ADC14071 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – 14-Bit, 7 MSPS, 380 mW A/D Converter

November 1999
ADC14071
14-Bit, 7 MSPS, 380 mW A/D Converter
General Description
The ADC14071 is a 14-bit, monotholic analog to digital con-
verter capable of conversion rates up to 8 Megasamples per
second. This CMOS converter uses a differential, piperlined
architecture with digital error correction and an on-chip
track-and-hold circuit to maintain superb dynamic perfor-
mance with input frequencies up to 20MHz. Tested and guar-
anteed dynamic performance specifications provide the de-
signer with known performance. The ADC14071 operates on
a +5V single supply consuming just 380mW (typical). The
Power Down feature reduces power consumption to 20mW,
typical.
The differential inputs provide a full scale input swing of
±V_REF with the possibility of a single input. Full use of the dif-
ferential input is recommended for optimum perfomance. For
ease of use, the reference input is single ended. This single-
ended reference input is converted on-chip to a differential
reference configuration for use by the processing circuitry.
Output data format is 14-bit straight binary.
The ADC14071 may be used to replace many hybrid con-
verters with a resultant saving of space, power and cost.
The ADC14071 comes in a 48-pin TQFP and is specified to
operate over the industrial temperature range of −40˚C to
+85˚C.
Features
n Single +5V Operation
n Power Down Mode
n TTL/CMOS Input/Output Compatible
Key Specifications
n Resolution
n Max Conversion Rate
n DNL
n SNR (f_IN = 500 kHz)
n ENOB (f_W = 500 kHz)
n Supply Voltage
n Power Consumption
Applications
n Document Scanners
n Imaging
n Instrumentation
n PC-Based Data Acquisition
n Spectrum Analyzers
n Sonar/Radar
n xDSL
n Wireless Local Loop
n Data Acquisition Systems
n DSP Front End
Connection Diagram
14 Bits
7 Msps (min)
±0.6 LSB (typ)
80 dB (typ)
12.6 Bits (typ)
+5V ±5%
380 mW (typ)
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