measurement

4>. The 30 kHz LPF (shown in figure 5) is required even if the analyzer has

an internal LPF

Component Recommended

Due to the weak noise immunity of the single-ended input application, the

differential input application should be used whenever possible. The typical

component values are listed in the table:

150 k

3.3 nF

1 uF

mismatch.

(2)

Use 1% tolerance resistors or better to keep the performance optimized,

impedance nodes.

1

150

2

Eq

V

V

R

k

Gain

I













Ω

×

=

The input resistor matching directly affects the CMRR, PSRR, and the second

harmonic distortion cancellation.

If the input signal is not biased within the recommended common-mode input

range in differential input application (shown in Figure3), or in a single-ended input

application (shown in Figure4), the input coupling capacitors are required.

( )

2

2

1

Eq

Hz

C

R

f

I

I

C

⋅

⋅

=

π

1µF, placed as close as possible to the device VDD pin.

Leshan Radio Co ., Ltd

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