adc12l032 National Semiconductor Corporation, adc12l032 Datasheet - Page 5

• Manufacturer Part Number: adc12l032
• Description: 3.3v Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
• Manufacturer: National Semiconductor Corporation

STATIC CONVERTER CHARACTERISTICS
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D) Signal-to-Noise Plus Distortion Ratio
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S/(N+D) Signal-to-Noise Plus Distortion Ratio
REFERENCE INPUT, ANALOG INPUTS AND MULTIPLEXER CHARACTERISTICS
C
C
C
C
R
Symbol
REF
A/D
CH
MUXOUT
ON
Converter Electrical Characteristics
The following specifications apply for V
sion mode, f
1.250V common-mode voltage, and 10(t
T
MIN
to T
Multiplexer Chan-to-Chan Matching
Power Supply Sensitivity
Output Data from
“12-Bit Conversion of Offset”
(see Table 5)
Output Data from
“12-Bit Conversion of Full-Scale”
(see Table 5)
−3 dB Full Power Bandwidth
−3 dB Full Power Bandwidth
Reference Input Capacitance
A/DIN1 and A/DIN2 Analog Input
Capacitance
A/DIN1 and A/DIN2 Analog Input
Leakage Current
CH0–CH7 and COM Input Voltage
CH0–CH7 and COM Input
Capacitance
MUX Output Capacitance
Off Channel Leakage (Note 16)
CH0–CH7 and COM Pins
On Channel Leakage (Note 16)
CH0–CH7 and COM Pins
MUXOUT1 and MUXOUT2 Leakage
Current
MUX On Resistance
R
Channel-to-Channel Crosstalk
MUX Bandwidth
MAX
ON
CK
Matching Channel to Channel
; all other limits T
= f
SK
= 5 MHz, R
Parameter
Integral Linearity Error
+ Full-Scale Error
− Full-Scale Error
A
= T
S
Offset Error
= 25Ω, source impedance for V
J
= 25˚C. (Notes 7, 8, 9)
+
CK
= V
) acquisition time unless otherwise specified. Boldface limits apply for T
A
+ = V
V
(Note 20)
(Note 20)
f
f
f
V
f
f
f
V
V
On Channel = 3.3V and Off Channel = 0V
On Channel = 0V and Off Channel = 3.3V
On Channel = 3.3V and Off Channel = 0V
On Channel = 0V and Off Channel = 3.3V
V
V
V
V
IN
IN
IN
IN
IN
IN
+
IN
IN
IN
MUXOUT
IN
IN
IN
= +3.3V
= 1 kHz, V
= 20 kHz, V
= 40 kHz, V
= 1 kHz, V
= 20 kHz, V
= 40 kHz, V
= 2.5 V
=
= +3.3V or V
= 1.65V and V
= 1.65V and V
= 3.3 V
D
+ = +3.3 V
±
2.5V, where S/(N+D) drops 3 dB
= 3.3V or V
P-P
P-P
±
10%
IN
IN
, where S/(N+D) drops 3 dB
, f
(Continued)
IN
IN
IN
IN
Conditions
5
DC
= 2.5 V
=
IN
IN
= 2.5 V
= 2.5 V
=
=
±
MUXOUT
MUXOUT
= 40 kHz
, V
= 0V
REF
±
±
2.5V
2.5V
2.5V
MUXOUT
REF
+ and V
P-P
P-P
PP
+ = +2.500 V
= 1.55V
= 1.55V
= 0V
REF
− ≤ 25Ω, fully-differential input with fixed
DC
, V
REF
(Note 10)
Typical
− = 0 V
±
−0.01
−0.01
1300
±
±
±
±
±
69.4
68.3
65.7
77.0
73.9
67.0
0.01
0.01
0.01
−72
0.05
31
40
85
75
10
20
90
0.5
0.5
0.5
0.5
0.1
5
DC
, 12-bit + sign conver-
GND − 0.05
V
(Note 11)
A
Limits
+ + 0.05
4095
4093
1900
±
±
±
−0.3
−0.3
+10
−10
0.3
0.3
0.3
±
1.5
1.5
1.0
1
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A
LSB (max)
LSB (max)
LSB (max)
LSB (max)
LSB (max)
LSB (min)
LSB (min)
= T
µA (max)
µA (max)
µA (max)
µA (max)
µA (min)
µA (min)
(Limits)
Ω (max)
V (max)
V (min)
Units
LSB
LSB
kHz
kHz
kHz
dB
dB
dB
dB
dB
dB
pF
pF
pF
pF
dB
J
%
=