LTC1282AC Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Lista de partido
LTC1282AC Datasheet PDF : 24 Pages
| |||
LTC1282
WU
TI I G CHARACTERISTICS (Note 5)
SYMBOL
PARAMETER
fSAMPLE(MAX) Maximum Sampling Frequency
tCONV
Conversion Time
t1
CS to RD Setup Time
t2
RD↓ to BUSY↓ Delay
t3
Data Access Time After RD↓
t4
RD Pulse Width
t5
CS to RD Hold Time
t6
Data Setup Time After BUSY↑
t7
Bus Relinquish Time
t8
HBEN to RD Setup Time
t9
HBEN to RD Hold Time
t10
Delay Between RD Operations
t11
Delay Between Conversions
t12
Aperture Delay of Sample-and-Hold
CONDITIONS
Commercial (Note 13)
Military (Note 13)
Commercial
Military
CL = 50pF
Commercial
Military
CL = 20pF (Note 13)
Commercial
Military
CL = 100pF (Note 13)
Commercial
Military
(Note 13)
(Note 13)
(Note 13)
Commercial
Military
(Note 13)
Commercial
Military
(Note 13)
(Note 13)
Commercial (Note 13)
Military (Note 13)
LTC1282A/LTC1282B
MIN TYP MAX
UNITS
q
140
kHz
q
120
kHz
q
6.0
µs
q
6.5
µs
q
0
ns
140 200
ns
q
230
ns
q
260
ns
100 180
ns
q
200
ns
q
220
ns
110 200
ns
q
240
ns
q
260
ns
q
t3
ns
q
0
ns
60
85
ns
q
110
ns
q
120
ns
40
60
120
ns
q
40
130
ns
q
40
150
ns
q
0
ns
q
0
ns
q
40
ns
q
1140 450
ns
q
1500
ns
30
ns
The q indicates specifications which apply over the full operating
temperature range; all other limits and typicals TA = 25°C.
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 60mA below VSS or above VDD without latchup.
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
60mA below VSS without latchup. These pins are not clamped to VDD.
Note 5: VDD = 3V, VSS = 0V for unipolar mode and VSS = – 3V for bipolar
mode, fSAMPLE = 140kHz, tr = tf = 5ns unless otherwise specified.
Note 6: Linearity, offset and full-scale specifications apply for unipolar and
bipolar modes.
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 different voltage measured from – 0.5LSB
when the output code flickers between 0000 0000 0000 and 1111 1111
1111.
Note 9: Full-scale change when VSS = 0V (Unipolar Mode) or
– 3V (Bipolar Mode).
Note 10: Full-scale change when VDD = 3V.
Note 11: The LTC1282 can perform unipolar and bipolar conversions.
When VSS is grounded (i.e. – 0.1V ≤ VSS), the ADC will convert in unipolar
mode with input voltage of 0V to 2.5V. When VSS is taken negative (i.e. VSS
≤ – 2.5V), the ADC will convert in bipolar mode with an input voltage of
±1.25V. AIN must not exceed VDD or fall below VSS by more than 50mV for
specified accuracy.
Note 12: Guaranteed by design, not subject to test.
Note 13: Recommended operating conditions.
Note 14: Commercial grade parts are designed to operate over the
temperature range of – 40°C to 85°C but are neither tested nor guaranteed
beyond 0°C to 70°C. Industrial grade parts specified and tested over
– 40°C to 85°C are available on special request. Consult factory.
4
Share Link: 