LM12434CIWM NSC [National Semiconductor], LM12434CIWM Datasheet - Page 7

• Manufacturer Part Number: LM12434CIWM
• Description: Sign Data Acquisition System with Serial I/O and Self-Calibration
• Manufacturer: NSC [National Semiconductor]

Symbol
t
t
t
SNR
SNR
SINAD
SINAD
THD
THD
ENOB
ENOB
SFDR
SFDR
Z
CAL
WD
2 0 Electrical Specifications
2 2 2 Converter Dynamic Characteristics The following specifications apply only to the LM12434 and LM12438 for V
V
throughput rate
2 048V common-mode voltage and minimum acquisition time unless otherwise specified Boldface limits apply for T
T
D
J
a
e
e
T
MIN
Auto-Zero Time
Full Calibration Time
Throughput Rate
‘‘Watchdog’’ Mode Comparison Time Sequencer States S6 S4
Signal-to-Noise Ratio
Differential Input
Signal-to-Noise Ratio
Single-Ended Input
Signal-to-Noise
Differential Input
Signal-to-Noise
Single-Ended Input
Total Harmonic Distortion
Differential Input
Total Harmonic Distortion
Distortion Single-Ended Input
Effective Number of Bits
Differential Input
Effective Number of Bits
Single-Ended Input
Spurious Free Dynamic Range
Differential Input
Spurious Free Dynamic Range
Single-Ended Input
5V AGND
to T
e
MAX
133 3 kHz R
e
Parameter
all other limits T
DGND
a
a
Distortion Ratio
Distortion Ratio
e
S
0V V
e
25
A
REF
e
source impedance for V
a
T
J
(Continued)
e
Sequencer State S2 (Figure 10)
Sequencer State S2 (Figure 10)
(Note 18)
and S5 (Figure 10)
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
V
f
f
f
e
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
4 096V V
25 C (Notes 6 7 8 and 9) (Continued)
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
1 kHz
10 kHz
62 kHz
4 096 V
4 096 V
4 096 V
4 096 V
4 096V V
g
g
g
g
g
4 096V (Note 20)
4 096V (Note 20)
4 096V (Note 20)
4 096V (Note 20)
4 096V (Note 20)
Conditions
REF
p-p
p-p
p-p
p-p
7
p-p
b
e
REF
0V 12-bit
a
and V
REF
4944 (t
a
(Note 10)
76 (t
11 (t
Typical
b
sign conversion mode f
b
b
b
b
b
b
12 6
12 2
12 1
11 3
11 2
10 8
142
79
79
70
71
71
67
79
78
67
71
70
64
90
86
76
90
85
72
90
85
71
88
82
67
s
CLK
CLK
CLK
25
)
)
) 4944 (t
fully-differential input with fixed
76 (t
11 (t
CLK
CLK
(Note 11)
Limits
CLK
140
)
)
a
)
a
CLK
a
50 ns
50 ns
50 ns
e
8 0 MHz
A
a
(Limit)
A
Units
(max)
(max)
(max)
(min)
kHz
dBc
dBc
dBc
dBc
dBc
dBc
Bits
Bits
Bits
Bits
Bits
Bits
dBc
dBc
dBc
dBc
dBc
dBc
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
e
e