Datasheet LTC2251, LTC2250 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 10-Bit, 125Msps Low Noise 3V ADCs |
| Seiten / Seite | 24 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 125Msps/105Msps. Single 3V Supply … |
| Dateiformat / Größe | PDF / 611 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTIO. Sample Rate: 125Msps/105Msps. Single 3V Supply (2.85V to 3.4V). Low Power: 395mW/320mW. 61.6dB SNR. 85dB SFDR
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LTC2251/LTC2250 10-Bit, 125/105Msps Low Noise 3V ADCs
U FEATURES DESCRIPTIO
■
Sample Rate: 125Msps/105Msps
The LTC®2251/LTC2250 are 10-bit 125Msps/105Msps, ■
Single 3V Supply (2.85V to 3.4V)
low noise 3V A/D converters designed for digitizing high ■
Low Power: 395mW/320mW
frequency, wide dynamic range signals. The LTC2251/ ■
61.6dB SNR
LTC2250 are perfect for demanding imaging and commu- ■
85dB SFDR
nications applications with AC performance that includes ■ No Missing Codes 61.6dB SNR and 85dB SFDR for signals at the Nyquist ■ Flexible Input: 1VP-P to 2VP-P Range frequency. ■ 640MHz Full Power Bandwidth S/H DC specs include ±0.1LSB INL (typ), ±0.05LSB DNL (typ) ■ Clock Duty Cycle Stabilizer and ±0.6LSB INL, ±0.6LSB DNL over temperature. The ■ Shutdown and Nap Modes transition noise is a low 0.08LSB ■ Pin Compatible Family: RMS. 125Msps: LTC2251 (10-Bit), LTC2253 (12-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2250 (10-Bit), LTC2252 (12-Bit) output supply allows the outputs to drive 0.5V to 3.3V 80Msps: LTC2239 (10-Bit), LTC2229 (12-Bit) logic. 65Msps: LTC2238 (10-Bit), LTC2228 (12-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2237 (10-Bit), LTC2227 (12-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2236 (10-Bit), LTC2226 (12-Bit) mance at full speed for a wide range of clock duty cycles. ■ 32-Pin (5mm × 5mm) QFN Package
U
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2251: SNR vs Input Frequency, –1dB, 2V Range, 125Msps
REFH FLEXIBLE 65 REFL REFERENCE 64 OVDD 63 + D9 62 10-BIT • ANALOG INPUT CORRECTION OUTPUT 61 PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 60 – D0 SNR (dBFS) 59 OGND 58 57 CLOCK/DUTY CYCLE 56 CONTROL 55 0 50 100 150 200 250 300 350 22510 TA01 INPUT FREQUENCY (MHz) 22510 G09 CLK 22510fa 1
U FEATURES DESCRIPTIO
■
Sample Rate: 125Msps/105Msps
The LTC®2251/LTC2250 are 10-bit 125Msps/105Msps, ■
Single 3V Supply (2.85V to 3.4V)
low noise 3V A/D converters designed for digitizing high ■
Low Power: 395mW/320mW
frequency, wide dynamic range signals. The LTC2251/ ■
61.6dB SNR
LTC2250 are perfect for demanding imaging and commu- ■
85dB SFDR
nications applications with AC performance that includes ■ No Missing Codes 61.6dB SNR and 85dB SFDR for signals at the Nyquist ■ Flexible Input: 1VP-P to 2VP-P Range frequency. ■ 640MHz Full Power Bandwidth S/H DC specs include ±0.1LSB INL (typ), ±0.05LSB DNL (typ) ■ Clock Duty Cycle Stabilizer and ±0.6LSB INL, ±0.6LSB DNL over temperature. The ■ Shutdown and Nap Modes transition noise is a low 0.08LSB ■ Pin Compatible Family: RMS. 125Msps: LTC2251 (10-Bit), LTC2253 (12-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2250 (10-Bit), LTC2252 (12-Bit) output supply allows the outputs to drive 0.5V to 3.3V 80Msps: LTC2239 (10-Bit), LTC2229 (12-Bit) logic. 65Msps: LTC2238 (10-Bit), LTC2228 (12-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2237 (10-Bit), LTC2227 (12-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2236 (10-Bit), LTC2226 (12-Bit) mance at full speed for a wide range of clock duty cycles. ■ 32-Pin (5mm × 5mm) QFN Package
U
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2251: SNR vs Input Frequency, –1dB, 2V Range, 125Msps
REFH FLEXIBLE 65 REFL REFERENCE 64 OVDD 63 + D9 62 10-BIT • ANALOG INPUT CORRECTION OUTPUT 61 PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 60 – D0 SNR (dBFS) 59 OGND 58 57 CLOCK/DUTY CYCLE 56 CONTROL 55 0 50 100 150 200 250 300 350 22510 TA01 INPUT FREQUENCY (MHz) 22510 G09 CLK 22510fa 1