U2538B Datasheet, PDF (2/9 Pages) ATMEL Corporation – IR RECEIVER FOR DATA COMMUNICATION

Block Diagram
V_S
R_F0
R_F
BIAS
IN
BPF
TIA
CGA
AGC
ATC
A_GND
C_AGC
C_AGC
V_S
+ ^{Comp 1}
-
Vth
&
+
- _{Comp 2}
DEM
dt
INT
ST
100 kW
OUT
D_GND
TIA
CGA
BPF
AGC
Transimpedance amplifier
Controlled gain amplifier
Bandpass filter
Automatic gain control
ATC
DEM
INT
ST
Automatic threshold control
Demodulator
Integrator
Schmitt trigger
2 U2538B
4717A–IRRC–05/03