Product category:
Analogue and Mixed Signal ICs
News Release from: Linear Technology Corp | Subject: LTC2209
Edited by the Electronicstalk Editorial
Team on 23 November 2007
Speedy ADC simplifies receiver design
The LTC2209 is a 16-bit 160Msample/s high-performance high-speed ADC for leading-edge communications equipment and instrumentation applications.
The LTC2209 extends the sampling frequency of the Linear Technology LTC2208 family, offering a pin-compatible upgrade path for existing designs The LTC2209 has excellent signal to noise ratio (SNR) performance of 77.1dB and spurious free dynamic range (SFDR) of 100dB at baseband, consuming only 1450mW from a 3.3V supply
This article was originally published on Electronicstalk on 28 Jul 2004 at 8.00am (UK)
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The LTC2209 has two unique features that simplify receiver design and improve system performance.
The first is an internal transparent dither circuit that improves the ADC's SFDR response well beyond 100dBc for low level input signals.
The second feature is a digital output randomiser that dramatically reduces unwanted tones caused by digital feedback.
The flexible digital outputs can be run as CMOS or LVDS.
The LTC2209 also features a programmable gain amplifier (PGA) front end that eases the ADC driver output power requirements when driving the lower input range of 1.5V peak-peak.
This improves the distortion performance and power consumption of the driver with minimal impact on ADC noise performance.
The LTC2209 delivers an extensive feature set in a 9 x 9mm QFN package, ensuring low power consumption of 1450mW without the need for heatsinking.
Most importantly, total solution size with integrated bypass capacitance is less than half the nearest competitor and power consumption is equivalent to competitive parts sampling at half the speed.
Designed for ease of use, the LTC2209 requires only a single 3.3V supply for operation and comes with a clock duty cycle stabiliser for maintaining the ADC's performance over varying duty cycles.
The LTC2209 can accept high frequency, wide dynamic range signals, offering a wide analogue input bandwidth of 700MHz.
The LTC2209 family includes speed grades of 160, 130, 105, 80, 65, 40, 25 and 10Msample/s, all with superior SFDR and SNR performance.
In addition to the 16bit LTC2209, the pin-compatible LTC2209-14 14bit version is also available.
(Samples and demo boards for the LTC2209 are available from the Linear website).
The LTC2209 is available in both commercial and industrial temperature grades, and is competitively priced at US $72.50 each in 1000-piece quantities. Request a free brochure from Linear Technology Corp ...
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