描述 Description

The ADC12040 is a monolithic CMOS analog-to-digital converter capable of converting analog input signals into 12-bit digital words at 40 Megasamples per second (MSPS), minimum. This converter uses a differential, pipeline architecture with digital error correction and an on-chip sample-and-hold circuit to minimize die size and power consumption while providing excellent dynamic performance. Operating on a single 5V power supply, this device consumes just 340 mW at 40 MSPS, including the reference current. The Power Down feature reduces power consumption to 40 mW.The differential inputs provide a full scale differential input swing equal to 2VREF with the possibility of a single-ended input, although full use of the differential input is required for optimum performance. For ease of use, the buffered, high impedance, single-ended reference input is converted on-chip to a differential reference for use by the processing circuitry. Output data format is 12-bit offset binary.This device is available in the 32-lead LQFP package and will operate over the industrial temperature range of ?40°C to +85°C.

特性 Features

? Single +5V Supply Operation
? Internal Sample-and-Hold
? Outputs 2.35V to 5V Compatible
? Pin Compatible with ADC12010, ADC12020, ADC12L063, ADC12L066
? Power Down Mode
? On-Chip Reference Buffer
Key Specifications
? Supply Voltage: +5V ±5%
? DNL: ±0.4 LSB (typ)
? SNR (fIN = 10MHz): 69 dB (typ)
? ENOB (fIN = 10MHz): 11.2 bits (typ)
? Power Consumption, 40 MHz: 340 mW (typ)