AD5522JSVD AD [Analog Devices], AD5522JSVD Datasheet - Page 22

• Manufacturer Part Number: AD5522JSVD
• Description: Quad Parametric Measurement Unit With Integrated 16-Bit Level Setting DACs
• Manufacturer: AD [Analog Devices]

AD5522
SYSTEM FORCE SENSE SWITCHES
Each channel has switches to allow connection of the force
(FOHx) and sense (MEASVHx) lines to a central PMU for
calibration purposes. There is one set of SYS_FORCE and
SYS_SENSE pins per device. For calibration purposes, it is
recommended the SYS_FORCE path be connected individually
to each PMU channel, FOH path.
TEMPERATURE SENSOR
An on board temperature sensor monitors temperatures and in
the event of the temperature exceeding a factory defined value,
(130°C) or a user programmable value, the device will protect
itself by shutting down all channels and will flag an alarm
through the latched open drain TMPALM pin. Alarm status
may be readback from the Alarm Status Register or the PMU
registers where latched and unlatched bits tell if an alarm has
occurred and whether the temperature has dropped below the
set alarm temperature.
MEASOUT Function
MV
MI
GAIN0 = “0”
GAIN0 = “1”
CURRENT MEAS GAIN = 10
CURRENT MEAS GAIN = 5
Table 10. MEASOUT Output Ranges
Rev. PrM | Page 22 of 48
GAIN1 = “0”V
MEASOUT Gain = 1
±VDUT (up to 11.25V)
±V
± V
RSENSE
RSENSE
MEASURE OUTPUT (MEASOUT)
The measured DUT voltage or current (voltage representation
of DUT current) is available on MEASOUT (0-3) with respect
to AGND. The default MEASOUT range is the forced voltage
range for voltage measure and current measure (nominally
±11.25V, depends on reference voltage and offset DAC) and
includes some over range to allow for offset correction. The
serial interface allows the user to select another MEASOUT
range of V
to be used. Each PMU channel MEASOUT line may be made
high impedance via the serial interface.
When using low supply voltages, ensure that there is sufficient
headroom and footroom for the required force voltage range.
The Offset DAC also directly offsets the MEASURE output
voltage level, but only when GAIN1 = 0.
X 10 = up to ±11.25V
X 5 = up to ±5.625
REF
= 5V
REF
to AGND, allowing for a smaller input range ADC
Preliminary Technical Data
GAIN1 = “1”
0 to 4.5V
MEASOUT Gain = 1/5
0 to 2.25V
0
to
4.5VREF
5