Dual 12-Bit, 40Msps Low Power 3V ADCs

The LTC2293/LTC2292/LTC2291 are 12-bit 65Msps/40Msps/25Msps, low power dual 3V A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2293/LTC2292/LTC2291 are perfect for demanding imaging and communications applications with AC performance that includes 71.3dB SNR and 90dB SFDR for signals at the Nyquist frequency.

DC specs include ±0.3LSB INL (typ), ±0.15LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.25LSBRMS.

A single 3V supply allows low power operation. A separate output supply allows the outputs to drive 0.5V to 3.6V logic. An optional multiplexer allows both channels to share a digital output bus.

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.

Applications

* Wireless and Wired Broadband Communication

* Imaging Systems

* Spectral Analysis

* Portable Instrumentation

* Integrated Dual 12-Bit ADCs

* Sample Rate: 65Msps/40Msps/25Msps

* Single 3V Supply (2.7V to 3.4V)

* Low Power: 400mW/235mW/150mW

* 71.3 dB SNR

* 90dB SFDR

* 110dB Channel Isolation at 100MHz

* Multiplexed or Separate Data Bus

* Flexible Input: 1VP-P to 2VP-P Range

* 575MHz Full Power Bandwidth S/H

* Clock Duty Cycle Stabilizer

* Shutdown and Nap Modes

* Pin Compatible Family

* 105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit)

* 80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit)

* 65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit)

* 40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit)

* 25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit)

* 10Msps: LTC2290 (12-Bit), LTC2295 (14-Bit)

* 64-Pin (9mm × 9mm) QFN Package