參數(shù)資料
型號： ADC12L032
廠商： National Semiconductor Corporation
元件分類： 串行ADC
英文描述： 3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold(可自行校對3.3V12位串行輸入/輸出帶MUX，采樣/保持功能A/D轉(zhuǎn)換器)
中文描述： 3.3自校準12位帶符號串行I /辦公自動化/ D轉(zhuǎn)換器MUX和采樣/保持（可自行校對3.3V12位串行輸入/輸出帶復用，采樣/保持功能的A / D轉(zhuǎn)換器）
文件頁數(shù)： 7/36頁
文件大?。?/td> 819K
代理商： ADC12L032
Converter Electrical Characteristics
(Continued)
The following specifications apply for V
+
= V
+ = V
+ = +3.3 V
, V
REF
+ = +2.500 V
, V
= 0 V
, 12-bit + sign conver-
sion mode, f
CK
= f
SK
= 5 MHz, R
S
= 25
, source impedance for V
REF
REF
≤
25
, fully-differential input with fixed
1.250V common-mode voltage, and 10(t
CK
) acquisition time unless otherwise specified.
Boldface limits apply for T
A
= T
J
=
T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25C. (Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limits)
REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS
On Channel Leakage (Note 16)
CH0–CH7 and COM Pins
On Channel = 3.3V and
Off Channel = 0V
On Channel = 0V and
Off Channel = 3.3V
V
MUXOUT
= 3.3V or
V
MUXOUT
= 0V
V
IN
= 1.65V and
V
MUXOUT
= 1.55V
V
IN
= 1.65V and
V
MUXOUT
= 1.55V
V
IN
= 3.3 V
PP
, f
IN
= 40 kHz
0.01
0.3
μA (max)
0.01
0.3
μA (min)
MUXOUT1 and MUXOUT2
Leakage Current
MUX On Resistance
0.01
0.3
μA (max)
R
ON
1300
1900
(max)
R
ON
Matching Channel to Channel
5
%
Channel to Channel Crosstalk
MUX Bandwidth
72
90
dB
kHz
DC and Logic Electrical Characteristics
The following specifications apply for V
+
= V
+ = V
+ = +3.3 V
, V
REF
+ = +2.500 V
, V
= 0 V
, 12-bit + sign conver-
sion mode, f
= f
= 5 MHz, R
= 25
, source impedance for V
≤
25
, fully-differential input with fixed
1.250V common-mode voltage, and 10(t
) acquisition time unless otherwise specified.
Boldface limits apply for T
A
= T
J
=
T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25C. (Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limits)
CCLK, CS, CONV, DI, PD AND SCLK INPUT CHARACTERISTICS
V
IN(1)
Logical “1” Input Voltage
V
IN(0)
Logical “0” Input Voltage
I
IN(1)
Logical “1” Input Current
I
IN(0)
Logical “0” Input Current
DO, EOC AND DOR DIGITAL OUTPUT CHARACTERISTICS
V
OUT(1)
Logical “1” Output Voltage
V
+
= 3.6V
V
+
= 3.0V
V
IN
= 3.3V
V
IN
= 0V
2.0
0.8
1.0
1.0
V (min)
V (max)
μA (max)
μA (min)
0.005
0.005
V
+
= 3.0V, I
OUT
= 360 μA
V
+
= 3.0V, I
OUT
= 10 μA
V
+
= 3.0V, I
OUT
= 1.6 mA
V
OUT
= 0V
V
OUT
= 3.3V
V
OUT
= 0V
V
OUT
= V
D
+
2.4
2.9
0.4
3.0
3.0
6.5
8.0
V (min)
V (min)
V (max)
μA (max)
μA (max)
mA (min)
mA (min)
V
OUT(0)
I
OUT
Logical “0” Output Voltage
TRI-STATE Output Current
0.1
0.1
14
16
+I
SC
I
SC
POWER SUPPLY CHARACTERISTICS
I
D
+
Digital Supply Current
Output Short Circuit Source Current
Output Short Circuit Sink Current
Awake
CS = HIGH, Powered Down, CCLK on
CS = HIGH, Powered Down, CCLK off
Awake
CS = HIGH, Powered Down, CCLK on
CS = HIGH, Powered Down, CCLK off
Awake
CS = HIGH, Powered Down
1.1
600
12
2.2
10
0.1
70
0.1
1.5
mA (max)
μA
μA
mA (max)
μA
μA
μA
μA
I
A
+
Positive Analog Supply Current
3.0
I
REF
Reference Input Current
A
www.national.com
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