參數(shù)資料
型號(hào)： ADC12L030
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(duì)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(zhǔn)12位帶符號(hào)串行I /辦公自動(dòng)化/ D轉(zhuǎn)換器MUX和采樣/保持（可自行校對(duì)3.3V12位串行輸入/輸出帶復(fù)用，采樣/保持功能的A / D轉(zhuǎn)換器）
文件頁數(shù)： 6/36頁
文件大?。?/td> 819K
代理商： ADC12L030
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)
STATIC CONVERTER CHARACTERISTICS
TUE
Total Unadjusted Error
8-bit + sign mode
after Auto-Zero
(Notes 12, 13, 14)
±
3/4
LSB (max)
Multiplexer Channel to Channel
Matching
Power Supply Sensitivity
±
0.05
LSB
V
+
= +3.3V
±
10%
Offset Error
±
0.5
±
0.5
±
0.5
±
0.5
±
0.5
±
1
±
1.5
±
1.5
LSB (max)
LSB (max)
LSB (max)
LSB
LSB
LSB (max)
LSB (min)
+ Full-Scale Error
Full-Scale Error
+ Integral Linearity Error
Integral Linearity Error
Output Data from
“12-Bit Conversion of Offset”
(see Table 5)
Output Data from
“12-Bit Conversion of Full-Scale”
(see Table 5)
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
(Note 20)
+10
10
(Note 20)
4095
4093
LSB (max)
LSB (min)
f
IN
= 1 kHz, V
IN
= 2.5 V
PP
f
IN
= 20 kHz, V
IN
= 2.5 V
PP
f
IN
= 40 kHz, V
IN
= 2.5 V
PP
V
IN
= 2.5 V
PP
, where S/(N+D)
drops 3 dB
69.4
68.3
65.7
31
dB
dB
dB
kHz
3 dB Full Power Bandwidth
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D)
Signal-to-Noise Plus
Distortion Ratio
f
IN
= 1 kHz, V
IN
=
±
2.5V
f
IN
= 20 kHz, V
IN
=
±
2.5V
f
IN
= 40 kHz, V
IN
=
±
2.5V
V
IN
=
±
2.5V, where S/(N+D)
drops 3 dB
77.0
73.9
67.0
40
dB
dB
dB
kHz
3 dB Full Power Bandwidth
REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS
C
REF
Reference Input Capacitance
C
A/D
A/DIN1 and A/DIN2 Analog Input
Capacitance
A/DIN1 and A/DIN2 Analog Input
Leakage Current
CH0–CH7 and COM Input Voltage
85
75
pF
pF
V
IN
= +3.3V or
V
IN
= 0V
±
0.1
±
1.0
μA (max)
GND 0.05
V
A
+ + 0.05
V (min)
V (max)
pF
C
CH
CH0–CH7 and COM Input
Capacitance
MUX Output Capacitance
Off Channel Leakage (Note 16)
CH0–CH7 and COM Pins
10
C
MUXOUT
20
pF
On Channel = 3.3V and
Off Channel = 0V
On Channel = 0V and
Off Channel = 3.3V
0.01
0.3
μA (min)
0.01
0.3
μA (max)
A
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