mt8870dsr1-1 Zarlink Semiconductor, mt8870dsr1-1 Datasheet - Page 7

• Manufacturer Part Number: mt8870dsr1-1
• Description: Integrated Dtmf Receiver With Enhance Sensitivity
• Manufacturer: Zarlink Semiconductor

Differential Input Amplifier
C
R
R
C
C
1
1
2
R
VOLTAGE GAIN (A
INPUT IMPEDANCE
(Z
2
1
=C
=R
=60kΩ, R
Figure 6 - Differential Input Configuration
3
INDIFF
OSC1
OSC2
=
2
4
=10 nF
=R
R
R
R
R
MT8870D/MT8870D-1
2
Figure 7 - Oscillator Connection
1
5
) = 2
4
2
+R
=100 kΩ
R
R
3
5
=37.5 kΩ
5
3
X-tal
Zarlink Semiconductor Inc.
C
R
1
v
2
+
diff)=
R
IN+
IN-
2
C
ωc
1
7
R
All resistors are ±1% tolerance.
All capacitors are ±5% tolerance.
R
R
5
5
1
OSC2
OSC1
2
V
Ref
GS
MT8870D/MT8870D-1
C=30 pF
X-tal=3.579545 MHz
To OSC1 of next
MT8870D/
MT8870D-1
+
-
Data Sheet