MT8841 Mitel, MT8841 Datasheet
MT8841
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MT8841 Summary of contents
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... Calling Number Identification Circuit MT8841AE MT8841AS MT8841AN Description The MT8841 Calling Number Identification Circuit (CNIC CMOS integrated circuit providing an interface to various calling line information delivery services that utilize 1200 baud BELL 202 or CCITT V.23 FSK voiceband data transmission schemes. The CNIC receives and demodulates the signal and outputs data into a simple 3-wire serial interface ...
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... MT8841 1 IN VRef 4 5 CAP OSC1 6 OSC2 7 VSS 8 16 PIN PLASTIC DIP/SOIC Pin Description Pin # Name IN+ Non-inverting Op-Amp (Input IN- Inverting Op-Amp (Input Gain Select (Output). Gives access to op-amp output for connection of feedback resistor Voltage Reference (Output). Nominally V ...
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... Bell 202 and/or CCITT V.23 FSK data reception is required. Input Configuration the data The input arrangement of the MT8841 provides an operational amplifier, as well as a bias source (V which is used to bias the inputs at V IN+ made for connection of a feedback resistor to the op- amp output (GS) for adjustment of gain ...
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... Maximum series resistance : 150 ohms Maximum drive level (mW e.g. CTS MP036S reduced power A number of MT8841 devices can be connected as shown in Figure 5 such that only one crystal is required. The connection between OSC2 and OSC1 can be D.C. coupled as shown, or A.C. coupled using 30pF capacitors. Alternatively, the OSC1 ...
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... Received Signal Level at 2200Hz: -36dBm to -12dBm This condition can be attained by choosing suitable values of R1 and R2. The MT8841 configured in a unity gain mode as shown in Fig. 6 meets the above level requirements. For applications requiring detection of lower FSK signal level, the input op amp may be configured to provide adequate gain ...
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... MT8841 Absolute Maximum Ratings Parameter 1 DC Power Supply Voltage Voltage on any pin 3 Current at any pin (except Storage Temperature 5 Package Power Dissipation * Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Recommended Operating Conditions Characteristics ...
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... Min Typ Max -36 12.3 275 1188 1200 1212 1188 1200 1212 2178 2200 2222 1280.5 1300 1319.5 2068.5 2100 2131.5 signal ) SNR 20 noise MT8841 Max Units Test Conditions µ 1kHz ripple CMmin IN CMmax dB MHz -0 ...
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... MT8841 AC Electrical Characteristics Characteristics 1 Power-up time PWDN OSC1 2 Power-down time 3 Input FSK to CD low delay 4 Input FSK to CD high delay CD 5 Hysteresis 6 Rate DATA 7 Input FSK to DATA delay 8 Rise time 9 Fall time DATA DCLK 10 DATA to DCLK delay 11 DCLK to DATA delay 12 Frequency ...
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... Input FSK 500ms Data (min) t IAL start stop start stop t CRD Figure 10 - Serial Data Interface Timing MT8841 Second Ringing 200ms (min IAH High (Input Idle) start stop start ...
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... MT8841 NOTES: 5-20 ...