LTC1531CSW View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1531CSW Datasheet PDF : 16 Pages
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LTC1531
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C, VCC = 5V.
SYMBOL
VIH
VIL
VOH
VOL
IINL, IINH
dV/dt
CISO
PARAMETER
SHDN Input High Voltage
SHDN Input Low Voltage
DATA, VALID, ZCDATA Output High Voltage
DATA, VALID, ZCDATA Output Low Voltage
SHDN Low or High Level Input Current
Continuous dV/dt Rejection
CONDITIONS
VCC = 4.5V
VCC = 5.5V
VCC = 4.5V, IO = – 400µA
VCC = 4.5V, IO = 1.6mA
VIN = 5V, 0V
(Note 8)
MIN TYP MAX
q 2.4
q
0.8
q 3.0
4.3
q
0.2
0.4
q
±1
q 50
70
2
UNITS
V
V
V
V
µA
V/µs
pF
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The sample rate is not continuous, but depends on VPW charging
rate. See Applications Information.
Note 3: See Applications Information for further description of the
comparator switched-capacitor input circuit.
Note 4: The sample rate, fSAMPLE, varies with loading on VPW and VREG.
Note 5: Load on CMPOUT pulls current from VREG when CMPOUT is high.
Note 6: Value derived from 1 second test.
Note 7: Zero-cross hysteresis is the minimum amount of signal amplitude
above or below 0V differential to retrigger the zero-cross comparator.
Note 8: Parameter not tested but guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 5V
VRIPPLE
3.3
CVPW = 1µF
IVREG = 5mA
TA = 25°C
2.5
tSAMPLE
VPW
VREG
0
100
200
300
TIME (ms)
NOTES: VRIPPLE DEPENDS ON CVPW AND IVPW + IVREG
tSAMPLE DEPENDS ON IVPW + IVREG
1531 F01
Figure 1. VPW Power-Up and
VREG Samples vs Time
VCC = 5V, CVPW = 1µF
IVREG = 100µA, TA = 25°C
3.3
2.5
0
0
10
20
30
40
TIME (ms)
NOTE: NONPERIODIC SAMPLES DUE TO DEPENDENCE
ON VPW > 3.3V AND THE POWER-LISTEN CYCLE
SAMPLING
1531 F02
Figure 2. VREG and VPW vs Time
(IVREG = 100µA)
3
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