FX806A 查看數據表（PDF） - CML Microsystems Plc
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FX806A Datasheet PDF : 13 Pages
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Analogue Application Information
External Components
VDD
C9
R6
XTAL
1
24
SEE INSET 2 XTAL/CLOCK
2
23
SERIAL CLOCK
3
22
COMMAND DATA
4
21
CHIP SELECT
FX806A J 5
20
VOGAD OUT
6
19
RX AUDIO IN
7
C12
VOGAD IN
18
8
17
R5
VBIAS
9
16
MIC. IN (+)
10
15
MIC. IN (-)
11
14
VSS
12
13
VDD
MODULATION 2 DRIVE
MODULATION 1 DRIVE
AUDIO OUT
MOD IN
C11
VSS
EXTERNAL SIGNAL
AND
DATA INPUTS
SUM OUT
SUM IN
MAIN
PROCESSOUT
R9
R8
R7
R10
CALIBRATION IN
EXTERNAL AUDIO PROCESS
R11
PROCESSED AUDIO IN C13
MIC. OUT
SEE INSET 1
R12
C8
C10
VSS
C4
MIC. IN (+)
C 2 R2
C1
MIC. IN (-) R 1
C5
R4
VSS
VBIAS
10 +
13
11 -
FX806A J
R3
C3
MIC. OUT
INSET 1
Fig.2 Recommended External Components
XTAL
1
FX806A J
X1
2
XTAL/CLOCK
C6
C7
VSS
INSET 2
Component
R=
1
R2
R
3
R
4
R
5
R
6
R7
R
8
R
9
Value
10.0kΩ
10.0kΩ
20.0kΩ
20.0kΩ
10.0kΩ
2.2MΩ
100kΩ
100kΩ
100kΩ
R=
10
R
11
R12
C1
C
2
C
3
C
4
C5
C6
Notes
To demonstrate the versatility of the Mic. inputs, Input
Op-Amp gain/attenuation components for a voltage gain of
6.0dB are shown (INSET 1) in a differential configuration.
Components for a single (+ or -) input may be employed.
Resistor values R7 to R11 (summation components) are
dependant upon application and configuration requirements.
100kΩ
100kΩ
2.2MΩ
470nF
470nF
270pF
270pF
0.1µF
33pF
C=
7
C
8
C
9
C
10
C11
C12
C
13
X
13
5 – 65pF
1.0µF
1.0µF
1.0µF
22pF
100nF
10.0nF
4.0MHz
Tolerance: R = ±10%. C = ± 20%
Xtal circuit capacitors C6 (CD) and C7 (CG) shown (INSET
2) are recommended in accordance with CML Application
Note D/XT/2 December 1991. Circuit drive and drain resistors
are incorporated on-chip.
Operation of any CML microcircuit without a Xtal or clock
input may cause device damage. To minimise damage in the
event of a Xtal/drive failure, it is recommended that the power
rail (V ) is fitted with a current limiting device (resistor or fast
DD
reaction fuse).
VOGAD Components Calculations – Figures 2 and 3
Provided R5 >>1.0kΩ and R6 = R12 >>R5
Then:
Attack Time (T ) = R x C
A
5
8
Decay Time (T ) = R x C
D
6
8
2
4
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