TP5088N. ,TP5088 DTMF Generator for Binary DataTP5088DTMFGeneratorforBinaryDataOctober1991TP5088DTMFGeneratorforBinaryDataGeneralDescription
TP5088WM ,TP5088 DTMF Generator for Binary DataTP5088DTMFGeneratorforBinaryDataOctober1991TP5088DTMFGeneratorforBinaryDataGeneralDescription
TP5089N ,TP5089 DTMF (TOUCH-TONE) GeneratorTP5089DTMF(TOUCH-TONE)GeneratorDecember1991TP5089DTMF(TOUCH-TONE)GeneratorGeneralDescription
TP5116AJ ,7 V, monolithic CODECFunctional Description
Approximately 4 its after the rising edge of the XMIT SYNC
pulse, the vo ..
TP5116AJ ,7 V, monolithic CODECBlock Diagram
"
I SAMPLE AND “ I
ANALOG MPOT HOLD A/D SAR LOGIC DIGITAL OUTPUT
COMPARATOR ..
TP5116AJ ,7 V, monolithic CODECFeatures
The TP5116A and TP5156A are monolithic PCM CODECs TP5116A--wlaw coding (sign plus magni ..
TQM3M7001 , 802.11a/b/g Low Noise Amplifier Module
TQM3M7001 , 802.11a/b/g Low Noise Amplifier Module
TQM613025 , CDMA Cellular Band PA/Duplexer Module
TQM613025 , CDMA Cellular Band PA/Duplexer Module
TQM616025 , WCDMA / HSUPA Band V/VI Tritium III PA Duplexer Module™
TQM640002 , GPS LNA-Filter Receive Module
TP5088N-TP5088N.
TP5088 DTMF Generator for Binary Data
TL/H/5004
TP5088
DTMF
Generator
for
Binary
Data
October 1991
TP5088 DTMF Generator for Binary Data
General Description
This CMOS device provideslow cost tone-dialing capability microprocessor-controlled telephone applications. 4-bit
binary datais decoded directly, withoutthe needfor conver-
sionto simulated keyboard inputs requiredby standard
DTMF generators. Withthe TONE ENABLE input low,the
oscillatoris inhibitedandthe deviceisinalow poweridle
mode.Onthe low-to-high transitionof TONE ENABLE, data latchedintothe deviceandthe selected tonepair from
the standard DTMF frequenciesis generated.An open-drain
N-channel transistor providesa MUTE output during tone
generation.
Features Direct microprocessor interface Binary data inputs with latches Generates16 standard tone pairs On-chip 3.579545 MHz crystal-controlled oscillator Better than 0.64% frequency accuracy High group pre-emphasis Low harmonic distortion MUTE output interfacesto speech network Low poweridle mode 3.5V–8V operation
Block Diagram
TL/H/5004–1
*Crystal Specification: Parallel Resonant 3.579545 MHz,RSs 150X,Le100 mH,C0e5pF,C1e0.02pF.
C1995National SemiconductorCorporation RRD-B30M115/PrintedinU.S.A.
