
3
LTC7545A
ELECTRICAL CHARACTERISTICS
VDD = 5V, VREF = 10V, VOUT1 = AGND = 0V, TA = TMIN to TMAX, unless otherwise noted.
ALL GRADES
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Digital Inputs
VIH
Digital Input High Voltage
q
2.4
V
VIL
Digital Input Low Voltage
q
0.8
V
IIN
Digital Input Current
q
0.001
±1
A
CIN
Digital Input Capacitance
(Note 3) VIN = 0V
q
8pF
Timing Characteristics (Note 3)
tCS
CS to WR Setup Time
q
100
ns
tCH
CS to WR Hold Time
q
0ns
tWR
Write Pulse Width
q
100
ns
tDS
Data Setup Time
q
100
ns
tDH
Data Hold Time
q
5ns
Power Supply
VDD
Supply Voltage
q
4.75
5
5.25
V
IDD
Supply Current
All Digital Inputs = VIH or VIL
q
2mA
All Digital Inputs = 0V or VDD
q
10
100
A
VDD = 15V, VREF = 10V, VOUT1 = AGND = 0V, TA = TMIN to TMAX, unless otherwise noted.
The q 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: IOUT1 with DAC register loaded to all 0s.
Note 5: Typical temperature coefficient is 100ppm/
°C.
Note 6: OUT1 load = 100
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: VREF = 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
VIH
Digital Input High Voltage
q
13.5
V
VIL
Digital Input Low Voltage
q
1.5
V
IIN
Digital Input Current
q
±1
A
CIN
Digital Input Capacitance
(Note 3) VIN = 0V
q
8pF
Timing Characteristics (Note 3)
tCS
CS to WR Setup Time
q
75
ns
tCH
CS to WR Hold Time
q
0ns
tWR
Write Pulse Width
q
75
ns
tDS
Data Setup Time
q
60
ns
tDH
Data Hold Time
q
5ns
Power Supply
VDD
Supply Voltage
q
14.25
15
15.75
V
IDD
Supply Current
All Digital Inputs = VIH or VIL
q
2mA
All Digital Inputs = 0V or VDD
q
10
100
A