兆通科技有限公司TL2272-96 TL2272-96 38 Decoder with One-key Selection Doorbell
GENERAL DESCRIPTION
The main application area for the TL2272-96 device is for remote control doorbells working together with TL2262. Containing all the functions of the TL2272 decoder and melody generator, the device eliminates the need for customers to incorporate an external op-amp and melody generator IC within their product applications, in the process significantly reducing overall product costs. In addition to being fully compatible with the TL2272 circuitry, the device includes the following features; Internal 2 channel tone generator and current type audio output.
FEATURES
1. Operating voltage:
2.4V~5.0V
decoder2. 2 channel dual tone generator
3. On chip RC oscillator
4. Current type D/A output
5. TL2262 encoder pair with
6. Provided one-key sequential selection audio output
7. Tone optional :
1. Ding-Dong Ding-Dong
2. Ding-Ding Ding-Ding
3. Westminster Tunes
4. For Alice
8. 16-pin DIP package
BLOCK DIAGRAM
PIN DESCRIPTION
Pin No. Pin Name I/O Description 1~8 A0~A7 I Address pin 9 VSS - Negative power supply 10 MOD I Sequential selection audio output 11 N.C. - No connect 12 TEST I Test pin 13 AUD O Audio output
14 SI I Serial data input 15 OSC1 I Oscillator input pin 16 OSC2 O Oscillator output pin 17 TEST1 I Test pin 18 VDD - Positive power supply
DC CHARACTERICS
VDD=4.5V, Fosc=80KHz, T A =25 O C (unless otherwise noted.). Symbol Parameter Min. Typ. Max. Unit Remark V DD Operating voltage 2.4 - 5 V I STB Standby current - 2 - uA Oscillator stop, @V DD =4.5V I DD Operating current - 0.3 1 mA No load , @V DD =4.5V I AUD AUD output current 3 5 - mA V IH High input voltage 3.5 - 5 V V IL Low input voltage 0 - 1 V F OSC Oscillator frequency - 80 - KHz External Rosc 270K Ω T emp. Operating temperature 0 25 60 O C
16 15 14 13 12 11 10 9
8
7
6
5
4
3
2 1
TL2272-96 A6A2A1A5A4A3A0A7VSS VDD OSC1 OSC2 TEST AUD SI TEST1 17 18 MOD N.C.
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