LTC1417 データシートの表示（PDF） - Linear Technology
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LTC1417 Datasheet PDF : 32 Pages
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LTC1417
WU
TI I G CHARACTERISTICS The q indicates specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
tH SCLK
tL SCLK
tH EXTCLKIN
tL EXTCLKIN
SCLK High Time
SCLK Low Time
EXTCLKIN High Time
EXTCLKIN Low Time
(Note 9)
(Note 9)
q 10
q 10
q 0.04
q 0.04
ns
ns
20
µs
20
µs
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 VSS or above VDD, they
will be clamped by internal diodes. This product can handle input currents
greater than 100mA without latchup if the pin is driven below VSS (ground
for unipolar mode) or above VDD.
Note 4: When these pin voltages are taken below VSS they will be clamped
by internal diodes. This product can handle input currents greater than
100mA below VSS without latchup. These pins are not clamped to VDD.
Note 5: VDD = 5V, VSS = – 5V, fSAMPLE = 400kHz, tr = tf = 5ns unless
otherwise specified.
Note 6: Linearity, offset and full-scale specifications apply for a single-
ended AIN+ input with AIN– grounded.
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: Guaranteed by design, not subject to test.
Note 10: Recommended operating conditions.
Note 11: 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 625ns after
conversion start or after BUSY rises.
Note 12: Typical RMS noise at the code transitions. See Figure 2 for
histogram.
Note 13: t11 of 40ns maximum allows fSCLK up to 10MHz for rising
capture with 50% duty cycle. fSCLK up to 20MHz for falling capture with
5ns setup time.
TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25°C)
Typical INL Curve
1.0
0.5
Differential Nonlinearity
vs Output Code
1.0
0.5
0
0
–0.5
– 0.5
–1.0
0
4096
8192
12288
OUTPUT CODE
16384
1417 G01
– 1.0
0
4096
8192 12288
OUTPUT CODE
16384
1417 G02
S/(N + D) vs Input Frequency
and Amplitude
90
80 VIN = 0dB
70
60 VIN = –20dB
50
40
30 VIN = –60dB
20
10
0
1k
10k
100k
1M
INPUT FREQUENCY (Hz)
1417 G03
5
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