參數(shù)資料
型號(hào)： MT88E45
廠商： Mitel Networks Corporation
英文描述： 4-Wire Calling Number Identification Circuit(4線主叫識(shí)別電路（接收傳送的物理層信號(hào)）)
中文描述： 4線主叫號(hào)碼識(shí)別電路（四線主叫識(shí)別電路（接收傳送的物理層信號(hào)））
文件頁(yè)數(shù)： 13/27頁(yè)
文件大?。?/td> 113K
代理商： MT88E45
Advance Information
MT88E45
13
Figure 8 - Gain Ratio as a Function of Nominal Vdd
Gain Setting Resistor Calculation Example for Figure 8:
For the desired nominal Vdd, use Figure 8 to determine approximate A
v
.
For the GS1 op-amp, start with the 0dB gain setting resistor values of R5
0dB
, R6
0dB
and R7
0dB
. In
Figure 7 these values are 53K7, 60K4 and 464K respectively. Keep C1,C2,R1,R2,R3,R4 as in Figure 7
to maintain the highpass corner frequency constant for all gain settings.
For the desired gain setting of A
v
:
R7
Av
= R7
0dB
x A
V
Scaled for desired gain. Choose
the closest standard resistor value as R7
Av
.
Actual A
v
from now on is R7
Av
/R7
0db
R5
Av
= R5
0dB
x A
V
Scaled for good common mode range. Choose
the closest standard resistor value as R5
Av
.
1/R6
Av
= 1/R5
Av
- 1/R7
Av
Calculate R6
Av
so that R5
Av
=R6
Av
|| R7
Av
. Choose
the closest standard resistor value as R6
Av
.
Repeat for R
10
, R
11
, R
12
for the GS2 op-amp.
Example:
For a gain of -3.5dB, A
v
=10
-3.5/20
= 0.668
R7
-3.5dB
= 464K x 0.668 = 309K9, the closest standard resistor value is 309K.
A
v
is now 309K/464K = 0.666
R5
-3.5dB
= 53K6 x 0.666 = 35K7, the closest standard resistor value is 35K7.
Therefore R6
-3.5dB
is calculated to be 40K4, the closest standard resistor value is 40K2.
3.0
3.5
4.0
4.5
5.0
Nominal Vdd (Volts)
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
G
0.668
0.531
0.794
Gain ratio for
Bellcore GS1, GS2
ETSI GS2 op amps
Gain ratio for ETSI
GS1 op amp
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT88E45AS 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:4-Wire Calling Number Identification Circuit 2(4-Wire CNIC2)
MT88E45B 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4-Wire Calling Number Identification Circuit 2 (4-Wire CNIC2)
MT88E45BN 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4-Wire Calling Number Identification Circuit 2
MT88E45BN1 制造商:Microsemi Corporation 功能描述:CALLER ID CMOS 3.58MHZ 3.3V 20SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC CNIC CIDCW CID 20SSOP 制造商:Microsemi Corporation 功能描述:IC CNIC CIDCW CID 20SSOP
MT88E45BNR 制造商:Microsemi Corporation 功能描述:CALLER ID CMOS 3.58MHZ 3.3V 20SSOP - Tape and Reel
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