HT9170 Holtek, HT9170 Datasheet
HT9170
Specifications of HT9170
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HT9170 Summary of contents
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... The power-down mode and inhibit mode operations. All types of the HT9170 series use digital count- ing techniques to detect and decode all the 16 Selection Table ...
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... Block Diagram Pin Assignment December 20, 1999 HT9170 ...
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... VDD Positive power supply, 2.5V~5.5V for normal operation One-shot type data valid output, normal high, when the chip DVB O CMOS OUT receives a valid time (DTMF) signal, the DVB goes low for 10ms. Description DD Receiving data output terminals 3 HT9170 /2 December 20, 1999 ...
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... Conditions DD ¾ ¾ 2.5 ¾ ¾ 5V ¾ 5V PWDN=5V ¾ ¾ 5V ¾ 5V 4.0 ¾ = ¾ = = ¾ ¾ HT9170 Ta=25°C Max. Unit 5 5 ¾ 1.0 V ¾ ¾ V ¾ mA 0.1 ¾ mA 0.1 100 150 kW ¾ December 20, 1999 ...
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... V <(V ,V )< ¾ ¾ 5V ¾ 5V 100 Hz ¾ 5V -3V<V <3V IN ¾ 5V ¾ ¾ 5V ¾ >100kW L 5 HT9170 Max. Unit ¾ mA ¾ mA MHz ¾ -6 dBm ¾ 1 ¾ ¾ ¾ -12 ¾ dB -16 ¾ dB ¾ ±1.5 % ¾ ¾ % ¾ ...
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... No load 5 ¾ ¾ 20 ¾ 20 ¾ ¾ ¾ ¾ ¾ Figure 1. Test circuit 6 HT9170 ¾ ¾ 100 pF ¾ 3 8.5 ms ¾ ¾ ¾ ms ¾ ¾ ¾ ...
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... Functional Description Overview The HT9170 series tone decoders consist of three band pass filters and two digital decode circuits to convert a tone (DTMF) signal into digital code output. An operational amplifier is built-in to adjust the input signal (refer to Figure 2 ...
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... Timing Diagrams Figure 3. Steering timing Figure 4. Power up timing 8 December 20, 1999 HT9170 ...
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... R1 ´ C ´ GTA DD TRT Figure 5. Steering time adjustment circuits DTMF dialing matrix (c) t > GTP GTA = R1 ´ C ´ GTP DD = (R1 // R2) ´ C ´ GTA )) 9 HT9170 - TRT / TRT December 20, 1999 ...
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... ANY December 20, 1999 HT9170 ...
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... Application Circuits HT9170 December 20, 1999 ...
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... Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. 12 December 20, 1999 HT9170 ...