LTC1414 Linear Technology, LTC1414 Datasheet - Page 4

• Manufacturer Part Number: LTC1414
• Description: 14-Bit/ 2.2Msps/ Sampling A/D Converter
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
LTC1414
TI I G CHARACTERISTICS
The
temperature range; all other limits and typicals T
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to ground with DGND and
AGND wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below V
will be clamped by internal diodes. This product can handle input currents
greater than 100mA below V
Note 4: When these pin voltages are taken below V
by internal diodes. This product can handle input currents greater than
100mA below V
Note 5: V
otherwise specified.
4
SYMBOL
f
t
t
t
t
t
t
t
t
t
SAMPLE(MAX)
CONV
ACQ
THROUGHPUT
1
2
3
4
5
6
W U
14
13
12
11
10
9
8
7
6
5
4
3
2
1k
denotes specifications which apply over the full operating
S/(N + D) vs Input Frequency
f
SAMPLE
DD
= 5V, V
= 2.2MHz
10k
SS
INPUT FREQUENCY (Hz)
PARAMETER
Maximum Sampling Frequency
Conversion Time
Acquisition Time
Throughput Time (Acquisition + Conversion)
CONVST to BUSY Delay
Data Ready Before BUSY
Delay Between Conversions
CONVST Low Time
CONVST High Time
Aperture Delay of Sample-and-Hold
without latchup. These pins are not clamped to V
SS
= – 5V, f
100k
SS
SAMPLE
or above V
1M
W
= 2.2MHz and t
1414 TA02
DD
U
10M
without latchup.
86
80
74
68
A
= 25 C.
SS
SS
, they will be clamped
r
or above V
= t
f
= 5ns unless
90
80
70
60
50
40
30
20
10
0
(Note 5)
10k
Signal-to-Noise Ratio vs Input
Frequency
DD
CONDITIONS
C
(Note 9)
(Note 10)
(Note 10)
, they
DD
L
= 25pF
.
INPUT FREQUENCY (Hz)
100k
Note 6: Linearity, offset and full-scale specifications apply for a single-
ended A
Note 7: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual endpoints of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 8: Bipolar offset is the offset voltage measured from – 0.5LSB
when the output code flickers between 0000 0000 0000 00 and
1111 1111 1111 11.
Note 9: Recommended operating conditions.
Note 10: The falling CONVST edge starts a conversion. If CONVST returns
high at a critical point during the conversion it can create small errors. For
best results ensure that CONVST returns high either within 225ns after the
start of the conversion or after BUSY rises.
IN
1M
+
input with A
1414 G02
10M
IN
–
grounded.
–100
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
10k
Distortion vs Input Frequency
MIN
220
100
2.2
40
40
INPUT FREQUENCY (Hz)
100k
3rd
TYP
330
370
– 1
40
10
20
MAX
400
100
454
1M
THD
2nd
1414 G03
UNITS
MHz
10M
ns
ns
ns
ns
ns
ns
ns
ns
ns