MT8889CN Zarlink Semiconductor, Inc., MT8889CN Datasheet - Page 16
MT8889CN
Manufacturer Part Number
MT8889CN
Description
Integrated DTMF Transceiver with Adaptive Micro Interface
Manufacturer
Zarlink Semiconductor, Inc.
Datasheet
1.MT8889CN.pdf
(29 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MT8889CN
Manufacturer:
ZARLINK
Quantity:
20 000
Notes:
R1, R2 = 100 k 1%
R3 = 374 k 1%
R4 = 3.3 k 10%
R5 = 4.7 M 10%
R
C1 = 100 nF 5%
C2 = 100 nF 5%
C3 = 100 nF 10%*
C4 = 10 nF 10%
X-tal = 3.579545 MHz
DTMF/CP
INPUT
DTMF
OUTPUT
L
= 10 k
TEST POINT
130 pF
(min.)
Test load for D0-D3 pins
C1
MMD6150 (or
equivalent)
R1
C4
24 k
Figure 15 - Application Circuit (Single-Ended Input)
R5
R
X-tal
R2
5.0 VDC
2.4 k
L
MMD7000 (or
equivalent)
* Microprocessor based systems can inject undesirable noise into the supply rails.
The performance of the MT8889C can be optimized by keeping
noise on the supply rails to a minimum. The decoupling capacitor (C3) should be
connected close to the device and ground loops should be avoided.
Figure 16 - Test Circuits
Zarlink Semiconductor Inc.
MT8889C
IN+
IN-
GS
VRef
VSS
OSC1
OSC2
TONE
R/W/WR
CS
16
MT8880C
TEST POINT
IRQ/CP
DS/RD
St/GT
VDD
RS0
ESt
D3
D2
D1
D0
R3
Test load for IRQ/CP pin
C2
V
DD
R4
C3
5.0 VDC
3 k
100 pF
Data Sheet
To P
or C