Linear Technology’s LTM 9011 14-bit Octal 125Module ADCs

Published:2011/10/18 22:23:00 Author:Amy From:SeekIC

Linear’s LTM 9011-14, 14-bit, is an octal 14-bit, 125Msps ADC with 73.1dB signal to noise ratio (SNR) and 88dB spurious free dynamic range (SFDR) at baseband.

The LTM 9011-14/LTM9010-14/LTM9009-14 are 8-channel, simultaneous sampling 14-bit A/D converters intended for digitizing high frequency, wide dynamic range signals. AC performance includes 73.1dB SNR and 88dB spurious free dynamic range (SFDR). Low power consumption per channel reduces heat in high channel count applications. Integrated bypass capacitance and flow-through pinout reduces overall board space requirements.

DC specs include ±1LSB INL (typ), ±0.3LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 1.2LSBRMS.

The digital outputs are serial LVDS to reduce data lines. Each channel outputs two bits at a time (2-lane mode). At lower sampling rates there is a one bit per channel option (1-lane mode).

The ENC+ and ENC– inputs may be driven differentially or single-ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An internal clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.

Power dissipation is only 140mW per channel. The 80Msps LTM9009-14 and 105Msps LTM9010-14 consume 94mW per channel and 113mW per channel, respectively.

Operating from 1.8V analogue and digital supplies, the LTM9011 family includes a sleep mode that reduces power dissipation to just 2mW.

Data is output from the LTM9011 in serial LVDS format to minimize the number of data lines.

At 125Msps, each channel outputs two bits simultaneously with two lanes per ADC. At sample rates below 62Msps, a one bit per channel option is available. The LTM9011 offers serial data communication and eight simultaneous sampling ADCs in a low profile 140-pin 11.25x9mm BGA uModule package.

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