E4237ALP Semtech, E4237ALP Datasheet - Page 13

• Manufacturer Part Number: E4237ALP
• Manufacturer: Semtech

Specifications of E4237ALP

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

SELC is a digital input pin that is used to control the analog
mux section of the E4287 and select between the normal
logic level used in an application and the super voltage
level so that the desired pin electronics driver levels are
channeled through the E4287 to the pin driver. SELC
functionality is described in Table 6.
DISMON is a digital input pin that is used to select the
desired PMU measurement channel that appears at
IVMON, or to place the IVMON pin in a high impedance
state. DISMON functionality is described in Table 7.
IVMON
IVMON is an analog output pin which displays the
measured parameter (i.e. compliance voltage or
compliance current) from the channel selected using
DISMON. The relationship between DISMON, MI/MV*,
and the parameter displayed at IVMON is illustrated in
Table 7.
TEST AND MEASUREMENT PRODUCTS
Circuit Description (continued)
S
2005 Semtech Corp. / Rev. 5, 11/30/05
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Table 6. Analog Mux Functionality (E4287 only)
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Table 5. SELEPMU Functionality
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FORCE/RF/SENSE
FORCE is an analog output pin through which a
programmed voltage or current can be applied to the DUT.
SENSE is a high impedance analog input that is also
connected to the DUT and provides feedback for the Force
amplifier (see Figure 1) in “force voltage” mode and
measures DUT compliance voltage measurement in the
“measure voltage” mode.
RF is an analog output pin through which a programmed
voltage or current can be supplied to the DUT. Since there
is no disconnect switch between the FORCE amplified
output and the RF pin, using the RF pin as the PMU output
offers extended output voltage capability and full-scale
current (note that on-chip termination mode only works
when using the FORCE pin).
Force Voltage (FV) Mode
In the FV mode (FV/FI* = 1), the force amplifier (see
Figure 2) is configured as a unity gain buffer.
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Table 7. IVMON Functionality
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