AD5522JSVD datasheet(26/48 Pages) AD

Il numero della parte	AD5522JSVD

Spiegazioni elettronici	Quad Parametric Measurement Unit With Integrated 16-Bit Level Setting DACs

PDF	48 Pages

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Produttore elettronici	AD [Analog Devices]

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26 / 48 page

AD5522

Preliminary Technical Data

Rev. PrM | Page 26 of 48

CIRCUIT OPERATION

FORCE VOLTAGE, FV

Most PMU measurements are performed while in force voltage

and measure current mode, for example, when the device is

used as a device power supply, or in continuity or leakage

testing. In the force voltage mode, the voltage forced is mapped

directly to the DUT. The voltage measure amplifier completes

the loop giving negative feedback to the forcing amplifier. See

Figure 24.

Forced Voltage at DUT = VFIN

Where:

VFIN = Voltage of the FIN DAC, See VOUT for DAC levels.

DUTGND

MEASVH

DUT

Rsense

up to

(64mA)

EXTMEASIH

EXTMEASIL

FOH

EXTFOH

CFF

FIN

INTERNAL RANGE SELECT

(5uA, 20uA, 200uA, 2mA)

Rsense

DAC

x5 or x10

AGND

MEASOUT

x1/x0.2

10k

Ω

OFFSET DAC

BIAS TO

CENTER

IRANGE

Figure 24. Forcing voltage, measuring current

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