LM12458CIV National Semiconductor, LM12458CIV Datasheet - Page 6

• Manufacturer Part Number: LM12458CIV
• Description: A/D Converter (A-D) IC
• Manufacturer: National Semiconductor

Specifications of LM12458CIV

• Resolution (bits): 13bit
• Sampling Rate: 114kSPS
• Input Channel Type: Differential, Single Ended
• Data Interface: Parallel
• No. Of Pins: 44
• Input Channels Per Adc: 8
• Mounting Type: Surface Mount
• No. Of Channels: 1
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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t
DSNR
SESNR
DSINAD
SESINAD
DTHD
SETHD
DENOB
SEENOB
DSFDR
t
t
WD
PU
WU
Symbol
Converter AC Characteristics
The following specifications apply to the LM12454, LM12458, and LM12H458 for V
12-bit + sign conversion mode, f
V
otherwise specified. Boldface limits apply for T
REF+
and V
“Watchdog” Mode
Comparison Time
Differential Signal-to-Noise
Ratio
Single-Ended Signal-to-Noise
Ratio
Differential Signal-to-Noise +
Distortion Ratio
Single-Ended Signal-to-Noise
+ Distortion Ratio
Differential Total Harmonic
Distortion
Single-Ended Total Harmonic
Distortion
Differential Effective Number
of Bits
Single-Ended Effective
Number of Bits
Differential Spurious Free
Dynamic Range
Multiplexer
Channel-to-Channel
Crosstalk
Power-Up Time
Wake-Up Time
REF−
≤ 25Ω, fully-differential input with fixed 2.5V common-mode voltage, and minimum acquisition time unless
Parameter
CLK
= 8.0 MHz (LM12H458) or f
Sequencer States S6, S4, and S5
(Figure 15)
V
V
V
V
V
V
V
V
V
V
LM12454 MUXOUT Only
V
LM12(H)458 MUX plus Converter
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
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
=
= 5 V
=
= 5 V
=
= 5 V
=
= 5 V
=
= 5 V
= 5 V
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
= 1 kHz
= 20 kHz
= 40 kHz
±
±
±
±
±
5V
5V
5V
5V
5V
A
(Notes 6, 7, 8, 9) (Continued)
p-p
p-p
p-p
p-p
P-P
P-P
= T
Conditions
, f
, f
J
IN
IN
= T
= 40 kHz,
= 40 kHz,
MIN
6
to T
CLK
MAX
= 5.0 MHz (LM12454/8), R
; all other limits T
(Note 10)
11 (t
Typical
−85.8
−79.9
−72.9
−80.3
−75.6
−72.8
77.5
75.2
74.7
69.8
69.2
66.6
76.9
73.9
70.7
69.4
68.3
65.7
12.6
12.2
12.1
11.3
11.2
10.8
87.2
78.9
72.8
−76
−78
10
10
A
CLK
+ = V
)
A
D
= T
+ = 5V, V
11 (t
Limits (Note 11)
J
S
= 25˚C.
= 25Ω, source impedance for
CLK
REF+
) + 50 ns
= 5V, V
REF−
Units
(max)
= 0V,
Bits
Bits
Bits
Bits
Bits
Bits
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ms
ms