LTC2450-1 Datasheet, PDF (3/20 Pages) Linear Technology – Easy-to-Use, Ultra-Tiny 16-Bit ADC

LTC2450-1
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range,otherwise specifications are at T_A = 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
V_CC
Supply Voltage
I_CC
Supply Current
Conversion
Sleep
CS = GND (Note 6)
CS = V_CC (Note 6)
l 2.7
5.5
V
l
350
600
μA
l
0.05
0.5
μA
DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the full
operating temperature range,otherwise specifications are at T_A = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
V_IH
High Level Input Voltage
V_IL
Low Level Input Voltage
I_IN
Digital Input Current
l V_CC – 0.3
l
l –10
V
0.3
V
10
μA
C_IN
Digital Input Capacitance
V_OH
High Level Output Voltage
I_O = –800μA
V_OL
Low Level Output Voltage
I_O = –1.6mA
I_OZ
Hi-Z Output Leakage Current
10
pF
l V_CC – 0.5
l
V
0.4
V
l –10
10
μA
TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature
range,otherwise specifications are at T_A = 25°C.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
t_CONV
f_SCK
t_lSCK
t_hSCK
t₁
t₂
t₃
t_KQ
Conversion Time
SCK Frequency Range
SCK Low Period
SCK High Period
CS Falling Edge to SDO Low Z
CS Rising Edge to SDO High Z
CS Falling Edge to SCK Falling Edge
SCK Falling Edge to SDO Valid
(Notes 7, 8)
(Notes 7, 8)
(Note 7)
l 14
16.6
21
ms
l
2
MHz
l 250
ns
l 250
ns
l
0
100
ns
l
0
100
ns
l 100
ns
l
0
100
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All voltage values are with respect to GND. V_CC = 2.7V to 5.5V
unless otherwise specified.
Note 3: Guaranteed by design, not subject to test.
Note 4: 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. Guaranteed by design, test correlation and 3 point transfer curve
measurement.
Note 5: CS = V_CC. A positive current is flowing into the DUT pin.
Note 6: SCK = V_CC or GND. SDO is high impedance.
Note 7: See Figure 3.
Note 8: See Figure 4.
Note 9: Input sampling current is the average input current drawn from
the input sampling network while the LTC2450-1 is actively sampling the
input.
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