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參數(shù)資料
| 型號(hào)： | TLC1549MJG |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8 |
| 封裝： | CERAMIC, DIP-8 |
| 文件頁(yè)數(shù)： | 16/19頁(yè) |
| 文件大小： | 407K |
| 代理商： | TLC1549MJG |
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TLC1549C, TLC1549I, TLC1549M
10-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL
SLAS059C – DECEMBER 1992 – REVISED MARCH 1995
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
SC
Threshold
Detector
NODE 512
REF –
REF+
ST
512
VI
To Output
Latches
1
2
4
8
16
128
256
REF+
REF –
ST
Figure 1. Simplified Model of the Successive-Approximation System
chip-select operation
The trailing edge of CS starts all modes of operation, and CS can abort a conversion sequence in any mode.
A high-to-low transition on CS within the specified time during an ongoing cycle aborts the cycle, and the device
returns to the initial state (the contents of the output data register remain at the previous conversion result). Care
should be exercised to prevent CS from being taken low close to completion of conversion because the output
data may be corrupted.
reference voltage inputs
There are two reference inputs used with the TLC1549: REF + and REF –. These voltage values establish the
upper and lower limits of the analog input to produce a full-scale and zero reading respectively. The values of
REF +, REF –, and the analog input should not exceed the positive supply or be lower than GND consistent with
the specified absolute maximum ratings. The digital output is at full scale when the input signal is equal to or
higher than REF + and at zero when the input signal is equal to or lower than REF –.
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