CXA3668N Datasheet, PDF (1/16 Pages) Sony Corporation – Reception Analog Signal Processor IC for Infrared Space Digital Audio Communication

CXA3668N
Reception Analog Signal Processor IC for Infrared Space Digital Audio Communication
Description
The CXA3668N is an IC that performs reception side
analog signal processing for optical communication
in combination with an infrared photodiode within a
Digital Infrared Audio Transmission (DIAT) system.
This IC incorporates a low noise trans-conductance
amplifier (I/V amplifier) that converts the optical
current from the photodiode into a voltage and
amplifies it, an AGC amplifier, a low-pass filter, band-
pass filters, and an output amplifier.
The band-pass filters are used to separate the
desired signal and the interfering signal. This chip
has the two types of Full (3 to 6MHz) and Half (3 to
4.5MHz) band-pass filters, and these can be
switched according to the application.
• Full: Full-band width (3 to 6MHz)
• Half: Half-band width (3 to 4.5MHz)
24 pin SSOP (Plastic)
Features
• Wide dynamic range
• On-chip I/V amplifier
• On-chip output filter
• Filter band switching pin
• Surface mounting package (24-pin SSOP)
Applications
• Infrared headphones
• Infrared speakers
Structure
Bi-CMOS IC
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage
VCCI, VCC2, VCCS, VCCO
3.3
V
• Storage temperature
Tstg
–55 to +150 °C
• Allowable power dissipation PD
400
mW
Recommended Operating Conditions
• Supply voltage
VCCI, VCC2, VCCS, VCCO 2.3 to 2.7
V
• Operating temperature
Topr
–40 to +85 °C
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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E04244-PS