Converter electrical characteristics – Rainbow Electronics ADC12138 User Manual
Page 4
Converter Electrical Characteristics
The following specifications apply for (V
a
e
V
A
a
e
V
D
a
e a
5V V
REF
a
e a
4 096V and fully differential input with fixed
2 048V common-mode voltage) or (V
a
e
V
A
a
e
V
D
a
e
3 3V V
REF
a
e a
2 5V and fully-differential input with fixed 1 250V
common-mode voltage) V
REF
b
e
0V 12-bit a sign conversion mode source impedance for analog inputs V
REF
b
and
V
REF
a
s
25X f
CK
e
f
SK
e
5 MHz and 10 (t
CK
) acquisition time unless otherwise specified Boldfade 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) (Continued)
Symbol
Parameter
Conditions
(Note 10)
Typical
Limits
(Limits)
Units
(Note 11)
STATIC CONVERTER CHARACTERISTICS
(Continued)
Multiplexer Channel to Channel
g
0 05
LSB
Matching
Power Supply Sensitivity
V
a
e a
5V
g
10%
V
REF
e a
4 096V
Offset Error
g
0 5
LSB
a
Full-Scale Error
g
0 5
LSB
b
Full-Scale Error
g
0 5
LSB
a
Integral Linearity Error
g
0 5
LSB
b
Integral Linearity Error
g
0 5
LSB
UNIPOLAR DYNAMIC CONVERTER CHARACTERISTICS
S (NaD)
Signal-to-Noise Plus
f
IN
e
1 kHz V
IN
e
5 V
PP
V
REF
a
e
5 0V
69 4
dB
Distortion Ratio
f
IN
e
20 kHz V
IN
e
5 V
PP
V
REF
a
e
5 0V
68 3
dB
f
IN
e
40 kHz V
IN
e
5 V
PP
V
REF
a
e
5 0V
65 7
dB
b
3 dB Full Power Bandwidth
V
IN
e
5 V
PP
where S (NaD) drops 3 dB
31
kHz
DIFFERENTIAL DYNAMIC CONVERTER CHARACTERISTICS
S (NaD)
Signal-to-Noise Plus
f
IN
e
1 kHz V
IN
e
g
5V V
REF
a
e
5 0V
77 0
dB
Distortion Ratio
f
IN
e
20 kHz V
IN
e
g
5V V
REF
a
e
5 0V
73 9
dB
f
IN
e
40 kHz V
IN
e
g
5V V
REF
a
e
5 0V
67 0
dB
b
3 dB Full Power Bandwidth
V
IN
e
g
5V where S (NaD) drops 3 dB
40
kHz
4