TA8696

TA8696F TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8696F γ Correction IC for LCD TV TA8696F operates with a power supply voltage of 3.3 to 7.5 V and can be directly driven with a dry battery. Features · · · · · · Enables high-precision γ correction using logarithmic compression. γ correction for normally white LCD panel is possible. Offset/cancel input circuit enables high-quality γ correction without distorting the primary color input signals. Cut-off voltage and drive voltage can be independently controlled. Unsusceptible to negative effects of fluctuation of power supply voltage. Either latch mode or through mode can be selected using the CH display mode switching pin. Weight: 0.63 g (typ.) Block Diagram (+13 V) H.VCC F.F. Output HD VD Cutoff VO Center Output B G 23 Output Amp R 22 F.F. H.GND Control 21 20 19 18 B G Input offset COM control CP 28 27 26 25 30 29 24 17 16 Pulse Modulation F.F. Current Conversion Polarity Switching Level Control Input Detection CH Display Switching g Correction Input Latch 1 2 B 3 G 4 R BS/H 5 6 B Offset, Cancel 7 G Input 8 R 9 L.GND RS/H Vref B G Drive COM L.VCC (+4 V) 10 11 Current Conversion Reference Voltage Current Conversion 12 13 14 15 Channel Mode Channel Input 1 2002-02-13 TA8696F Pin Function Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Pin Name Mode Switch CH B Input CH G Input CH R Input BS/H B Input G Input R Input L.GND RS/H Vref B Drive R Drive COM Drive L.VCC g Offset COM Cut-off R Cut-off B Cut-off H.GND F.F. CONT. R Output G Output B Output VO Center H.VCC F.F. Output CP VD HD Reference Voltage (V) 0 0 0 0 1.6 1.6 1.6 1.6 0 1.6 1.6 2 2 2 4.0 2 2 2 2 0 1.4 6.5 6.5 6.5 6.5 13.0 0.2 0.9 1.4 0.9 Reference Current (mA) 0 0 0 0 0 0 0 0 -8.1 0 0 0 0 0 8.1 0 0 0 0 -4.6 ¾ 0 0 0 0 4.6 0 0 0 0 Red signal input Green signal input Blue signal input CH display signal blue input Function CH display mode switching (latch mode/through mode) CH display signal green input CH display signal red input Blue input signal sample and hold capacitor Blue primary color input Green primary color input Red primary color input Low-voltage signal GND Red input signal sample and hold capacitor Internal reference voltage B-axis drive control R-axis drive control Common drive control Low-voltage signal VCC g correction starting point control Common cut-off control R-axis cut-off control B-axis cut-off control High-voltage signal GND ¾ Signal output center voltage control High-voltage signal VCC Flip-flop output Clamp pulse input Vertical drive pulse input Horizontal drive pulse input Note 1: Reference voltage and reference current are for DC bias with no signal. The current which flows into the IC considered to be positive current. 2 2002-02-13 TA8696F Pin No. Pin Name and Function Typical Signal Level Internal bias Mode switch Switches channel indication mode 1 High level: Character mode Low level: Latch mode (synchronized with HD) ViH = L.VCC ViL = GND VTH = 1.9 V ViH Max = L.VCC ViL Min = GND Clamped on L.VCC and GND Internal bias CH B input 2 3 4 CH G input CH R input Channel indication signal Input pin 0V 5V 0V VTH = 1.7 V ViH Max = 5.5 V ViL Min = GND Clamped on GND 2 3 4 60 kW 40 kW L.VCC RS/H External capacitance 1 mF 5 10 100 W BS/H 5 10 Internal bias 1.6 V 100 W 1 kW 1 kW 50 mA 2 kW 50 mA 6 7 8 14 kW L.VCC 5 kW Vref 11 Internal standard voltage reference pin Internal bias 1.6 V Permissible load current 0 Clamped on L.VCC and GND 11 32 kW 50 mA 30 kW 8 kW 50 mA L.VCC Internal bias White signal level Black signal level 1.6 V 1.6 V 0.9 V 1 30 kW 0V Interface Current L.VCC 50 kW Regenerate B/R-axis direct Permissible load current current voltage 0 Capaciator pin Clamped on L.VCC and GND 6 7 8 B input G input R input Primary color input pins Maximum input level 1.4 Vp-p Clamped on L.VCC and GND 3 2002-02-13 TA8696F Pin No. Pin Name and Function Typical Signal Level Interface Current L.VCC 5 kW 12 13 18 19 40 kW 50 mA 5 kW 12 13 18 19 B drive R drive R cut-off B cut-off Internal bias L.VCC/2 ViH Max = L.VCC ViL Min = GND Clamped on L.VCC and GND L.VCC 5 kW 20 kW Internal bias L.VCC/2 14 17 COM drive COM cut-off ViH Max = L.VCC ViL Min = GND Clamped on L.VCC and GND 14 17 40 kW 50 mA 50 mA L.VCC 5 kW Internal bias L.VCC/2 16 g off-set ViH Max = L.VCC ViL Min = GND Clamped on L.VCC and GND 16 50 mA 50 mA 6.5 kW 100 mA 100 mA 40 kW Inverted in sync with VD 11.5 Black signal level 8.5 White signal level 6.5 4.5 White signal level 1.5 Black signal level Clamped on H.VCC and GND H.VCC 23 24 G output B output 50 kW 4 2002-02-13 25 kW 22 23 24 50 kW 6.5 kW 22 R output 150 mA TA8696F Pin No. Pin Name and Function Typical Signal Level Interface Current H.VCC Internal bias H.VCC/2 25 VO center ViH Max = H.VCC ViL Min = GND Clamped on H.VCC and GND 25 65 kW 65 kW H.VCC 13 W 30 W 8 kW L.VCC 50 mA 28 1 kW H.VCC 45 kW 3.0 V 29 27 21 L.VCC 50 mA 50 mA 30 1 kW Desaturated open collector output Maximum sink current 0.5 mA (VoL Max = 0.3 V) VoH Max = H.VCC Clamped on H.VCC and GND Be sure CP is correspondent to the back porch of primary color input signal. Input 28 CP Clamp pulse input CP VTH = 1.6 V ViH Max = 5.5 V ViL Min = GND Clamped on H.VCC and GND Be sure VD falls within the vertical blanking period of primary color input signal. 5V 0V 1V VTH = ViH Max = 5.5 V ViL Min = GND Clamped on H.VCC and GND Be sure HD falls within the horizontal blanking period of primary color input signal. 5V 0V 30 HD input 27 F.F. output 5V 0V 29 VD input Vertical drive pulse input 1H VTH = 0.9 V ViH Max = 5.5 V ViL Min = GND Clamped on GND 100 mA 5 2002-02-13 TA8696F Maximum Ratings (Ta = 25°C) Characteristics Power supply voltage Power supply voltage Power dissipation Power dissipation lowering rate Operating temperature Storage temperature Symbol L.VCC H.VCC PD qja Topr Tstg Rating 8 14.5 890 7.2 -20 to +75 -55 to 150 Unit V V mW mW/°C °C °C Note 2: When the IC is operated at 25°C or higher, reduce power dissipation by 12.8 mW per degree. Recommended Power Supply Voltage Pin No. 15 26 Pin Name L.VCC H.VCC Min 3.3 10.0 Typ. 5.0 13.0 Max 7.5 14.0 Unit V Electrical Characteristics (unless otherwise specified, VCC = 4 V, Ta = 25°C) Characteristics [1] Operating range Primary color input white signal level Primary color input black signal level CH indication signal level Timing pulse level [2] Electrical characteristics Operating power supply current (1) Operating power supply current (2) Input signal dynamic range Input signal pin resistor Input signal pin capacity Black signal level off-set Black signal level off-set difference in the axes Black signal level off-set adjustment amount Black signal level off-set adjustment sensitivity Input off-set elimination capacity Off-set cancel difference in the axes Typical gain Typical gain difference in the axes Typical gain difference in the polarity Maximum gain Minimum gain ¾ ¾ ¾ RIN CIN ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 g off-set open ¾ ¾ ¾ ¾ ¾ Drive adjustment open Drive adjustment open Drive adjustment open ¾ ¾ Pin 15.L.VCC = 4 V No load. Pin 26.H.VCC = 13 V No load. ¾ ¾ ¾ 5.8 3.2 1.2 10.5 ¾ ¾ ¾ ¾ ¾ 20 ¾ 9.4 ¾ ¾ 15.4 ¾ 8.4 4.6 1.4 14.0 1 100 50 0.3 300 26 50 12.4 0.5 0.5 18.4 -20 10.9 6.0 1.6 17.5 3 200 100 ¾ ¾ ¾ ¾ 15.4 ¾ ¾ ¾ -10 mA mA V kW pF mV mV V mV/V dB mV dB dB dB dB dB ¾ ¾ ¾ ¾ 2 2 2 2 The same conditions are given to R/G/B-axis. The same conditions are given to R/G/B-axis. The same conditions are given to R/G/B-axis. HD , VD , LD Symbol Test Circuit Test Condition Min Typ. Max Unit ¾ ¾ 3 3 1.6 0.9 5 5 ¾ ¾ 5.5 5.5 V V V V 6 2002-02-13 TA8696F Characteristics Gain control sensitivity Polarity reverse center voltage Polarity reverse center voltage difference in the axes Polarity reverse center voltage variable range Polarity reverse center voltage controlling sensitivity Typical cut-off level (N.W) Cut-off level difference in the axes Cut-off level variable amount Cut-off level controlling sensitivity Output dynamic range Output impedance Frequency characteristic Frequency characteristic difference in the axes Slew rate Slew rate difference in the axes Crosstalk in the axes Direct current transmission rate S/N N CH indication signal threshold CH indication mode switch threshold CH indication output delay (line mode) CH indication output delay (dot mode) CH indication latch minimum operation voltage HD pulse threshold LD pulse threshold VD pulse threshold F.F. minimum operation voltage F.F. phase delay F.F. response frequency F.F. output high level F.F. output low level g correction value (1) NW g correction value (2) NW g correction value difference in the axes (1) g correction value difference in the axes (2) Symbol ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ Test Circuit 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Test Condition ¾ Vo center pin open ¾ ¾ ¾ Difference from Vo center voltage ¾ ¾ ¾ ¾ ¾ Loaded amount 120 pF, -3dB point Loaded amount 120 pF, -3dB point Loaded amount 120 pF Loaded amount 120 pF ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ ¾ Min ¾ 6.3 ¾ ¾ ¾ ±4.8 ¾ ¾ ¾ ¾ ¾ 3 ¾ ¾ ¾ ¾ ¾ 40 ¾ ¾ ¾ ¾ ¾ 1.3 1.3 1.3 ¾ ¾ 20 11.0 0.1 ¾ ¾ ¾ ¾ Typ. 6 6.5 50 2 1 ±5 50 ±4 2 10 10 4 0.1 4 ¾ 50 100 50 2.2 2.2 1 0.1 ¾ 1.6 1.6 1.6 ¾ 3 ¾ 13.0 0.3 0.35 20 ¾ ¾ Max ¾ 6.7 100 ¾ ¾ ±5.2 100 ¾ ¾ ¾ ¾ ¾ 0.3 ¾ 10 40 ¾ ¾ ¾ ¾ ¾ ¾ 3 1.9 1.9 1.9 10 ¾ ¾ ¾ 0.5 ¾ ¾ 10 10 Unit dB/V V mV V V/V V mV V V/V Vp-p W MHz MHz V / ms % dB % dB V V ms ms V V V V V ms kHz V V ¾ ¾ % % 7 2002-02-13 TA8696F Test Circuit 1 Direct Current Characteristic H.VCC 13.0 V 10 mF/25 V 25 0.01 mF C26A 26 30 HD 29 VD 28 CP 27 C26B 24 B 23 G Output 22 R 21 20 H.GND 19 B 18 G Cutoff Drive 17 COM 16 g Offset F.F. H.VCC VO Output Center Channel Mode 1 Channel Input B 2 G 3 R 4 BS/H 5 1 mF/50 V B 6 Input G 7 R 8 L.GND RS/H 9 10 1 mF/50 V Vref 11 B 12 G 13 COM L.VCC 14 15 10 mF/10 V 20 kW T15 L.VCC 10 mF/10 V C15B 0.01 mF 20 kW C15A Note 3: Connect test pins directly to IC pins. (not shown above.) Test value is written as V.1 to V.30. Test Circuit 2 Alternating Current Characteristic T26 H.VCC 10 mF/25 V VR25 VR19 VR18 VR17 VR16 120 pF C23 120 pF C22 20 kW C26B 0.01 mF C26A 50 kW 120 pF 20 kW 20 kW R27 SW 25 SW 24 SW 23 SW 22 26 25 24 B 23 G Output Input 22 R 21 20 H.GND 19 B SW 19 SW 18 SW 17 SW 16 18 G Cutoff Drive 17 COM 16 g Offset 30 HD 29 VD 28 CP 27 F.F. H.VCC VO Output Center Channel Mode 1 Channel Input B 2 G 3 R 4 BS/H 5 1 mF/50 V B 6 G 7 R 8 L.GND RS/H 9 10 1 mF/50 V Vref 11 B 12 G 13 COM L.VCC 14 15 C10 C5 SW 11 SW 12 SW 13 SW 14 20 kW VR13 20 kW VR14 M1 to M30 Power voltage and waveform testing pins. Note 4: The numbers of testing pins are not shown above because they are the same as IC pin numbers. VR12 T1 to T30 Power supply and bias signal apply pins. 20 kW C24 8 0.01 mF C15A C15B C10 C5 L.VCC 4.0 V 2002-02-13 TA8696F g Curve (G-axis) 5.0 Drive adjustment point 11.5 10.5 9.5 4.0 Input/Output Characteristic to V14 V14 = 0.5 ® 3.5 V V14 = 0.5 V V14 = 3.5 V (V) 8.5 Output level Vout Adjustment point 0.8 1.0 1.2 1.4 1.6 3.0 (V) 2.0 1.0 7.5 6.5 5.5 4.5 3.5 2.5 1.5 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Input level (V) Vin (V) Input/Output Characteristic to a Change of V16 11.5 10.5 9.5 8.5 V16 = 3.0 V V16 = 2.0 V 7.5 6.5 5.5 4.5 3.5 2.5 1.5 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2.0 V16 = 4.0 V V16 = 1.0 V 9.1 7.8 6.5 5.2 3.9 2.6 1.3 0 0 0.2 13 11.7 10.4 Input/Output Characteristic to V17 V17 = 0.5 ® 3.5 V V17 = 2.0 V V17 = 0.5 V (V) (V) Vout Vout V17 = 3.5 V 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Vin (V) Vin (V) 9 2002-02-13 TA8696F Typical Application Circuits 0.01 mF H.VCC (+13 V) F.F. Output HD VD Cutoff B Output 0.01 mF B 24 G 23 Output Amp R 22 H.GND 20 19 18 G VO Center Input offset COM control CP 28 20 kW 27 26 30 29 25 47 mF 21 17 16 Pulse Modulation F.F. Current Conversion Polarity Switching Level Control Input Detection CH Display Switching g Correction Input Latch 1 2 B 3 G 4 1 mF R 5 6 B Offset, Cancel 7 G Input 8 R 9 L.GND 10 1 mF 11 Current Conversion Reference Voltage Current Conversion 12 13 14 15 0.01 mF 47 mF B G Drive COM L.VCC (+4 V) Channel Mode Channel Input BS/H RS/H ○ All control VR is 20 kB. Connect 0.01 mF close to each control pin. 10 2002-02-13 TA8696F Package Dimensions Weight: 0.63 g (typ.) 11 2002-02-13 TA8696F RESTRICTIONS ON PRODUCT USE 000707EBA · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc.. · The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer’s own risk. · The products described in this document are subject to the foreign exchange and foreign trade laws. · The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. · The information contained herein is subject to change without notice. 12 2002-02-13