LTC2202

LTC2203/LTC2202 16-Bit, 25Msps/10Msps ADCs U LTC2203: 128K Point FFT, fIN = 5.1MHz, –1dBFS, PGA = 0 3.3V SENSE VCM 2.2μF AIN + ANALOG INPUT AIN – 1.25V COMMON MODE BIAS VOLTAGE INTERNAL ADC REFERENCE GENERATOR OVDD 0.5V TO 3.6V FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO ■ Sample Rate: 25Msps/10Msps 81.6dB SNR and 100dB SFDR (2.5V Range) SFDR 90dB at 70MHz (1.667VP-P Input Range) PGA Front End (2.5VP-P or 1.667VP-P Input Range) 380MHz Full Power Bandwidth S/H Optional Internal Dither Optional Data Output Randomizer Single 3.3V Supply Power Dissipation: 220mW/140mW Clock Duty Cycle Stabilizer Out-of-Range Indicator Pin Compatible Family 25Msps: LTC2203 (16-Bit) 10Msps: LTC2202 (16-Bit) 48-Pin (7mm × 7mm) QFN Package The LTC®2203/LTC2202 are 25Msps/10Msps, sampling 16-bit A/D converters designed for digitizing high frequency, wide dynamic range signals with input frequencies up to 380MHz. The input range of the ADC can be optimized with the PGA front end. The LTC2203/LTC2202 are perfect for demanding applications, with AC performance that includes 81.6dB SNR and 100dB spurious free dynamic range (SFDR). 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. A single-ended CLK input controls converter operation. 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. Protected by U.S. Patents including 4843302 and 6949965B1 APPLICATIO S ■ ■ ■ ■ ■ ■ Telecommunications Receivers Cellular Base Stations Spectrum Analysis Imaging Systems ATE TYPICAL APPLICATIO + S/H AMP – 16-BIT PIPELINED ADC CORE CORRECTION LOGIC AND SHIFT REGISTER OUTPUT DRIVERS OF CLKOUT+ CLKOUT– D15 • • • D0 OGND CMOS OUTPUTS CLOCK/DUTY CYCLE CONTROL VDD GND 1μF 1μF 3.3V 1μF AMPLITUDE (dBFS) CLK PGA SHDN ADC CONTROL INPUTS U U 1μF 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –140 0 2 8 4 6 FREQUENCY(MHz) 10 12 22032 GO7 DITH MODE OE RAND 22032 TA01 22032fb 1 LTC2203/LTC2202 ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO TOP VIEW 48 GND 47 PGA 46 RAND 45 MODE 44 OE 43 OF 42 D15 41 D14 40 D13 39 D12 38 OGND 37 OVDD OVDD = VDD (Notes 1 and 2) Supply Voltage (VDD) ................................... –0.3V to 4V Digital Output Supply Voltage (OVDD) .......... –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 LTC2203C/LTC2202C ............................... 0°C to 70°C LTC2203I/LTC2202I .............................–40°C to 85°C Storage Temperature Range ..................–65°C to 125°C SENSE 1 VCM 2 VDD 3 VDD 4 GND 5 AIN+ 6 AIN– 7 GND 8 GND 9 CLK 10 GND 11 VDD 12 49 36 OVDD 35 D11 34 D10 33 D9 32 D8 31 OGND 30 CLKOUT+ 29 CLKOUT– 28 D7 27 D6 26 D5 25 OVDD UK PACKAGE 48-LEAD (7mm × 7mm) PLASTIC QFN EXPOSED PAD IS GND (PIN 49) MUST BE SOLDERED TO PCB BOARD TJMAX = 125°C, θJA = 29°C/W TJMAX = 150°C, OPTION AVAILABLE, CONSULT FACTORY ORDER PART NUMBER LTC2203CUK LTC2202CUK LTC2203IUK LTC2202IUK 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/ *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. CO VERTER CHARACTERISTICS PARAMETER Resolution (No missing codes) Integral Linearity Error 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) TA = 25°C Differential Analog Input (Note 5) Differential Analog Input (Note 6) External Reference Internal Reference External Reference External Reference (2.5V Range, PGA = 0) MIN 16 ● ● ● ● VDD 13 VDD 14 GND 15 SHDN 16 DITH 17 D0 18 D1 19 D2 20 D3 21 D4 22 OGND 23 OVDD 24 UK PART* MARKING LTC2203UK LTC2202UK LTC2203UK LTC2202UK TYP ±1.2 ±1.5 ±0.3 ±2 ±10 ±0.2 ±30 ±15 1.92 MAX ±4.0 ±4.5 ±1 ±10 ±1.5 UNITS LSB LSB LSB mV μV/°C %FS ppm/°C ppm/°C LSBRMS 22032fb 2 U W U U WW W U LTC2203/LTC2202 A ALOG I PUT The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL VIN VIN, CM IIN ISENSE IMODE I⎯O⎯E CIN tAP tJITTER CMRR BW-3dB 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 ⎯O⎯E 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 (Note 9) 0V ≤ SENSE ≤ VDD (Note 10) 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 1MHz Input (2.5V Range, PGA = 0) 1MHz Input (1.667V Range, PGA = 1) 5MHz Input (2.5V Range, PGA = 0) 5MHz Input (1.667V Range, PGA = 1) 12.5MHz Input (2.5V Range, PGA = 0) 12.5MHz Input (1.667V Range, PGA = 1) 30MHz Input (2.5V Range, PGA = 0) 30MHz Input (1.667V Range, PGA = 1) 70MHz Input (2.5V Range, PGA = 0) 70MHz Input (1.667V Range, PGA =1 ) 1MHz Input (2.5V Range, PGA = 0) 1MHz Input (1.667V Range, PGA = 1) 5MHz Input (2.5V Range, PGA = 0) 5MHz Input (2.5V Range, PGA = 0) 5MHz Input (1.667V Range, PGA = 1) 12.5MHz Input (2.5V Range, PGA = 0) 12.5MHz Input (1.667V Range, PGA = 1) 30MHz Input (2.5V Range, PGA = 0) 30MHz Input (1.667V Range, PGA = 1) 70MHz Input (2.5V Range, PGA = 0) 70MHz Input (1.667V Range, PGA = 1) 1MHz Input (2.5V Range, PGA = 0) 1MHz Input (1.667V Range, PGA = 1) 5MHz Input (2.5V Range, PGA = 0) 5MHz Input (1.667V Range, PGA = 1) 12.5MHz Input (2.5V Range, PGA = 0) 12.5MHz Input (1.667V Range, PGA = 1) 30MHz Input (2.5V Range, PGA = 0) 30MHz Input (1.667V Range, PGA = 1) 70MHz Input (2.5V Range, PGA = 0) 70MHz Input (1.667V Range, PGA = 1) LTC2203 TYP MAX 81.6 79.4 80.0 81.6 79.4 81.4 79.3 80.8 77.5 78.9 78.3 77.2 100 100 85 100 90 100 100 95 100 90 85 95 85 90 100 100 90 100 100 100 100 100 90 100 90 90 MIN LTC2202 TYP MAX 81.6 79.4 80.0 81.6 79.4 81.4 79.3 80.8 77.5 78.9 78.3 77.2 100 100 85 100 90 100 100 95 100 90 85 95 85 90 100 100 90 100 100 100 100 100 90 100 90 90 MIN UNITS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBFS dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc 22032fb SFDR Spurious Free Dynamic Range 2nd or 3rd Harmonic SFDR Spurious Free Dynamic Range 4th Harmonic or Higher U WU U 1 –1 –3 Sample Mode CLK = 0 Hold Mode CLK = 0 TYP MAX 1.667 or 2.5 1.25 1.5 1 3 10 10 10.5 1.4 0.9 200 UNITS VP-P V μA μA μA μA pF pF ns fs RMS dB MHz 1V < (AIN+ = AIN–)