figure (e) Large Signal Transient Response E-CMOS Corp. (www.ecmos.com.tw) Figure (f) Small Signal Transient Response Page 4 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD TYPICAL PERFORMANCE CURVES Figure (g) Open Loop Gain & Phase vs. Frequency Figure (h) Frequency Response for Various CL http://www.DataSheet4U.net/ www.DataSheet.net/ Figure (h) Frequency Response for Various RL E-CMOS Corp. (www.ecmos.com.tw) Page 5 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD APPLICATIONS INFORMATION Product Description The EC5575 rail-to-rail quad channels amplifier is built on an advanced high voltage CMOS process. It’s beyond rails input capability and full swing of output range made itself an ideal amplifier for use in a wide range of general-purpose applications. The features of 1µS high slew rate, fast settling time, 2MHz of GBWP as well as high output driving capability have proven the EC5575 a good voltage reference buffer in TFT-LCD for grayscale reference applications. High phase margin and extremely low power consumption (500µA per amplifier) make the EC5575 ideal for Connected in voltage follower mode for low power high drive applications Supply Voltage, Input Range and Output Swing The EC5575 can be operated with a single nominal wide supply voltage ranging from 6.5V to 18V with stable performance over operating temperatures of -20 °C to +85 °C. With 500mV greater than rail-to-rail input common mode voltage range and 75dB of Common Mode Rejection Ratio, the EC5575 allows a wide range sensing among many applications without having any concerns over exceeding the range and no compromise in accuracy. The output swings of the EC5575 typically extend to within 80mV of positive and negative supply rails with load currents of 5mA. The output voltage swing can be even closer to the supply rails by merely decreasing the load current. Figure 1 shows the input and output waveforms for the device in the unity-gain configuration. The amplifier is operated under ±5V supply with a 10k. load connected to GND. The input is a 10Vp-p sinusoid. An approximately 9.985 Vp-p of output voltage swing can be easily achieved. metal interconnections are well designed to prevent the output continuous current from exceeding +/-30 mA such that the maximum reliability can be well maintained. Output Phase Reversal The EC5575 is designed to prevent its output from being phase reversal as long as the input voltage is limited from VS-－0.5V to VS+ ＋0.5V. Figure 2 shows a photo of the device output with its input voltage driven beyond the supply rails. Although the phase of the device's output will not be reversed, the input's over-voltage should be avoided. An improper input voltage exceeds supply range by more than 0.6V may result in an over stress damage. Figure 2. Operation with Beyond-the Rails Input http://www.DataSheet4U.net/ www.DataSheet.net/ Power Dissipation The EC5575 is designed for maximum output current capability. Even though momentary output shorted to ground causes little damage to the device. For the high drive amplifier EC5575, it is possible to exceed the 'absolute-maximum junction temperature' under certain load current conditions. Therefore, it is important to calculate the maximum junction temperature for the application to determine if load conditions need to be modified for the amplifier to remain in the safe operating area. The maximum power dissipation allowed in a package is determined according to: PDmax = TJmax - TAmax ΘJA Figure 1. Operation with Rail-to-Rail Input and Output Output Short Circuit Current Limit A +/-120mA short circuit current will be limited by the EC5575 if the output is directly shorted to the positive or the negative supply. For an indefinitely output short circuit, the power dissipation could easily increase such that the device may be damaged. The internal E-CMOS Corp. (www.ecmos.com.tw) Where: TJmax = Maximum Junction Temperature TAmax= Maximum Ambient Temperature ΘJA = Thermal Resistance of the Package Page 6 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD PDmax = Maximum Power Dissipation in the Package. The maximum power dissipation actually produced by an IC is the total quiescent supply current times the total power supply voltage, plus the power in the IC due to the loads, or: PDmax =∑i[VS * ISmax + (VS+ – VO) * IL] When sourcing, and PDmax = ∑i[VS * ISmax + (VO – VS-) * IL] When sinking. Where: i = 1 to 4 VS = Total Supply Voltage ISmax = Maximum Supply Current Per Amplifier VO = Maximum Output Voltage of the Application while does not draw any DC load current or reduce the gain. Power Supply Bypassing and Printed Circuit Board Layout With high phase margin, the EC5575 performs stable gain at high frequency. Like any high-frequency device, good layout of the printed circuit board usually comes with optimum performance. Ground plane construction is highly recommended, lead lengths should be as short as possible and the power supply pins must be well bypassed to reduce the risk of oscillation. For normal single supply operation, where the VS- pin is connected to ground, a 0.1 µF ceramic capacitor should be placed from VS+ pin to VS- pin as a bypassing capacitor. A 4.7µF tantalum capacitor should then be connected in parallel, placed in the region of the amplifier. One 4.7µF capacitor may be used for multiple devices. This same capacitor combination should be placed at each supply pin to ground if split supplies are to be used. IL= Load current RL= Load Resistance = (VS+ – VO)/IL = (VO – VS-)/ IL A calculation for RL to prevent device from overheat can be easily solved by setting the two PDmax equations equal to each other. Pin Count Θja (oC/W) Θjc (C/W) TQFP-48 67 31 Normal TQFP-48 31 15 EXPOSED PAD http://www.DataSheet4U.net/ www.DataSheet.net/ 1V Driving Capacitive Loads The EC5575 is designed to drive a wide range of capacitive loads. In addition, the output current handling capability of the device allows for good slewing characteristics even with large capacitive loads. The combination of these features make the EC5575 ideally for applications such as TFT LCD panel grayscale reference voltage buffers, ADC input amplifiers, etc. As load capacitance increases, however, the -3dB bandwidth of the device will decrease and the peaking increase. The amplifiers drive 10pF loads in parallel with10KΩ. with just 1.5dB of peaking, and 100pF with 6.4dB of peaking. If less peaking is desired in these applications, a small series resistor (usually between 5Ωand 50Ω) can be placed in series with the output. However, this will obviously reduce the gain slightly. Another method of reducing peaking is to add a "snubber" circuit at the output. A snubber is a shunt load consisting of a resistor in series with a capacitor. Values of 150Ω and 10nF are typical. The advantage of a snubber is that it improves the settling and overshooting performance E-CMOS Corp. (www.ecmos.com.tw) Page 7 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD Application Circuits http://www.DataSheet4U.net/ www.DataSheet.net/ E-CMOS Corp. (www.ecmos.com.tw) Page 8 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD PACKAGE MARKING INDICATION (PACKAGE TYPE TQFP 48) 25 37 AS15 DATE CODE Lot. Number 13 1 http://www.DataSheet4U.net/ www.DataSheet.net/ 25 37 AS15-F DATE CODE Lot. Number 13 1 LEAD FREE TQFP48 ( MAKING ) E-CMOS Corp. (www.ecmos.com.tw) Page 9 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD OUTLINE DIMENSIONS (Dimensions shown in millimeters) 9.0 ± 0.20 7.0 ± 0.10 36 25 37 24 7.0 ± 0.10 9.0 ± 0.20 1.0 ± 0.06 1.2 max. 48 13 http://www.DataSheet4U.net/ www.DataSheet.net/ 0.21 ± 0.04 1 12 0.50 0.15 ± 0.05 0.6 ± 0.15 3.5 o ± 3 o 1.00 BSC. E-CMOS Corp. (www.ecmos.com.tw) Page 10 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD OUTLINE DIMENSIONS H: Exposed pad (3.05x3.05 mm) http://www.DataSheet4U.net/ www.DataSheet.net/ E-CMOS Corp. (www.ecmos.com.tw) Page 11 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/ EC5575 14+1 Channel Voltage Buffers for TFT LCD General Disclaimer: 1. Product information and specifications furnished by E-CMOS in this data sheets are in effect as of the publication date shown and are believed to be accurate and reliable. However, no responsibility is assumed by E-CMOS for the use of any information shown herein, nor for any patent or other rights infringement. 2. No license is granted by implication or otherwise under any patent or industrial properties owned by E-CMOS or any third party through this document. 3. The information herein is subject to change at any time without notice. 4. Neither reproduction nor duplication of this document, in any form, the whole or part is allowed without the prior written approval from E-CMOS. 5. Products of E-CMOS Corp., unless otherwise specified, are not authorized for use as critical components of any device or equipment in applications that demand extremely high reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aircraft, vehicles, nuclear power, radiation resistant system, transportation, disaster prevention equipment, gas related equipment, physical exercise equipment, safety equipment and medical equipment for life support, etc. 6. Although E-CMOS makes every attempt to ensure that its products are of high quality and reliability, thorough consideration of safety design and operating within the ranges guaranteed are strongly recommended to prevent any accident and damage that may ensue. E-CMOS bares no responsibility for failure or damage when abused or used beyond the http://www.DataSheet4U.net/ www.DataSheet.net/ guaranteed ranges. 7. Products applied to life support devices and systems are strongly requested to contact E-CMOS Corporation headquarter for the written approval to establish suitable terms & conditions. E-CMOS’ warranty is limited to replacement of defective components. Any personal injury or death or any other consequential damages of property are not covered. Copyright © 2002 by E-CMOS Corporation. E-CMOS CORPORATION IC DATASHEET ADDRESS: NO.1, CREATION RD. 2ND, SCIENCE-BASED INDUSTRIAL PARK, HSIN-CHU 300, TAIWAN, R.O.C. WEBSITE: http://www.ecmos.com.tw E-MAIL: mailto:sales@ecmos.com.tw TEL: 886-3-5785888 FAX: 886-3-5783630 E-CMOS Corp. (www.ecmos.com.tw) Page 12 of 12 2007/09/12 Datasheet datasheet pdf pdf - http://www.DataSheet4U.co.kr/ - http://www.DataSheet4U.net/