2.0 Electrical Specifications
2.1 RATINGS
2.1.1 Absolute Maximum Ratings
(Notes 1 & 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
A
a
and V
D
a
)
Voltage at Input and Output Pins
except IN0–IN3 (LM12434)
and IN0–IN7 (LM12
à
L
ó
438)
Voltage at Analog Inputs IN0–IN3 (LM12434)
and IN0–IN7 (LM12
à
L
ó
438)
l
V
A
a
b
V
D
a
l
l
AGND
b
DGND
l
Input Current at Any Pin (Note 3)
6.0V
b
0.3V to V
a
a
0.3V
GND
b
5V to V
a
a
5V
300 mV
300 mV
g
5 mA
g
20 mA
Package Input Current (Note 3)
Power Dissipation (T
A
e
25
§
C) (Note 4)
V Package
WM Package
Storage Temperature
b
65
§
C to
a
150
§
C
Soldering Information, Lead Temperature (Note 19)
V Package, Vapor Phase (60 seconds)
Infrared (15 seconds)
WM Package, Vapor Phase (60 seconds)
Infrared (15 seconds)
ESD Susceptibility (Note 5)
1.5 kV
2.1.2 Operating Ratings
(Notes 1 & 2)
Temperature Range
LM12434CIV/LM12
à
L
ó
438CIV
LM12434CIWM, LM12
à
L
ó
438CIWM
b
40
§
C
s
T
A
s
85
§
C
Supply Voltage
V
A
a
, V
D
a
l
V
A
a
b
V
D
a
l
l
AGDND
b
DGND
l
Analog Inputs Range
(T
min
s
T
A
s
T
max
)
b
40
§
C
s
T
A
s
85
§
C
3.0V to 5.5V
s
100 mV
s
100 mV
GND
s
V
IN
a
s
V
A
a
1V
s
V
REF
a
s
V
A
a
0V
s
V
REF
b
s
V
REF
a
b
1V
1V
s
V
REF
s
V
A
a
V
REF
a
Input Voltage
V
REF
b
Input Voltage
V
REF
a
b
V
REF
b
V
REF
Common Mode
Range (Note 16)
0.1 V
A
a
s
V
REFCM
s
0.6 V
A
a
2.2 PERFORMANCE CHARACTERISTICS
All specifications apply to the LM12434, LM12438, and LM12L438 unless otherwise
noted. Specifications in braces
à ó
apply only to the LM12L438.
2.2.1 Converter Static Characteristics
The following specifications apply to the LM12434 and LM12
à
L
ó
438 for V
A
a
e
V
D
a
e
5V
à
3.3V
ó
, AGND
e
DGND
e
0V, V
REF
a
e
4.096V
à
2.5V
ó
, V
REF
b
e
0V, 12-bit
a
sign conversion mode, f
CLK
e
8.0 MHz
à
6 MHz
ó
, R
S
e
25
X
, source impedance for V
REF
a
and V
REF
b
s
25
X
, fully-differential input with fixed 2.048V
à
1.25V
ó
common-mode voltage, and minimum 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 6, 7, 8 and 9)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limit)
ILE
Positive and Negative Integral
Linearity Error
After Auto-Cal (Notes 12, 17)
g
0.35
g
1
LSB (max)
TUE
Total Unadjusted Error
After Auto-Cal (Note 12)
g
1
LSB
Resolution with No Missing Codes
After Auto-Cal (Note 12)
13
Bits
DNL
Differential Non-Linearity
After Auto-Cal
g
0.2
g
1
LSB (max)
Zero Error
After Auto-Cal (Notes 13, 17)
g
0.2
g
1
LSB (max)
Positive Full-Scale Error
After Auto-Cal (Notes 12, 17)
g
0.2
g
2
LSB (max)
Negative Full-Scale Error
After Auto-Cal (Notes 12, 17)
g
0.2
g
2
LSB (max)
DC Common Mode Error
(Note 14)
g
2
g
3.5
à
g
4.0
ó
LSB (max)
ILE
8-Bit
a
Sign and ‘‘Watchdog’’
Mode Positive and Negative
Integral Linearity Error
(Note 12)
g
0.15
g
1/2
LSB (max)
TUE
8-Bit
a
Sign and ‘‘Watchdog’’ Mode
Total Unadjusted Error
After Auto-Zero
g
1/2
g
1/2
LSB (max)
8-Bit
a
Sign and ‘‘Watchdog’’ Mode
Resolution with No Missing Codes
9
Bits (max)
5