LTC2249 Series

14-Bit, 80Msps Low Power 3V ADC

Catalog

14-Bit, 80Msps Low Power 3V ADC

Part	Reference Type	Sampling Rate (Per Second)	Ratio - S/H:ADC	Operating Temperature [Max]	Operating Temperature [Min]	Number of Inputs	Data Interface	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Architecture	Input Type	Supplier Device Package	Number of A/D Converters	Number of Bits	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Configuration
Analog Devices LTC2249CUH#PBF	External Internal	80 M	1:1	70 °C	0 °C	1	Parallel	3.4 V	2.7 V	Surface Mount	Pipelined	Differential Single Ended	32-QFN (5x5)	1	14	3.4 V	2.7 V	S/H-ADC

Catalog

14-Bit, 80Msps Low Power 3V ADC

Key Features

• Sample Rate: 80Msps

• Single 3V Supply (2.7V to 3.4V)

• Low Power: 222mW

• 73dB SNR at 70MHz Input

• 90dB SFDR at 70MHz Input

• No Missing Codes

• Flexible Input: 1VP-Pto 2VP-PRange

• 575MHz Full Power Bandwidth S/H

• Clock Duty Cycle Stabilizer

• Shutdown and Nap Modes

• Pin Compatible Family125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)

• 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit)

• 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit)

• 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit)

• 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit)

• 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit)

• 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit)

• 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit)

• 32-Pin (5mm × 5mm) QFN Package

Description

The LTC2249 is a 14-bit 80Msps, low power 3V A/D converter designed for digitizing high frequency, wide dynamic range signals. The LTC2249 is perfect for demanding imaging and communications applications with AC performance that includes 73dB SNR and 90dB SFDR for signals well beyond the Nyquist frequency.DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.2LSBRMS.A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V 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.ApplicationsWireless and Wired Broadband CommunicationImaging SystemsUltrasoundSpectral AnalysisPortable Instrumentation