Datasheet LTC2253, LTC2252 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 12-Bit, 125Msps Low Power 3V ADCs |
| 页数 / 页 | 24 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 125Msps/105Msps. Single 3V Supply … |
| 文件格式/大小 | PDF / 639 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTIO. Sample Rate: 125Msps/105Msps. Single 3V Supply (2.85V to 3.4V). Low Power: 395mW/320mW. 70.2dB SNR. 88dB SFDR
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LTC2253/LTC2252 12-Bit, 125/105Msps Low Power 3V ADCs
U FEATURES DESCRIPTIO
■
Sample Rate: 125Msps/105Msps
The LTC®2253/LTC2252 are 12-bit 125Msps/105Msps, ■
Single 3V Supply (2.85V to 3.4V)
low power 3V A/D converters designed for digitizing high ■
Low Power: 395mW/320mW
frequency, wide dynamic range signals. The LTC2253/ ■
70.2dB SNR
LTC2252 are perfect for demanding imaging and commu- ■
88dB SFDR
nications applications with AC performance that includes ■ No Missing Codes 70.1dB 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 ±0.3LSB INL (typ), ±0.15LSB DNL (typ) ■ Clock Duty Cycle Stabilizer and no missing codes over temperature. The transition ■ Shutdown and Nap Modes noise is a low 0.32LSB ■ Pin Compatible Family RMS. 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit) output supply allows the outputs to drive 0.5V to 3.3V 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit) logic. 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit) mance at full speed for a wide range of clock duty cycles. 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) , LTC and LT are registered trademarks of Linear Technology Corporation. ■ 32-Pin (5mm × 5mm) QFN Package All other trademarks are the property of their respective owners.
U APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2253: SNR vs Input Frequency, –1dB, 2V Range, 125Msps
REFH FLEXIBLE 73 REFL REFERENCE 72 OVDD 71 + D11 12-BIT • 70 ANALOG INPUT CORRECTION OUTPUT PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 69 – D0 SNR (dBFS) 68 OGND 67 CLOCK/DUTY 66 CYCLE CONTROL 65 0 50 100 150 200 250 300 350 22532 TA01 INPUT FREQUENCY (MHz) 22532 G09 CLK 22532fa 1
U FEATURES DESCRIPTIO
■
Sample Rate: 125Msps/105Msps
The LTC®2253/LTC2252 are 12-bit 125Msps/105Msps, ■
Single 3V Supply (2.85V to 3.4V)
low power 3V A/D converters designed for digitizing high ■
Low Power: 395mW/320mW
frequency, wide dynamic range signals. The LTC2253/ ■
70.2dB SNR
LTC2252 are perfect for demanding imaging and commu- ■
88dB SFDR
nications applications with AC performance that includes ■ No Missing Codes 70.1dB 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 ±0.3LSB INL (typ), ±0.15LSB DNL (typ) ■ Clock Duty Cycle Stabilizer and no missing codes over temperature. The transition ■ Shutdown and Nap Modes noise is a low 0.32LSB ■ Pin Compatible Family RMS. 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit) output supply allows the outputs to drive 0.5V to 3.3V 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit) logic. 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit) mance at full speed for a wide range of clock duty cycles. 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) , LTC and LT are registered trademarks of Linear Technology Corporation. ■ 32-Pin (5mm × 5mm) QFN Package All other trademarks are the property of their respective owners.
U APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2253: SNR vs Input Frequency, –1dB, 2V Range, 125Msps
REFH FLEXIBLE 73 REFL REFERENCE 72 OVDD 71 + D11 12-BIT • 70 ANALOG INPUT CORRECTION OUTPUT PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 69 – D0 SNR (dBFS) 68 OGND 67 CLOCK/DUTY 66 CYCLE CONTROL 65 0 50 100 150 200 250 300 350 22532 TA01 INPUT FREQUENCY (MHz) 22532 G09 CLK 22532fa 1