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參數資料
| 型號： | TLC2543MEP |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 12-BIT ANALOG-TO-DIGITAL CONVERTER WITH SERIAL CONTROL AND 11 ANALOG INPUTS |
| 中文描述： | 12位模擬數字轉換串行控制和11個模擬輸入 |
| 文件頁數： | 14/25頁 |
| 文件大?。?/td> | 364K |
| 代理商： | TLC2543MEP |
www.ti.com
Data Input
The data input is internally connected to an 8-bit serial-input address and control register. The register defines
the operation of the converter and the output data length. The host provides the data word with the MSB first.
Each data bit is clocked in on the rising edge of the I/O CLOCK sequence (see
Table 2
for the data
input-register format).
Data Input Address Bits
The four MSBs (D7–D4) of the data register address 1 of the 11 input channels, a reference-test voltage, or the
power-down mode. The address bits affect the current conversion, which is the conversion that immediately
follows the current I/O cycle. The reference voltage is nominally equal to V
ref+
– V
ref–
.
TLC2543-EP
12-BIT ANALOG-TO-DIGITAL CONVERTER
WITH SERIAL CONTROL AND 11 ANALOG INPUTS
SGLS125A–JULY 2002–REVISED NOVEMBER 2006
Table 2. Input-Register Format
INPUT DATA BYTE
ADDRESS BITS
L1
L0
LSBF
BIP
D0
(LSB)
FUNCTION SELECT
D7
D6
D5
D4
D3
D2
D1
(MSB)
Select input channel
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
AIN10
Select test voltage
(V
ref+
– V
ref–
)/2
V
ref–
V
ref+
Software power down
Output data length
8 bits
12 bits
16 bits
Output data format
MSB first
LSB first (LSBF)
Unipolar (binary)
Bipolar (BIP) 2s complement
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
1
0
1
1
1
1
0
0
1
1
0
1
0
0
1
0
1
X
(1)
1
0
1
0
1
(1)
The four MSBs (D7–D4) of the data register address one of the 11 input channels, a reference-test voltage, or the power-down mode.
The address bits affect the current conversion, which is the conversion that immediately follows the current I/O cycle. The reference
voltage is nominally equal to V
ref+
– V
ref–
.
14
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