參數(shù)資料
型號: MT8880CN-1
廠商: Mitel Networks Corporation
英文描述: ISO2-CMOS Integrated DTMFTransceiver
中文描述: ISO2 - CMOS集成DTMFTransceiver
文件頁數(shù): 11/18頁
文件大?。?/td> 312K
代理商: MT8880CN-1
ISO
2
-CMOS
MT8880C/MT8880C-1
4-43
Figure 13 - Application Circuit (Single-Ended Input)
Figure 14 - Test Circuit
IN+
IN-
GS
VRef
VSS
OSC1
OSC2
TONE
R/W
CS
VDD
St/GT
ESt
D3
D2
D1
D0
IRQ/CP
Φ
2
RS0
DTMF/CP
INPUT
DTMF
OUTPUT
C1
R1
R2
X-tal
C4
R
L
V
DD
C3
C2
R4
R3
To
μ
P
or
μ
C
Notes:
R1, R2 = 100 k
1%
R3 = 374
1%
R4 = 3.3 k
10%
R
L
= 10 k
(min.)
C1 = 100 nF 5%
C2 = 100 nF 5%
C3 = 100 nF 10%*
C4 = 10 nF 10%
X-tal = 3.579545 MHz
* Microprocessor based systems can inject undesirable noise into
the supply rails. The performance of the MT8880 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.
MT8880C/C-1
TEST POINT
MMD6150
(or equivalent)
5.0 VDC
2.4 k
24 k
130 pF
MMD7000
(or equivalent)
TEST POINT
5.0 VDC
3 k
70 pF
Test load for IRQ/CP pin
Test load for D0-D3 pins
相關(guān)PDF資料
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