參數(shù)資料
型號(hào)： LTC1405C
廠商： Linear Technology Corporation
英文描述： 12-Bit, 5Msps, Sampling ADC
中文描述： 12位，5Msps，采樣ADC
文件頁數(shù)： 5/16頁
文件大?。?/td> 218K
代理商： LTC1405C
5
LTC 1405
PI FU CTIO S
+A
IN
(Pin 1):
Positive Analog Input.
–A
IN
(Pin 2):
Negative Analog Input.
V
CM
(Pin 3):
2.5V Reference Output.Optional input com-
mon mode for single supply operation. Bypass to GND
with a 1
μ
F to 10
μ
F ceramic.
SENSE (Pin 4):
Reference Programming Pin. Ground
selects V
REF
= 4.096V. Short to V
REF
for 2.048V. Connect
SENSE to V
DD
to drive V
REF
with an external reference.
V
REF
(Pin 5):
DAC Reference. Bypass to GND with a 1
μ
F to
10
μ
F ceramic.
GND (Pin 6):
DAC Reference Ground.
V
DD
(Pin 7):
Analog 5V Supply. Bypass to GND with a 1
μ
F
to 10
μ
F ceramic.
GND (Pin 8):
Analog Power Ground.
D11 to D0 (Pins 9 to 20):
Data Outputs. The output format
is two’s complement.
OGND (Pin 21):
Output Logic Ground. Tie to GND.
OV
DD
(Pin 22):
Positive Supply for the Output Logic.
Connect to Pin 23 for 5V logic. If not shorted to Pin 23,
bypass to GND with a 1
μ
F ceramic.
V
DD
(Pin 23):
Analog 5V Supply. Bypass to GND with a 1
μ
F
ceramic.
GND (Pin 24):
Analog Power Ground.
V
SS
(Pin 25):
Negative Supply. Can be –5V or 0V. If V
SS
is
not shorted to GND, bypass to GND with a 1
μ
F ceramic.
CLK (Pin 26):
Conversion Start Signal. This active high
signal starts a conversion on its rising edge.
OF (Pin 27):
Overflow Output. This signal is high when the
digital output is 011111111111 or 100000000000.
GAIN (Pin 28):
Gain Select for Input PGA. 5V selects an
input gain of 1, 0V selects a gain of 2.
Note 6:
Dynamic specifications are guaranteed for dual supply operation
with a single-ended +A
IN
input and –A
IN
grounded. For single supply
dynamic specifications, refer to the Typical Performance Characteristics.
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 offset voltage measured from –0.5LSB
when the output code flickers between 0000 0000 0000 and
1111 1111 1111.
Note 9:
Guaranteed by design, not subject to test.
Note 10:
Recommended operating conditions.
ELECTRICAL CHARACTERISTICS
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PDF描述
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