參數(shù)資料
型號: AD5522JSVUZ
廠商: Analog Devices Inc
文件頁數(shù): 35/64頁
文件大小: 0K
描述: IC PMU QUAD 16BIT DAC 80-TQFP
產(chǎn)品變化通告: Improve FI ac crosstalk
設(shè)計資源: Parametric Measurement Unit and Supporting Components for PAD Appls Using AD5522 and AD7685 (CN0104)
標準包裝: 1
類型: 每引腳參數(shù)測量單元(PPMU)
應(yīng)用: 自動測試設(shè)備
安裝類型: 表面貼裝
封裝/外殼: 80-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 80-TQFP-EP(12x12)
包裝: 托盤
AD5522
Data Sheet
Rev. E | Page 40 of 64
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).
The forced voltage can be calculated as follows:
Forced Voltage at DUT = VOUT
VOUT = 4.5 × VREF × (DAC_CODE/216) (3.5 × VREF ×
(OFFSET_DAC_CODE/216)) + DUTGND
where:
VOUT is the voltage of the FIN DAC (see the DAC Levels
section).
DUTGND
MEASVHx
DUT
RSENSE
(UP TO
±80mA)
RSENSE
EXTMEASIHx
EXTMEASILx
FOHx
EXTFOHx
CFFx
FIN
FORCE
AMPLIFIER
INTERNAL RANGE SELECT
(±5A, ±20A, ±200A, ±2mA)
DAC
+
+
×5 OR
×10
×1
AGND
MEASURE VOLTAGE AMPLIFIER
MEASOUTx
VMID TO
CENTER
I RANGE
06197-
033
×1 OR
×0.2
4k
2k
4k
Figure 54. Forcing Voltage, Measuring Current
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