ADC14161 Datasheet | National Semiconductor

Description The ADC14161 is a self-calibrating 14-bit, 2.5 Megasample per second analog to digital converter. It operates on a single +5V supply, consuming just 390m W (typical). The ADC14161 provides an easy and affordable upgrade from 12 bit converters. The ADC14161 may also be used to replace many hybrid converters with a resultant saving of space, power and cost. The ADC14161 operates with input frequencies up to 1⁄2 the clock frequency. The calibration feature of the ADC14161 can be used to get more consistent and repeatable results over the entire operating temperature range. On-mand self-calibration reduces many of the effects of temperature-induced drift, resulting in more repeatable conversions. Tested and guaranteed dynamic performance specifications provide the designer with known performance. The Power Down feature reduces power consumption to less than 2m W. The ADC14161 es in a TQFP and is designed to operate over the industrial temperature range of - 40˚C to +85˚C. Features n n n n Single +5V Operation Auto-Calibration Power Down Mode TTL/CMOS Input/Output patible Key Specifications n Resolution n Conversion Rate n DNL n SNR (f IN = 500 k Hz) n ENOB n Supply Voltage n Power Consumption 14 Bits 2.5 Msps (min) 0.3 LSB (typ) 80 d B (typ) 12.8 Bits (typ) +5V ± 5% 390m W (typ) Applications n n n n n Instrumentation PC-Based Data Acquisition Data munications Blood Analyzers Sonar/Radar Connection Diagram DS100154-1 Ordering Information Industrial (- 40˚C ≤ TA ≤ +85˚C) ADC14161CIVT Package VEG52A 52 Pin Thin Quad Flat Pack © 2000 National Semiconductor Corporation DS100154 .national. Block Diagram DS100154-2 .national. Pin Descriptions and Equivalent Circuits Pin No. Analog I/O 1 VIN+ Non-Inverting analog signal Input. With a 2.0V reference voltage and a 2.0V mon mode voltage, VCM, the input signal voltage range is from 1.0 volt to 3.0 Volts. Inverting analog signal Input. With a 2.0V reference voltage and a 2.0V mon mode...