DIONICS, INC. Phone: (516) 997-7474 Fax: (516) 997-7479 Website: www.dionics- usa.com 65 Rushmore Street Westbury, NY 11590 DI-300 DI-302 LEVEL-SHIFTED GAS DISCHARGE DISPLAY SEGMENT DRIVER General Description: The DIONICS DI-300 and DI-302 are designed to drive gas discharge digital display devices from signals developed in MOS or TTL circuitry. Each output constitutes a switched constant current sink with a compliance of up to 100V. This output level can absorb large fluctuation of supply voltage. The signal is boosted in level by up to 200V (DI-300) or 125V (DI-302). This eases interfacing between logic circuitry and display, thus reduces costs. Circuit Schematic (Each Section) Input A Output Features: ü ü ü ü ü ü ü ü ü Monolithic Silicon Dielectrically Isolated Integrated Circuit Programmable Constant Current Output Current Output Range: 0.1 - 2.5mA 200V (DI-300) or 125V (DI-302) Operation Plastic 18-Pin DIP Package Level Shifted For Ease Of Use MOS and TTL Compatibility Eight-Channel Operation Pin For Pin Replacement For Sprague UDN 7183A, UDN 7184A or UDN 7186A V- Package Layout: Pin Connections DIONICS INC. DI-302 0.250 0.900 Out1 Out2 Out3 Out4 Out5 Out6 Out7 Out8 V - 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 In1 In2 In3 In4 In5 In6 In7 In8 A 0.185 0.020 0.025 0.070 0.100 08/2002 Absolute Maximum Rating (Ta = 25 0 C) Characteristic Symbol Limits Notes DI-300 -200 DI-302 -125 Units Supply Voltage V- Measured With Respect to Terminal “A” Input Voltage Vin Measured With Respect to Other Terminal ± 20 ± 20 V Input Voltage Output Voltage VIA Vo Measured With Respect to Terminal “A” 20 100 20 100 V V Output Current Io 2.5 2.5 mA Power Dissipation Storage Temp. PD Ts 800 -55 to +125 800 -55 to +125 mW 0 C 0 to +70 0 to +70 Measured With Respect to V – Above 250 C Ambient, Derate at 8 mW / 0 C Operating Temp.* To 0 0 * Ceramic (-20 C to +85 C) V 0 Electrical Characteristics (Ta = 25 0 C) Parameter Symbol Conditions Output Saturation Voltage Vo (SAT) Io = 1mA; Vs = 100V DI-302 Units Min. Typ. Max. − 15 − V Output Leakage Current Io (OFF) Vs = 125V; Vo = 100V; VIA = 0V − Output Current Match Output Current ∆Io / Io Io (ON) Vs = 100V; Vo = 60V; VIA = 1.2V Vs = 100V; Vo = 60V; VIA = 1.2V − 0.5 Io = 1mA; Vs = 100V Vs = 200V; Vo = 100V; VIA = 0V − − Output Saturation Voltage Vo (SAT) Output Leakage Current Io (OFF) 1 10 ± 10 ± 20 0.85 1.2 DI-300 15 − 1 10 µA % mA V µA Output Current Match ∆Io / Io Vs = 200V; Vo = 60V; VIA = 2V − 10 20 % Output Current Io (ON) Vs = 200V; Vo = 60V; VIA = 2V 0.5 0.85 2.5 mA Simplified Test Circuit A Via + + Vs Io Ii + V- Vo C DI-300 Typical Application KEYBOARD 4.7M K0 -14V 10uF K1 9 DTO K2 K3 (4) 22K 10 MRI 19 Sa 18 Sb 17 15 14 13 10-DIGIT CALCULATOR WESTERN DIGITAL LC - 1692 B 30 D1 D2 D3 D4 D5 D6 Sc D7 Sd D8 Se D9 Sg 11 21 22 23 24 25 - 30 V 26 27 28 29 32 D10 20 D11 Sf 12 Sdp 1,7 (10) 1N4001 (Optional) -14V Vss 8 Vdd -7V 35 D11 Vgg D10 D7 D6 D5 D4 D3 D2 D1 10K I1 I2 I3 I4 I5 I6 I7 I8 A DIONICS DI-300 9 Display Intensity (11) 1N4001 (Optional) DISPLAY (4) BECKMAN 333 Sa -14V D8 -14V 1 2 3 4 5 6 7 8 3.9K D9 O1 O2 O3 O4 O5 O6 O7 O8 V- 18 17 16 15 14 13 12 11 10 -150 V to -180V Sb Sc Sd Se Sf Sg Sdp DI-302 Typical Application These diagrams depict typical methods for setting output (Cathode) current levels. In some cases, resistor values should be varied to adjust output current to a proper level for the particular display device used TTL Interface +5V +5V (Vcc) MOS Interface DI-302 A DI-302 -100V V -15V (Vdd) -14 V To Setting Circuit 5 IN1 D4 11 4 IN2 3 IN3 D3 10 D2 9 D1 8 A 24 25 27 Vdd 26 22 Vss 1 Sa 18 Sb 17 Sc 16 Sd 15 Se 19 Sf 20 Sg 21 Spm 14 8 -15V (Vdd) A +100 V DIONICS 10 4 DI-502 11 3 ANODE 12 DRIVER 14 1 60 Hz 27K 1.5K D1 D2 D3 D4 BURROUGHS CD-4073-GM Sa Sb Sc Sd Se Sf Sg Spm 150pF 1 2 3 4 DIONICS 5 DI-302 6 CATHODE 7 DRIVER 8 9 + Display Intensity -100V V 5 3.9K -14V DI-302 7 CT 7001 23 CLOCK / CALENDAR 0.01 -14 V MOS Interface 10 uF 18 17 16 15 14 13 12 11 10 -100 V V -100V