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參數(shù)資料
| 型號： | MAX192 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power, 8-Channel,Serial 10-Bit ADC(8通道,133ksps串行10位A/D轉(zhuǎn)換器) |
| 中文描述： | 低功耗、8通道、串行10位ADC |
| 文件頁數(shù)： | 20/24頁 |
| 文件大?。?/td> | 211K |
| 代理商： | MAX192 |
M
Low-Power, 8-Channel,
S erial 10-Bit ADC
20
______________________________________________________________________________________
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
MAX192
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
AGND
SHDN
V
DD
SCLK
CS
DIN
SSTRB
DOUT
DGND
AGND
REFADJ
VREF
V
DDI
, V
DDE
, V
DDSYN
, V
STBY
SCK
PCS0
MOSI
MISO
* CLOCK CONNECTIONS NOT SHOWN
V
SSI
V
SSE
MC68HC16
0.1μF
4.7μF
0.01μF
0.1μF
4.7μF
ANALOG
INPUTS
+5V
+
Figure 19. MAX192 QSPI Connection
TMS320 to MAX192 Interface
Figure 22 shows an application circuit to interface the
MAX192 to the TMS320 in external clock mode. The
timing diagram for this interface circuit is shown in
Figure 23.
Use the following steps to initiate a conversion in the
MAX192 and to read the results:
1)
The TMS320 should be configured with CLKX
(transmit clock) as an active-high output clock and
CLKR (TMS320 receive clock) as an active-high
input clock. CLKX and CLKR of the TMS320 are
tied together with the SCLK input of the MAX192.
2)
of the TMS320 to enable data to be clocked into
DIN of the MAX192.
3)
An 8-bit word (1XXXXX11) should be written to the
The MAX192–—is driven low by the XF_ I/O port
MAX192 to initiate a conversion and place the
device into external clock mode. Refer to Table 3
to select the proper XXXXX bit values for your spe-
cific application.
The SSTRB output of the MAX192 is monitored via
the FSR input of the TMS320. A falling edge on
the SSTRB output indicates that the conversion is
in progress and data is ready to be received from
the MAX192.
The TMS320 reads in one data bit on each of the
next 16 rising edges of SCLK. These data bits
represent the 10-bit conversion result and two
sub-LSBs, followed by four trailing bits, which
should be ignored.
Pull–—high to disable the MAX192 until the next
conversion is initiated.
4)
5)
6)
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