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參數(shù)資料
| 型號： | 935084920118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELEPHONE SPEECH CKT, PDSO20 |
| 封裝： | PLASTIC, SOT-163, SO-20 |
| 文件頁數(shù)： | 12/38頁 |
| 文件大?。?/td> | 303K |
| 代理商： | 935084920118 |
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March 1994
2
Philips Semiconductors
Product specication
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
TEA1064A
GENERAL DESCRIPTION
The TEA1064A is a bipolar integrated circuit that performs
all the speech and line interface functions required in fully
electronic telephone sets. It performs electronic switching
between dialling and speech and has a powerful DC
supply for peripheral circuits. The IC operates at line
voltages down to 1.8 V DC (with reduced performance) to
facilitate the use of more telephone sets connected in
parallel. The transmit signal on the line is dynamically
limited (speech-controlled) to prevent distortion at high
transmit levels of both the sending signal and the sidetone.
FEATURES
Low DC line voltage; operates down to 1.8 V (excluding
polarity guard)
Voltage regulator with low voltage drop and adjustable
static resistance
DC line voltage adjustment facility
Provides a supply for external circuits in two options:
unregulated supply, regulated line voltage;
stabilized supply, line voltage varies with supply
current
Dynamic limiting (speech-controlled) in transmit
direction prevents distortion of line signal and sidetone
Symmetrical high-impedance inputs (64 k) for
dynamic, magnetic or piezo-electric microphones
Asymmetrical high-impedance input (32 k) for electret
microphones
DTMF signal input
Confidence tone in the earpiece during DTMF dialling
Mute input for disabling speech during pulse or DTMF
dialling
Power-down input for improved performance during
pulse dial or register recall (flash)
Receiving amplifier for magnetic, dynamic or
piezo-electric earpieces
Large amplification setting ranges on microphone and
earpiece amplifiers
Line loss compensation (line current dependent) for
microphone and earpiece amplifiers (not used for DTMF
amplifier)
Gain control curve adaptable to exchange supply
Automatic disabling of the DTMF amplifier in
extremely-low voltage conditions
Microphone MUTE function available with switch
PACKAGE OUTLINES
Notes
1. SOT146-1; 1998 Jun 18.
2. SOT163-1; 1998 Jun 18.
TEA1064A :20-lead DIL; plastic (SOT146).(1)
TEA1064AT:20-lead mini-pack; plastic (SO20;
SOT163A).(2)
相關PDF資料 |
PDF描述 |
|---|---|
| 935084930112 | TELEPHONE SPEECH CKT, PDIP20 |
| 0672.400 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; Number of Contacts:55; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight |
| 0672.500 | Circular Connector; No. of Contacts:61; Series:; Body Material:Aluminum; Connecting Termination:Solder; Connector Shell Size:24; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:24-61 |
| 935085450112 | F/FAST SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14 |
| 935007650118 | F/FAST SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 935087-000 | 制造商:TE Connectivity 功能描述:301A511-51-05/164-0 - Bulk |
| 935087N001 | 制造商:TE Connectivity 功能描述:301A511-51-05/164-CS7092 制造商:TE Connectivity 功能描述:301A511-51-05/164-CS7092 - Bulk |
| 9350DC-200-0GZZZA | 制造商:Siemens 功能描述: |
| 9350DC-200-0ZZZTA | 制造商:Siemens 功能描述: |
| 9350DC-200-0ZZZZA | 制造商:Siemens 功能描述: |
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