E4257ALPT Semtech, E4257ALPT Datasheet - Page 21
E4257ALPT
Manufacturer Part Number
E4257ALPT
Description
Manufacturer
Semtech
Datasheet
1.E4257ALPT.pdf
(39 pages)
Specifications of E4257ALPT
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
Use of Switches for Super Voltage (E4287 ONLY)
An application of the E42X7 switches and switch matrices
is to connect their PMU and an external PMU to a DUT
pin and to switch a pin electronics driver’s levels to a
Super Voltage as shown below.
In many applications, the external PMU’s range may need
to exceed that of a pin’s PMU (a pin’s PMU range may be
restricted in order to save power). For example, VEE =
–5.0V, VCC = +8.25V, SVCC = +14.75V would permit
a PMU range of –3.25V, +6.5V, super voltage of +12V,
and an external PMU range of –4.75V, +14.5V
(SELIPMU = 0).
TEST AND MEASUREMENT PRODUCTS
Application Information (continued)
2005 Semtech Corp. / Rev. 5, 11/30/05
ADC
IVMON
DVHH
NOTE: Switch impedance is shown for typical value
DVH
DVL
SYSTEM PMU
PPMU
SELEPMU
SELIPMU
S
S
F
F
SELC
E4287
1K
1K
40
1K
40
1K
1K
1K
21
DVL
OUTPUT WAVEFORM:
DVH
E4237/E4257/E4287
1000 pF
1000 pF
DRIVER
DVHH (Super Voltage)
E4287 ONLY
PIN'S
DUT PIN
www.semtech.com