- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄24814 > 935264471518 (NXP SEMICONDUCTORS) TELEPHONE SPEECH CKT, PQFP44 PDF資料下載
參數(shù)資料
| 型號： | 935264471518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELEPHONE SPEECH CKT, PQFP44 |
| 封裝： | PLASTIC, SOT-307, QFP-44 |
| 文件頁數(shù)： | 2/39頁 |
| 文件大?。?/td> | 205K |
| 代理商： | 935264471518 |
第1頁當前第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁
1999 Apr 08
10
Philips Semiconductors
Product specication
Speech and loudspeaker amplier IC with
auxiliary inputs/outputs and analog multiplexer
TEA1097
Fig.6 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 an electret
microphone. Its voltage is equal to 2 V; it can source
current up to 1 mA and has an output impedance equal to
200
.
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 pin LSAO acts continuously,
discharging the capacitor at pin DLC. In the DC condition,
the loudspeaker is automatically disabled below this
voltage.
When VBB becomes lower than 2.5 V, the TEA1097 is
forced in 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 equal to 300
A (typ.).
POWER-DOWN MODE (PINS PD AND AUXC)
To reduce current consumption during dialling or register
recall (flash), the TEA1097 is provided with a power-down
input (PD). When the voltage on pins PD and AUXC is
LOW, the current consumption from VBB and VDD is
reduced to 460
A (typ.). Therefore a capacitor of 470 F
connected to pin VBB is sufficient to power the TEA1097
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.
相關PDF資料 |
PDF描述 |
|---|---|
| 935264471557 | TELEPHONE SPEECH CKT, PQFP44 |
| 935264477112 | TELEPHONE SPEECH CKT, PDSO40 |
| 935264477118 | TELEPHONE SPEECH CKT, PDSO40 |
| 08-350000-11-RC | SOCKET ADAPTR SOIC/8PIN .300 DIP |
| 08-3518-00 | PRAEZISIONSSOCKEL S518 8POL |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935267356112 | 制造商:NXP Semiconductors 功能描述:IC TEA1507PN |
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
| 935269544557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY TDA9587-2US1-V1.3 |
發(fā)布緊急采購，3分鐘左右您將得到回復。