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LTC2205 Dataheets PDF



Part Number LTC2205
Manufacturers Linear Technology
Logo Linear Technology
Description 65Msps/40Msps ADC
Datasheet LTC2205 DatasheetLTC2205 Datasheet (PDF)

FEATURES n Sample Rate: 65Msps/40Msps n 79dB SNR and 100dB SFDR (2.25VP-P Range) n SFDR >92dB at 140MHz (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 Single 3.3V Supply n Power Dissipation: 610mW/480mW n Optional Clock Duty Cycle Stabilizer n Out-of-Range Indicator n Pin Compatible Family 105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit) 80Msps: LTC2206 (16-Bit), LTC2206-14 (14.

  LTC2205   LTC2205



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FEATURES n Sample Rate: 65Msps/40Msps n 79dB SNR and 100dB SFDR (2.25VP-P Range) n SFDR >92dB at 140MHz (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 Single 3.3V Supply n Power Dissipation: 610mW/480mW n Optional Clock Duty Cycle Stabilizer n Out-of-Range Indicator n Pin Compatible Family 105Msps: LTC2207 (16-Bit), LTC2207-14 (14-Bit) 80Msps: LTC2206 (16-Bit), LTC2206-14 (14-Bit) 65Msps: LTC2205 (16-Bit), LTC2205-14 (14-Bit) 40Msps: LTC2204 (16-Bit) n 48-Pin (7mm × 7mm) QFN Package APPLICATIONS n Telecommunications n Receivers n Cellular Base Stations n Spectrum Analysis n Imaging Systems n ATE LTC2205/LTC2204 16-Bit, 65Msps/40Msps ADCs DESCRIPTION The LTC®2205/LTC2204 are sampling 16-bit A/D converters designed for digitizing high frequency, wide dynamic range signals up to input frequencies of 700MHz. The input range of the ADC can be optimized with the PGA front end. The LTC2205/LTC2204 are perfect for demanding communications applications, with AC performance that includes 79dB SNR and 100dB spurious free dynamic range (SFDR). Ultralow jitter of 90fsRMS allows undersampling of high input frequencies with excellent noise performance. Maximum DC specs include ±4LSB INL, ±1LSB DNL (no missing codes). 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. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 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 OE ADC CONTROL INPUTS RAND 0.5V TO 3.6V 0.1μF OF CLKOUT D15 • • • D0 0.1μF 0.1μF 3.3V 0.1μF 22076 TA01 AMPLITUDE (dBFS) LTC2205: 64K Point FFT, fIN = 5.1MHz, –1dBFS, PGA = 0, DITH = 0 0 –20 – 40 – 60 – 80 –100 –120 –140 0 5 10 15 20 25 30 FREQUENCY (MHz) 22054 TA01b 22054fc 1 LTC2205/LTC2204 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 LTC2205C/LTC2204C ............................... 0°C to 70°C LTC2205I/LTC2204I..............................–40°C .


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