參數(shù)資料
型號(hào)： ADC12048EVAL
廠商： National Semiconductor Corporation
英文描述： 12-Bit Plus Sign 216 kHz 8-Channel Sampling Analog-to-Digital Converter
中文描述： 12位帶符號(hào)216 kHz的8聲道采樣模擬到數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 6/30頁(yè)
文件大?。?/td> 635K
代理商： ADC12048EVAL
Power Supply Characteristics
(Continued)
The following specifications apply to the ADC12048 for V
+ = V
D
+ = 5V, V
REF
+ = 4.096V, V
= 0.0V, 12-bit + sign conver-
sion mode, f
= 12.0 MHz, R
= 25
, source impedance for V
+ and V
≤
1
, fully differential input with fixed 2.048V
common-mode voltage, and minimum 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
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Unit
(Limit)
I
D
+
V
D
+ Digital Supply Current
Start Command (Performing a
conversion) with SYNC configured as
an input and driven with a 214 kHz
signal. Bus width set to 13.
f
CLK
= 12.0 MHz, Reset Mode
f
CLK
= 12.0 MHz, Conversion
Start Command (Performing a
conversion) with SYNC configured as
an input and driven with a 214 kHz
signal. Bus width set to 13.
f
CLK
= 12.0 MHz, Reset Mode
f
CLK
= 12.0 MHz, Conversion
Standby Mode
f
CLK
= Stopped
f
CLK
= 12.0 MHz
850
2.45
μA
2.8
mA (max)
I
A
+
V
A
+ Analog Supply Current
2.3
2.3
mA
4.0
mA (max)
I
ST
Standby Supply Current
(I
D
+ + I
A
+)
5
15
120
μA (max)
μA (max)
100
Analog MUX Inputs Characteristics
The following specifications apply to the ADC12048 for V
+ = V
D+
= 5V, V
REF
+ = 4.096V, V
= 0.0V, 12-Bit + sign conver-
sion mode, f
= 12.0 MHz, R
= 25
, source impedance for V
+ and V
+
≤
1
, fully differential input with fixed 2.048V
common-mode voltage, and minimum 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
Symbol
Parameter
Conditions
Typical
(Note 10)
0.05
0.05
0.05
0.05
0.05
310
Limits
(Note 11)
1.0
1.0
1.0
1.0
2.0
500
Unit
(Limit)
μA (min)
μA (max)
μA (min)
μA (max)
μA (max)
(max)
I
ON
MUX ON Channel Leakage
Current
ON Channel = 5V, OFF Channel = 0V
ON Channel = 0V, OFF Channel = 5V
ON Channel = 5V, OFF Channel = 0V
ON Channel = 0V, OFF Channel = 5V
I
OFF
MUX OFF Channel Leakage
Current
I
ADCIN
R
ON
ADCIN Input Leakage Current
MUX On Resistance
MUX Channel-to-Channel R
ON
Matching
MUX Channel and COM Input
Capacitance
ADCIN Input Capacitance
C
MUXOUT
MUX Output Capacitance
V
IN
= 2.5V
V
IN
= 2.5V
±
20%
C
MUX
10
pF
C
ADC
70
20
pF
pF
Reference Inputs
The following specifications apply to the ADC12048 for V
+ = V
+ = 5V, V
+ = 4.096V, V
= 0.0V, 12-bit + sign con-
version mode, f
= 12.0 MHz, R
= 25
, source impedance for V
+ and V
≤
1
, fully differential input with fixed
2.048V common-mode voltage, and minimum 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
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Unit
(Limit)
I
REF
Reference Input Current
V
REF
+ 4.096V, V
REF
= 0V
Analog Input Signal: 1 kHz
(Note 20)
145
136
85
μA
μA
pF
80 kHz
C
REF
Reference Input
Capacitance
A
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