E4257ALPT Semtech, E4257ALPT Datasheet - Page 38

• Manufacturer Part Number: E4257ALPT
• Manufacturer: Semtech

Specifications of E4257ALPT

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
TEST AND MEASUREMENT PRODUCTS
AC Characteristics (continued)
2005 Semtech Corp. / Rev. 5, 11/30/05
Settling times are not production tested. Guaranteed by characterization.
Measured from full-scale step at VINP to FORCE output.
Test Conditions:
1. 15 pF load on output
2. input signal has 5 ns rise/fall time
3. tpd is defined as the difference between the time when the input crosses 1.5V to when the output
changes 10% (of the total change) from the initial voltage level. (see timing diagram below).
Measured from full-scale step at VINP to IVMON output.
Clamp activation/recovery time indicates the delay between when the clamps are actually engaged
or disengaged and when clamping is indicated with the comparator outputs.
Comparator Propagation Delay Measurements.
HiZ=1, MI/MV*=0, SELIPMU=1, input signal applied to FORCE/SENSE.
U
F
F
S
S
n
V
C
t i
F
R
R
O
D
R
R
R
R
=
R
=
f e
n a
n a
n a
n a
100%
50%
0%
DUTNH
DUTNL
C
R
F
F
n i
E
F
e g
e g
e g
e g
l l u
l l u
t i
P
P
S -
o i
: n i
: n i
S -
: D
: B
: C
: A
Output
Input
n
a c
a c
: s
e l
F
F
F
8
8
8
8
e l
S
S
S
0
0
0
m
V
V
V
V
C
0
0.8V
µ
m
o
R
R
R
r u
A
Tpd(+)
A
µ
a t l
A
e r
=
=
=
A
e g
t n
tpd
1
1
1
6
2
6
R
R
1
1.5V
2 .
2 .
2 .
n a
n a
5
5
5
100%
e g
e g
10%
V
V
V
(
(
(
V FORCE/SENSE
38
2V
m
m
m
x a
x a
x a
1.5V
u s
u s
u s
p p
p p
p p
tpd
e i l
e i l
e i l
2
) s
) s
) s
100%
@
@
c A
SR = 1V/ s
10%
o r
e Z
F
l l u
s s
o r
IVMIN, IVMAX
S -
E
C
t n
a c
Tpd(–)
r u
e r i
e l
e r
E4237/E4257/E4287
t n
C
C
r u
r u
e r
e r
t n
t n
R
n a
e g
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