IC for Other Information Equipment AN8001FHK Gradation voltage generation IC for liquid crystal display Unit : mm ■ Overview 24 1 12 0.20±0.05 0.50 (1.00) 0.10 M 0.15±0.05 (0.75) 13 1.20 max. 48 7.0±0.1 9.0±0.2 (0.75) 37 (1.0) • Incorporating a high precision reference voltage source : 1.23 V (typ.) • Wide dynamic range of buffer amplifiers and it is possible to provide an output from VCC − 0.2 V (the highest stage) to GND + 0.2 V (the lowest stage). • Large COM-amplifier drive current : ±100 mA (max.) 25 +0.10 ■ Features 36 0.10–0.05 The AN8001FHK is a gradation voltage generation IC for liquid crystal displays and designed for 64-gradation LCDs. It is incorporating an 1.23 V reference voltage circuit, 10 gradation output buffer amplifier circuits, and a COM amplifier circuit. 9.0±0.2 7.0±0.1 0° to 8° 0.5±0.1 TQFP048-P-0707B ■ Applications • Gradation power supply source for LCDs 1 AN8001FHK IC for Other Information Equipment 25 VA2 26 VA3 27 N.C. 28 VA4 29 GND2 30 N.C. 31 N.C. 32 N.C. 33 VB4 34 N.C. 35 VB3 36 VB2 ■ Block Diagram N.C. 37 24 N.C. VB1 38 23 VA1 VB0 39 22 VA0 L4 R0 N.C. 40 21 N.C. REF GND1 41 L3 20 VREF R1 COM1 42 19 VR L2 R2 COM0 43 VREF 18 VCC1 COM COMS 44 L1 17 VR0 R3 N.C. 45 16 N.C. L0 R4 Top View 2 VR3 12 VR4 11 N.C. 10 9 VCC2 8 N.C. 7 N.C. N.C. VL4 VL3 N.C. VL2 VL1 6 13 N.C. 5 N.C. 48 4 14 VR2 3 VL0 47 2 15 VR1 1 N.C. 46 IC for Other Information Equipment AN8001FHK ■ Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage VCC 14.2 V Supply current ICC mA IOsource −5 mA R0 amplifier output source current IO−R0 −15 mA R0 amplifier output sink current IO+R0 0.1 mA R1 amplifier output source current IO−R1 −15 mA R1 amplifier output sink current IO+R1 0.1 mA R/2/3/4, L2/3/4 amplifier output source current IO−R2−L2 −15 mA R/2/3/4, L2/3/4 amplifier output sink current IO+R2−L2 15 mA L1 amplifier output source current IO−L1 − 0.05 mA L1 amplifier output sink current IO+L1 15 mA L0 amplifier output source current IO−L0 − 0.05 mA L0 amplifier output sink current REF amplifier output source current IO+L0 15 mA COM amplifier output source current IO−COM −100 mA COM amplifier output sink current IO+COM 100 mA PD 400*2 mW Power dissipation 220*3 Topr 0 to + 70 °C temperature*1 Tstg −55 to + 150 °C REF amplifier maximum load capacitance COREF 0.47 mF R0/1/2/3/4, L4/3/2/1/0 amplifier maximum load capacitance COR/L 0.1 µF COM amplifier maximum load capacitance COCOM 10 µF Operating ambient temperature*1 Storage Note) Either current or voltage should not be applied from the outside to any terminals not specified. For the circuit current, (+) is current flowing into the IC and (−) is current flowing out of the IC. Set the input voltage of each amplifier within the range of the output voltage. *1 : All items are at Ta = 25°C, except for the operating ambient temperature and storage temperature parameters. *2 : Ta = 25°C *3 : Ta = 70°C ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VCC 7 to 14 V 3 AN8001FHK IC for Other Information Equipment ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit ICC 3.5 6 mA Reference voltage VREF 1.19 1.23 1.27 V Input bias current IB 500 nA All device Circuit current REF amplifier block Operating upper limit voltage 1 VH1 Discharge current : 2 mA Connect 0.1 µF or more for oscillation prevention VCC − 0.2 V V Operating upper limit voltage 2 VH2 Discharge current : 3 mA Connect 0.1 µF or more for oscillation prevention VCC − 0.3 V V Operating lower limit voltage VL Connect 0.1 µF or more for oscillation prevention VREF V Output upper limit voltage 1 VH,R01 Discharge current : 10 mA VCC − 0.2 V V Output upper limit voltage 2 VH,R02 Discharge current : 15 mA VCC − 0.25V V Output lower limit voltage VL,R0 Sink current : 0.1 mA VCC −3 V V 10 mV VCC − 0.7 V V VCC/2 V 10 mV VCC −1.5 V V 2 V VCC −2 V V R0 amplifier block Offset voltage VOFFR0 R1 amplifier block Output upper limit voltage VH,R1 Discharge current : 15 mA Output lower limit voltage VL,R1 Sink current : 0.1 mA Offset voltage VOFFR1 R2/R3/R4/L2/L3/L4 amplifier block Output upper limit voltage 1 VH,R2-R4 Discharge current : 15 mA Output lower limit voltage 1 VL,R2-R4 Sink current : 15 mA Output upper limit voltage 2 VH,L2-L4 Discharge current : 15 mA Output lower limit voltage 2 VL,L2-L4 Sink current : 15 mA 1.5 V Offset voltage VOFF234 10 mV VCC/2 V 0.7 V 15 mV L1 amplifier block 4 Output upper limit voltage VH, L1 Discharge current : 50 µA Output lower limit voltage VL, L1 Sink current : 15 mA Offset voltage VOFFL1 IC for Other Information Equipment AN8001FHK ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit L0 amplifier block Output upper limit voltage VH, L0 Discharge current : 50 µA 3 V Output lower limit voltage VL, L0 Sink current : 15 mA 0.2 V Offset voltage VOFFL0 15 mV VCC −2.5 V V COM amplifier block Output upper limit voltage VH, COM Discharge current : 100 mA Output lower limit voltage VL, COM Sink current : 100 mA 2.5 V Offset voltage VOFFCOM 10 mV Min Typ Max Unit • Design reference data Note) The following characteristics are the reference values for design and not guaranteed values. Parameter Symbol Conditions Recovery time Ri-Time COM 2 µS REF amplifier block Supply voltage rejection ratio PSRRREF f = 10 kHz to 500 kHz 200 mV[p-p], 0.1 µFconnection −40 dB R0 amplifier block Supply voltage rejection ratio PSRRR0 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µFconnection −10 dB R1 amplifier block Supply voltage rejection ratio PSRRR1 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µF connection −20 dB R2/R3R/4 amplifier block Supply voltage rejection ratio PSRRR234 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µF connection −40 dB R2/R3R/4 amplifier block Supply voltage rejection ratio PSRRL234 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µF connection −40 dB L1 amplifier block Supply voltage rejection ratio PSRRL1 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µF connection −10 dB L0 amplifier block Supply voltage rejection ratio PSRRL0 f = 10 kHz to 500 kHz 200 mV[p-p], 0.01 µF connection −20 dB COM amplifier block Supply voltage rejection ratio PSRRCOM f = 10 kHz to 500 kHz 200 mV[p-p], 0.1 µF connection −40 dB 5 AN8001FHK IC for Other Information Equipment ■ Technical Data • Characteristics curve Power supply current temperature characteristics (ICC Ta) Reference voltage temperature characteristics (VREF Ta) 1.26 5 4 Reference voltage (V) Power supply current (mA) 1.25 3 2 1.24 1.23 1.22 1.21 1.20 1.19 1 −25 0 25 50 75 1.18 −25 100 Ambient temperature (°C) 0 25 50 75 100 Ambient temperature (°C) ■ Application Example • System configuration example COM amplifier 10 source driver VR0 VR1 VR2 Liquid crystal panel VL2 H, V, CLK Data 6 Control signal VL0 Display data VL1 Control signal Display controller Gate driver AN8001FHK IC for Other Information Equipment AN8001FHK ■ Application Example (continued) 1.23V 19 VR 20 VREF 9 V CC2 18 V CC1 • Application circuit example VREF 41 GND1 VR0 22 VA0 17 OPA0 805 Ω by 8 divisions VR1 23 VA1 15 OPA1 275 Ω by 24 divisions VR2 25 VA2 14 OPA2 160 Ω by 24 divisions VR3 26 VA3 12 345 Ω by 7 divisions OPA3 VR4 11 28 VA4 OPA4 VL4 33 VB4 5 OPB4 345 Ω by 7 divisions VL3 35 VB3 4 OPB3 160 Ω by 24 divisions VL2 36 VB2 2 275 Ω by 24 divisions OPB2 VL1 38 VB1 1 OPB1 805 Ω by 8 divisions VL0 47 39 VB0 OPB0 COMS 44 COMO 43 29 GND2 42 COMI OPCOM 7 AN8001FHK IC for Other Information Equipment ■ Application Example (continued) <Recommended operating conditions> 8 Parameter Symbol Ratings Unit Notes Supply voltage VCC 10.5 V Load capacitance CLOAD 0.01 µF VR0 to VL0 0.1 to 1 µF COM0 0.1 µF VREF