adc12132 National Semiconductor Corporation, adc12132 Datasheet - Page 6

• Manufacturer Part Number: adc12132
• Description: Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
• Manufacturer: National Semiconductor Corporation

www.national.com
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 f
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
common-mode voltage) or (V
voltage), V
5 MHz, and 10 (t
limits T
A
−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
= T
ON
REF
J
Matching Channel to Channel
= 25˚C. (Notes 7, 8, 9)
− = 0V, 12-bit + sign conversion mode, source impedance for analog inputs, V
CK
) acquisition time unless otherwise specified. Boldface limits apply for T
Parameter
+
= V
A
+ = V
+
D
= V
+ = 3.3V, V
A
+ = V
f
f
f
V
f
f
V
V
On Channel = 5V and
Off Channel = 0V
On Channel = 0V and
Off Channel = 5V
On Channel = 5V and
Off Channel = 0V
On Channel = 0V and
Off Channel = 5V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
MUXOUT
IN
MUXOUT
IN
MUXOUT
IN
= 1 kHz, V
= 20 kHz, V
= 40 kHz, V
= 1 kHz, V
= 20 kHz, V
= 40 kHz, V
= 5 V
=
= +5.0V or V
= 2.5V and
= 2.5V and
= 5 V
D
±
+ = +5V, V
REF
5V, where S/(N+D) drops 3 dB
PP
PP
= 5.0V or V
= 2.4V
= 2.4V
+ = 2.5V and fully-differential input with fixed 1.250V common-mode
, where S/(N+D) drops 3 dB
, f
IN
IN
IN
(Continued)
Conditions
IN
IN
IN
IN
6
= 5 V
=
= 40 kHz
IN
REF
= 5 V
= 5 V
=
=
±
= 0V
±
±
5V, V
+ = +4.096V, and fully differential input with fixed 2.048V
5V, V
5V, V
MUXOUT
PP
PP
PP
, V
, V
, V
REF
REF
REF
REF
REF
REF
+
= 0V
+
+
+
= 5.0V
+
+ = 5.0V
= 5.0V
= 5.0V
= 5.0V
= 5.0V
(V
GND − 0.05
(Note 10)
A
REF
Typical
A
+) + 0.05
−0.01
−0.01
±
69.4
68.3
65.7
77.0
73.9
67.0
0.01
0.01
0.01
−72
850
= T
31
40
85
75
10
20
90
0.1
5
−
and V
J
= T
MIN
REF
(Note 11)
+
to T
Limits
1900
≤ 25Ω, f
MAX
; all other
CK
(Limits)
Ω (max)
V (max)
V (min)
Units
= f
kHz
kHz
kHz
dB
dB
dB
dB
dB
dB
µA
µA
µA
µA
µA
µA
dB
pF
pF
pF
pF
%
SK
=