Product category:
Analogue and Mixed Signal ICs
News Release from: Zarlink Semiconductor | Subject: ZL40120/21/22/23
Edited by the Electronicstalk Editorial
Team on 05 May 2003
Op amps optimise video performance
Four new broadband operational amplifier chips achieve industry-leading performance levels for driving high-resolution video signals.
Zarlink Semiconductor has unveiled four broadband operational amplifier chips that achieve industry-leading performance levels for driving high-resolution video signals Zarlink's ZL40120/21/22/23 chips post the highest ratings in their class for bandwidth, linearity, and stability, while supporting high-speed operation and consuming low levels of power
This article was originally published on Electronicstalk on 7 Feb 2001 at 8.00am (UK)
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Zarlink's ZL40120/21/22/23 devices amplify high-resolution video signals at high speeds with very low distortion, while minimising power consumption.
The chips support higher bandwidths - up to 450MHz - with greater signal stability than any other competing, low-power operational amplifiers.
They are well suited for driving high-resolution video signals in PCs (personal computers), laptops, high-definition broadcast and surveillance systems, professional cameras, medical imaging systems, and instrumentation.
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"Zarlink's ZL40120 series of video drivers meets designer demand for high-speed chips that cleanly amplify wide-bandwidth signals without drawing much power", said Peter Minett, Product Line Marketing Manager, High-Performance Analog group, Zarlink Semiconductor.
"The devices feature innovative process and design techniques that deliver best-in-class performance in areas that count the most for video equipment".
Zarlink's newest operational amps are built in the company's world-class HJV (high-performance, process version J, high-voltage) process, a complementary silicon bipolar technology that maximises performance in high-voltage, high-speed analogue devices.
All four of Zarlink's new amps feature advanced current-feedback designs with balanced architectures.
The ZL40121/23 devices are dual-matched, with two amps on each chip.
The ZL40120/22 devices are quad-matched, with four amps on each.
In closed-loop circuits with unity gain, driving 100ohm loads, the ZL40122/23 amps support bandwidths of up to 450MHz and draw only 5.2mA/A of standby current.
Their slew rates, or operating signal edge speeds, are very fast, measuring 1500V/us.
Even at these bandwidths and speeds, the ZL40122/23 amps post exceptional ratings for linearity and stability.
At frequencies of 1MHz, with 2V peak-peak signals, driving a 100ohm load, the devices have total harmonic distortion of only -83dB, the best-in-class rating.
Their differential gain rating is also best in class at 0.015%.
The mix of high-performance technical capabilities delivered by the ZL40122/23 devices make them excellent choices for driving high-resolution computer monitors based on VESA's (Video Electronics Standards Association) 1280 x 1024pixel SXGA (super extended graphics array) specification.
Zarlink's ZL40120/21 chips also achieve the highest bandwidth rating in their power class.
In closed loops with unity gain and 100ohm loads, they deliver 280MHz and use only 3.3mA/A of standby current.
With these ratings, and their 1100V/us slew rates, they are optimised for driving 1024 x 768pixel XGA monitors.
The output drive currents of the ZL40120/21 are 65mA, well above any competing devices.
The devices have excellent linearity, as evidenced by best-in-class ratings for total harmonic distortion and differential gain.
They are also very stable.
In open-loop configurations, the amps have industry-leading margins for phase and gain, setting the stage for closed-loop amp circuitry with clean transient characteristics.
Zarlink's newest analogue amps are highly tolerant to stress and power surges.
Supply and output pins withstand more than 2kV of ESD, and input pins more than 1.2 kV.
All pins pass the JEDEC latch-up test of +/-100mA for 100ms.
This surge-tolerant performance saves designers board space by minimising the need for external protection components.
Zarlink's ZL40120 series of operational amplifiers is now in production.
All four devices are offered in SOIC packages with industry-standard pinouts, enabling them to fit seamlessly into existing equipment designs.
The ZL40121/23 dual amps are in 8-pin SOIC packages, and the ZL4020/22 quad devices are in 14-pin SOIC packages.
In 1000-off quantities, the ZL40121/23 amps are priced at US$1.65, and the ZL40120/122 amps at US$2.45.
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