LTC1406 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1406' PDF : 16 Pages View PDF
LTC1406
WU
TI I G CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. (Note 5)
SYMBOL
fSMPL(MAX)
t1
t2
t3
t4
t5
t6
PARAMETER
Maximum Sampling Frequency
Clock Period
Pulse Width High
Pulse Width Low
Output Delay
Pipeline Delay
Aperture Delay
Aperture Jitter
CONDITIONS
(Notes 11, 12)
(Notes 11, 12)
(Notes 11, 12)
CL = 15pF
MIN TYP MAX UNITS
q 20
MHz
q 50
ns
q 25
ns
q 25
ns
15
25
ns
5
Cycles
3
ns
5
psRMS
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, OGND
and AGND wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below ground or above VDD,
they will be clamped by internal diodes. This product can handle input
currents greater than 100mA below ground or above VDD without latchup.
Note 4: When these pin voltages are taken below ground they will be
clamped by internal diodes. This product can handle input currents up to
100mA below ground without latchup. These pins are not clamped to VDD.
Note 5: VDD = 5V, fSMPL = 20MHz and tr = tf = 2ns unless otherwise
specified.
Note 6: Linearity, offset and full-scale specifications apply for a single-
ended AIN+ input with AIN– tied to VREF = 2.5V.
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 0111 1111 and 1000 0000.
Note 9: Guaranteed by design, not subject to test.
Note 10: Recommended operating conditions.
Note 11: The falling CLK edge starts a conversion.
Note 12: At the maximum conversion rate, deviation from a 50% duty
cycle results in interstage settling times < 25ns and performance may
be affected.
Note 13: VIN = – Full Scale.
TYPICAL PERFORMANCE CHARACTERISTICS
S/(N + D) vs Input Frequency
52
48
44
40
36
32
28
24
20
16
12
8
4
0
100k
1M
10M
INPUT FREQUENCY (Hz)
100M
1406 G01
Signal-to-Noise Ratio vs
Input Frequency
52
48
44
40
36
32
28
24
20
16
12
8
4
0
100k
1M
10M
INPUT FREQUENCY (Hz)
100M
1406 G02
Distortion vs Input Frequency
0
–10
–20
–30
–40
–50
–60
THD
–70
2ND HARMONIC
–80
100k
1M
3RD HARMONIC
10M
100M
INPUT FREQUENCY (Hz)
1406 G03
4
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