User Manual

Converter Electrical Characteristics (Continued)
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
(Note 10)
Typical
Limits
(Limits)
Units
(Note 11)
STATIC CONVERTER CHARACTERISTICS (Continued)
Negative Full-Scale Error 8-bit
a
sign mode (Note 12)
g
1/2 LSB (max)
Offset Error 8-bit
a
sign mode,
after Auto-Zero (Note 13)
g
1/2 LSB (max)
V
IN
(
a
)
e
V
IN
(
b
)
ea
1.250V
TUE Total Unadjusted Error 8-bit
a
sign mode
after Auto-Zero
g
3/4 LSB (max)
(Notes 12, 13 and 14)
Multiplexer Channel to Channel
g
0.05 LSB
Matching
Power Supply Sensitivity V
a
ea
3.3V
g
10%
Offset Error
g
0.5
g
1 LSB (max)
a
Full-Scale Error
g
0.5
g
1.5 LSB (max)
b
Full-Scale Error
g
0.5
g
1.5 LSB (max)
a
Integral Linearity Error
g
0.5 LSB
b
Integral Linearity Error
g
0.5 LSB
Output Data from (Note 20)
a
10 LSB (max)
‘‘12-Bit Conversion of Offset’’
b
10 LSB (min)
(see Table V)
Output Data from (Note 20)
4095 LSB (max)
‘‘12-Bit Conversion of Full-Scale’’
4093 LSB (min)
(see Table V)
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S/(N
a
D) Signal-to-Noise Plus f
IN
e
1 kHz, V
IN
e
2.5 V
PP
69.4 dB
Distortion Ratio f
IN
e
20 kHz, V
IN
e
2.5 V
PP
68.3 dB
f
IN
e
40 kHz, V
IN
e
2.5 V
PP
65.7 dB
b
3 dB Full Power Bandwidth V
IN
e
2.5 V
PP
, where S/(N
a
D) drops 3 dB 31 kHz
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S/(N
a
D) Signal-to-Noise Plus f
IN
e
1 kHz, V
IN
e
g
2.5V 77.0 dB
Distortion Ratio f
IN
e
20 kHz, V
IN
e
g
2.5V 73.9 dB
f
IN
e
40 kHz, V
IN
e
g
2.5V 67.0 dB
b
3 dB Full Power Bandwidth V
IN
e
g
2.5V, where S/(N
a
D) drops 3 dB 40 kHz
4