LTC1863L Linear Technology, LTC1863L Datasheet - Page 4

• Manufacturer Part Number: LTC1863L
• Description: (LTC1863L / LTC1867L) 12-/16-Bit 8-Channel 175ksps ADCs
• Manufacturer: Linear Technology

POWER REQUIRE E TS
LTC1863L/LTC1867L
range, otherwise specifications are at T
SYMBOL
V
I
P
range, otherwise specifications are at T
SYMBOL
f
t
t
f
t
t
t
t
t
t
t
t
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 GND (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 without latchup.
Note 4: When these pin voltages are taken below GND, they will be
clamped by internal diodes. This product can handle input currents of
greater than 100mA below GND without latchup. These pins are not
clamped to V
Note 5: V
t
Note 6: Linearity, offset and gain error specifications apply for both
unipolar and bipolar modes. The INL and DNL are tested in bipolar mode.
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.
TI I G CHARACTERISTICS
4
DD
SAMPLE
CONV
ACQ
SCK
1
2
3
4
5
6
7
8
r
DD
DISS
= t
W
f
= 5ns and V
DD
U
= 2.7V, f
DD
.
IN
–
SAMPLE
PARAMETER
Supply Voltage
Supply Current
Power Dissipation
PARAMETER
Maximum Sampling Frequency
Conversion Time
Acquisition Time
SCK Frequency
CS/CONV High Time
SDO Valid After SCK↓
SDO Valid Hold Time After SCK↓
SDO Valid After CS/CONV↓
SDI Setup Time Before SCK↑
SDI Hold Time After SCK↑
SLEEP Mode Wake-Up Time
Bus Relinquish Time After CS/CONV↑
= 1.25V for bipolar mode unless otherwise specified.
= 175ksps and f
W U
SCK
A
A
= 25°C. (Note 5)
= 25°C. (Note 5)
= 20MHz at 25°C,
The
The
●
denotes the specifications which apply over the full operating temperature
CONDITIONS
(Note 9)
f
NAP Mode
SLEEP Mode
f
CONDITIONS
Short CS/CONV Pulse Mode
C
C
C
C
C
SAMPLE
SAMPLE
DD
●
L
L
L
REFCOMP
L
= 25pF (Note 11)
= 25pF
= 25pF
= 25pF
denotes the specifications which apply over the full operating temperature
, they
= 175ksps, Internal REF
= 175ksps
= 10µF, C
Note 8: Unipolar offset is the offset voltage measured from +1/2LSB
when the output code flickers between 0000 0000 0000 0000 and
0000 0000 0000 0001 for LTC1867L and between 0000 0000 0000 and
0000 0000 0001 for LTC1863L. Bipolar offset is the offset voltage
measured from –1/2LSB when output code flickers between 0000 0000
0000 0000 and 1111 1111 1111 1111 for LTC1867L, and between
0000 0000 0000 and 1111 1111 1111 for LTC1863L.
Note 9: Recommended operating conditions. The input range of ±1.25V
for bipolar mode is measured with respect to V
mode, common mode input range is 0V to V
0V to 1.5V for the negative input. For bipolar mode, common mode input
range is 0V to V
Note 10: Guaranteed by design, not subject to test.
Note 11: t
with 50% duty cycle and f
setup time for the receiving logic).
VREF
= 2.2µF
2
of 47ns maximum allows f
DD
for both positive and negative inputs.
SCK
●
●
●
●
●
●
●
●
●
●
●
●
●
up to 20MHz for falling capture (with 3ns
LTC1863L/LTC1867L/LTC1867LA
LTC1863L/LTC1867L/LTC1867LA
2.01
MIN
MIN
175
2.7
40
15
15
5
SCK
up to 10MHz for rising capture
DD
0.75
1.68
TYP
TYP
170
100
0.2
3.2
22
17
20
–6
80
30
IN
2
6
for the positive input and
–
= 1.25V. For unipolar
MAX
MAX
3.6
2.7
3.7
20
47
40
50
1
3
1863l7lfa
UNITS
UNITS
MHz
mW
kHz
mA
ms
µA
µA
µs
µs
ns
ns
ns
ns
ns
ns
ns
V