LTC1851CFW Linear Technology, LTC1851CFW Datasheet - Page 6

• Manufacturer Part Number: LTC1851CFW
• Description: IC ADC 12BIT 1.25MSPS 48-TSSOP
• Manufacturer: Linear Technology

Specifications of LTC1851CFW

• Number Of Bits: 12
• Sampling Rate (per Second): 1.25M
• Data Interface: Parallel
• Number Of Converters: 1
• Power Dissipation (max): 50mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-TFSOP (0.240", 6.10mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1850/LTC1851
TI I G CHARACTERISTICS
range, otherwise specifications are at T
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
6
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, OGND and
GND wired together unless otherwise noted.
Note 3: When these pin voltages are taken below ground or above V
they will be clamped by internal diodes. This product can handle input
currents of 100mA below ground or above V
Note 4: When these pin voltages are taken below ground, they will be
clamped by internal diodes. This product can handle input currents of
100mA below ground without latchup. These pins are not clamped to V
Note 5: V
otherwise specified.
Note 6: Linearity, offset and full-scale specifications apply for a single-
ended input on any channel with COM grounded.
17
18
19
20
21
22
23
24
25
26
27
W
DD
U
= 4.75V to 5.25V, f
PARAMETER
WR High Time
M1 to M0 Setup Time
M0 to BUSY Delay
M0 to WR (or RD) Setup Time
M0 High Pulse Width
RD High Time Between Readback Reads
Last WR (or RD) to M0
M0 to RD Setup Time
M0 to CONVST
Aperture Delay
Aperture Jitter
SAMPLE
= 1.25MHz, t
DD
A
= 25 C. (Note 5)
without latchup.
r
= t
f
= 2ns unless
The
CONDITIONS
(Note 10)
(Notes 9, 10)
M1 High
(Notes 9, 10)
(Note 10)
(Note 10)
(Note 10)
(Notes 9, 10)
(Note 10)
denotes the specifications which apply over the full operating temperature
DD
,
DD
.
Note 7: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual end points 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 1111 and 1000 0000 0000 for
LTC1851 and between 01 1111 1111 and 10 0000 0000 for LTC1850.
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
the best results, ensure that CONVST returns high either within 400ns
after the start of the conversion or after BUSY rises.
Note 12: The analog input range is determined by the voltage on
REFCOMP. The gain error specification is tested with an external 4.096V
but is valid for any value of REFCOMP.
MIN
50
10
t
50
50
10
t
t
19
19
19
– 0.5
TYP
20
2
MAX
UNITS
ps
18501f
RMS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns