LTC1405 Linear Technology, LTC1405 Datasheet - Page 5

• Manufacturer Part Number: LTC1405
• Description: 12-Bit/ 5Msps/ Sampling ADC
• Manufacturer: Linear Technology

ELECTRICAL CHARACTERISTICS
Note 6: Dynamic specifications are guaranteed for dual supply operation
with a single-ended + A
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.
+ A
– A
V
mon mode for single supply operation. Bypass to GND
with a 1 F to 10 F ceramic.
SENSE (Pin 4): Reference Programming Pin. Ground
selects V
SENSE to V
V
10 F ceramic.
GND (Pin 6): DAC Reference Ground.
V
to 10 F ceramic.
GND (Pin 8): Analog Power Ground.
D11 to D0 (Pins 9 to 20): Data Outputs. The output format
is two’s complement.
PI FU CTIO S
CM
REF
DD
IN
IN
U
(Pin 7): Analog 5V Supply. Bypass to GND with a 1 F
(Pin 3): 2.5V Reference Output.Optional input com-
(Pin 5): DAC Reference. Bypass to GND with a 1 F to
(Pin 1): Positive Analog Input.
(Pin 2): Negative Analog Input.
REF
U
DD
= 4.096V. Short to V
to drive V
IN
input and – A
U
REF
with an external reference.
IN
grounded. For single supply
REF
for 2.048V. Connect
OGND (Pin 21): Output Logic Ground. Tie to GND.
OV
Connect to Pin 23 for 5V logic. If not shorted to Pin 23,
bypass to GND with a 1 F ceramic.
V
ceramic.
GND (Pin 24): Analog Power Ground.
V
not shorted to GND, bypass to GND with a 1 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 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.
DD
SS
DD
(Pin 25): Negative Supply. Can be – 5V or 0V. If V
(Pin 23): Analog 5V Supply. Bypass to GND with a 1 F
(Pin 22): Positive Supply for the Output Logic.
LTC1405
SS
5
is