Linear Technology LTC4260, Datasheet

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LTC4260
4
4260fc
For more information www.linear.com/LTC4260
elecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
DD
= 48V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Timer
V
TIMER(H)
TIMER Pin High Threshold V
TIMER
Rising
l
1.2 1.235 1.28 V
V
TIMER(L)
TIMER Pin Low Threshold V
TIMER
Falling
l
0.1 0.2 0.3 V
I
TIMER(UP)
TIMER Pin Pull-Up Current V
TIMER
= 0V
l
–80 –100 –120 µA
I
TIMER(DN)
TIMER Pin Pull-Down Current V
TIMER
= 1.3V
l
1.4 2 2.6 µA
I
TIMER(RATIO)
TIMER Pin Current Ratio
I
TIMER(DN)
/I
TIMER(UP)
l
1.6 2 2.7 %
AC Parameters
t
PLH(GATE)
Input High (ON) to GATE High
Propagation Delay
C
GATE
= 1pF
l
1 3 µs
t
PHL(GATE)
Input High (OV, BD_PRST), Input Low
(ON, UV) to GATE Low Propagation Delay
C
GATE
= 1pF
l
0.5 3 µs
t
PHL(SENSE)
(V
DD
– SENSE) High to GATE Low V
DD
– SENSE = 200mV, C
GATE
= 10nF
l
0.4 1 µs
ADC
Resolution (No Missing Codes) (Note 4)
l
8 Bits
Integral Nonlinearity V
DD
– SENSE (Note 5)
SOURCE
ADIN
l
l
l
±0.5
±0.5
±0.5
±2
±1.25
±1.25
LSB
LSB
LSB
Offset Error V
DD
– SENSE
SOURCE
ADIN
l
l
l
±1.5
±1
±1
LSB
LSB
LSB
Full Scale Error (Note 6)
l
±5 LSB
Total Unadjusted Error (Note 6)
l
±5 LSB
Full Scale Voltage (Code 255) V
DD
– SENSE (Note 6)
SOURCE
ADIN
l
l
l
75
100
2.50
76.5
102
2.55
78
104
2.60
mV
V
V
Conversion Rate 10 Hz
I
2
C Interface
V
ADR(H)
ADR0 to ADR2 Input High Voltage
Threshold
INTV
CC
–0.6
INTV
CC
–0.45
INTV
CC
–0.25
V
V
ADR(L)
ADR0 to ADR2 Input Low Voltage
Threshold
0.25 0.45 0.65 V
I
ADR(IN)
ADR0 to ADR2 Input Current ADR0 to ADR2 = 0V, 5.5V
l
–80 80 µA
V
SDAI,SCL(TH)
SDAI, SCL Input Threshold
l
1.6 1.8 2 V
I
SDAI,SCL(IN)
SDAI, SCL Input Current SCL, SDAI = 5V
l
0 ±1 µA
V
SDAO(OL)
SDAO Output Low Voltage I
SDAO
= 5mA
l
0.2 0.4 V
V
ALERT (OL)
ALERT Output Low Voltage I
ALERT
= 5mA
l
0.2 0.4 V
I
SDAO,ALERT(IN)
SDAO, ALERT Input Current SDAO, ALERT = 5V
l
0 ±1 µA