LTC2249 Linear Technology, LTC2249 Datasheet - Page 5

• Manufacturer Part Number: LTC2249
• Description: 80Msps Low Power 3V ADC
• Manufacturer: Linear Technology

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range, otherwise specifications are at T
SYMBOL
f
t
t
t
t
Pipeline
Latency
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 GND and OGND
wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below GND or above V
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above V
Note 4: V
drive, unless otherwise noted.
TYPICAL PERFOR A CE CHARACTERISTICS
TI I G CHARACTERISTICS
s
L
H
AP
D
–0.5
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
W
0
0
Typical INL, 2V Range
DD
U
PARAMETER
Sampling Frequency
CLK Low Time
CLK High Time
Sample-and-Hold Aperture Delay
CLK to DATA Delay
Data Access Time After OE↓
BUS Relinquish Time
= 3V, f
4096
SAMPLE
CODE
8192
= 80MHz, input range = 2V
12288
W
2249 G01
16384
U
A
DD
= 25°C. (Note 4)
without latchup.
P-P
–0.2
–0.4
–0.6
–0.8
–1.0
0.6
0.4
with differential
1.0
0.8
0.2
0
The
0
Typical DNL, 2V Range
●
DD
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CONDITIONS
(Note 9)
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On (Note 7)
Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On (Note 7)
C
C
(Note 7)
denotes the specifications which apply over the full operating temperature
L
L
, they
4096
= 5pF (Note 7)
= 5pF (Note 7)
CODE
8192
Note 5: 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 6: Offset error is the offset voltage measured from –0.5 LSB when
the output code flickers between 00 0000 0000 0000 and
11 1111 1111 1111.
Note 7: Guaranteed by design, not subject to test.
Note 8: V
differential drive.
Note 9: Recommended operating conditions.
12288
DD
= 3V, f
2249 G02
16384
SAMPLE
= 80MHz, input range = 1V
–100
–110
–120
–10
–20
–30
–40
–50
–80
–90
–60
–70
0
0
8192 Point FFT, f
–1dB, 2V Range
●
●
●
●
●
●
●
●
5
MIN
5.9
5.9
1.4
1
5
5
10
FREQUENCY (MHz)
15
6.25
6.25
6.25
6.25
TYP
2.7
4.3
3.3
0
6
LTC2249
20
P-P
IN
= 5MHz,
with
25
MAX
500
500
500
500
5.4
8.5
80
10
30
35
UNITS
Cycles
2249 G03
5
MHz
2249f
ns
ns
ns
ns
ns
ns
ns
ns
40