LTC8143EN 查看數據表（PDF） - Linear Technology
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LTC8143EN Datasheet PDF : 8 Pages
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LTC7543/LTC8143
ELECTRICAL CHARACTERISTICS – LTC7543/LTC8143
VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
LTC7543/LTC8143
ALL GRADES
MIN TYP MAX
Timing Characteristics (Note 3)
tDS1
Serial Input to Strobe Setup Time
tDS2
(tSTB = 80ns)
tDS3
tDS4
tDH1
Serial Input to Strobe Hold Time
tDH2
(tSTB = 80ns)
tDH3
tDH4
tSRI
Serial Input Data Pulse Width
tSTB1, tSTB2, Strobe Pulse Width
tSTB3, tSTB4
tSTB1, tSTB2, Strobe Pulse Width
tSTB3, tSTB4
tLD1, tLD2 Load Pulse Width
tASB
LSB Strobed into Input Register
to Load DAC Register Time
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3 Used as the Strobe
STB4 Used as the Strobe
STB1 Used as the Strobe
STB2 Used as the Strobe
STB3 Used as the Strobe
STB4 Used as the Strobe
(Note 11)
(Note 12)
q
50
5
q
20
–5
q
0 – 30
q
0 – 30
q
30
10
q
50
25
q
80
55
q
80
55
q
80
q
80
q
80
q 140
q
0
tCLR
Clear Pulse Width
SRO Timing Characteristics (LTC8143 Only)
q
80
tPD
STB2, STB3, STB4 Strobe to SRO
CL = 50pF
Propagation Delay
q 220 120
tPD1
STB1 to SRO Propagation Delay
Power Supply
CL = 50pF
q 150 80
VDD
Supply Voltage
IDD
Supply Current
Digital Inputs = 0V or VDD
Digital Inputs = VIH or VIL
q 4.75 5 5.25
q
0.1
q
2
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
mA
mA
The q denotes specifications 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 with all 0s or IOUT2 with DAC
register loaded with all 1s.
Note 5: Typical temperature coefficient is 100ppm/°C.
Note 6: OUT 1 load = 100Ω in parallel with 13pF.
Note 7: To 0.01% for a full-scale change, measured from falling edge of
LD1 or LD2.
Note 8: VREF = 0V. DAC register contents changed from all 0s to all 1s or
from all 1s to all 0s.
Note 9: VREF = 6VRMS at 1kHz. DAC register loaded with all 1s.
Note 10: Calculation from en = √4KTRB where: K = Boltzmann constant
(J/K°); R = resistance (Ω); T = resistor temperature (°K); B = bandwidth
(Hz).
Note 11: Minimum high time for STB1, STB2, STB4. Minimum low time
for STB3.
Note 12. Minimum low time for STB1, STB2, STB4. Minimum high time
for STB3.
4
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