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參數(shù)資料
| 型號(hào)： | TEA1069N |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Versatile speech/dialler/ringer with music-on-hold |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, PDIP42 |
| 封裝： | SHRINK, PLASTIC, DIP-42 |
| 文件頁數(shù)： | 11/44頁 |
| 文件大?。?/td> | 301K |
| 代理商： | TEA1069N |
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1998 Jan 08
11
Philips Semiconductors
Product specification
Versatile speech/dialler/ringer with
music-on-hold
TEA1069; TEA1069A
Fig.8 Alternative receiver arrangements.
Pin numbers in parenthesis refer to the TEA1069H and TEA1069AH.
(1) Resistor may be connected to prevent distortion (inductive load).
(2) Resistor is required to increase the phase margin (capacitive load).
a. Dynamic earpiece.
b. Magnetic earpiece.
c. Piezoelectric earpiece.
k, full pagewidth
(1)
(2)
QR
1 (39)
23 (18)
1 (39)
23 (18)
1 (39)
23 (18)
QR
QR
MBH199
VEE
VEE
VEE
D
UAL
T
ONE
M
ULTI
-F
REQUENCY INPUT
DTMF
When the DTMF input is enabled (MUTE is LOW) dialling
tones may be sent on to the line. The voltage gain from
DTMF to LN is typically 25.5 dB (when R7 = 68 k
) and
varies with R7 in the same way as the microphone gain.
The tones can be heard in the earpiece at a low level
(confidence tone).
A
UTOMATIC
G
AIN
C
ONTROL INPUT
AGC
Automatic line loss compensation is achieved by
connecting a resistor (R6) between AGC and V
EE
.
The automatic gain control varies the gain of the
microphone amplifier and the receiving amplifier in
accordance with the DC line current.
The control range is 5.8 dB which corresponds to a line
length of 5 km for a 0.5 mm diameter twisted-pair copper
cable with a DC resistance of 176
/km and average
attenuation of 1.2 dB/km. Resistor R6 should be chosen in
accordance with the exchange supply voltage and its
feeding bridge resistance (see Fig.9 and Table 1).
The ratio of start and stop currents of the AGC curve is
independent of the value of R6. If no automatic line-loss
compensation is required the AGC pin may be left
open-circuit. The amplifiers, in this condition, will give their
maximum specified gain.
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相關(guān)代理商/技術(shù)參數(shù) |
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| TEA1081 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Supply circuit with power-down for telephone set peripherals |
| TEA1081T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Supply circuit with power-down for telephone set peripherals |
| TEA1083 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
| TEA1083A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
| TEA1083AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Call progress monitor for line powered telephone sets |
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