SAB0600 SIEMENS | Alldatasheet
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Single-Tone Chime SAB 0601 Dual-Tone Chime SAB 0602 Features Bipolar IC @ Melodious sound @ Few components required @ Integrated output stage for 8 Q loudspeaker @ Standby current <1 pA an Type Ordering Code Package SISAB 0600 Q67000-H1948 P-DIP-8 cor Sm SAB 0601 Q67000-H2312 P-DIP-8 Sm SAB 0602 Q67000-H2313 P-DIP-8 @ Not for new design Single-Tone Chime SAB 0601 and Dual-Tone Chime SAB 0602 The two variants SAB 0601 and SAB 0602 were derived from type SAB 0600 by suppressing the last two tones or last tone, respectively, of the three-tone sequence. The SAB 0600 data applies correspondingly. Three-Tone Chime SAB 0600 This IC generates the tone sequence of a 3-tone chime. The sound pattern is created by three harmonically tuned frequencies which are switched in succession to a summing point and decay individually in amplitude. The tone color is adjusted by an external RC network (R,, C,, C,). An 8 Q loudspeaker can be connected directly via a 100 uF capacitor. An appropriate design of the loudspeaker housing (shaped as tube or horn) enhances the volume and tone quality and contributes to a pleasant, melodious sound. 525 8.90
Pin Configuration Pin Definitions and Functions o Pin | Symbol Function
1 E Input
VsLJ2 7, JR OTe OO SY U 2 Vs Voltage Supply of3 s[]c 3 TQ Output Sno [fs snc 4 GND Ground ae 5 NC. Not connected 6 c Oscillator
7 R Reference
8 L Compensation
Siemens Aktiengesellschaft 526
Z| []7see ZK be 64v$t1 Triggering Me ZS []}poxn []750 exe o- pa pe te i 7 | c Digital Tone Generation r, L Clock Oscillator | | | | AF Amplifier sav Summing Point Circuit | [ Jone [ poke [rons [ ]302 rf j 300 _ tf rego Siemens Aktiengeselischaft 527
Parameter _ Symbol _| min. max. Unit Supply voltage Vs 0.5 1 iv Input voltage at E Ve -05 Vs v Neg. input current at E ale ee Load resistance at Q 2 Current consumption at | start of tone sequence } refer to measurement circuit | sy 90 j ma endoftone sequence Jo Iso 36 jm Oscillator frequency at C fose kHz {due to power dissipation) Junction temperature T 150 °C Storage temperature Toto 125 °c Thermal resistance (system ~ air) [Rnsn | 120K Operating Range Oscillator frequency at C on Characteristics Vg =7 V to 10 V; T= 25°C Limit Values Parameter symbot [min Twp | max | Uni Standby input current Ty <1 WA ‘Supply current with open output Tso 20 mA Max. output power at 8 Q (tone 3) Po 0.16 Ww ‘Max. output voltage at Q (tone 3) Yo pp 28 v Deviation of the max. individual amplitudes referred to tone 3 Vom +6 % Frequency variation of basic oscillator with Ry, C, = const. 4f, +5 _ % Triggering voltage at E Ve Vg vo Input current at E (Ve = 6 V) Te 7oo | pA Noise voltage immunity at E Ven op 03 vo Triggering delay at f, = 13.2 kHz to 5 ms {to varies in inverse proportion to f.) Min. value of external load resistor R, 10 KQ Max. value of external load resistor LR 100 kQ Siemens Aktiengeselischaft 528
por, lo b7OF Ig
1 R c NC |
i | ia | t 2, kc ~ ba | «Pp 35pr i | | ;, + +4 L a Storage Jaw-Type Probe ~ “Ose Lefihh maT . Toye resect Vs , E Figure 3 Integral Current Consumption in the Measurement Circuit 1 1eoomen _ are ee i & ma Me TPP oo 80 Fax Max. Permissible Limit Value | PAPAL Teg =35mA, “ Typical Run = at Y= 10Vand fc 213 2hH2 — ‘| L : > 2 3 4 5 6 7 8 9s 0 i Siemens Aktiengesellschaft 529
Typical Application Circuit J - ° de if ‘donk Ry Mo 2, at C4 aa 3), lé 2 1WOpF ms F 5 Fo fe l 89] yr eNO NC nF teense Functional Description The three frequencies ~ 660 Hz, 550 Hz, and 440 Hz - are obtained by dividing the output of a 13.2 kHz oscillator. One of these three frequencies is divided again to obtain the time base for the tone-decay process. From this time base, 4-bit D/A converters (one for each tone) generate the decay voltage with which the three tones are successively activated and, over- lapping each other, are attenuated. The basic frequency is determined by an external RC network (pins R and ©). The output stage can drive an 8 Q loudspeaker with approximately 0.16 W via 100 uF. The output voltage is of square shape. To obtain a melodious output tone as required, the higher harmonics may be reduced by shunting pin L through a suitable capacitor to ground. The output volume can be regulated here by means of a potentiometer. The circuit only draws current in the active state, and automatically switches off after the tones have decayed. The circuit is activated by a short pulse, between 1.5 V and Vg in amplitude, applied to the triggering connection E (pin 1). If the trigger voltage is still, or again, present when the tones have decayed, the three tones are repeated. The circuit is not activated when a trigger pulse on E is shorter than 2 ms (interference suppression). To prevent triggering of the circuit by cross-talk voltages, especially in case of long input lines, the noise voltage peaks should be limited to 0.3 V at the IC input. For this purpose the control line (possibly in front of a series resistor) can be shunted to ground through a suitable capacitor. Siemens Aktiengesellschaft 530
——— SAB 0602 Application for AC and DC Triggering (Figure 5) The input can alternatively be triggered with direct or alternating current. An internal diode circuit hereby short-circuits the input for negative halfwaves. The peak voltage of the positive halfwave is added to the battery voltage. A series resistor must be connected into the trigger line to limit the voltage at input E (pin 1) toa maximum value equal to Vs. The minimum input current at pin E of the SAB 0600 (pin 1) is 500 pA at 6 V. If the voltage dropoccuring at 500 pA at the series resistor R, (Figure 5) amounts to at least the AC peak voltage between A and B (Vag AC), the IC will be safe. The formula Rg min= —~ABmax amin 500 WA determines the lower limit for Rs. The upper limit for Ry is determined by the lowest trigger voltage between A and 0 (pin 4). In the application shown in Figure 5, this will be the battery voltage if the device is also to be operated independently of the bell system (triggering by short circuit of A and B). For reliable triggering, the SAB 0600 requires a current of at least 50 WA with approx. 1.5 V at pin E. Assuming this current, the voltage drop at R; must, therefore, not exceed Vs — 1.5 V. Vs min. 1-5 The formu Remax Simin t8V e formula 3 max SO aA results in the upper limit for Ra. Calculation Example for the Circuit in Figure 5 8 max. Vag ms = 25 V max. Vag = 25 Vx V2 = 35.4 V 35.4 Romina = 70.8 kQ 8 500 pA min. Vs = 6 V (The operating range of the SAB 0600 may extend to 6 V for individual components). 6V-15 Roma = ©Y—1S =90kQ Sma 50 pA In this example, a value of 82 kQ + 10% would be suitable for Ry Siemens Aktiengesellschaft 531
Circuit for SAB 0600 Application in Home Chime Installations Utilizing AC and DC Triggering; Adjustable Sound and Volume os as 1 os | : 5 I = ef se] oo i ag | os H <3 Zé as £3 2 4 Ea w So FS] < a es ge e(]g zg ss ° Ste a “ =e x eg S ENS 28 ws us NS gs = ¢ on a2 a KA els
4 OQ —
° ~o2 ° “4 ii = PCB layout information: Because of the peak currents at Vs, Q, and GND and to avoid RF oscillations, the lines should be designed in a flatspread way or as star pattern. Star points are the terminals of capacitor C,. Siemens Aktiengesellschaft 532
AmANCNCT-= ,_ SAB 0602 Further Details Regarding the Circuit in Figure 5 Since an ohmic contact between A and B causes triggering of the chime, no bell may be connected in parallel to the chime. However, paralleling several chimes does not cause any problems. {n older batteries, the higher internal resistance of the battery may cause voltage drops becoming apparent as distortions. C, serves as a buffer element expanding the service life of the battery. The trigger line connected to pin A acts - in open state - as antenna for noise pulses which could trigger the chime unintentionally. Capacitor Cz will largely suppress such interference. If there is the risk of incorrect polarity connection when changing the battery, the battery line should be protected by a diode. For the selection of components, the following recommendations are given: Capacitors: Cy: 4.7 nF/2 10 V,+ 5%; e.g. MKT Co: 100 nF/2 10 V,+ 20%; e.g. MKT C3: 100 pF/26.3 V, + 100/—10%; e.g. aluminum electrolytic Ca: 100 yF/2 10 V, + 100/—10%; e.g. aluminum electrolytic Cs, Cg: 330 nF/2 50 V, + 100/—20%; e.g. ceramic Resistors: Ry: 82 kQ/0.1 W, + 10%, carbon film resistor Ry When a fixed resistor is used, 0.1 W + 5% metal film resistor. Siemens Aktiengeselischaft §33