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參數(shù)資料
| 型號： | LTC1272-8CCN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 3us, 250kHz Sampling A/D Converter |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-24 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大?。?/td> | 340K |
| 代理商： | LTC1272-8CCN |
17
LTC1272
U
S
A
O
PPLICATI
U
U
Compatibility with the AD7572
Figure 21 shows the simple, single 5V configuration
recommended for new designs with the LTC1272. If an
AD7572 replacement or upgrade is desired, the LTC1272
can be plugged into an AD7572 socket with minor modi-
with sample-and-hold, single supply operation and re-
duced power consumption.
The LTC1272, while consuming less power overall than
the AD7572, draws more current from the 5V supply (it
draws no power from the –15V supply). Also, a 1
μ
s
minimum time between conversions must be provided to
allow the sample-and-hold to reacquire the analog input.
Figure 22 shows that if the clock is synchronous with CS
and RD, it is only necessary to short out the 10
series
resistor and reverse the polarity of the 10
μ
F bypass
capacitor on the V
REF
pin. The –15V supply is not required
and can be removed, or, because there is no internal
connection to pin 23, it can remain unmodified. The clock
can be considered synchronous with CS and RD in cases
where the LTC1272 CLK IN signal is derived from the same
clock as the microprocessor reading the LTC1272.
10 F
IN
REF
V
AGND
D11 (MSB)
D10
D9
D8
D7
CLK IN
CLK OUT
HBEN
RD
CS
BUSY
NC
V
LTC1272
D6
D5
D4
DGND
D3/11
D2/10
D1/9
D0/8
A
DD
μ
P
CONTROL
LINES
0.1 F*
5V
8 OR 12-BIT
PARALLEL
BUS
ANALOG INPUT
(0V TO 5V)
+
10
μ
F
0.1
μ
F
*
FOR GROUNDING AND BYPASSING HINTS
SEE FIGURE 11 AND APPLICATION HINTS
SECTION
*
LTC1272 TA03
+
2.42V
V
OUTPUT
Figure 21. Single 5V Supply, 3
μ
s, 12-Bit Sampling ADC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1272-8CCS | 12-Bit, 3us, 250kHz Sampling A/D Converter |
| LTC1274CS | 12-Bit, 10mW, 100ksps ADCs with 1uA Shutdown |
| LTC1277IS | Pressure Transducer, Series 19 mm, Compensated, Pressure Range: 0 psi to 5 psi, Gage, 1/4-18 NPT, 10 Vdc excitation |
| LTC1274 | 12-Bit, 10mW, 100ksps ADCs with 1uA Shutdown |
| LTC1274IS | Replaced by TLC2933A : High Performance Phase Locked Loop 14-TSSOP -20 to 75 |
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