參數(shù)資料
型號: ADC08034
廠商: National Semiconductor Corporation
元件分類: 串行ADC
英文描述: 8-Bit High-Speed Serial I/O A/D Converters with Multiplexer Options, Voltage Reference, and Track/Hold Function(8位高速串行輸入/輸出A/D轉(zhuǎn)換器帶多路選擇,電壓基準(zhǔn)和跟蹤/保持功能)
中文描述: 8位高速串行I /辦公自動化/ D的多路復(fù)用器選項(xiàng),電壓參考,并跟蹤轉(zhuǎn)換器/保持功能(8位高速串行輸入/輸出的A / D轉(zhuǎn)換器帶多路選擇,電壓基準(zhǔn)和跟蹤/保持功能)
文件頁數(shù): 4/24頁
文件大?。?/td> 552K
代理商: ADC08034
Electrical Characteristics
(Continued)
The following specifications apply for V
= V
= +5 V
DC
, and f
CLK
= 1 MHz unless otherwise specified.
Boldface limits
apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C.
Symbol
Parameter
Conditions
Typical
(Note 8)
Limits
(Note 9)
Units
(Limits)
DIGITAL AND DC CHARACTERISTICS
I
OUT
TRI-STATE
Output Current
V
OUT
= 0V
V
OUT
= 5V
V
OUT
= 0V
V
OUT
= V
CC
3.0
3.0
6.5
8.0
μA (max)
μA (max)
mA (min)
mA (min)
I
SOURCE
I
SINK
I
CC
Output Source Current
Output Sink Current
Supply Current
ADC08031, ADC08034,
and ADC08038
ADC08032 (Note 16)
CS = HIGH
3.0
mA (max)
7.0
mA (max)
REFERENCE CHARACTERISTICS
V
REF
OUT
Nominal Reference Output
V
REF
OUT Option
Available Only on
ADC08034 and
ADC08038
2.6
V
Electrical Characteristics
The following specifications apply for V
= V
= +5 V
DC
, and t
r
= t
f
= 20 ns unless otherwise specified.
Boldface limits
apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C.
Symbol
Parameter
Conditions
Typical
(Note 8)
10
Limits
(Note 9)
Units
(Limits)
kHz (min)
MHz (max)
% (min)
% (max)
1/f
CLK
(max)
μs (max)
1/f
CLK
(max)
ns
ns (min)
f
CLK
Clock Frequency
1
Clock Duty Cycle
(Note 14)
Conversion Time (Not Including
MUX Addressing Time)
Acquisition Time
CLK High while CS is High
CS Falling Edge or Data Input
Valid to CLK Rising Edge
Data Input Valid after CLK
Rising Edge
CLK Falling Edge to Output
Data Valid (Note 15)
40
60
8
8
T
C
f
CLK
= 1 MHz
t
CA
t
SELECT
t
SET-UP
1
2
50
25
t
HOLD
20
ns (min)
t
pd1
, t
pd0
C
L
= 100 pF:
Data MSB First
Data LSB First
C
L
= 10 pF, R
L
= 10 k
(see TRI-STATE Test Circuits)
C
L
= 100 pF, R
L
= 2 k
250
200
ns (max)
ns (max)
ns
t
1H
, t
0H
TRI-STATE Delay from Rising Edge
of CS to Data Output and SARS Hi-Z
50
180
ns (max)
pF
pF
C
IN
C
OUT
Capacitance of Logic Inputs
Capacitance of Logic Outputs
5
5
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2:
Operating Ratings indicate conditions for which the device is functional. These ratings do not guarantee specific performance limits. For guaranteed speci-
fications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance character-
istics may degrade when the device is not operated under the listed test conditions.
Note 3:
All voltages are measured with respect to AGND = DGND = 0 V
DC
, unless otherwise specified.
Note 4:
When the input voltage V
IN
at any pin exceeds the power supplies (V
IN
<
(AGND or DGND) or V
IN
>
V
CC
) the current at that pin should be limited to 5 mA.
The 20 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5 mA to four pins.
Note 5:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
and the ambient temperature, T
A
. The maximum
allowable power dissipation at any temperature is P
D
= (T
JMAX
T
A
)/
θ
JA
or the number given in the Absolute Maximum Ratings, whichever is lower. For these de-
A
www.national.com
4
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