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LTC2654IGN-H12PBF Datasheet(PDF) 8 Page - Linear Technology

Part # LTC2654IGN-H12PBF
Description  Quad 16-/12-Bit Rail-to-Rail DACs with 10ppm/째C Max Reference
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2654IGN-H12PBF Datasheet(HTML) 8 Page - Linear Technology

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LTC2654
8
2654f
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V, VOUT unloaded unless otherwise specified.
TIMING CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C.
LTC2654B-L16/LTC2654-L12/LTC2654B-H16/LTC2654-H12
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCC = 2.7V to 5.5V
t1
SDI Valid to SCK Setup
l
4ns
t2
SDI Valid to SCK Hold
l
4ns
t3
SCK High Time
l
9ns
t4
SCK Low Time
l
9ns
t5
CS/LD Pulse Width
l
10
ns
t6
LSB SCK High to CS/LD High
l
7ns
t7
CS/LD Low to SCK High
l
7ns
t8
SDO Propagation Delay from SCK Falling Edge
CLOAD = 10pF
VCC = 4.5V to 5.5V
VCC = 2.7V to 4.5V
l
l
20
45
ns
ns
t9
CLR Pulse Width
l
20
ns
t10
CS/LD High to SCK Positive Edge
l
7ns
t12
LDAC Pulse Width
l
15
ns
t13
CS/LD High to LDAC High or Low Transition
l
200
ns
SCK Frequency
50% Duty Cycle
l
50
MHz
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 voltages with respect to GND.
Note 3: Linearity and monotonicity are defined from code kL to code 2N–1,
where N is the resolution and kL is the lower end code for which no output
limiting occurs. For VREF = 2.5V and N = 16, kL = 128 and linearity is
defined from code 128 to code 65535. For VREF = 2.5V and N = 12, kL = 8
and linearity is defined from code 8 to code 4,095.
Note 4: Inferred from measurement at code 128 (LTC2654-16), or code 8
(LTC2654-12).
Note 5: DC Crosstalk is measured with VCC = 5V and using internal
reference, with the measured DAC at mid-scale.
Note 6: This IC includes current limiting that is intended to protect the
device during momentary overload conditions. Junction temperature can
exceed the rated maximum during current limiting. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
Note 7: Temperature coefficient is calculated by dividing the maximum
change in output voltage by the specified temperature range. Maximum
temperature coefficient is guaranteed for C-grade only.
Note 8: Digital inputs at 0V or VCC.
Note 9: Guaranteed by design and not production tested.
Note 10: Internal Reference mode. DAC is stepped ¼ scale to ¾ scale and
¾ scale to ¼ scale. Load is 2kΩ in parallel with 200pF to GND.
Note 11: VCC = 5V, Internal Reference mode. DAC is stepped ±1 LSB
between half-scale and half-scale - 1. Load is 2kΩ in parallel with 200pF
to GND.
Note 12: DAC to DAC Crosstalk is the glitch that appears at the output
of one DAC due to a full-scale change at the output of another DAC. It is
measured with VCC = 5V and using internal reference, with the measured
DAC at mid-scale. CREFIN/OUT = No Load.
Note 13: Gain error specification may be degraded for reference input
voltages less than 1V. See Gain Error vs Reference Input Voltage curve in
the Typical Performance Characteristics section.
LTC2654B-H16/ LTC2654-H12 (Internal Reference = 2.048V)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
en
Output Voltage Noise Density
At f = 1kHz
At f = 10kHz
85
80
nV/√Hz
nV/√Hz
Output Voltage Noise
0.1Hz to 10Hz, Internal Reference
0.1Hz to 200kHz, Internal Reference
12
450
μVP-P
μVP-P


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