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參數資料
| 型號： | MC68176 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 2-bit A/D Converter(2位A/D轉換器) |
| 中文描述： | 2位A / D轉換器（2位的A / D轉換器） |
| 文件頁數： | 22/29頁 |
| 文件大?。?/td> | 235K |
| 代理商： | MC68176 |
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Design Considerations
Application Design Considerations
Preliminary
4-4
MC68176 Technical Data Sheet
MOTOROLA
Sample Application Circuit
Figure 4-2
shows an application example of the MC68176 2-bit FLEX A/ D chip in a
FLEX pager application. The MC68176 A/ D chip will convert an analog FLEX base-
band signal into a 2-bit digital signal. The MC68176 A/ D can be controlled by a FLEX
decoder, such as the MC68175 or MC68181. The following schematic shows the
MC68176 A/ D chip in a pager application.
Note that the dc offset of the audio input signal to the FLEX A/ D must be applied to
the DC-OFFSET pin for the converter to work properly. Theoretically speaking, we
can view the DC-OFFSET pin as an internal resistance of 50 k
and a internal
capacitance of 1.6 pF in serial. So, the external resisters, r1, r2, and r3 can be as large as
600 k
, 600 k
, and 60 k
,
respectively— this will guarantee settling to an accuracy
of at least 9 bits.
Figure 4-2
An Application Example for the MC68176, FLEX A/D
10 k
10 k
1 k
IF/Demodulator
NRF3034A
Audio
18 k
r4
0.0018
V
ADD
DC-
OFFSET
V
DDD
V
ADD
SEL
ADIN
Reserved
GND
EXTS0
EXTS1
TRKINH
CON2
CON1
BW
CLOCK
FLEX A/D
MC68176
EXTS0
EXTS1
SYMCLK
S6
S5
S4
clkout
READY
MISO
SCK
MOSI
SS
RESET
FLEX chip
Decoder
MC68175
IRQ
MISO
SCK
MOSI
SS
GPIO
DSP56L811
r1
r3
Host
Microprocessor
0.1
μ
F
1.0
μ
F
V
ADD
0.1
μ
F
1.0
μ
F
V
ADD
μ
F
r2
AA1296
0.1
μ
F
相關PDF資料 |
PDF描述 |
|---|---|
| MC68177 | FLEXchip Decoder(FLEXchip譯碼器) |
| MC68181 | Roaming FLEXchip(漫游式FLEX芯片) |
| MC68306 | 32-Bit Microprocessor(32位微處理器) |
| MC68328 | DragonBall 32-Bit Microprocessor( DragonBall32位微處理器) |
| MC68331CPV16 | User’s Manual |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68181 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Advance Information ROAMING FLEX chip SIGNAL PROCESSOR |
| MC68184 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Broadband Interface Controller |
| MC68185 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MC68185 Twisted-Pair Modem(TPM) |
| MC68194 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Carrier Band Modem(CBM) |
| MC68194FJ | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Carrier Band Modem(CBM) |
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