Toshiba 29VH27E, Service Manual

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22
63 22 - 19 14 NC LV Not connected
64 21 19 18 13 NC LV Not connected
65 20 18 17 12 I2S_DA_IN2 IN LV I
2
S2-data input
66 19 17 16 11 DVSS X Digital ground
- - - 15 - DVSS X Digital ground
- - - 14 - DVSS X Digital ground
67 18 16 13 10 DVSUP X Digital power supply 5V
- - - 12 - DVSUP X Digital power supply 5V
- - - 11 - DVSUP X Digital power supply 5V
68 17 15 10 9 ADR_CL OUT LV ADR clock
14.14.TL431
14.14.1.Description
The TL431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 1 % band gap
reference. TL431 acts as an open-loop error amplifier with a 2.5V temperature compensation reference.
The TL431 thermal stability, wide operating current (150mA) and temperature range (0.to 105.makes it
suitable for all variety of application that are looking for a low cost solution with high performance. The
output voltage may be adjusted to any value between VREF and 36 volts with two external resistors.
The TL431 is operating in full industrial temperature range of 0°C to 105°C. The TL431 is available in
TO-92, SO-8, SOT-89 and SOT23-5 packages.
14.14.2.Features
• Trimmed Band gap to 1%
• Wide Operating Current
1mA to 150mA
• Extended Temperature Range 0. °C to 105.°C
• Low Temperature Coefficient 30 ppm /°C
• Offered in TO -92, SOIC, SOT-89, SOT-23-5
• Improved Replacement in Performance for TL431
• Low Cost Solution
14.14.3.Pin Configurations
14.15.TDA9885/86
14.15.1.Introduction
The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal
PLL. The TDA9886 is an alignment-free multi standard (PAL, SECAM and NTSC) vision and sound IF signal
PLL. Both devices can be used for TV, VTR, PC and set-top box applications.
14.15.2.Features
•
5 V supply voltage
•
Gain controlled wide-band Vision Intermediate Frequency (VIF) amplifier (AC-coupled)
•
Multistandard true synchronous demodulation with active carrier regeneration (very linear demodulation,
good intermodulation figures, reduced harmonics, excellent pulse response)
•
Gated phase detector for L/L accent standard
•
Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free; frequencies switchable for all
negative and positive modulated standards via I 2 C-bus
•
Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75 and 58.75 MHz