Other Parts Discussed in Thread: AFE4400
Differences between AFE4400 and AFE4490
1. TIAGAIN [D10: D0] in AFE4490 is a receiving circuit parameter of LED1 (IR).
TIA_AMB_GAIN [D10: D0] is a receiving circuit parameter of LED2 (RED).
TIA_AMB_GAIN [D10: D0] in AFE4400 is the receiving circuit parameters of LED1 (IR) and LED2 (RED).
LED1 (IR) and LED2 (RED) parameters in AFE4400
are not able to be set individually. Is this okay ?
2. Are CF_LED1, CF_LED2, RFLED1, and RF_LED2 set CF and RF at Figure55. Receive Front-End ?
Figure55. Receive Front-End is in AFE4490 spcification sheet.
3. Are STG2GAIN1(for LED1) and STG2GAIN2(for LED2) setting the RG of Stage2-Gain AMP in Figure 55.?
4. When the bit of TIAGAIN_STAGE2EN1 in AFE4490 is "0",
is the STAGE2 of LED1 receiving circuit bypassed ?
When the bit of TIA_AMB_GAIN_STAGE2EN2 is "0",
is the STAGE2 of LED2 receiving circuit bypassed ?