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LM4031AI Folha de dados(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças LM4031AI
Descrição Electrónicos  Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4031AI Folha de dados(HTML) 6 Page - National Semiconductor (TI)

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Converter Electrical Characteristics (Continued)
The following specifications apply for V
+ =V
A+=VD+ = +5.0 VDC,VREF+ = +4.096 VDC,VREF−=0 VDC, 12-bit + sign conver-
sion mode, f
CK =fSK = 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, fCK =fSK = 5 MHz for the
ADC12030, ADC12032, ADC12034 and ADC12038, R
S =25
Ω, source impedance for V
REF+ and VREF
≤ 25Ω, fully-differential
input with fixed 2.048V common-mode voltage, and 10(t
CK) acquisition time unless otherwise specified. Boldface limits apply
for T
A =TJ =TMIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limits)
STATIC CONVERTER CHARACTERISTICS
+INL
Positive Integral Linearity Error
8-bit + sign mode (Note 12)
±1/2
LSB (max)
−INL
Negative Integral Linearity Error
8-bit + sign mode (Note 12)
±1/2
LSB (max)
DNL
Differential Non-Linearity
8-bit + sign mode
±3/4
LSB (max)
Positive Full-Scale Error
8-bit + sign mode (Note 12)
±1/2
LSB (max)
Negative Full-Scale Error
8-bit + sign mode (Note 12)
±1/2
LSB (max)
Offset Error
8-bit + sign mode,
after Auto-Zero (Note 13)
±1/2
LSB (max)
V
IN(+)=VIN(−) = + 2.048V
TUE
Total Unadjusted Error
8-bit + sign mode
after Auto-Zero
±3/4
LSB (max)
(Notes 12, 13, 14)
Multiplexer Channel
to Channel Matching
±0.05
LSB
Power Supply Sensitivity
V
+ = +5V ±10%
V
REF = +4.096V
Offset Error
±0.5
±1
LSB (max)
+ Full-Scale Error
±0.5
±1.5
LSB (max)
− Full-Scale Error
±0.5
±1.5
LSB (max)
+ Integral Linearity Error
±0.5
LSB
− Integral Linearity Error
±0.5
LSB
Output Data from
(Note 20)
+10
LSB (max)
“12-Bit Conversion of Offset”
−10
LSB (min)
(see Table 5)
Output Data from
(Note 20)
4095
LSB (max)
“12-Bit Conversion of Full-Scale”
4093
LSB (min)
(see Table 5)
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D)
Signal-to-Noise Plus
f
IN = 1 kHz, VIN =5 VPP,VREF
+ = 5.0V
69.4
dB
Distortion Ratio
f
IN = 20 kHz, VIN =5 VPP,VREF
+ = 5.0V
68.3
dB
f
IN = 40 kHz, VIN =5 VPP,VREF+ = 5.0V
65.7
dB
−3 dB Full Power Bandwidth
V
IN =5 VPP, where S/(N+D) drops 3 dB
31
kHz
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D)
Signal-to-Noise Plus
f
IN = 1 kHz, VIN = ±5V, VREF
+ = 5.0V
77.0
dB
Distortion Ratio
f
IN = 20 kHz, VIN = ±5V, VREF
+ = 5.0V
73.9
dB
f
IN = 40 kHz, VIN = ±5V, VREF
+ = 5.0V
67.0
dB
−3 dB Full Power Bandwidth
V
IN = ±5V, where S/(N+D) drops 3 dB
40
kHz
REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS
C
REF
Reference Input Capacitance
85
pF
C
A/D
A/DIN1 and A/DIN2 Analog
75
pF
Input Capacitance
A/DIN1 and A/DIN2 Analog
V
IN = +5.0V or
±0.1
±1.0
µA (max)
Input Leakage Current
V
IN =0V
CH0–CH7 and COM
GND − 0.05
V (min)
Input Voltage
V
A+ + 0.05
V (max)
www.national.com
6


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