參數(shù)資料
型號(hào)： TZA1026
廠商： NXP Semiconductors N.V.
英文描述： Data amplifier and laser supply circuit for CD audio and video optical systems ((ADALASAuto)(應(yīng)用在CD音頻和視頻光學(xué)系統(tǒng)中的數(shù)據(jù)放大器和激光電源電路)
中文描述： 數(shù)據(jù)放大器和激光CD音頻和視頻（（ADALASAuto）（應(yīng)用在CD光學(xué)系統(tǒng)的供電線路音頻和視頻光學(xué)系統(tǒng)中的數(shù)據(jù)放大器和激光電源電路）
文件頁(yè)數(shù)： 12/20頁(yè)
文件大?。?/td> 134K
代理商： TZA1026
1998 Oct 30
2
Philips Semiconductors
Product specication
Data amplier and laser supply circuit for CD
audio and video optical systems (ADALASAuto)
TZA1026
FEATURES
Suitable for automotive applications
Supports a wide range of voltage output mechanisms
RF amplifier designed for audio and video applications
with data rates up to a maximum of n = 4 times speed
Programmable RF gain for CD-Audio/Video (CD-A/V)
and CD-Read/Write (CD-R/W) discs
Adjustable equalizer for n = 1 or n = 2 times speed
Fully Automatic Laser Power Control (ALPC) including
stabilization plus a separate laser supply voltage for
power efficiency
Adjustable current range of ALPC output
Automatic N- or P-substrate monitor diode selection
Adjustable laser bandwidth and laser switch-on current
slope using external capacitor
Protection circuit to prevent laser damage due to laser
supply voltage dip
Optimized interconnection between data amplifier and
Philips’ digital signal processor CD10Auto (SAA7326)
Wide supply voltage range
Power-down switch to reduce power consumption
during standby
Wide temperature range
Low power consumption.
GENERAL DESCRIPTION
The TZA1026 is a data amplifier and laser supply circuit for
voltage output mechanisms found in a wide range of audio
and video CD systems. The device contains an RF
amplifier and an automatic laser power control circuit.
The preamplifier forms a versatile, programmable
interface for voltage output CD mechanisms to the Philips’
digital signal processor CD10Auto (SAA7326).
The RF bandwidth allows this device to be used in CD-A/V
and CD-R/W applications with a data rate up to a
maximum of n = 4 times speed. The RF gain can be
adapted for CD-A/V discs or CD-R/W discs by means of
the gain select signal.
The equalizer can be adjusted for n = 1 or n = 2 times
speed with the equalizer/speed select signal. For n = 4
times speed the RF is not equalized.
The TZA1026 can be adapted to a wide range of voltage
output mechanisms by means of external resistors.
The ALPC circuit will maintain control over the laser diode
current. With an on-chip reference voltage generator, a
constant and stabilized output power is ensured
independent of ageing. The ALPC can accommodate
N- or P-substrate monitor diodes.
A separate supply voltage connection for the laser allows
the internal power dissipation to be reduced by connecting
a low voltage supply. The laser output current range can
be optimized to fit the requirements of the laser diode by
means of one external resistor. When a DC-to-DC
converter is used, in combination with the control loop of
the ALPC, the adjustable output current range provides
the possibility to compensate for the extra gain a DC-to-DC
converter introduces in the control loop.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TZA1026T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Data amplifier and laser supply circuit for CD audio and video optical systems ADALASAuto
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TZA1027 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Analog current buffer for CD-R and CD-RW systems
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