LTC7545A Просмотр технического описания (PDF) - Linear Technology
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LTC7545A Datasheet PDF : 8 Pages
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ELECTRICAL CHARACTERISTICS
VDD = 5V, VREF = 10V, VOUT1 = AGND = 0V, TA = TMIN to TMAX, unless otherwise noted.
SYMBOL
PARAMETER
Digital Inputs
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
IIN
Digital Input Current
CIN
Digital Input Capacitance
Timing Characteristics (Note 3)
tCS
CS to WR Setup Time
tCH
CS to WR Hold Time
tWR
Write Pulse Width
tDS
Data Setup Time
tDH
Data Hold Time
Power Supply
VDD
Supply Voltage
IDD
Supply Current
CONDITIONS
(Note 3) VIN = 0V
All Digital Inputs = VIH or VIL
All Digital Inputs = 0V or VDD
LTC7545A
ALL GRADES
MIN
TYP
MAX
UNITS
q 2.4
V
q
0.8
V
q
0.001
±1
µA
q
8
pF
q 100
ns
q0
ns
q 100
ns
q 100
ns
q5
ns
q 4.75
5
5.25
V
q
2
mA
q
10
100
µA
VDD = 15V, VREF = 10V, VOUT1 = AGND = 0V, TA = TMIN to TMAX, unless otherwise noted.
SYMBOL
PARAMETER
Digital Inputs
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
IIN
Digital Input Current
CIN
Digital Input Capacitance
Timing Characteristics (Note 3)
tCS
CS to WR Setup Time
tCH
CS to WR Hold Time
tWR
Write Pulse Width
tDS
Data Setup Time
tDH
Data Hold Time
Power Supply
VDD
Supply Voltage
IDD
Supply Current
CONDITIONS
(Note 3) VIN = 0V
All Digital Inputs = VIH or VIL
All Digital Inputs = 0V or VDD
ALL GRADES
MIN
TYP
MAX
UNITS
q 13.5
q
q
q
V
1.5
V
±1
µA
8
pF
q 75
ns
q0
ns
q 75
ns
q 60
ns
q5
ns
q 14.25
15
15.75
V
q
2
mA
q
10
100
µA
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 = 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: VREF = 0V. DAC register contents changed from all 0s to all 1s
or all 1s to all 0s.
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