MT8889CP Zarlink Semiconductor, Inc., MT8889CP Datasheet - Page 4

• Manufacturer Part Number: MT8889CP
• Description: DTMF Transceiver, Integrated DTMF Transceiver with Adaptive Micro Interface
• Manufacturer: Zarlink Semiconductor, Inc.

F
697
697
697
770
770
770
LOW
DIFFERENTIAL INPUT AMPLIFIER
C1 = C2 = 10 nF
R1 = R4 = R5 = 100 k
R2 = 60k , R3 = 37.5 k
R3 = (R2R5)/(R2 + R5)
VOLTAGE GAIN
(A
INPUT IMPEDANCE
(Z
VOLTAGE GAIN
(A
Table 1 - Functional Encode/Decode Table
V
IN
Figure 3 - Single-Ended Input Configuration
V
diff) = 2 R1
diff) - R5/R1
Figure 4 - Differential Input Configuration
) = R
C2
C1
C
1209
1336
1477
1209
1336
1477
F
F
HIGH
/ R
IN
R
R4
R1
2
Zarlink Semiconductor Inc.
IN
R3
+ (1/ C)
MT8889C
DIGIT
2
1
2
3
4
5
6
4
R2
R5
R
F
D
0
0
0
0
0
0
3
IN+
IN-
GS
V
IN+
IN-
GS
V
Ref
Ref
D
MT8889C
0
0
0
1
1
1
2
MT8889C
D
0
1
1
0
0
1
1
D
1
0
1
0
1
0
0
Data Sheet