LTC2228/LTC2227/LTC2226
5
222876fb
POWER REQUIREMENTS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. (Note 8)
SYMBOL PARAMETER CONDITIONS
LTC2228 LTC2227 LTC2226
UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
V
DD
Analog Supply Voltage (Note 9)
l
2.7 3 3.4 2.7 3 3.4 2.7 3 3.4 V
OV
DD
Output Supply Voltage (Note 9)
l
0.5 3 3.6 0.5 3 3.6 0.5 3 3.6 V
I
VDD
Supply Current
l
68.3 80 40 48 25 30 mA
P
DISS
Power Dissipation
l
205 240 120 144 75 90 mW
P
SHDN
Shutdown Power SHDN = H, OE = H,
No CLK
222mW
P
NAP
Nap Mode Power SHDN = H, OE = L,
No CLK
15 15 15 mW
TIMING CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature
range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS
LTC2228 LTC2227 LTC2226
UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX
f
S
Sampling Frequency (Note 9)
l
1 65 1 40 1 25 MHz
t
L
CLK Low Time Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
(Note 7)
l
l
7.3
5
7.7
7.7
500
500
11.8
5
12.5 500
500
18.9
5
20
20
500
500
ns
ns
t
H
CLK High Time Duty Cycle Stabilizer Off
Duty Cycle Stabilizer On
(Note 7)
l
l
7.3
5
7.7
7.7
500
500
11.8
5
12.5
12.5
500
500
18.9
5
20
20
500
500
ns
ns
t
AP
Sample-and-Hold
Aperture Delay
000ns
t
D
CLK to DATA Delay C
L
= 5pF (Note 7)
l
1.4 2.7 5.4 1.4 2.7 5.4 1.4 2.7 5.4 ns
Data Access Time
After OE↓
C
L
= 5pF (Note 7)
l
4.3 10 4.3 10 4.3 10 ns
BUS Relinquish Time (Note 7)
l
3.3 8.5 3.3 8.5 3.3 8.5 ns
Pipeline
Latency
5 5 5 Cycles
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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
DD
, they
will be clamped by internal diodes. This product can handle input currents
of greater than 100mA below GND or above V
DD
without latchup.
Note 4: V
DD
= 3V, f
SAMPLE
= 65MHz (LTC2228), 40MHz (LTC2227), or
25MHz (LTC2226), input range = 2V
P-P
with differential drive, unless
otherwise noted.
Note 5: Integral nonlinearity is defi ned 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 fl ickers between 0000 0000 0000 and 1111 1111 1111.
Note 7: Guaranteed by design, not subject to test.
Note 8: V
DD
= 3V, f
SAMPLE
= 65MHz (LTC2228), 40MHz (LTC2227), or
25MHz (LTC2226), input range = 1V
P-P
with differential drive.
Note 9: Recommend operating conditions.
