|
 |
acquisitionZONE Products for the week of May 5, 2008
Cadeka Microcircuits Says…
CLC2000: Four Families of High Performance Op Amps Offering 200 MHz to 550 MHz Bandwidth
Cadeka Microcircuits, the industry’s newest analog supplier, introduces 10 new high-performance amplifiers. Although the company name is new, the unique strength of Cadeka’s experienced analog designers and engineers began in the late 1980s. Cadeka’s engineering staff began working together at Comlinear Corporation, former supplier of industry leading high performance amplifier products. This is where the team discovered their passion for amplifiers and analog technology. Since those early years at Comlinear, the team’s experience grew through three separate company transitions, including assignments at: National Semiconductor, Kota Microcircuits, and most recently, Fairchild Semiconductor.
"Our company motto is Amplify the Human Experience," explains Gary Ross, Cadeka’s Chief Executive Officer. "Our focus is providing cost effective, leading edge analog products and solutions. Our amplifiers carry the Comlinear brand, illustrating our strong commitment to high-performance. We are amplifier experts and we are absolutely passionate about being successful with our core competency."
CLC2601/CLC3601/CLC4601 – Dual, Triple, and Quad 550MHz Amplifiers
The Comlinear CLCx601 family of dual-, triple, and quad-channel high-performance amplifiers utilize current feedback technology to provide 550MHz unity gain bandwidth, ±0.1dB gain flatness to 120MHz, and 1,500V/μs slew rate. These specifications combined with their large signal bandwidth, 200MHz at Gain = 2V/V and 4Vpp output, exceed the requirements of high-definition television (HDTV), set-top-box, and other multimedia applications. Offering over 50mA of output current, these amplifiers are also well suited for video distribution systems.
CLC2600/CLC3600/CLC4600 – Dual, Triple, and Quad 300MHz Amplifiers
Offering a lower power alternative to the CLCx601 family, the Comlinear CLC2600 (dual), CLC3600 (triple), and CLC4600 (quad) consume only 3.3mA of supply current per channel. With 300MHz of unity gain bandwidth, 1,300V/µs slew rate, 0.03%/0.04° differential gain/phase, and ±0.1dB gain flatness to 55MHz at 4Vpp, these amplifiers exceed the requirements for standard definition video requirements. Active filter applications, driving data converters, and instrumentation applications will also benefit from their high slew rate and wide bandwidth flatness.
CLC1603/CLC3603/CLC3613 – Single, Triple, and Triple with Disable 1.1mA Amplifiers
For power sensitive applications, such as portable video and instrumentation, the CLCx603 family of amplifiers consume only 1.1mA of supply current per channel. For additional power savings, the single-channel CLC1603 and triple-channel CLC3603 consume only 0.11mA per channel when disabled. The combination of 140MHz large signal bandwidth, 450V/µs slew rate, 100mA output drive, and low power consumption make these amplifiers well suited for many general purpose high-speed applications.
EN-Genius Says…
Is this déjà vu all over again? The takeover of Comlinear by National Semiconductor was one of the most bungled pieces of corporate work in our industry. A few staff left almost immediately, but most of the people who made the place really tick moved on later by taking some of the IP that National didn’t want and forming Kota Microelectronics. Kota was then bought by Fairchild, who really didn’t take great advantage of the amplifier experience that the team offered, even though they also acquired the best (video) bits of Micro Linear at the same time – but I guess they were more interested in the power products they inherited, although they were rather limited.
All the original Comlinear parts have now been ported to National’s own processes and the CLC named parts are “legacy” parts in their terminology. So now we have that original, core team rise once more like a phoenix with the Comlinear brand name back in hand, and back in play.
We know that this team understands high-frequency op amps, so we will look instead at the last offering in this announcement, a dual channel op amp that is designed for high output current delivery, the CLC2000.
The CLC2000 is a voltage feedback amplifier with standard pin-out. It is fully characterized in the data sheet for single +5 V and +12 V rails but it can also be run on dual rails up to ±7 V (absolute maximum). As a voltage feedback device the bandwidth will scale inversely with gain. With 5 V, the CLC2000 offers 422 MHz -3 dB bandwidth at G = 1 and 236 MHz with G = 2. With 12 V the two numbers are 510 MHz and 250 MHz. With 5 V the large signal bandwidth is 68 MHz with an output of 2 V and at 12 V it is 35 MHz with an output of 35 MHz. That seeming anomaly is reflected in the 0.1 dB flatness with 0.2 V output at 77 MHz for 5 V and 32 MHz for 12 V. Slew rate is 200 V/µs.
Second and third harmonic distortions are quoted for 25 Ω and 100 Ω loads at both 100 kHz and 1 MHz, with typical numbers in the -80 dBc range. Differential phase and gain numbers are quoted. Why on earth bother? Input voltage noise at 1 MHz is about 4.2 nV/√Hz and input current noise is 2.7 pA/√Hz. Crosstalk between channels is a very acceptable -63 dB at 5 MHz. The supply current is a typical 7 mA per channel.
The CLC2000 can sink and source 200 mA with an output voltage swing of 0.95 V to 4.05 V with a 5 V rail and into 25 Ω, and 0.75 V to 4.25 V with a 1 kΩ load. With a 12 V rail the respective numbers are 1.5 V to 10.5 V and 0.8 V to 11.2 V.
Typical input offset voltages are 0.3 mV while input offset current is 0.2 µA and the input bias current is 10 µA.
The ideal application for the CLC2000 is as an ADSL driver able, when using both channels as a differential driver, to put 18.8 V into a 25 Ω load, and as a video line driver for lengthy circuits. Cadeka is being very price competitive (maybe too much so), the players are a known quantity and the Comlinear brand is still well regarded. They will do well. They may regret their incorporation as an LLC at a later date when suitors come a-hunting.
The CLC2000 is in production in SOIC-8 priced at $0.87 in 1000-piece lots.
All the other parts in the release are also in production with the CLC2601 in SOIC-8 at $0.71; the CLC3601 in SOIC-14 at $1.03; the CLC4601 in SOIC-14 at $1.07; the CLC2600 in SOIC-8 at $0.70; the CLC3600 on SOIC-14 at $1.01; the CLC4600 in SOIC-14 at $1.05; the CLC1603 in SOT-23-6 at $0.31; the CLC3603 in SOIC-16 at $1.14; and the CLC3613 in SOIC-14 at $0.70.
Data Sheet
|
|
|
|
|
