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7.8
JRC NJW1141 Audio Processor
The NJW1141 is a sound processor includes all of the
functions required to process the audio signal for TV, such as
tone control, balance, volume, mute, and AGC functions. All of
the internal status and variables are controlled by I
interface.
7.9
ST TL062 Low power J-FET dual op-amp
The TL062is an high speed J-FET input dual operational
amplifier. This J-FET input operational amplifiers incorporates
well matched, high voltage J-FET and bipolar transistors in a
monolithic integrated circuit. The device features high slew
rates, low input bias and offset currents, and a low offset
voltage temperature coefficient.
7.10 YAMAHA YDA148 Audio Amplifier
YDA148 (D-510) is a high-efficiency digital audio power
amplifier IC with the maximum output of 2 × 15 W. The
YDA148 has a "Pure pulse direct speaker drive circuit" that
directly drives speakers while reducing distortion of pulse
output signal and reducing noise on the signal, which realizes
the highest standard low distortion rate characteristics and low
noise characteristics among digital amplifier ICs in the same
class. In addition, supporting filterless design allows circuit
design with fewer external parts to be realized depending on
use conditions. The YDA148 features a power limit function, a
non-clip function, and DRC (dynamic range control) function
that were developed by Yamaha original digital amplifier
technology. The YDA148 has overcurrent protection for
speaker output terminals, high temperature protection, and low
supply voltage malfunction prevention.
7.11 Sipex SP3243 RS-232 transceiver
The SP3243 transceivers meet the EIA/TIA-232 and ITU-T
V.28/V.24 communication protocols. Generates 5.5V RS-232
voltage levels from a single +3.0V to +5.5V power supply and
operates at a data rate of 120 kbps fully loaded. The SP3243
devices feature AUTO ON-LINE® circuitry automatically wakes
up from a 1 μA shutdown. It occurs after a RS-232 cable being
disconnected. Under this condition, the internal charge pump
and the drivers will be shut down. Otherwise, the system
automatically comes on-line.
7.12 Intersil ISL29010 Light-to-Digital output sensor
The ISL29010 is an integrated light sensor with I
has an internal signed15-bit integrating type ADC designed
based on the charge-balancing conversion technique. This
ADC is capable of rejecting 50 Hz and 60 Hz flicker caused by
artificial light sources. The lux range select feature allows the
user to program the lux range for optimised counts/lux. In
normal operation, power consumption is typically 250 μA.
Furthermore, a power-down mode can be controlled by
2
software via the I
C interface, reducing power consumption to
less than 1 μA. Designed to operate on supplies from 2.5 V to
3.3 V, the ISL29010 is specified for operation over the −40°C to
+85°C ambient temperature range.
Circuit Descriptions
2
C bus
2
C interface. It
QCG1.0S LA
7.
EN 21
2009-Feb-20
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