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參數(shù)資料
| 型號： | CLC935B8C |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | ADC |
| 英文描述： | 12-bit, 15MSPS A/D Converter |
| 中文描述： | 1-CH 12-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CDIP40 |
| 封裝： | 1.100 INCH, SIDE BRAZED, CERAMIC, DIP-40 |
| 文件頁數(shù)： | 4/12頁 |
| 文件大?。?/td> | 271K |
| 代理商： | CLC935B8C |
http://www.national.com
4
Absolute Maximum Ratings*
positive supply voltage (+V
CC
)
positive supply voltage (+V
1
)
negative supply voltage (-V
EE
)
negative supply voltage (-V
1
)
differential voltage between any two GND’s
analog input voltage range
digital input voltage range
gain adjust voltage range
output short circuit duration (one pin to ground)
junction temperature
operating temperature range
CLC935-BC
CLC935-B8C
storage temperature range
lead solder duration (+300°C)
-0.5 to +7.0V
-0.5 to +18V
+0.5 to -7.0V
+0.5 to -18.0V
200mV
-V
EE
to +V
CC
+0.5V to -V
EE
-V
EE
to +V
CC
Infinite
+175°C
0°C to +70°C
-55°C to +125°C
-65°C to +150°C
10 sec
Recommended Operation Conditions
°
positive supply voltage (+V
CC
)
positive supply voltage (+V
1
)
negative supply voltage (-V
EE
)
negative supply voltage (-V
1
)
differential voltage between any two GND’s
analog input voltage range (Full Scale)
digital input voltage range
+5V ±5%
+15V ±5%
-5.2V ±5%
-15V ±5%
<10mV
±1.0V
-2.0V to 0.0V
*Note: Absolute maximum ratings are limiting values, to be applied individually,
and beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied. Exposure to
maximum ratings for extended periods may affect device reliability.
Pinout & Pin Description and Usage
DNC
DNC
(INVERTED MSB) D1
GROUND
+V
cc
, +5.0V
DNC
DNC
(MSB) D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
(LSB) D12
-V
ee
, -5.2V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
OFFSET ADJUST
OFFSET REF
V
REF
OUT (+2.5V)
+15V
GAIN ADJUST
-15V
-V
ee
, -5.2V
GROUND
DNC
DNC
-V
ee
, -5.2V
-V
cc
, +5.0V
-V
ee
, -5.2V
GROUND
SIGNAL GROUND
V
IN
SIGNAL GROUND
DATA INV.
CONVERT
CONVERT
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
ECL-Level Digital Inputs
I
CONVERT, CONVERT
(Pins 23, 24) : “Differential Convert Command” initiates a new conversion cycle on
the rising edge of CONVERT.
I
DATA INV (Pin 25): DATA INVERT is an active HIGH (grounded) ECL input which causes the data outputs
[D1 to D12] to be inverted. In normal operation, DATA INV is left floating or tied to ECL logic LOW.
ECL-Level Digital Outputs (Note: all ECL digital outputs have internal series resistances such that Z
out
= 50
±3
)
I
(MSB) D1-D12 (Pins 7 to 18): Digital Data Outputs. D1 is the MSB; D12 is the LSB. In their normal state,
the digital outputs offer Offset Binary output coding.
I
(MSB) D1
(Pin 6): Inverted version of the MSB, used for 2’s Complement coding.
Analog Input
I
V
IN
(Pin 39): Analog input with a 2.0V
pp
input range from +1.00V to -1.00V.
I
GAIN ADJUST
(Pin 33): The GAIN ADJUST has a +4V to +1V input range and scales the analog input full-
scale range by -10% to +10% respectively. If unused, Gain Adjust should be left floating.
Miscellaneous
I
V
REF
(+2.5V) (Pin 35): V
REF
is a highly stable +2.500V voltage reference. (Recommended current drain
≤
2mA.)
I
D.N.C
(Pins 4, 5, 19, 20, 28, 29): Do Not Connect.
I
OFFSET ADJUST
(Pin 36): OFFSET ADJUST has a GROUND to OFFSET REFERENCE input range
and scales the analog input offset by ò0.1V. If unused, OFFSET ADJUST should be left floating.
I
OFFSET REFERENCE
(Pin 37): OFFSET REFERENCE tracks gain adjustments and is used for offset
voltage adjustment.
Power and Ground
I
+5V
, Pins 2,26;
+15V
, Pin 34;
-5.2V
, Pins 3, 22, 27, 31;
-15V
, Pin 32;
GROUND
, Pins 1, 21, 30, 38, 40.
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