 |
전자부품 데이터시트 검색엔진 |
|
|
전자부품 데이터시트 검색엔진 |
|
TEA1099H 데이터시트(PDF) 9 Page - NXP Semiconductors |
|
||||||||||||||||||||||||||||||
TEA1099H 데이터시트(HTML) 9 Page - NXP Semiconductors |
|
|
9 / 40 page  1999 Apr 08 9 Philips Semiconductors Product specification Speech and handsfree IC with auxiliary inputs/outputs and analog multiplexer TEA1099H Fig.5 Current consumption on VDD. handbook, full pagewidth 1.0 IDD (pA) 1.5 2.5 3.0 VDD (V) 2.0 108 107 106 105 104 103 102 10 FCA050 SUPPLY FOR MICROPHONE (PINS MICS AND GNDTX) The MICS output can be used as a supply for electret microphones. Its voltage is equal to 2.0 V; it can source current up to 1 mA and has an output impedance equal to 200 Ω. LOW VOLTAGE BEHAVIOUR For line currents below 9 mA, the reference voltage is automatically adjusted to a lower value; the VBB voltage follows the SLPE voltage with 250 mV difference. The excess current available for other purposes than DC biasing of the IC becomes small. In this low voltage area, the IC has limited performances. When the VBB voltage reaches 2.7 V, the VBB detector of the receive dynamic limiter on LSAO acts and discharges the DLC capacitor. The loudspeaker is then automatically disabled below this DC voltage. When VBB becomes lower than 2.5 V, the TEA1099H is forced into a low voltage mode whatever the levels on the logic inputs are. It is a speech mode with reduced performances only enabling the microphone channel (between the MIC inputs and LN) and the earpiece amplifier. These two channels are able to deliver signals for line currents as small as 3 mA. The HFC input is tied to GND sinking a current typically equal to 300 µA. POWER-DOWN MODE (PINS PD AND AUXC) To reduce current consumption during dialling or register recall (flash), the TEA1099H is provided with a power-down input (PD). When the voltage on both pins PD and AUXC is LOW, the current consumption from VBB and VDD is reduced to 460 µA typically. Therefore a capacitor of 470 µF on VBB is sufficient to power the TEA1099H during pulse dialling or flash. The PD input has a pull-up structure, while AUXC has a pull-down structure. In this mode, the capacitor CREG is internally disconnected. RINGER MODE (PINS ESI, VBB, AUXC AND PD) The TEA1099H is designed to be activated during the ringing phase. The loudspeaker amplifier can be used for the ringing signal. The IC must be powered by an external supply on ESI, while applying a HIGH level on the logic input AUXC and a LOW level on PD input. Only the HFRX input and the LSAO output are activated, in order to limit the current consumption. Some dynamic limitation is provided to prevent the LSAO output from saturation and VBB from being discharged below 2.7 V. |
유사한 부품 번호 - TEA1099H |
|
유사한 설명 - TEA1099H |
|
|
링크 URL |
| 개인정보취급방침 |
| ALLDATASHEET.CO.KR |
| ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Korean ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
