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LTC2208 Dataheets PDF



Part Number LTC2208
Manufacturers Linear Technology
Logo Linear Technology
Description 16-Bit ADC
Datasheet LTC2208 DatasheetLTC2208 Datasheet (PDF)

FEATURES n Sample Rate: 130Msps n 78dBFS Noise Floor n 100dB SFDR n SFDR >83dB at 250MHz (1.5VP-P Input Range) n PGA Front End (2.25VP-P or 1.5VP-P Input Range) n 700MHz Full Power Bandwidth S/H n Optional Internal Dither n Optional Data Output Randomizer n LVDS or CMOS Outputs n Single 3.3V Supply n Power Dissipation: 1.25W n Clock Duty Cycle Stabilizer n Pin Compatible 14-Bit Version 130Msps: LTC2208 (16-Bit), LTC2208-14 (14-Bit) n 64-Pin (9mm × 9mm) QFN Package APPLICATIONS n Telecommunicatio.

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FEATURES n Sample Rate: 130Msps n 78dBFS Noise Floor n 100dB SFDR n SFDR >83dB at 250MHz (1.5VP-P Input Range) n PGA Front End (2.25VP-P or 1.5VP-P Input Range) n 700MHz Full Power Bandwidth S/H n Optional Internal Dither n Optional Data Output Randomizer n LVDS or CMOS Outputs n Single 3.3V Supply n Power Dissipation: 1.25W n Clock Duty Cycle Stabilizer n Pin Compatible 14-Bit Version 130Msps: LTC2208 (16-Bit), LTC2208-14 (14-Bit) n 64-Pin (9mm × 9mm) QFN Package APPLICATIONS n Telecommunications n Receivers n Cellular Base Stations n Spectrum Analysis n Imaging Systems n ATE L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. LTC2208 16-Bit, 130Msps ADC DESCRIPTION The LTC®2208 is a 130Msps, sampling 16-bit A/D converter designed for digitizing high frequency, wide dynamic range signals with input frequencies up to 700MHz. The input range of the ADC can be optimized with the PGA front end. The LTC2208 is perfect for demanding communications applications, with AC performance that includes 78dBFS Noise Floor and 100dB spurious free dynamic range (SFDR). Ultra low jitter of 70fsRMS allows undersampling of high input frequencies with excellent noise performance. Maximum DC specs include ±4LSB INL, ±1LSB DNL (no missing codes). The digital output can be either differential LVDS or single-ended CMOS. There are two format options for the CMOS outputs: a single bus running at the full data rate or demultiplexed buses running at half data rate. A separate output power supply allows the CMOS output swing to range from 0.5V to 3.6V. The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed with a wide range of clock duty cycles. TYPICAL APPLICATION VCM 2.2μF 1.25V COMMON MODE BIAS VOLTAGE 3.3V SENSE INTERNAL ADC REFERENCE GENERATOR OVDD AIN+ ANALOG INPUT AIN– + S/H AMP – 16-BIT PIPELINED ADC CORE CORRECTION LOGIC AND SHIFT REGISTER OUTPUT DRIVERS CLOCK/DUTY CYCLE CONTROL ENC + ENC – OGND VDD GND PGA SHDN DITH MODE LVDS RAND ADC CONTROL INPUTS 0.5V TO 3.6V 1μF OF CLKOUT D15 • • • D0 CMOS OR LVDS 1μF 1μF 3.3V 1μF 2208 TA01 AMPLITUDE (dBFS) 64k Point FFT, FIN = 15.1MHz, –1dB, PGA = 0 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 0 10 20 30 40 50 60 FREQUENCY (MHz) 2208 TA01b 2208fc 1 LTC2208 ABSOLUTE MAXIMUM RATINGS OVDD = VDD (Notes 1 and 2) Supply Voltage (VDD) ................................... –0.3V to 4V Digital Output Ground Voltage (OGND) ........ –0.3V to 1V Analog Input Voltage (Note 3)...... –0.3V to (VDD + 0.3V) Digital Input Voltage..................... –0.3V to (VDD + 0.3V) Digital Output Voltage................ –0.3V to (OVDD + 0.3V) Power Dissipation ............................................ 2000mW Operating Temperature Range LTC2208C ..


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