User Manual

Electrical Characteristics
The following specifications apply for V
a
e
V
A
a
e
V
D
a
ea
3.3 V
DC
,V
REF
a
ea
2.500 V
DC
,V
REF
b
e
0V
DC
, 12-bit
a
sign conversion mode, f
CK
e
f
SK
e
5 MHz, R
S
e
25X, source impedance for V
REF
a
and V
REF
b
s
25X, 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
e
T
J
e
T
MIN
to T
MAX
; all other limits T
A
e
T
J
e
25
§
C. (Notes 7, 8 and 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
ea
3.3V or
g
0.1
g
1.0 mA (max)
Leakage Current V
IN
e
0V
CH0–CH7 and COM Input Voltage GND
b
0.05 V (min)
V
A
a
a
0.05 V (max)
C
CH
CH0–CH7 and COM Input Capacitance 10 pF
C
MUXOUT
MUX Output Capacitance 20 pF
Off Channel Leakage (Note 16) On Channel
e
3.3V and
b
0.01
b
0.3 mA (min)
CH0–CH7 and COM Pins Off Channel
e
0V
On Channel
e
0V and
0.01 0.3 mA (max)
Off Channel
e
3.3V
On Channel Leakage (Note 16) On Channel
e
3.3V and
0.01 0.3 mA (max)
CH0–CH7 and COM Pins Off Channel
e
0V
On Channel
e
0V and
b
0.01
b
0.3 mA (min)
Off Channel
e
3.3V
MUXOUT1 and MUXOUT2 V
MUXOUT
e
3.3V or
0.01 0.3 mA (max)
Leakage Current V
MUXOUT
e
0V
R
ON
MUX On Resistance V
IN
e
1.65V and
1300 1900 X (max)
V
MUXOUT
e
1.55V
R
ON
Matching Channel to Channel V
IN
e
1.65V and
5%
V
MUXOUT
e
1.55V
Channel to Channel Crosstalk V
IN
e
3.3 V
PP
,f
IN
e
40 kHz
b
72 dB
MUX Bandwidth 90 kHz
5