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參數(shù)資料
| 型號(hào)： | MT88L70 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | 3 Volt Integrated DTMF Receiver |
| 中文描述： | 3伏集成雙音多頻接收器 |
| 文件頁(yè)數(shù)： | 6/16頁(yè) |
| 文件大?。?/td> | 474K |
| 代理商： | MT88L70 |
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MT88L70
Data Sheet
6
Zarlink Semiconductor Inc.
Differential Input Configuration
The input arrangement of the MT88L70 provides a differential-input operational amplifier as well as a bias source
(V
Ref
) which is used to bias the inputs at mid-rail. Provision is made for connection of a feedback resistor to the op-
amp output (GS) for adjustment of gain. In a single-ended configuration, the input pins are connected as shown in
Figure 6 with the op-amp connected for unity gain and V
Ref
biasing the input at 1/2V
DD
. Figure 5 shows the
differential configuration, which permits the adjustment of gain with the feedback resistor R
5
.
Figure 5 - Differential Input Configuration
Crystal Oscillator
The internal clock circuit is completed with the addition of an external 3.579545 MHz crystal and is connected as
shown in Figure 6 (Single-ended Input Configuration).
C
1
R
1
C
2
R
4
IN+
IN-
R
5
R
2
R
3
GS
V
Ref
+
-
MT88L70
DIFFERNTIAL INPUT AMPLIFIER
C
1
= C
2
= 10 nF
R
1
= R
= R
= 100 k
R
2
= 60 k
, R
3
, = 37.5 k
R
3
=
R
2
+ R
5
VOLTAGE GAIN (A
V
diff) =
R5
R
2
R
5
R1
INPUT IMPEDANCE
(Z
INDIFF
) = 2
R
12
+
1
ω
C
2
All resistors are
±
1% tolerance.
All capacitors are
±
5% tolerance.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT88L70AC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:3 Volt Integrated DTMF Receiver |
| MT88L70AE | 制造商:Microsemi Corporation 功能描述: |
| MT88L70AE1 | 制造商:Microsemi Corporation 功能描述:DTMF RX 3.58MHZ CMOS 3V 18PDIP - Rail/Tube |
| MT88L70AN | 制造商:Microsemi Corporation 功能描述: |
| MT88L70AN1 | 制造商:Microsemi Corporation 功能描述:DTMF RX 3.58MHZ CMOS 3V 20SSOP - Rail/Tube 制造商:Microsemi Corporation 功能描述:IC 3V INTEGRATED DTMF RCVR |
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