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ADC12132CIMSA Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza ADC12132CIMSA
Descripción Electrónicos  Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

ADC12132CIMSA Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Converter Electrical Characteristics
The following specifications apply for (V
+ =V
A+=VD+ = +5V, VREF+ = +4.096V, and fully differential input with fixed 2.048V
common-mode voltage) or (V
+ =V
A+=VD+ = 3.3V, VREF+ = +2.5V and fully-differential input with fixed 1.250V
common-mode voltage), V
REF− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, VREF− and VREF+
≤ 25Ω,f
CK =fSK = 5 MHz, and 10 (tCK) acquisition time unless otherwise specified. Boldface limits apply for TA =TJ =
T
MIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9) (Continued)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
Units
(Limits)
(Note 11)
STATIC CONVERTER CHARACTERISTICS (Continued)
Multiplexer Channel to Channel
±0.05
LSB
Matching
Power Supply Sensitivity
V
+ = +5V ±10%
V
REF = +4.096V
Offset Error
±0.5
LSB
+ Full-Scale Error
±0.5
LSB
− Full-Scale Error
±0.5
LSB
+ Integral Linearity Error
±0.5
LSB
− Integral Linearity Error
±0.5
LSB
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
Electrical Characteristics
The following specifications apply for (V
+ =V
A+=VD+ = +5V, VREF+ = +4.096V, and fully differential input with fixed 2.048V
common-mode voltage) or (V
+ =V
A+=VD+ = +3.3V, VREF+ = 2.5V and fully-differential input with fixed 1.250V
common-mode voltage), V
REF− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, VREF− and VREF+
≤ 25Ω,f
CK =fSK = 5 MHz, and 10 (tCK) acquisition time unless otherwise specified. Boldface limits apply for TA =TJ =
T
MIN to TMAX; all other limits TA =TJ = 25˚C. (Notes 7, 8, 9)
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note 10)
(Note 11)
(Limits)
REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS
C
REF
Reference Input Capacitance
85
pF
C
A/D
A/DIN1 and A/DIN2 Analog Input
75
pF
Capacitance
A/DIN1 and A/DIN2 Analog Input
V
IN = +5.0V or
±0.1
µA
Leakage Current
V
IN =0V
CH0–CH7 and COM Input Voltage
GND − 0.05
V
V
A+ + 0.05
C
CH
CH0–CH7 and COM Input
Capacitance
10
pF
C
MUXOUT
MUX Output Capacitance
20
pF
Off Channel Leakage (Note 16)
On Channel = 5V and
−0.01
µA
CH0–CH7 and COM Pins
Off Channel = 0V
On Channel = 0V and
0.01
µA
Off Channel = 5V
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