VCA 5807 dB/V Gain Linearity

jinhu wu

Other Parts Discussed in Thread: VCA5807

Hi, all

I want to know the dB/V Gain Linearity and Typical Gain Error Plot of Control Voltage vs Gain Error about vca5807.

But I can not find anything about that from data sheet of vca5807. The data sheet only says the Device-to-Device Gain Matching and Channel-to-Channel Gain Matching.

over 6 years ago

0 Praveen Aroul over 6 years ago

TI__Mastermind 49596 points

Hello Jinhu,

Please refer to Figure 4, 5 and 6 in the datasheet for the histogram of the gain error across the control voltages.

0 jinhu wu over 6 years ago in reply to Praveen Aroul

Intellectual 800 points

Figure 4, 5 and 6 are Gain Matching Histogram of channel for VCNTL = 0.3, 0.6, 0.9.

How to calculate the gain error across the control voltages?

Can you provide a Figure as Figure 2 of in the datasheet, but for gain error across the control voltages?

Because the Figure 2 is too small, I can not see the gain error detail, the curve is almost linear, but acturally not.

0 jinhu wu over 6 years ago in reply to jinhu wu

Intellectual 800 points

Can you give me any suggestion?

0 Praveen Aroul over 6 years ago

TI__Mastermind 49596 points

Basically, the gain error is a random number, within a +/-1dB range from the nominal value. We can’t calculate and predict it.

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VCA 5807 dB/V Gain Linearity