LTC2208CUP-14

LTC2208-14 14-Bit, 130Msps ADC FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO ■ Sample Rate: 130Msps 77.1dBFS Noise Floor 98dB SFDR SFDR >81dB at 250MHz (1.5VP-P Input Range) PGA Front End (2.25VP-P or 1.5VP-P Input Range) 700MHz Full Power Bandwidth S/H Optional Internal Dither Optional Data Output Randomizer LVDS or CMOS Outputs Single 3.3V Supply Power Dissipation: 1.32W Clock Duty Cycle Stabilizer Pin Compatible 16-Bit Version 130Msps: LTC2208 (16-Bit) 64-Pin (9mm × 9mm) QFN Package The LTC®2208-14 is a 130Msps, sampling 14-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 LTC2208-14 is perfect for demanding communications applications, with AC performance that includes 77.1dBFS Noise Floor and 98dB spurious free dynamic range (SFDR). Ultralow jitter of 70fsRMS allows undersampling of high input frequencies with excellent noise performance. Maximum DC specs include ±1.5LSB INL, ±0.5LSB 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. APPLICATIO S ■ ■ ■ ■ ■ ■ Telecommunications Receivers Cellular Base Stations Spectrum Analysis Imaging Systems ATE , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO 3.3V VCM 2.2µF AIN+ ANALOG INPUT AIN– 1.25V COMMON MODE BIAS VOLTAGE SENSE INTERNAL ADC REFERENCE GENERATOR OVDD 0.5V TO 3.6V 0.1µF OF CLKOUT D13 • • • D0 OGND CLOCK/DUTY CYCLE CONTROL VDD GND ENC + ENC – PGA SHDN DITH MODE LVDS RAND 0.1µF 0.1µF 220814 TA01 S/H AMP – CORRECTION LOGIC AND SHIFT REGISTER OUTPUT DRIVERS CMOS OR LVDS AMPLITUDE (dBFS) + 14-BIT PIPELINED ADC CORE 0.1µF ADC CONTROL INPUTS 220814f U 32k Point FFT, fIN = 15.11MHz, –1dB, PGA = 0, RAND “On”, Dither “OFF” 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 3.3V –100 –110 –120 0 10 40 30 20 50 FREQUENCY (MHz) 60 220814 G05 U U 1 LTC2208-14 ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW 64 PGA 63 RAND 62 MODE 61 LVDS 60 OF+/0FA 59 OF–/DA13 58 D13+/DA12 57 D13–/DA11 56 D12+/DA10 55 D12–/DA9 54 D11+/DA8 53 D11–/DA7 52 D10+/DA6 51 D10–/DA5 50 OGND 49 OVDD 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-14 ........................................... 0°C to 70°C LTC2208I-14 ........................................–40°C to 85°C Storage Temperature Range ..................–65°C to 150°C Digital Output Supply Voltage (OVDD) .......... –0.3V to 4V SENSE 1 GND 2 VCM 3 GND 4 VDD 5 VDD 6 GND 7 AIN+ 8 AIN– 9 GND 10 GND 11 ENC+ 12 ENC– 13 GND 14 VDD 15 VDD 16 65 48 D9+/DA4 47 D9–/DA3 46 D8+/DA2 45 D8–/DA1 44 D7 +/DA0 43 D7 –/DNC 42 D6+/DNC 41 D6–/CLKOUTA 40 CLKOUT+/CLKOUTB 39 CLKOUT–/OFB 38 D5+/DB13 _ 37 D5 /DB12 36 D4+/DB11 35 D4–/DB10 34 D3+/DB9 33 D3–/DB8 EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB BOARD TJMAX = 125°C, θJA = 20°C/W ORDER PART NUMBER LTC2208CUP-14 LTC2208IUP-14 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. CO VERTER CHARACTERISTICS PARAMETER Integral Linearity Error Differential Linearity Error Offset Error Offset Drift Gain Error Full-Scale Drift Transition Noise The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) CONDITIONS Differential Analog Input (Note 5) Differential Analog Input (Note 6) External Reference Internal Reference External Reference External Reference ● ● ● ● VDD 17 GND 18 SHDN 19 DITH 20 NC 21 NC 22 DNC/DB0 23 DNC/DB1 24 D0–/DB2 25 D0+/DB3 26 D1–/DB4 27 D1+/DB5 28 D2–/DB6 29 D2+/DB7 30 OGND 31 OVDD 32 UP PACKAGE 64-LEAD (9mm × 9mm) PLASTIC QFN UP PART MARKING* LTC2208UP-14 LTC2208UP-14 MIN TYP ±1 ±0.2 ±2 ±10 ±0.2 ±30 ±15 0.8 MAX ±1.5 ±0.5 ±10.8 ±2.3 UNITS LSB LSB mV μV/°C %FS ppm/°C ppm/°C LSBRMS 220814f 2 U W U U WW W U LTC2208-14 A ALOG I PUT SYMBOL VIN VIN, CM IIN ISENSE IMODE ILVDS CIN tAP tJITTER CMRR BW-3dB The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) PARAMETER Analog Input Range (AIN+ – AIN–) Analog Input Common Mode Analog Input Leakage Current SENSE Input Leakage Current MODE Pin Pull-Down Current to GND LVDS Pin Pull-Down Current to GND Analog Input Capacitance Sample-and-Hold Acquisition Delay Time Sample-and-Hold Acquisition Delay Time Jitter Analog Input Common Mode Rejection Ratio Full Power Bandwidth CONDITIONS 3.135V ≤ VDD ≤ 3.465V Differential Input (Note 7) 0V ≤ AIN+, AIN– ≤ VDD 0V ≤ SENSE ≤ VDD MIN ● ● ● DY A IC ACCURACY SYMBOL SNR PARAMETER Signal-to-Noise Ratio The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. AIN = – 1dBFS. (Note 4) CONDITIONS 5MHz Input (2.25V Range, PGA = 0) 5MHz Input (1.5V Range, PGA = 1) 30MHz Input (2.25V Range, PGA = 0) TA = 25°C 30MHz Input (2.25V Range, PGA = 0) 30MHz Input (1.5V Range, PGA = 1) 70MHz Input (2.25V Range, PGA = 0) 70MHz Input (1.5V Range, PGA = 1) 140MHz Input (2.25V Range, PGA = 0) 140MHz Input (1.5V Range, PGA = 1) TA = 25°C 140MHz Input (1.5V Range, PGA = 1) 250MHz Input (2.25V Range, PGA = 0) 250MHz Input (1.5V Range, PGA =1 ) 5MHz Input (2.25V Range, PGA = 0) 5MHz Input (1.5V Range, PGA = 1) 30MHz Input (2.25V Range, PGA = 0) 30MHz Input (1.5V Range, PGA = 1) 70MHz Input (2.25V Range, PGA = 0) 70MHz Input (1.5V Range, PGA = 1) 140MHz Input (2.25V Range, PGA = 0) 140MHz Input (1.5V Range, PGA = 1) 250MHz Input (2.25V Range, PGA = 0) 250MHz Input (1.5V Range, PGA = 1) MIN TYP 77.1 74.9 77.0 77.0 74.9 76.9 74.8 76.4 74.6 74.6 75.0 73.6 98 98 96 98 90 93 85 95 76 81 MAX UNITS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic U WU U 1 –1 –3 TYP 1.5 or 2.25 1.25 MAX 1.5 1 3 Sample Mode ENC+ < ENC– Hold Mode ENC+ > ENC– 10 10 6.5 1.8 1.0 70 UNITS VP-P V µA µA µA µA pF pF ns fs RMS dB MHz 1V < (AIN+ = AIN–)