Datasheet

3
LTC7545A
ELECTRICAL CHARACTERISTICS
V
DD
= 5V, V
REF
= 10V, V
OUT1
= AGND = 0V, T
A
= T
MIN
to T
MAX,
unless otherwise noted.
ALL GRADES
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Digital Inputs
V
IH
Digital Input High Voltage ● 2.4 V
V
IL
Digital Input Low Voltage ● 0.8 V
I
IN
Digital Input Current ● 0.001 ±1 µA
C
IN
Digital Input Capacitance (Note 3) V
IN
= 0V ● 8pF
Timing Characteristics (Note 3)
t
CS
CS to WR Setup Time ● 100 ns
t
CH
CS to WR Hold Time ● 0ns
t
WR
Write Pulse Width ● 100 ns
t
DS
Data Setup Time ● 100 ns
t
DH
Data Hold Time ● 5ns
Power Supply
V
DD
Supply Voltage ● 4.75 5 5.25 V
I
DD
Supply Current All Digital Inputs = V
IH
or V
IL
● 2mA
All Digital Inputs = 0V or V
DD
● 10 100 µA
V
DD
= 15V, V
REF
= 10V, V
OUT1
= AGND = 0V, T
A
= T
MIN
to T
MAX,
unless otherwise noted.
The ● denotes specificatons which apply over the full operating
temperature range.
Note 1: ±0.5LSB = ±0.012% of full scale.
Note 2: Using internal feedback resistor.
Note 3: Guaranteed by design, not subject to test.
Note 4: I
OUT1
with DAC register loaded to all 0s.
Note 5: Typical temperature coefficient is 100ppm/°C.
Note 6: OUT1 load = 100Ω in parallel with 13pF.
Note 7: To 0.01% for a full-scale change, measured from the falling
edge of WR, CS = 0V.
Note 8: From digital input change to 90% of final analog output.
Note 9: V
REF
=
0V. DAC register contents changed from all 0s to all 1s
or all 1s to all 0s.
ALL GRADES
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Digital Inputs
V
IH
Digital Input High Voltage ● 13.5 V
V
IL
Digital Input Low Voltage ● 1.5 V
I
IN
Digital Input Current ● ±1 µA
C
IN
Digital Input Capacitance (Note 3) V
IN
= 0V ● 8pF
Timing Characteristics (Note 3)
t
CS
CS to WR Setup Time ● 75 ns
t
CH
CS to WR Hold Time ● 0ns
t
WR
Write Pulse Width ● 75 ns
t
DS
Data Setup Time ● 60 ns
t
DH
Data Hold Time ● 5ns
Power Supply
V
DD
Supply Voltage ● 14.25 15 15.75 V
I
DD
Supply Current All Digital Inputs = V
IH
or V
IL
● 2mA
All Digital Inputs = 0V or V
DD
● 10 100 µA