ALD555PAL

ADVANCED LINEAR DEVICES, INC. ALD555 HIGH SPEED CMOS TIMER GENERAL DESCRIPTION APPLICATIONS The ALD555 timer is a high performance monolithic timing circuit built with advanced silicon gate CMOS technology. It offers the benefits of high input impedance, thereby allowing smaller timing capacitors and longer timing cycle; high speed, with typical cycle time of 500ns; low power dissipation for battery operated environment; reduced supply current spikes, allowing smaller and lower cost decoupling capacitors. It is capable of producing accurate time delays and oscillations in both monostable and astable operation. It operates in the one-shot (monostable) mode or 50% duty cycle free running oscillation mode with a single resistor and one capacitor. The inputs and outputs are fully compatible with CMOS, NMOS or TTL logic. • High speed one-shot (monostable) There are three matched internal resistors (approximately 200KΩ each) that set the threshold and trigger levels at two-thirds and onethird respectively of V+. These levels can be adjusted by using the control terminal (pin 5). When the trigger input is below the trigger level, the output is in the high state and sourcing 2mA. When threshold input is above the threshold level at the same time the trigger input is above the trigger level, the internal flip-flop is reset, the output goes to the low state and sinks up to 10mA. The reset input overrides all other inputs and when it is active (reset voltage less than 1V), the output is in the low state. pulse generation Precision timing Sequential timing Long delay timer Pulse width and pulse position modulation • Missing pulse detector • Frequency divider • • • • PIN CONFIGURATION GROUND 1 8 V+ TRIGGER 2 7 DISCHARGE OUTPUT 3 6 THRESHOLD RESET 4 5 CONTROL SAL, PAL, DA PACKAGES FEATURES • Functional equivalent to NE555 with greatly expanded high and low frequency ranges • High speed, low power, monolithic CMOS technology • Low supply current: 100µA typical • Extremely low trigger, threshold and reset currents:1pA typical • High speed operation -- 2MHz oscillation • Low operating supply voltage of 2 to 12V • Operates in both monostable and astable modes • Fixed 50% duty cycle or adjustable duty cycle • CMOS, NMOS and TTL compatible input/output • High discharge sinking current of 80mA • Low supply current spikes BLOCK DIAGRAM V+ (8) RESET (4) THRESHOLD (6) CONTROL (5) ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS)) 0°C to +70°C Operating Temperature Range * 0°C to +70°C -55°C to +125°C 8-Pin Small Outline Package (SOIC) 8-Pin Plastic DIP Package 8-Pin CERDIP Package ALD555SAL ALD555PAL ALD555DA R R OUTPUT (3) R S TRIGGER (2) DISCHARGE (7) R GND (1) * Contact factory for leaded (non-RoHS) or high temperature versions. Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286 www.aldinc.com ABSOLUTE MAXIMUM RATINGS Supply voltage, V+ Input voltage range Power dissipation Operating temperature range 13.2V -0.3V to V+ +0.3V 600 mW 0°C to + 70°C -55°C to +125°C -65°C to +150°C +260°C SAL, PAL packages DA package Storage temperature range Lead temperature, 10 seconds OPERATING ELECTRICAL CHARACTERISTICS TA = 25oC V+ = +5V unless otherwise specified Parameter Symbol Supply Voltage V+ Supply Current IS Timing error / Astable mode Initial Accuracy terr Drift with Temperature 1 Drift with Supply Voltage 1 ∆t/∆T ∆t/∆V+ Threshold Voltage VTH 3.233 3.333 3.433 V Trigger Voltage VTRIG 1.607 1.667 1.737 V Trigger Current 2 ITRIG .001 0.2 nA Reset Voltage VRST 0.7 1.0 V Reset Current 2 IRST .001 0.2 nA Threshold Current 2 ITH .001 0.2 nA Control Voltage Level VCONT 3.333 3.393 V Output Voltage Drop (Low) VOL 0.2 0.4 V ISINK = 10mA Output Voltage Drop (High) VOH 4.2 V ISOURCE = -2mA Rise Time of Output 1 tr 15 30 ns RL = 10MΩ Fall Time of Output 1 tf 10 30 ns CL = 10pF Discharge Transistor Leakage Current IDL .01 Discharge Voltage Drop VDISC 0.5 0.2 Maximum Frequency Astable Mode fMAX Notes: 1 2 ALD555 Min Typ Max 2 3.273 1.4 Test Conditions 12 V 100 180 µA Outputs Unloaded 1.0 2.2 % C = 0.1µF ppm/°C %/V RA = 1KΩ RB = 1KΩ 10.0 0.1 0.4 Unit 2 nA 1.0 0.4 V V I DISCHARGE = 80mA I DISCHARGE = 30mA MHz RA = 470Ω RB = 200Ω CT = 200pF Sample tested parameters. Consists of junction leakage currents with strong temperature dependence. Advanced Linear Devices 2 of 7 TYPICAL PERFORMANCE CHARACTERISTICS MINIMUM PULSE WIDTH REQUIRED FOR TRIGGERING DISCHARGE OUTPUT SINK CURRENT AS A FUNCTION OF DISCHARGE LOW VOLTAGE 800 50 V+ = 12V TA = 25°C MINIMUM PULSE WIDTH (ns) DISCHARGE SINK CURRENT (mA) 100 V+ = 5V 20 V+ = 2V 10 5.0 2.0 1.0 0.5 0.2 700 TA = 25°C 600 500 V+ = 2V 400 V+= 5V 300 V+ =12V 200 100 0 0.1 0.01 0.02 0.05 0.1 0.2 0.5 1.0 FREE RUNNING FREQUENCY AS A FUNCTION OF RA, RB AND C CAPACITANCE 10 µF 1 µF 10 10 100 nF 10 nF 10 0M 1 nF 1M 0K Ω M Ω 10 1K KΩ Ω Ω Ω FREQUENCY CHANGE (%) ( RA- 2RB) TA = 25°C 100 µF +3 +2 +1 0 -1 -2 -3 100 pF -4 0.1 0 1.0 10 100 1K 10K 100K 1M 10M 100M 8 10 12 SUPPLY CURRENT AS A FUNCTION OF SUPPLY VOLTAGE 200 180 RA SUPPLY CURRENT (uA) TA = 25°C Ω Ω 0K Ω K 1K 10 Ω 1M MΩ Ω 10 0M 10 Ω 1G 160 140 TA = - 40°C 120 TA = + 20°C 100 TA = + 85°C 80 60 40 20 100 pF 0 100ns 1µs 10µs 100µs 1ms 10ms 100ms 1s 10s 100s TIME DELAY ALD555 6 TIME DELAY IN THE MONOSTABLE MODE AS A FUNCTION OF RA AND C 10 CAPACITANCE 1 nF 4 SUPPLY VOLTAGE (V) 100 µF 10 nF 2 FREQUENCY (Hz) 10 mF 100 nF 40 +4 1 mF 1 µF 30 FREQUENCY CHANGE IN THE ASTABLE MODE AS A FUNCTION OF SUPPLY VOLTAGE 10 mF 10 µF 20 LOWEST VOLTAGE LEVEL OF TRIGGER PULSE ( % V+ ) DISCHARGE LOW VOLTAGE (V) 1 mF 10 0 0 2 4 6 8 10 12 SUPPLY VOLTAGE (V) Advanced Linear Devices 3 of 7 OUTPUT SINK CURRENT AS A FUNCTION OF OUTPUT VOLTAGE OUTPUT SINK CURRENT (mA) 100 TA = 25°C 50 V+ = 5V V+ = 12V 20 10 5.0 V+ = 2V 2.0 1.0 0.5 0.2 OUTPUT SOURCE CURRENT (mA) TYPICAL PERFORMANCE CHARACTERISTICS (cont'd) OUTPUT SOURCE CURRENT AS A FUNCTION OF OUTPUT VOLTAGE -0.1 V+ = 2V V+ = 5V V+ = 12V -0.2 -0.5 -1.0 -2.0 -5.0 -10 -20 -50 -100 0.1 0.01 0.02 0.05 0.1 0.2 0.5 -0.5 -1.0 1.0 -0.2 -0.1 -0.05 -0.02 -0.01 OUTPUT VOLTAGE (V) (REFERENCED TO V+) OUTPUT VOLTAGE (V) TYPICAL APPLICATIONS ASTABLE MODE OPERATION (FREE RUNNING OSCILLATOR) ASTABLE MODE OPERATION 50% DUTY CYCLE V+ 1 8 2 7 V+ 1 8 2 7 RA 0.1µF 0.1µF RB R 3 6 V+ 4 3 6 4 5 V+ C 5 Frequency f = 1/ (1.4 RC) C Frequency f = 1.46 / (RA + 2RB)C Duty Cycle DC = RB / (RA + 2RB) MONOSTABLE MODE OPERATION (ONE SHOT PULSE) Pulse Delay td = 1.1 RC V+ 1 8 R TRIGGER INPUT DELAYED PULSE OUTPUT 2 7 3 6 4 5 0.1µF C RESET ALD555 Advanced Linear Devices 4 of 7 SOIC-8 PACKAGE DRAWING 8 Pin Plastic SOIC Package E Millimeters Dim S (45°) D A Min 1.35 Max 1.75 Min 0.053 Max 0.069 A1 0.10 0.25 0.004 0.010 b 0.35 0.45 0.014 0.018 C 0.18 0.25 0.007 0.010 D-8 4.69 5.00 0.185 0.196 E 3.50 4.05 0.140 0.160 1.27 BSC e A A1 e Inches 0.050 BSC H 5.70 6.30 0.224 0.248 L 0.60 0.937 0.024 0.037 ø 0° 8° 0° 8° S 0.25 0.50 0.010 0.020 b S (45°) H L ALD555 C ø Advanced Linear Devices 5 of 7 PDIP-8 PACKAGE DRAWING 8 Pin Plastic DIP Package Millimeters E E1 D S A2 A1 e b A L Dim Min Max Min Max A 3.81 5.08 0.105 0.200 A1 0.38 1.27 0.015 0.050 A2 1.27 2.03 0.050 0.080 b 0.89 1.65 0.035 0.065 b1 0.38 0.51 0.015 0.020 c 0.20 0.30 0.008 0.012 D-8 9.40 11.68 0.370 0.460 E 5.59 7.11 0.220 0.280 E1 7.62 8.26 0.300 0.325 e 2.29 2.79 0.090 0.110 e1 7.37 7.87 0.290 0.310 L 2.79 3.81 0.110 0.150 S-8 1.02 2.03 0.040 0.080 0° 15° 0° 15° ø b1 Inches c e1 ALD555 ø Advanced Linear Devices 6 of 7 CERDIP-8 PACKAGE DRAWING 8 Pin CERDIP Package E E1 Millimeters D A1 s A L L2 b b1 e L1 Dim A A1 Min Inches 3.55 Max 5.08 Min 0.140 Max 0.200 1.27 2.16 0.050 0.085 b 0.97 1.65 0.038 0.065 b1 0.36 0.58 0.014 0.023 C 0.20 0.38 0.008 0.015 D-8 -- 10.29 -- 0.405 E 5.59 7.87 0.220 0.310 E1 7.73 8.26 0.290 0.325 e 2.54 BSC 0.100 BSC e1 7.62 BSC 0.300 BSC L 3.81 5.08 0.150 0.200 L1 3.18 -- 0.125 -- L2 0.38 1.78 0.015 0.070 S -- 2.49 -- 0.098 0° 15° 0° 15° Ø C e1 ALD555 ø Advanced Linear Devices 7 of 7