AD5522JSVDZ Analog Devices Inc, AD5522JSVDZ Datasheet - Page 40

• Manufacturer Part Number: AD5522JSVDZ
• Description: IC, DAC, 16BIT, QFP-80
• Manufacturer: Analog Devices Inc

Specifications of AD5522JSVDZ

• Resolution (bits): 16bit
• Input Channel Type: Serial
• Supply Voltage Range - Digital: 2.3V To 5.25V
• Supply Current: 36mA
• Digital Ic Case Style: QFP
• No. Of Pins: 80
• Data Interface: LVDS, Serial
• Design Resources: Parametric Measurement Unit and Supporting Components for PAD Appls Using AD5522 and AD7685 (CN0104)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD5522
CIRCUIT OPERATION
FORCE VOLTAGE (FV) MODE
Most PMU measurements are performed in force voltage/measure
current (FVMI) mode, for example, when the device is used as a
device power supply, or in continuity or leakage testing. In force
voltage (FV) mode, the voltage forced is mapped directly to the
DUT. The measure voltage amplifier completes the loop, giving
negative feedback to the forcing amplifier (see Figure 54).
MEASOUTx
×1 OR
×0.2
VMID TO
I RANGE
CENTER
DAC
MEASURE VOLTAGE AMPLIFIER
AGND
Figure 54. Forcing Voltage, Measuring Current
FIN
×5 or ×10
×1
+
–
+
–
AMPLIFIER
+
–
FORCE
Rev. D | Page 40 of 64
+
–
+
–
+
–
+
–
(±5µA, ±20µA, ±200µA, ±2mA)
The forced voltage can be calculated as follows:
where:
VOUT is the voltage of the FIN DAC (see the DAC Levels
section).
INTERNAL RANGE SELECT
R
Forced Voltage at DUT = VOUT
VOUT = 4.5 × VREF × (DAC_CODE/2
(OFFSET_DAC_CODE/2
SENSE
2kΩ
4kΩ
4kΩ
EXTMEASIHx
MEASVHx
DUTGND
EXTFOHx
CFFx
FOHx
EXTMEASILx
16
)) + DUTGND
DUT
16
) − (3.5 × VREF ×
R
(UP TO
±80mA)
SENSE