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| TSL1020 20 + 1 channel buffer for TFT-LCD panels Features Wide supply voltage: 5.5V to 16.8V Low operating current: 8.5mA typ. at 25C Bandwidth at -3dB: 5MHz High output current COM amplifier: 150mA Industrial temperature range: -40C to +95C Small package: TQFP48 ePad Pin connections (top view) COMo COMo COMi VSS VDD 7 x 7mm TQFP48 ePad Application TFT liquid crystal display (LCD) 48 47 46 45 44 43 42 41 40 39 38 37 Description The TSL1020 is composed of 20 + 1 channel buffers which are used to buffer the reference voltage for gamma correction in thin film transistor (TFT) liquid crystal displays (LCD). One COM amplifier is able to deliver high output current, up to 150mA. Amplifiers A and B feature positive single supply inputs for common mode voltage, thus can be used for the highest gamma voltages. The amplifiers C to T inclusive, and the COM amplifier, feature negative single supply inputs and are dedicated to the lowest gamma voltages. The TSL1020 is fully characterized and guaranteed over a wide industrial temperature range (-40 to +95C). VSS 1 2 3 4 5 6 J Q P O N T S R 36 35 34 33 M L K I H G F E D C B A 32 31 30 VDD 29 28 27 26 25 21 22 23 24 7 8 9 10 11 12 13 14 15 16 17 18 19 20 VDD VSS January 2008 Rev 1 1/16 www.st.com 16 Absolute maximum ratings and operating conditions TSL1020 1 Absolute maximum ratings and operating conditions Table 1. Symbol VCC Vin Rthja Tlead Tstg Tj ESD Machine model Absolute maximum ratings Parameter Supply voltage (VDD - VSS) Input voltage Thermal resistance junction to ambient for TQFP48 ePad not thermally connected to PCB ePad thermally connected to PCB Lead temperature (soldering 10 seconds) Storage temperature Junction temperature Human body model (HBM)(1) (MM)(2) Value 18 VSS -0.5 to VDD +0.5 85 36 260 -65 to +150 150 2000 200 Unit V V C/W C C C V V 1. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 2. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5). This is done for all couples of connected pin combinations while the other pins are floating. Table 2. Symbol VCC Tamb Vin Operating conditions Parameter Supply voltage (VDD - VSS) Ambient temperature Input voltages for buffers A & B Input voltages for buffers C to T & COM Value 5.5 to 16.8 -40 to +95 VSS + 1.5V to VDD VSS to VDD - 1.5V Unit V C V 2/16 TSL1020 Typical application schematics 2 Typical application schematics Figure 1. A typical application schematic for the TSL1020 Vcc 16 30 VDD 42 + Cs R1 10uF R2 Gnd R3 22 21 20 A B C D E F G H I J K L M N O P Q R S T 19 17 15 14 13 12 11 10 9 8 6 5 4 3 2 1 48 47 46 45 Gamma 19 Gamma 18 Gamma 17 Gamma 16 Gamma 15 Gamma 14 Gamma 13 To colunm driver Gamma 12 Gamma 11 Gamma 10 Gamma 9 Gamma 8 Gamma 7 Gamma 6 Gamma 5 Gamma 4 Gamma 3 Gamma 2 Gamma 1 Gamma 0 R4 23 R5 24 R6 25 R7 26 R8 27 R9 28 R10 29 R11 31 R12 32 R13 33 R14 34 R15 35 R16 36 R17 37 R18 38 R19 39 R20 40 R21 Gnd Com Ref. Voltage 41 COM 44 VCOM VSS 7 18 43 TSL1020 Gnd Note that: Amplifiers A & B have their input voltages in the range VSS+1.5V to VDD. This is why they must be used for high level gamma correction voltages. Amplifiers C to T have their input voltages in the range VSS to VDD-1.5V. This is why they must be used for medium-to-low level gamma correction voltages. Amplifier COM has its input voltage range from VSS to VDD-1.5V. 3/16 Electrical characteristics TSL1020 3 Table 3. Symbol Vio Vio Iib Rin Cin VOL VOH Iout PSRR ICC SR ts BW Gm Cs Electrical characteristics Electrical characteristics for Tamb = 25C , VDD = +5V, VSS = -5V, RL = 10k CL = 10pF , (unless otherwise specified) Parameter Input offset voltage Input offset voltage drift Input bias current Input impedance Input capacitance Output voltage low Output voltage high Short circuit output current COM buffer Power supply rejection ratio Supply current Slew rate (rising & falling edge) Settling time Bandwidth at -3dB Phase margin Channel separation VCC= 6.5 to 15.5V No load -3.5V < Vout < +3.5V 10% to 90% Settling to 0.1%, Vout= 2V step , RL=10k CL=10pF RL=10k CL=10pF , f=1MHz 80 150 100 8.5 1.1 5 5 70 75 12 dB mA V/s s MHz degrees dB Iout = -5mA Buffers C to R Buffers S, T & COM Iout = 5mA for buffers A & B (A to T buffers) 4.82 Test conditions Vicm = 0V -40C < Tamb < +95C Vicm = 0V, buffers A & B Vicm = 0V, buffers C to T & COM 1 1.35 -4.88 -4.92 4.87 40 mA -4.80 -4.85 5 140 70 Min. Typ. Max. 12 Unit mV V/C nA G pF V V Note: Limits are 100% production tested at 25C. Behavior at the temperature range limits is guaranteed through correlation and by design. 4/16 TSL1020 Electrical characteristics Figure 2. 12 11 10 9 8 7 6 4 Supply current vs. supply voltage for various temperatures Figure 3. 0.0 Output offset voltage (eq. Vio) vs. temperature TAMB=-40C TAMB=+25C Output offset voltage (eq. Vio) (mV) Current consumption (mA) -0.1 -0.2 -0.3 VCC = 5.5V, 10V, 16.8V -0.4 -40 -20 0 20 40 60 80 100 TAMB=+95C 6 8 10 12 14 16 18 Power supply voltage (V) Temperature (C) Figure 4. 60 Iib Input bias current (nA) Input current (Iib) vs. temperature Figure 5. 60 Iib Input bias current (nA) Input current (Iib) vs. temperature Amplifiers C to COM, PNP Inputs VCC = 5.5V, 10V, 16.8V 55 50 45 40 35 30 -40 55 50 45 40 35 30 -40 Amplifiers A & B, NPN Inputs VCC = 5.5V, 10V, 16.8V -20 0 20 40 60 80 100 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) Figure 6. 200 160 Output current (mA) Output current capability vs. temperature Figure 7. Output current capability vs. temperature 80 Output current (mA) 120 80 40 0 -40 -80 -120 -160 -200 -40 -20 0 20 40 60 80 100 VCC = 5.5V VCC = 10V VCC = 16.8V 40 0 VCC = 5.5V VCC = 10V, 16.8V -40 Amplifiers A & B -80 -40 Amplifiers C to T -20 0 20 40 60 80 100 Temperature (C) Temperature (C) 5/16 Electrical characteristics TSL1020 Figure 8. 250 200 Output current (mA) Output current capability vs. temperature Figure 9. 250 High level voltage drop (mV) High level voltage drop vs. temperature VCC = 5.5V 150 100 50 0 -50 -100 -150 -200 -250 -40 -20 0 20 40 60 80 100 VCC = 5.5V VCC = 10V VCC = 16.8V 200 VCC = 16.8V 150 100 VCC = 10V Amplifier COM 50 Amplifiers A & B Iout = 5mA 0 -40 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) Figure 10. Low level voltage drop vs. temperature 200 Low level voltage drop (mV) Figure 11. Low level voltage drop vs. temperature 120 Low level voltage drop (mV) VCC = 5.5V 100 80 60 40 20 0 -40 Amplifier COM Iout = 5mA 160 VCC = 5.5V 120 VCC = 10V, 16.8V 80 VCC = 10V, 16.8V Amplifiers S & T Iout = 5mA 40 0 -40 -20 0 20 40 60 80 100 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) Figure 12. Voltage output high (VOH) vs. output current - Amplifiers A & B 5.5 High level output voltage (V) Figure 13. Voltage output high (VOH) vs. output current - Amplifiers A & B 10.0 High level output voltage (V) 5.0 TAMB=-40C 9.8 TAMB=-40C TAMB=+25C 9.6 4.5 TAMB=+25C 9.4 TAMB=+95C 4.0 Amplifiers A & B VCC = 5.5V 3.5 0 5 10 15 20 25 30 Output current (mA) 9.2 TAMB=+95C 9.0 0 5 10 15 20 25 30 Output current (mA) Amplifiers A & B VCC = 10V 6/16 TSL1020 Electrical characteristics Figure 14. Voltage output high (VOH) vs. output current - Amplifiers A & B 16.8 High level output voltage (V) Figure 15. Voltage output low (VOL) vs. output current - Amplifiers C to R 1.2 Low level output voltage (V) 1.0 0.8 0.6 0.4 0.2 0.0 -30 TAMB=+95C Amplifiers C to R VCC = 5.5V 16.6 TAMB=-40C 16.4 TAMB=+95C 16.2 Amplifiers A & B VCC = 16.8V 16.0 0 5 10 15 20 TAMB=+25C TAMB=+25C TAMB=-40C 25 30 -25 -20 -15 -10 -5 0 Output current (mA) Output current (mA) Figure 16. Voltage output low (VOL) vs. output Figure 17. Voltage output low (VOL) vs. output current - Amplifiers C to R current - Amplifiers C to R 1.2 Low level output voltage (V) 1.2 TAMB=+95C Low level output voltage (V) 1.0 0.8 0.6 0.4 0.2 0.0 -30 Amplifiers C to R VCC = 10V 1.0 0.8 0.6 0.4 TAMB=-40C 0.2 0.0 -30 TAMB=+95C Amplifiers C to R VCC = 16.8V TAMB=+25C TAMB=+25C TAMB=-40C -25 -20 -15 -10 -5 0 -25 -20 -15 -10 -5 0 Output current (mA) Output current (mA) Figure 18. Voltage output low (VOL) vs. output Figure 19. Voltage output low (VOL) vs. output current - Amplifiers S & T current - Amplifiers S & T 1.2 Low level output voltage (V) 1.2 Amplifiers S & T VCC = 5.5V TAMB=+95C TAMB=+25C Low level output voltage (V) 1.0 0.8 0.6 0.4 0.2 0.0 -30 TAMB=-40C 1.0 0.8 0.6 0.4 0.2 0.0 -30 TAMB=+95C Amplifiers S & T VCC = 10V TAMB=+25C TAMB=-40C -25 -20 -15 -10 -5 0 -25 -20 -15 -10 -5 0 Output current (mA) Output current (mA) 7/16 Electrical characteristics TSL1020 Figure 20. Voltage output low (VOL) vs. output Figure 21. Voltage output low (VOL) vs. output current - Amplifiers S & T current - Amplifier COM 1.2 Low level output voltage (V) 1.6 Amplifiers S & T VCC = 16.8V TAMB=+25C TAMB=+95C Low level output voltage (V) 1.0 0.8 0.6 0.4 0.2 0.0 -30 Amplifier COM VCC = 5.5V 1.2 TAMB=+95C 0.8 TAMB=+25C 0.4 TAMB=-40C TAMB=-40C 0.0 -50 -25 -20 -15 -10 -5 0 -40 -30 -20 -10 0 Output current (mA) Output current (mA) Figure 22. Voltage output low (VOL) vs. output Figure 23. Voltage output low (VOL) vs. output current - Amplifier COM current - Amplifier COM 2.0 Low level output voltage (V) 2.0 TAMB=+95C 1.5 Low level output voltage (V) Amplifier COM VCC = 10V Amplifier COM VCC = 16.8V 1.5 TAMB=+95C TAMB=+25C 1.0 TAMB=+25C 1.0 0.5 TAMB=-40C 0.5 TAMB=-40C 0.0 -100 -80 -60 -40 -20 0 0.0 -100 -80 -60 -40 -20 0 Output current (mA) Output current (mA) Figure 24. Positive slew rate vs. temperature 1.6 Positive Slew Rate (V/s) Figure 25. Positive slew rate vs. temperature 1.6 Positive Slew Rate (V/s) VCC = 16.8V 1.2 VCC = 16.8V 1.2 VCC = 5.5V 0.8 VCC = 10V 0.8 VCC = 5.5V VCC = 10V 0.4 0.4 Amplifiers A & B 0.0 -40 -20 0 20 40 60 80 100 0.0 -40 Amplifiers C to T -20 0 20 40 60 80 100 Temperature (C) Temperature (C) 8/16 TSL1020 Electrical characteristics Figure 26. Positive slew rate vs. temperature 1.6 VCC = 16.8V Positive Slew Rate (V/s) Figure 27. Negative slew rate vs. temperature Negative Slew Rate (V/s) 1.2 VCC = 16.8V 1.2 0.8 VCC = 5.5V 0.8 VCC = 5.5V 0.4 VCC = 10V VCC = 10V 0.4 Amplifier COM 0.0 -40 0.0 -40 Amplifiers A & B -20 0 20 40 60 80 100 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) Figure 28. Negative slew rate vs. temperature Figure 29. Negative slew rate vs. temperature 1.6 Negative Slew Rate (V/s) Negative Slew Rate (V/s) 1.6 VCC = 16.8V VCC = 16.8V 1.2 1.2 0.8 VCC = 5.5V VCC = 10V 0.8 VCC = 5.5V 0.4 VCC = 10V 0.4 Amplifiers C to T Amplifier COM 0.0 -40 -20 0 20 40 60 80 100 0.0 -40 -20 0 20 40 60 80 100 Temperature (C) Temperature (C) Figure 30. Large signal response Amplifiers A & B 4 3 2 Vout (V) Figure 31. Large signal response Amplifiers A & B 4 3 2 Vout (V) 1 0 -1 -2 -3 -4 -1 Amplifiers A & B VCC=10V TAMB=+25C ZL=10k//16pF 1 0 -1 -2 -3 Amplifiers A & B VCC=10V TAMB=+25C ZL=10k//16pF 0 1 2 3 4 5 6 -4 -1 0 1 2 3 4 5 6 Time (s) Time (s) 9/16 Electrical characteristics TSL1020 Figure 32. Large signal response Amplifiers C to T 4 3 2 Vout (V) Figure 33. Large signal response Amplifiers C to T 4 3 2 Vout (V) 1 0 -1 -2 -3 -4 -1 Amplifiers C to T VCC=10V TAMB=+25C ZL=10k//16pF 1 0 -1 -2 -3 Amplifiers C to T VCC=10V TAMB=+25C ZL=10k//16pF 0 1 2 3 4 5 6 -4 -1 0 1 2 3 4 5 6 Time (s) Time (s) Figure 34. Large signal response Amplifier COM 4 3 2 Vout (V) Figure 35. Large signal response Amplifier COM 4 3 2 Vout (V) 1 0 -1 -2 -3 -4 -1 Amplifiers COM VCC=10V TAMB=+25C ZL=10k//16pF 1 0 -1 -2 -3 Amplifiers COM VCC=10V TAMB=+25C ZL=10k//16pF 0 1 2 3 4 5 6 -4 -1 0 1 2 3 Time (s) 4 5 6 7 Time (s) Figure 36. Small signal response Amplifiers A & B 0.15 0.10 0.05 Vout (V) Figure 37. Small signal response Amplifiers C to T 0.15 0.00 -0.05 -0.10 -0.15 0 1 Time (s) Vout (V) Amplifiers A & B VCC=10V TAMB=+25C ZL=10k//16pF Ve=100mVpp 0.10 0.05 0.00 -0.05 -0.10 -0.15 Amplifiers C to T VCC=10V TAMB=+25C ZL=10k//16pF Ve=100mVpp 2 3 0 1 Time (s) 2 3 10/16 TSL1020 Electrical characteristics Figure 38. Small signal response Amplifier COM 0.15 0.10 0.05 Vout (V) Figure 39. Output voltage response to current transient - Amplifiers A & B 2.0 0.00 -0.05 -0.10 -0.15 0 1 Time (s) Vout (V) Amplifiers COM VCC=10V TAMB=+25C ZL=10k//16pF Ve=100mVpp 1.5 1.0 Amplifiers A & B VCC=10V TAMB=+25C I=0mA to 30mA 0.5 0.0 2 3 -0.5 -1 0 1 Time (s) 2 3 Figure 40. Output voltage response to current Figure 41. Output voltage response to current transient - Amplifiers A & B transient - Amplifiers C to T 0.5 2.0 Amplifiers C to T VCC=10V TAMB=+25C I=0mA to 30mA 1.5 0.0 Vout (V) Vout (V) 1.0 -0.5 Amplifiers A & B VCC=10V TAMB=+25C I=30mA to 0mA 0.5 -1.0 0.0 -1.5 -1 0 1 Time (s) 2 3 -0.5 -1 0 1 Time (s) 2 3 Figure 42. Output voltage response to current Figure 43. Output voltage response to current transient - Amplifiers C to T transient - Amplifier COM 0.5 5 4 0.0 3 Vout (V) Vout (V) Amplifiers COM VCC=10V TAMB=+25C I=0mA to 100mA -0.5 Amplifiers C to T VCC=10V TAMB=+25C I=30mA to 0mA 2 1 0 -1 -1.0 -1.5 -1 0 1 Time (s) 2 3 0 2 4 Time (s) 6 8 11/16 Electrical characteristics TSL1020 Figure 44. Output voltage response to current transient - Amplifier COM 1 0 -1 Vout (V) Figure 45. Output voltage response to current transient - Amplifier COM 1 0 -1 Vout (V) -2 -3 -4 -5 -6 -5 Amplifiers COM VCC=10V TAMB=+25C I=100mA to -100mA -2 -3 -4 -5 0 2 4 Time (s) Amplifiers COM VCC=10V TAMB=+25C I=100mA to 0mA 6 8 0 5 10 Time (s) 15 20 25 Figure 46. 6 5 4 Vout (V) Output voltage response to current transient - Amplifier COM Amplifiers COM VCC=10V TAMB=+25C I=-100mA to +100mA 3 2 1 0 -1 -5 0 5 10 15 20 25 30 Time (s) 12/16 TSL1020 Package information 4 Package information In order to meet environmental requirements, STMicroelectronics offers these devices in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. Table 4. TQFP48 ePad package mechanical data Dimensions Ref. Min. A A1 A2 b c D D1 D2 D3 E E1 E2 E3 e L L1 k ccc 0 0.45 8.80 6.80 2.00 5.50 0.50 0.60 1.00 3.5 7 0.08 0 0.75 0.018 0.05 0.95 0.17 0.09 8.80 6.80 2.00 5.50 9.00 7.00 9.20 7.20 0.346 0.268 0.079 0.217 0.020 0.024 0.039 3.5 7 0.003 0.030 9.00 7.00 1.00 0.22 Millimeters Typ. Max. 1.20 0.15 1.05 0.27 0.20 9.20 7.20 0.002 0.037 0.007 0.004 0.346 0.268 0.079 0.217 0.354 0.276 0.362 0.283 0.354 0.276 0.039 0.009 Min. Inches Typ. Max. 0.047 0.006 0.041 0.011 0.008 0.362 0.283 13/16 Package information Figure 47. TQFP48 ePad package drawing TSL1020 14/16 TSL1020 Ordering information 5 Ordering information Table 5. Order codes Temperature range -40C to +95C TSL1020IFT Package TQFP48 ePad Tape & reel Packing Tray SL1020I Marking Order code TSL1020IF 6 Revision history Table 6. Date 28-Jan-2008 Document revision history Revision 1 Initial release. Changes 15/16 TSL1020 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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