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LA78040 Pinout – TV, CRT Display Vertical Output IC – Sanyo

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This is one of the Display Vertical Output IC types.

Part Number: LA78040

Function: TV and CRT Display Vertical Output IC with Bus Control Support

Package: TO-220-7H Type

Manufacturer: Sanyo

See the preview image and the PDF file for more information.

Image

la78040-vertical-output

Description

The LA78040 is a vertical deflection output IC for high image quality TV and CRT displays that supports the use of a bus control system signal-processing IC. The sawtooth waveform from the bus control system signal-processing IC can directly drive the deflection yoke (including the DC component). Color TV vertical deflection system adjustment functions can be controlled over a bus system by connecting the LA78040 to a Sanyo LA768X series or LA769XX series bus control system signal-processing IC.

Key Architecture

  • Vertical deflection power amplifier
  • Direct yoke drive capability (including DC component)
  • Integrated pump-up (bootstrap) circuit
  • Thermal protection included

Core Features

  • Built-in pump-up circuit → improves output swing and efficiency
  • Capable of directly driving vertical deflection yoke
  • Compatible with bus-controlled video processors (e.g., LA76931)
  • Thermal shutdown protection for reliability
  • Supports high-quality CRT image performance

LA78040 Pinout

la78040-pinout

Function

1. Built-in pump-up circuit for low power dissipation.
2. Vertical output circuit.
3. Thermal protection circuit.

Maximum Ratings at Ta = 25°C

1. Pump-up block supply voltage (+B2 max) : 34 V
2. Output block supply voltage (+B6 max) : 70 V
3. Allowable power dissipation (Pd max) : 9 W
4. Deflection output current (I5 max) : -1.5 to +1.5 Ap-o
5. Thermal resistance (θj-c) : 3 °C /W
6. Operating temperature (Topr) : -20 to +85 °C
7. Storage temperature (Tstg) : -40 to +150 °C

LA78040 Application Circuit ( Single Power Supply )

la78040-circuit

Design Notes (Critical Points)

  • Heat sink is mandatory due to power dissipation
  • Pump-up capacitor value affects vertical amplitude
  • Ensure proper grounding to avoid vertical jitter
  • Yoke impedance must match IC capability
  • Thermal protection should not be triggered in normal operation

Advantages

  • High integration → fewer external components
  • Stable and precise vertical deflection
  • Compatible with digital bus-controlled systems
  • Built-in protection improves reliability

Typical Applications

  • CRT televisions
  • CRT monitors
  • Video display systems using analog deflection

Related / Compatible ICs

  • LA76931 (video/signal processor)
  • LA76810 / LA76818 series
  • TDA3653 / TDA8172 (alternative vertical output ICs)

LA78040 Datasheet

DAC8718 Datasheet PDF – 16Bit DAC

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The DAC8718 is a 16-bit, octal (8-channel) digital-to-analog converter (DAC) from Texas Instruments. It provides high-resolution voltage outputs with excellent linearity and low glitch energy.

Function: Octal, 16-Bit, Serial Input / DIGITAL-TO-ANALOG CONVERTER

Package: QFN-48 (7x7mm), TQFP-64 ( 10×10 mm ) Type

Manufacturer: Texas Instruments

Image

DAC8718 datasheet pdf

Description

The DAC8718 is a low-power, octal, 16-bit digital-to-analog converter (DAC). With a 5V eference, the output can either be a bipolar ±15V voltage when operating from dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply.

With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero-code and gain error. In addition, system level calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error with bipolar supplies, or ±1 LSB zero code/full-scale error with a unipolar supply, over the entire signal chain. The output range can be offset by using the DAC offset register.

Integrated Features: Internal registers, power-down modes, output clamp capability
The DAC8718 contains eight DAC channels and eight output amplifiers in a single package. Each channel consists of a resistor-string DAC followed by an output buffer amplifier. The resistor-string section is simply a string of resistors, each with a value of R, from REF-x to AGND.

This device is designed for industrial control, instrumentation, and precision signal generation applications where multiple high-accuracy analog outputs are required.

 

Pinout

DAC8718 pinout

 

Features

1. Number of Channels: 8 (octal DAC)

2. Output Range: Unipolar or bipolar voltage ranges (programmable via reference and configuration)

3. Interface: 4-wire SPI-compatible serial interface

4. Settling Time: Typically ~10 µs to 0.003% (full-scale)

5. Output Drive: Can directly drive moderate loads (industrial control signals)

6. Glitch Energy: Very low, improving signal integrity

7. Power Supply: Flexible supply options (analog and digital separated for noise performance)

 

Applications

1. Industrial Automation (actuator and process control)

2. Test and Measurement Equipment

3. Programmable Voltage Sources

4. Medical Instrumentation

5. Signal Generation (arbitrary waveform, audio, control signals)

6. Data Acquisition (DAQ) Systems

 

Related Devices

1. DAC7718 – 12-bit version (pin-compatible)

2. DAC8318 – 14-bit version

3. DAC8718 – 16-bit highest resolution model

Other data sheets are available within the file:

DAC-8718, DAC8718SPAG, DAC8718SPAGR, DAC8718SRGZR, DAC8718SRGZT

 

DAC8781 Datasheet


DAC8718 pdf