ISL24003 ® Data Sheet December 7, 2005 FN6118.0 Multi-Channel Buffers Plus VCOM Driver Features The ISL24003 integrates eighteen gamma buffers and a single VCOM buffer for use in large panel LCD displays of 10” and greater. Half of the gamma channels in each device are designed to swing to the upper supply rail, with the other half designed to swing to the lower rail. The output capability of each channel is 10mA continuous, with 120mA peak. The gamma buffers feature a 10MHz 3dB bandwidth specification and a 9V/µs slew rate. • 18-channel gamma buffers - 9 channels swing to the upper supply - 9 channels swing to the lower supply - 10mA continous output current The VCOM amplifier is designed to swing from rail to rail. The output current capability of the VCOM in the ISL24003 is 60mA continuous, 150mA peak, and a slew rate of 50V/µs. Ordering Information • Low supply current • Pb-free plus anneal available (RoHS compliant) Applications ISL24003 (44 LD 7X7MM QFN) TOP VIEW 34 IN4 NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pinout 35 IN3 MDP0046 44 Ld 7x7mm QFN (Pb-free) 36 IN2 7” • Industrial flat panel displays 37 IN1 ISL24003IRZ • LCD televisions 38 ISL24003IRZ-T7 (Note) PACKAGE 39 VS+ MDP0046 44 Ld 7x7mm QFN (Pb-free) 40 OUT1 - 41 OUT2 ISL24003IRZ • TFT-LCD monitors 42 OUT3 ISL24003IRZ (Note) PKG DWG. # 43 OUT4 TAPE & REEL 44 OUT5 PART MARKING OUT6 1 33 IN5 OUT7 2 32 IN6 OUT8 3 31 IN7 OUT9 4 30 IN8 VS- 5 29 IN9 THERMAL PAD VS+ 6 IN16 22 IN17 21 23 IN15 IN18 20 24 IN14 OUT14 11 INPCOM 19 OUT13 10 VS- 18 25 IN13 OUTCOM 17 OUT12 9 INNCOM 16 26 IN12 OUT18 15 OUT11 8 OUT17 14 27 IN11 OUT15 12 1 28 IN10 OUT10 7 OUT16 13 PART NUMBER • Single VCOM amplifier - 180mA short circuit output current - 35MHz -3dB Bandwidth - 70V/µs slew rate CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL24003 Absolute Maximum Ratings (TA = 25°C) Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . .+18V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V, VS+ +0.5V Maximum Continuous Output Current (VOUT1-18) . . . . . . . . . 10mA Maximum Continuous Output Current (VOUTA). . . . . . . . . . . . 60mA Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: All parameters having Min/Max specifications are guaranteed. Typ 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 Specifications PARAMETER VS+ = +15V, VS- = 0, RL = 10kΩ, CL = 10pF to 0V, TA = 25°C unless otherwise specified DESCRIPTION CONDITIONS MIN TYP MAX UNIT 20 mV INPUT CHARACTERISTICS (REFERENCE BUFFERS) VOS Input Offset Voltage VCM = 0V 2 TCVOS Average Offset Voltage Drift (Note 1) 5 IB Input Bias Current VCM = 0V 2 RIN Input Impedance 10 MΩ CIN Input Capacitance 1.35 pF AV Voltage Gain 1V ≤ VOUT ≤ 14V CMIR Input Voltage Range IN1 to IN9 IN10 to IN18 µV/°C 50 nA 0.992 1.008 V/V 1.5 VS+ V 0 VS+ -1.5 V 15 mV INPUT CHARACTERISTICS (VCOM BUFFER) VOS Input Offset Voltage VCM = 7.5V 1 TCVOS Average Offset Voltage Drift (Note 1) 3 IB Input Bias Current VCM = 7.5V 2 RIN Input Impedance 10 MΩ CIN Input Capacitance 1.35 pF VREG Load Regulation CMIRCOM Input Voltage Range VCOM AVOL Open Loop Gain CMRR Common Mode Rejection Ratio µV/°C 50 +20 nA VCOM = 7.5V, -60mA < IL < 60mA -25 RL = 1kΩ 55 70 dB 50 65 dB 14.85 14.9 V 14.8 14.85 V 13.45 13.5 0 VS+ mV V OUTPUT CHARACTERISTICS (REFERENCE BUFFERS) VOH High Output Voltage - (Output 1-2) VIN = 15V, IO = 5mA High Output Voltage - (Output 3-9) VOL High Output Voltage - (Output 10-18) VIN = 13.5V, IO = 5mA Low Output Voltage - (Output 1-9) VIN = 1.5V, IO = 5mA Low Output Voltage - (Output 10-16) VIN = 0V, IO = 5mA 1.5 Low Output Voltage - (Output 17-18) ISC Short Circuit Current 1.55 V 150 200 mV 100 150 mV 100 130 mA 14.85 14.9 V OUTPUT CHARACTERISTICS (VCOM BUFFER) VOH High Level Saturated Output Voltage VS+ = 15V, IO = -5mA, VI = 15V VOL Low Level Saturated Output Voltage VS+ = 15V, IO = -5mA, VI = 0V ISC Short Circuit Current 2 0.1 150 180 0.15 V mA FN6118.0 December 7, 2005 ISL24003 Electrical Specifications PARAMETER VS+ = +15V, VS- = 0, RL = 10kΩ, CL = 10pF to 0V, TA = 25°C unless otherwise specified (Continued) DESCRIPTION CONDITIONS MIN TYP MAX UNIT Reference buffer VS from 5V to 15V 50 80 dB VCOM buffer, VS from 5V to 15V 55 80 dB 8.0 11.5 4.5 9 V/µs POWER SUPPLY PERFORMANCE PSRR IS Power Supply Rejection Ratio Total Supply Current 15.5 mA DYNAMIC PERFORMANCE (BUFFER AMPLIFIERS) SR Slew Rate (Note 2) tS Settling to +0.1% (AV = +1) (AV = +1), VO = 2V step 500 ns BW -3dB Bandwidth RL = 10kΩ, CL = 10pF 10 MHz CS Channel Separation 70 dB 70 V/µs ISL24003 DYNAMIC PERFORMANCE (VCOM AMPLIFIERS) SR Slew Rate (Note 2) -4V ≤ VOUT ≤ 4V, 20% to 80% tS Settling to +0.1% (AV = +1) (AV = +1), VO = 2V step 350 ns BW -3dB Bandwidth RL = 10kΩ, CL = 10pF 35 MHz CS Channel Separation 70 dB 50 NOTES: 1. Measured over operating temperature range. 2. Slew rate is measured on rising and falling edges. 3 FN6118.0 December 7, 2005 ISL24003 Pin Descriptions PIN NAME ISL24003 6, 39 VS+ PIN FUNCTION Positive supply voltage 40-44, 1-4 OUT1-9 7-15 OUT10-18 16 INNCOM Negative Input VCOM Output, VCOM 17 OUTCOM 5,18 VS- Output gamma channel 1-9 Output gamma channel 10-18 Negative supply voltage 19 INPCOM Positive Input VCOM 20-28 IN10-18 Input gamma channel 10-18 29-37 IN1-9 38 NC Input gamma channel 1-9 No connect Block Diagram VS+ ISL24003 1 COLUMN DRIVER 18 + - VCOM NOTE: ISL24003 integrates 18 gamma buffers. 4 FN6118.0 December 7, 2005 ISL24003 Typical Performance Curves VS=±7.5V CL=10pF VS=±7.5V RL=10kΩ RL=1kΩ CL=100pF RL=10kΩ CL=47pF CL=12pF RL=562Ω RL=150Ω FIGURE 1. FREQUENCY RESPONSE FOR VARIOUS RLOAD (BUFFER) VS=±7.5V RL=10kΩ CL=8pF FIGURE 2. FREQUENCY RESPONSE FOR VARIOUS CLOAD (BUFFER) VS=±7.5V RL=10kΩ CL=8pF VOUT 2V/DIV 50mV/DIV VOUT VIN 1µs/DIV 100ns/DIV FIGURE 3. LARGE SIGNAL TRANSIENT RESPONSE (BUFFER) FIGURE 4. SMALL SIGNAL TRANSIENT RESPONSE (BUFFER) 20 VS=±7.5V VS=±7.5V RL=1kΩ 0 CL=1.5pF 100 PSRR (dB) VOLTAGE NOISE (nV/√Hz) VIN -20 PSRR+ -40 PSRR-60 10 10K 100K 1M 10M 100M FREQUENCY (Hz) FIGURE 5. INPUT NOISE SPECIAL DENSITY vs FREQUENCY (BUFFER) 5 -80 1K 10K 100K 1M 10M FREQUENCY (Hz) FIGURE 6. PSRR vs FREQUENCY (BUFFER) FN6118.0 December 7, 2005 ISL24003 Typical Performance Curves (Continued) -20 VS=±7.5V RL=1kΩ 0 CL=1.5pF Channel 1-9 PSRR (dB) VS=±7.5V RL=10kΩ VOPP=1V Channel 10-18 -20 PSRR+ -40 PSRR-60 -80 1K 10K 100K 1M 10M FREQUENCY (Hz) FIGURE 7. OVERSHOOT vs CAPACITANCE LOAD (BUFFER) VS=±7.5V RL=10kΩ FIGURE 8. PSRR vs FREQUENCY (VCOM) VS=±7.5V CL=10pF CL=100pF CL=47pF RL=10kΩ RL=1kΩ CL=12pF RL=562Ω RL=150Ω FIGURE 9. FREQUENCY RESPONSE FOR VARIOUS CLOAD (VCOM) VS=±7.5V RL=10kΩ CL=8pF FIGURE 10. FREQUENCY RESPONSE FOR VARIOUS RLOAD (VCOM) VS=±7.5V RL=10kΩ CL=8pF VOUT 2V/DIV VIN 50mV/DIV VOUT VIN 1µs/DIV FIGURE 11. LARGE SIGNAL TRANSIENT RESPONSE (VCOM) 6 100ns/DIV FIGURE 12. SMALL SIGNAL TRANSIENT RESPONSE (VCOM) FN6118.0 December 7, 2005 ISL24003 Typical Performance Curves (Continued) VS=±7.5V VOLTAGE NOISE (nV/√Hz) VS=±7.5V RL=10kΩ VOPP=1V 100 10 10k 100k 1M 10M 100M FREQUENCY (Hz) FIGURE 13. OVERSHOOT vs CAPACITANCE LOAD (VCOM) FIGURE 14. INPUT NOISE SPECIAL DENSITY vs FREQUENCY (VCOM) BUFFER <==> VCOM BUFFER <==> BUFFER OUTPUT IMPEDANCE (Ω) 1k VS=±7.5V RL=1kΩ 100 VS=±5V 10 BUFFER VCOM 1 0 1k 10k 100k 1M 10M FREQUENCY (Hz) FIGURE 15. CHANNEL SEPARATION 7 FIGURE 16. OUTPUT IMPEDANCE vs FREQUENCY FN6118.0 December 7, 2005 ISL24003 Description of Operation and Application Information conditions need to be modified for the buffer to remain in the safe operating area. Product Description The maximum power dissipation allowed in a package is determined according to: The ISL24003 are fabricated using a high voltage CMOS process. They exhibit rail to rail input and output capability and have very low power consumption. When driving a load of 10K and 12pF, the buffers have a -3dB bandwidth of 10MHz and exhibit 9V/µs slew rate. The VCOM amplifier has a -3dB bandwidth of 12MHz and exhibit 10V/µs slew rate. Input, Output, and Supply Voltage Range The ISL24003 are specified with a single nominal supply voltage from 5V to 15V or a split supply with its total range from 5V to 15V. Correct operation is guaranteed for a supply range from 4.5V to 16.5V. The input common-mode voltage range of the ISL24003 within 500mV beyond the supply rails. The output swings of the buffers and VCOM amplifier typically extend to within 100mV of the positive and negative supply rails with load currents of 5mA. Decreasing load currents will extend the output voltage even closer to each supply rails. T JMAX - T AMAX P DMAX = -------------------------------------------Θ JA where: • TJMAX = Maximum junction temperature • TAMAX = Maximum ambient temperature • θJA = Thermal resistance of the package • 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: P DMAX = V S × I S + Σi × [ ( V S + – V OUT i ) × I LOAD i ] + ( V S + – V OUT ) × I LA when sourcing, and: Output Phase Reversal The ISL24003 are immune to phase reversal as long as the input voltage is limited from VS- -0.5V to VS+ +0.5V. Although the device's output will not change phase, the input's over-voltage should be avoided. If an input voltage exceeds supply voltage by more than 0.6V, electrostatic protection diode placed in the input stage of the device begin to conduct and over-voltage damage could occur. P DMAX = V S × I S + Σi × [ ( V OUT i – V S - ) × I LOAD i ] + ( V OUT – V S - ) × I LA Output Drive Capability • VS = Total supply voltage of buffer and VCOM The ISL24003 do not have internal short-circuit protection circuitry. The buffers will limit the short circuit current to 120mA and the VCOM amplifier will limit the short circuit current to 150mA if the outputs are directly shorted to the positive or the negative supply. If the output is shorted indefinitely, the power dissipation could easily increase such that the part will be destroyed. Maximum reliability is maintained if the output continuous current never exceeds 10mA for the buffers and 60mA for the VCOM amplifier. These limits are set by the design of the internal metal interconnections. • ISMAX = Total quiescent current The Unused Buffers It is recommended that any unused buffers should have their inputs tied to ground plane. Power Dissipation when sinking. where: • i = 1 to total number of buffers • VOUTi = Maximum output voltage of the application • VOUT = Maximum output voltage of VCOM • ILOADi = Load current of buffer • ILA = Load current of VCOM If we set the two PDMAX equations equal to each other, we can solve for the RLOAD's to avoid device overheat. The package power dissipation curves provide a convenient way to see if the device will overheat. The maximum safe power dissipation can be found graphically, based on the package type and the ambient temperature. By using the previous equation, it is a simple matter to see if PDMAX exceeds the device's power derating curves. With the high-output drive capability of the ISL24003, it is possible to exceed the 125°C “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 8 FN6118.0 December 7, 2005 ISL24003 Power Supply Bypassing and Printed Circuit Board Layout As with any high frequency device, good printed circuit board layout is necessary for 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, one 0.1µF ceramic capacitor should be placed from the VS+ pin to ground. A 4.7µF tantalum capacitor should then be connected from the VS+ pin to ground. 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. Important Note: The metal plane used for heat sinking of the device is electrically connected to the negative supply potential (VS-). If VS- is tied to ground, the thermal pad can be connected to ground. Otherwise, the thermal pad must be isolated from any other power planes. 9 FN6118.0 December 7, 2005 ISL24003 QFN Package Outline Drawing NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at <http://www.intersil.com/design/packages/index.asp> All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 10 FN6118.0 December 7, 2005