SNLS714 September 2022 DS320PR822
PRODUCTION DATA
The GAIN1 and GAIN0 pins can be used to set the overall data-path flat gain (DC and AC) of the DS320PR822 when the device is in Pin mode. The pin GAIN0 sets the Flat-Gain for channels 0-3 (Bank 0) and GAIN1 sets the same for channels 4-7 (Bank 1). In I2C mode each channel can be independently set. Table 7-2 provides flat gain control configuration settings. In the default recommendation for most systems will be GAIN1,0 = L4 (float) that provides flat gain of 0 dB.
The flat-gain and equalization of the DS320PR822 must be set such that the output signal swing at DC and high frequency does not exceed the DC and AC linearity ranges of the devices, respectively.
| Pin mode GAIN0/1 | I2C Modeflat_gain_2:0 | Flat Gain |
|---|---|---|
| L0 | 0 | −6 dB |
| L1 | 1 | −4 dB |
| L2 | 3 | −2 dB |
| L4 (float) | 5 | 0 dB (default recommendation) |
| L3 | 7 | +2 dB |