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LTC2250 Dataheets PDF



Part Number LTC2250
Manufacturers Linear Technology
Logo Linear Technology
Description Low Noise 3V ADCs
Datasheet LTC2250 DatasheetLTC2250 Datasheet (PDF)

U U FEATURES ■ Sample Rate: 125Msps/105Msps ■ Single 3V Supply (2.85V to 3.4V) ■ Low Power: 395mW/320mW ■ 61.6dB SNR ■ 85dB SFDR ■ No Missing Codes ■ Flexible Input: 1VP-P to 2VP-P Range ■ 640MHz Full Power Bandwidth S/H ■ Clock Duty Cycle Stabilizer ■ Shutdown and Nap Modes ■ Pin Compatible Family: 125Msps: LTC2251 (10-Bit), LTC2253 (12-Bit) 105Msps: LTC2250 (10-Bit), LTC2252 (12-Bit) 80Msps: LTC2239 (10-Bit), LTC2229 (12-Bit) 65Msps: LTC2238 (10-Bit), LTC2228 (12-Bit) 40Msps: LTC2237 (10-Bit).

  LTC2250   LTC2250



Document
U U FEATURES ■ Sample Rate: 125Msps/105Msps ■ Single 3V Supply (2.85V to 3.4V) ■ Low Power: 395mW/320mW ■ 61.6dB SNR ■ 85dB SFDR ■ No Missing Codes ■ Flexible Input: 1VP-P to 2VP-P Range ■ 640MHz Full Power Bandwidth S/H ■ Clock Duty Cycle Stabilizer ■ Shutdown and Nap Modes ■ Pin Compatible Family: 125Msps: LTC2251 (10-Bit), LTC2253 (12-Bit) 105Msps: LTC2250 (10-Bit), LTC2252 (12-Bit) 80Msps: LTC2239 (10-Bit), LTC2229 (12-Bit) 65Msps: LTC2238 (10-Bit), LTC2228 (12-Bit) 40Msps: LTC2237 (10-Bit), LTC2227 (12-Bit) 25Msps: LTC2236 (10-Bit), LTC2226 (12-Bit) ■ 32-Pin (5mm × 5mm) QFN Package U APPLICATIO S ■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation LTC2251/LTC2250 10-Bit, 125/105Msps Low Noise 3V ADCs DESCRIPTIO The LTC®2251/LTC2250 are 10-bit 125Msps/105Msps, low noise 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2251/ LTC2250 are perfect for demanding imaging and communications applications with AC performance that includes 61.6dB SNR and 85dB SFDR for signals at the Nyquist frequency. DC specs include ±0.1LSB INL (typ), ±0.05LSB DNL (typ) and ±0.6LSB INL, ±0.6LSB DNL over temperature. The transition noise is a low 0.08LSBRMS. A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.3V logic. A single-ended CLK input controls converter operation. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles. , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATIO REFH REFL ANALOG INPUT FLEXIBLE REFERENCE + INPUT S/H – CLOCK/DUTY CYCLE CONTROL CLK 10-BIT PIPELINED ADC CORE CORRECTION LOGIC OUTPUT DRIVERS OVDD D9 • • • D0 OGND 22510 TA01 SNR (dBFS) LTC2251: SNR vs Input Frequency, –1dB, 2V Range, 125Msps 65 64 63 62 61 60 59 58 57 56 55 0 50 100 150 200 250 300 350 INPUT FREQUENCY (MHz) 22510 G09 22510fa 1 U U WW W LTC2251/LTC2250 ABSOLUTE AXI U RATI GS OVDD = VDD (Notes 1, 2) Supply Voltage (VDD) ................................................. 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 ............................................ 1500mW Operating Temperature Range LTC2251C, LTC2250C ............................. 0°C to 70°C LTC2251I, LTC2250I ...........................–40°C to 85°C Storage Temperature Range ..................–65°C to 125°C UW U PACKAGE/ORDER I FOR ATIO TOP VIEW VDD VCM SENSE MODE OF D9 D8 D7 AIN+ 1 AIN– 2 32 31 30 29 28 27 26 25 24 D6 23 D5 REFH 3 22 D4 REFH 4 REFL 5 33 21 OVDD 20 OGND REFL 6 19 D3 VDD 7 GND 8 18 D2 17 D1 9 10 11 12 13 14 1.


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