16-bit, 160Msps ADC Delivers 77dB SNR for High Performance Communications Systems & Instrumentation
Linear Technology Corporation announces the LTC2209, a 16-bit 160Msps high performance high-speed Analog to Digital Converter (ADC) for leading edge communications equipment and instrumentation applications. The LTC2209 extends the sampling frequency of the 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.
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 randomizer that dramatically reduces unwanted tones caused by digital feedback. The flexible digital outputs can be run as CMOS or LVDS.
16-Bit, 160Msps ADC
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 1.5VP-P. 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 9mm × 9mm QFN package, ensuring low power consumption of 1450mW without the need for heat sinking. 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 stabilizer for maintaining the ADC's performance over varying duty cycles. The LTC2209 can accept high frequency, wide dynamic range signals, offering a wide analog input bandwidth of 700MHz.
The LTC2209 family includes speed grades of 160Msps, 130Msps, 105Msps, 80Msps, 65Msps, 40Msps, 25Msps and 10Msps, all with superior SFDR and SNR performance. In addition to the 16-bit LTC2209, the pin-compatible LTC2209-14 14-bit version will also be available. (Samples and demo boards for the LTC2209 are available from our website). The LTC2209 is available today in both commercial and industrial temperature grades, and is competitively priced at $72.50 each in 1,000-piece quantities.
The following provides a table of the entire LTC2209 product family. All parts can be ordered in optional lead-free packages for RoHS compliance.
Part Number Resolution Speed Power Availability Price (1k) LTC2209 16-Bit 160Msps 1450mW Nov $72.50 LTC2208 16-Bit 130Msps 1250mW Now $65.00 LTC2207 16-Bit 105Msps 850mW Now $56.67 LTC2206 16-Bit 80Msps 640mW Now $48.33 LTC2205 16-Bit 65Msps 450mW Now $43.33 LTC2204 16-Bit 40Msps 350mW Now $35.00 LTC2203 16-Bit 25Msps 220mW Now $30.00 LTC2202 16-Bit 160Msps 10mW Now $25.00 LTC2209-14 14-Bit 160Msps 1450mW Dec $60.00 LTC2208-14 14-Bit 130Msps 1250mW Now $55.00 LTC2207-14 14-Bit 105Msps 850mW Now $45.00 LTC2206-14 14-Bit 80Msps 640mW Now $33.00 LTC2205-14 14-Bit 65Msps 450mW Now $28.00
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