In page 4 pcm1792a datasheet:
ANALOG OUTPUT
Gain error: –6 ±2 6 % of FSR
Gain mismatch:channel-to-channel –3 ±0.5 3 % of FSR
Bipolar zero error: At BPZ –2 ±0.5 2 % of FSR
Output current Full scale (0 dB): 7.8 mA p-p
Center current :At BPZ –6.2 mA
What is the meaning of this center current?thank you!