AD8565(RevA) 查看數據表（PDF） - Analog Devices

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AD8565
(Rev.:RevA)

16 V Rail-to-Rail Operational Amplifiers

Analog Devices 

AD8565/AD8566/AD8567

Figure 5 shows the test circuit. Series capacitors and resistors

connected to the output of the op amp represent the load of the

LCD panel. The 300 Ω and 3 kΩ feedback resistors are used to

improve settling time. This test circuit simulates the worst-case

scenario for a VCOM. It drives a represented load that is connected

to a signal switched symmetrically around VCOM. Figure 6 displays

a scope photo of the instantaneous output peak current capability

of the AD856x family.

300⍀

8V

3k⍀

INPUT 0V TO 8V

SQUARE WAVE WITH

15.6␮s PULSEWIDTH

10⍀ 10⍀ 10⍀ 10⍀

4V

MEASURE

CURRENT

10nF

10nF

10nF

10nF

10⍀–20⍀

Figure 5. VCOM Test Circuit with Supply Voltage at 16 V

100

90

CH 2 =

100mA/DIV

CH 1 = 5V/DIV

10

0%

TIME – 2␮s/DIV

Figure 6. Scope Photo of the VCOM Instantaneous

Peak Current

–10–

REV. A

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