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LC73862 датащи(PDF) 2 Page - Sanyo Semicon Device |
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LC73862 датащи(HTML) 2 Page - Sanyo Semicon Device |
2 / 5 page AC Electrical Characteristics at Ta = 25°C ± 2°C, V DD =5 V, VSS =0 V, fOSC = 4.194304 MHz Parameter Symbol Conditions min typ max Unit Valid input signal level See notes 1, 2, 3, 5, 6 and 9. –49.5 0 dBm Positive twist accept See notes 2, 3, 4, 9 and 11. 6 dB Frequency deviation accept See notes 2, 3, 5 and 9. ±1.5% ±2 Hz Frequency deviation reject See notes 2, 3 and 5. ±3.5 % Third tone tolerance See notes 2, 3, 4, 5, 9 and 10. –16 dB Dial tone tolerance See notes 2, 3, 4, 5, 8, 9 and 10. 22 dB Noise tolerance See notes 2, 3, 4, 5, 7, 9 and 10. –12 dB Tone present detect time tDP See Timing Chart. 3 20 ms Tone absent detect time tDA See Timing Chart. 0.5 20 ms Data shift rate 1 MHz Data output delay time tPAD See Timing Chart. 100 ns Setup time delay tDL See Timing Chart. 0 ns Data hold time tDH See Timing Chart. 30 ns Oscillator frequency fOSC LC73861 4.190109 4.194304 4.198498 MHz LC73862 3.5759 3.5795 3.5831 MHz Load capacitance CXO OSCI and OSCO 30 pF Notes 1. 0dBm=1mW power when driving a 600 Ω load. 2. All 16 DTMF signal frequencies. 3. 40 ms DTMF signal period and 40 ms pause period. 4. Nominal DTMF frequency. 5. Low-frequency group and High-frequency group signal levels are the same. 6. DTMF signal frequency deviation is within ±1.5% ±2 Hz. 7. Bandwidth limited (0 to 3 kHz) Gaussian noise. 8. 350 Hz and 440 Hz dial tone frequencies. 9. Error rate of less than 1 in 10,000. 10. Referenced to the lowest frequency component of the DTMF signal. 11. Twist = High-frequency group tone level ÷ Low-frequency group tone level. Pin Assignment Pin Description Number Name I/O Description 1 INPUT I Input coupling capacitor required. Biased internally to VDD/2. 2 OSCO O An oscillating circuit is formed by connecting a 4.194304 MHz (LC73861) / 3.579545 MHz (LC73826) oscillator and a capacitor (if needed) between these pins. (To determine whether an external capacitor is needed or not, contact the manufacturer of the oscillator.) 3 OSCI I 4VSS Supply pin, normally 0 V 5 SD O Outputs 4-bit serial decoded DTMF output, least significant bit first. 6 ACK I The ACK pin is used to shift out data to the SD pin. Four pulses are needed in order to shift out the 4-bit DTMF code. The data is latched by the shift register before the rising edge of the first pulse. 7 EST O Indicates the presence of a DTMF signal when HIGH. (This pin can be monitored and after a short delay, data can be accessed by 4 pulses to ACK.) 8VDD O Supply pin, normally 4.5 V to 5.5 V Top view LC73861, LC73862 No.4431-2/5 |
Аналогичный номер детали - LC73862 |
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Аналогичное описание - LC73862 |
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