LTC1650 データシートの表示（PDF） - Linear Technology
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LTC1650 Datasheet PDF : 12 Pages
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LTC1650
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. AVDD = 4.75V to 5.25V, AVSS = – 4.75V to – 5.25V, DVDD = 4.75V to
5.25V, REFLO = 0V, REFHI = 4.096V, VOUT unloaded, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Digital I/O Characteristics
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
VOH
Digital Output High Voltage
VOL
Digital Output Low Voltage
ILK
Digital Input Leakage
CIN
Digital Input Capacitance
Reset Characteristics
IOUT = –1mA, DOUT Only
IOUT = 1mA, DOUT Only
VIN = GND to VCC
(Note 3)
q 2.4
q
q VCC – 1.0
q
q
V
0.8
V
V
0.4
V
±10
µA
10
pF
RON
VOUT and VRST Switch Resistance
Threshold Voltage for Reset
Switching Characteristics
VRST = 0.5V (Note 7)
AVDD or DVDD (Note 8)
AVSS(Note 8)
q
200 500
Ω
q 1.5
2.5
3.2
V
q 1.5
2.5
3.2
V
t1
DIN Valid to CLK Setup
t2
DIN Valid to CLK Hold
t3
CLK High Time
t4
CLK Low Time
t5
CS/LD Pulse Width
t6
LSB CLK to CS/LD
t7
CS/LD Low to CLK
t8
DOUT Output Delay
t9
CLK Low to CS/LD Low
t10
CLR Pulse Width
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
CLOAD = 100pF
(Note 3)
q
40
ns
q
0
ns
q
40
ns
q
40
ns
q
50
ns
q
40
ns
q
20
ns
q
5
45
150
ns
q
20
ns
q
50
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Nonlinearity is defined from code 0 to code 65535 (full scale)
(end point INL, see Definitions section).
Note 3: Guaranteed by design. Not subject to test.
Note 4: To ±1LSB. Unipolar mode. DAC switched between all 1s and all 0s.
Note 5: Digital Inputs at 0V or DVDD.
Note 6: Measured at VOUT. REFHI = REFLO = 0V, unipolar mode.
Note 7: When part powers up or when it is reset, the output is connected
to VRST through this switch.
Note 8: Reset is active when any supply goes below this threshold.
Note 9: REFLO = 0V, REFHI = VREF. For REFLO ≠ 0V see Operation section.
4
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