U2101B Relay Timer Description The U2101B monolithic integrated bipolar circuit is a versatile timer device for relay control. Because of two integrated, freely configurable operational amplifiers, it covers a very wide range of applications. Features Applications D D D D D D D D D D D Adjustable window for trigger input Enable input for triggering Adjustable noise suppression Adjustable and retriggerable tracking time Enable and block delay Two integrated operational amplifiers freely connectable * D 50 mA relay driver Motion detectors Tracking controllers Multiple timer Conditional switches Clock generators Package: DIP16, SO16 95 9738 1 16 Ra 60 kW 15 + 14 – OP 1 13 Rb 40 kW + OP 2 2 – VRef 3 –5V 4 GND 12 fosc1 RC oscillator 1 11 Timer 1 1024 Tosc1 Voltage limitation Window adjustment 5 –VS 6 Trigger window 10 On: 4 Tosc2 Voltage monitoring Restart on: 64 Tosc2 Out (On): 0.1 VRef Out (Off): 0.5 VRef 9 Enable schmitt trigger On: 0.6 VRef Noise suppression Control logic Relay driver 50 mA On / Off: 1024 Tosc2 Timer 2, 3, 4 RC oscillator 2 7 fosc2 8 Figure 1. Block diagram TELEFUNKEN Semiconductors Rev. A1, 30-May-96 1 (9) 2 (9) N 95 9737 X Vmains 230 V Load 4x BYT56 330 nF/ 400 V 390 W ~ L C2 C3 Cosc2 D1 BZX85/ C20 fosc2 24 V Relay Sensor 1 4.7 mF Rosc2 47 m F/ 35 V C1 R1 8 7 6 OP 2 Voltage limitation –5V VRef – + Rb RC oscillator 2 Relay driver –VS 5 GND 4 3 2 1 Ra Noise suppression ON: 4 T osc2 Restart ON: 64 Tosc2 Control logic Timer 1 1024 Tosc1 Voltage monitoring Timer 2, 3, 4 ON / OFF 1024 Tosc2 VRef 40 k W 60 kW – ON: 0.6 VRef Enable schmitt trigger Out (ON): 0.1 VRef Out (OFF): 0.5 VRef Trigger window Window adjustment RC oscillator 1 OP 1 + 9 10 11 12 13 14 15 16 fosc1 R2 Sensor 2 R3 Rosc1 Feedback circuit R4 Cosc1 U2101B Figure 2. Block diagram with typical circuit TELEFUNKEN Semiconductors Rev. A1, 30-May-96 U2101B Pin Description Divider 1 16 OP2OUT OP2+ 2 15 OP1+ OP2– 3 14 OP1– VRef 13 OP1OUT 4 U2101B GND 5 12 Osc1 –VS 6 11 WINA OUT 7 10 TRIG Osc2 8 9 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 EN Symbol Divider OP2+ OP2– VRef GND –VS OUT Osc2 Function Voltage divider Non-inverting input OP2 Inverting input OP2 Reference voltage –5V Ground Supply voltage Output RC oscillator 2 (noise suppression) EN Enable input TRIG Trigger input WINA Trigger window adjustment Osc1 RC oscillator 1 (tracking time) OP1OUT Output OP1 OP1– Inverting input OP1 OP1+ Non-inverting input OP1 OP2OUT Output OP2 95 9741 Supply, Pin 6 The voltage limitation in U2101B allows a simple capacitive supply which is derived from the mains voltage via a bridge rectifier (see figure 3). 95 9740 L R1 U2101B Load VRef GND –VS OUT 4 5 6 7 C1 Vmains D1 BZX85 /C20 Relay 24 V C3 C2 N Figure 3. Supply TELEFUNKEN Semiconductors Rev. A1, 30-May-96 3 (9) U2101B Capacitor C1 is calculated as follows: X C1 + 0.85 V9 V mains–V S I tot 0 where OFF Itot = IS + IRel + IX 0.5/0.1 VRef Hysteresis IS = current consumption of the IC without load IRel = relay current IX = current consumption of the external components C1 + 0.6 VRef ON 1 w VRef X C1 Figure 4. Trigger condition, Pin 9 The following applies for R1: R1 [ 101 X 94 9299 C1 V10 At Pin 4, the circuit provides a stabilized reference voltage of –5 V. 0 ON Voltage Monitoring 0.05 While the operating voltage is being built up or reduced, uncontrolled states and activation of the output stage are prevented by the internal monitoring circuit. All latches in the circuit, the divider and the control logic are reset. 0.6 VRef 0.05 ȧVRefȧ+ 0.15 ȧVRefȧ+ 0.15 V11–4 OFF V11–4 ON After the supply voltage is applied, a single operating cycle is started independently of the trigger inputs in order to immediately make the entire function visible. VRef 95 9739 Figure 5. Trigger condition, Pin 10 Trigger Inputs, Pins 9 and 10 The trigger condition for the time stage is determined by the two input Pins 9 and 10. To initiate a triggering operation, both inputs must be in the ON state, since they are equivalent and AND connected. The tracking time begins when the trigger condition finishes. The output remains in the ON state until the tracking time is over. The enable input, Pin 9, is designed as a comparator with hysteresis. The blocking threshold is switched over by the noise suppression in order to avoid faults as a result of load switching (see figure 4). The trigger input, Pin 10, is designed as a window discriminator. The window is adjusted at Pin 11. When V11 = V4, the minimum window of approximately 250 mV is set. When V11 = V5, the maximum window is approximately 1 V. The window discriminator is in the OFF state when the voltage at Pin 10 is within the window set at Pin 11 (see figure 5). If a resistor divider with a NTC resistor is connected at Pin 11, it is possible to compensate for the temperature dependence of an IR sensor, for example. This means that the range becomes temperature independent. 4 (9) Noise Suppression, Pin 8 The internal noise suppression ensures that peak noise signals at the inputs do not cause undesired triggering. Also, triggering is prevented for a certain time after the load is switched off in order to avoid any intrinsic fault. The delay times are derived from oscillator 2 at Pin 8, the frequency, fosc2, of which is calculated as follows: f osc2 + 1.6 1 R osc2 C osc2 , whereas Cosc2 should not be greater than 1mF. This gives the period duration Tosc2: T osc2 [s] + 1600 R osc2 [kW] C osc2 [mF] The enable input, Pin 9, is buffered for 1024 Tosc2 during switching on and switching off, and the input of the window discriminator at Pin 10 is buffered for 4 Tosc2 during switching on and for 64 Tosc2 in the case of switching back on. Appropriately selecting Rosc2 and Cosc2 at Pin 8 allows any delay times to be adjusted so that they can be adapted to the respective requirements. TELEFUNKEN Semiconductors Rev. A1, 30-May-96 U2101B RC Oscillator 1, Pin 12 Voltage Divider, Pin 1 The oscillator 1 with the following divider stage 1:1024 allows a very long and reproducible tracking time tt. The circuitry of Pin 12 for a certain tracking time tt can be calculated as follows: R osc1 [kW] + 1.6 t t [s] 1024 10 3 C osc1 [mF] whereas Cosc1 should not be greater than 1mF. Two freely connectable operational amplifiers, OP1 and OP2, are used to evaluate several sensor signals. The tap of a voltage divider between GND and VRef with a voltage level of 0.6 VRef is available at Pin 1. The middle of the discriminator window is also at this value. Assuming that the output of one operational amplifier is connected at the trigger input, Pin 10 (window discriminator), the dc operating point of this operational amplifier can be adjusted without additional external resistors by connecting the input to Pin 1. This value is approximately in the center of the dynamic range of the OP. Absolute Maximum Ratings Reference point Pin 5, unless otherwise specified Parameters Power supply Current t < 10 ms Reference voltage source Output current Output stage Output voltage Input currents Symbol Value Unit Pin 6 Pin 6 –IS –iS 15 60 mA mA Pin 4 IO 5 mA Pin 7 Pin 13 and 16 –VO VS to 1.8 5 V mA Input voltages Pins 1, 2, 3, 8, 9, 10, 11, 12, 14, 15 Storage temperature range Junction temperature Ambient temperature range VI Tstg Tj Tamb VRef to 0 –40 to +125 +125 –10 to +100 V °C °C °C Symbol Maximum 120 180 100 Unit "I I Thermal Resistance Junction ambient Parameters DIP 16 SO 16 on PC board SO 16 on ceramic TELEFUNKEN Semiconductors Rev. A1, 30-May-96 RthJA K/W 5 (9) U2101B Electrical Characteristics VS = –18 V, Tamb = 25_C, reference point Pin 5, unless otherwise specified Parameters Supply voltage limitation Current consumption Voltage monitoring Switch-on threshold Switch-off threshold Reference voltage Test Conditions / Pins IS = –2 mA Pin 6 Pin 6 IS = –5 mA VS=–18V, output stage OFF V3 < V2, V14 < V15 Pin 6 V3 > V2, V14 > V15 Pin 6 Pin 6 I4 = 0.1 mA Pin 4 Pin 4 I4 = 3 mA Voltage divider reference point Pin 4 Pin 1 Voltage divider resistor Ra Voltage divider resistor Rb Resistance ratio Output voltage Window discriminator reference point Pin 4 Input current V4 < V10 < V5 Pin 10 Upper threshold Pins 10 and 11 Lower threshold Pins 10 and 11 Input current window V4 < V11 < V5 Pin 11 adjustment Minimum window: V11 = V4 Pin 10 Lower threshold Upper threshold Maximum window: V11 = V5 Pin 10 Lower threshold Upper threshold Delay time Switch-on Pin 10–7 Restart-on Enable Schmitt trigger reference point Pin 4 Pin 9 Input current V4 < V9 < V5 Threshold ON Threshold OFF (off-state) Threshold OFF (on-state) Delay time Switch-on Pin 9–7 Switch-off Output stage reference point Pin 6 Saturation voltage I7 = 25 mA Pin 7 Output current V7 = V5 (t < 1 ms) Pin 7 6 (9) Symbol –VS –VS Min. 20.5 20.6 Typ. 22 22.1 –IS –IS Max. 23.5 24 Unit V 1.75 4 mA V –VSon –VSoff –VRef –VRef 13.5 5 4.75 4.55 15 6.5 5 5 16.5 7.5 5.25 5.25 Ra Rb Ra/Rb VO 45 30 1.45 1,75 60 40 1.5 2 75 50 1.55 2.25 II VTU VTL II 0.1 0.5 0.45 |VRef | + 0.15 V11 0.35 |VRef | – 0.15 V11 0.2 0.7 V kW kW – V mA mA VTL1 VTU1 1.55 1 55 2.05 1.75 1 75 2.25 1.95 1 95 2.45 V VTL2 VTU2 0.8 2.6 1 3 4 Tosc2 64 Tosc2 1.2 3.4 V 0.1 0.4 0.5 0.9 1024 tosc2 1024 tosc2 0.5 0.42 0.53 0.93 td (ON1) td (ON2) II VT1/VRef VT2/VRef VT3/VRef td (ON) td (OFF) VSat IO 0.38 0.47 0.87 s 2 50 mA – – – s V mA TELEFUNKEN Semiconductors Rev. A1, 30-May-96 U2101B Parameters Test Conditions / Pins Symbol Oscillator 1, Tosc1 reference point Pin 4 Pin 12 Input current V4 < V12 < VTU II VTU/VRef Upper threshold VTL Lower threshold II Operating current range Idis Discharge current Oscillator 2, Tosc2 reference point Pin 4 Pin 8 Input current V4 < V8 < VTU II VTU/VRef Upper threshold VTL Lower threshold II Operating current range Idis Discharge current Operational amplifier reference point Pin 4 Pins 2, 3, 14 and 15 Input current II IIO Input offset current VIO Input offset voltage dVIO/dT Temp. coefficient VIO Common-mode input VICR voltage range Output current VO = 2.5 V ±IO Pins 13 and 16 Output voltage: IO = 100 mA VOL Lower limit Pins 13 and 16 –VOU Upper limit TELEFUNKEN Semiconductors Rev. A1, 30-May-96 Min. Typ. Max. Unit 0.8 0.3 0.1 0.85 0.5 1800 mA 0.75 0.8 0.3 0.1 0.85 0.5 1800 2 5 0.75 2 5 25 2.5 2 7 0.1 75 25 7 3 1 – V mA mA mA – V mA mA nA nA mV mV/K V mA 0.9 1.6 V 7 (9) U2101B Dimensions in mm Package: DIP16 94 9128 Package: SO16 94 8875 8 (9) TELEFUNKEN Semiconductors Rev. A1, 30-May-96 U2101B Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs). The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 TELEFUNKEN Semiconductors Rev. A1, 30-May-96 9 (9)