pbl388121so ETC-unknow, pbl388121so Datasheet
pbl388121so
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pbl388121so Summary of contents
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Description The PBL 388 12 contains all the necessary circuitry, amplifiers, detectors, comparators and control functions to implement a high performance, voice-switched, ”hands-free ” function in an answering machine. The gain dynamics (attenuation between channels) is settable (25dB or 50dB) ...
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PBL 388 12 Maximum Ratings Parameter Speech switch supply current Voltage pin 1-14 Operating temperature Storage temperature Figure 2. Isolation and measurement 100 F/16V ...
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Electrical Characteristics kHz = CTR TxDet I =1.0mA unless otherwise noted. D Parameter Speech control section Terminal voltage Internal reference voltage, V Ref Frequency response for ...
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PBL 388 12 Parameter N leakage current (hold), I Det NDet N swing relative Det Ref NDet CMP (comparator) sensitivity, transmit (Tx) mode to receive (Rx) mode or vice versa CTR voltage for 25 dB dynamics, ...
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CTR 1 -Txin 2 +Txin 3 4 F2out 5 Txout TxDetin 6 TxDetout 7 NDet 8 16-pin SO Figure 4. Pin configuration. Pin Descriptions: Refer to figure 4. (16-pin SO and 18-pin DIP package) Pin Pin SO DIP Symbol Description ...
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PBL 388 12 1 CTR 5 T xout xin xin Det Figure 5. ...
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Figure 7. Transmitter channel input amplifier used to suppress ripple in the mic. supply. (CMRR 100k Figure 8. Transmitter and receiver channel rectifier characteristics. Figure 9. Relationship ...
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PBL 388 12 dB Transmit ____ gain = 40 30 VCTR= VCTR=open V CTR -60 -40 -20 Figure 11. Transmit and receive gain as a function of V Rxdet Txdet A B Full recieve level D C ...
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Transmitter channel output 1 CTR out Mic. C Figure 14. Speech switching arrangement. a ...
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PBL 388 12 PBL 388 12 I D=1mA Figure 15. Circuit supply function. Information given in this data sheet is believed to be accurate and reliable. However no responsibility is assumed for the consequences of its use ...