ADC14161
Low-Distortion, Self-Calibrating 14-Bit, 2.5 MSPS,
390 mW A/D Converter
General 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 390mW (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-command
self-calibration reduces many of the effects of
temperature-induced drift, resulting in more repeatable con-
versions.
Tested and guaranteed dynamic performance specifications
provide the designer with known performance.
The Power Down feature reduces power consumption to
less than 2mW.
The ADC14161 comes in a TQFP and is designed to operate
over the industrial temperature range of −40˚C to +85˚C.
Features
n Single +5V Operation
n Auto-Calibration
n Power Down Mode
n TTL/CMOS Input/Output compatible
Key Specifications
n Resolution 14 Bits
n Conversion Rate 2.5 Msps (min)
n DNL 0.3 LSB (typ)
n SNR (f
IN
= 500 kHz) 80 dB (typ)
n ENOB 12.8 Bits (typ)
n Supply Voltage +5V ±5%
n Power Consumption 390mW (typ)
Applications
n Instrumentation
n PC-Based Data Acquisition
n Data Communications
n Blood Analyzers
n Sonar/Radar
Connection Diagram
Ordering Information
Industrial
(−40˚C ≤ TA ≤ +85˚C)
Package
ADC14161CIVT VEG52A 52 Pin Thin Quad Flat Pack
DS100154-1
January 2000
ADC14161
Low-Distortion,
Self-Calibrating
14-Bit,
2.5
MSPS,
390
mW
A/D
Converter
© 2000 National Semiconductor Corporation DS100154 www.national.com