Rainbow Electronics ADC10064 - Manual

TL H 11020
ADC10061ADC10062ADC10064
10-Bit
600
ns
AD
Converter
with
Input
Multiplexer
and
SampleHold
December 1994
ADC10061 ADC10062 ADC10064 10-Bit 600 ns
A D Converter with Input Multiplexer and Sample Hold
General Description
Using an innovative patented multistep conversion tech-
nique the 10-bit ADC10061 ADC10062 and ADC10064
CMOS analog-to-digital converters offer sub-microsecond
conversion times yet dissipate a maximum of only 235 mW
The ADC10061 ADC10062 and ADC10064 perform a
10-bit conversion in two lower-resolution ‘‘flashes’’ thus
yielding a fast A D without the cost power dissipation and
other problems associated with true flash approaches The
ADC10061 is pin-compatible with the ADC1061 but much
faster thus providing a convenient upgrade path for the
ADC1061
The analog input voltage to the ADC10061 ADC10062 and
ADC10064 is sampled and held by an internal sampling cir-
cuit Input signals at frequencies from dc to over 200 kHz
can therefore be digitized accurately without the need for an
external sample-and-hold circuit
The ADC10062 and ADC10064 include a ‘‘speed-up’’ pin
Connecting an external resistor between this pin and ground
reduces the typical conversion time to as little as 350 ns
with only a small increase in linearity error
For ease of interface to microprocessors the ADC10061
ADC10062 and ADC10064 have been designed to appear
as a memory location or I O port without the need for exter-
nal interface logic
Features
Y Built-in sample-and-hold
Y Single a5V supply
Y 1 2 or 4-input multiplexer options
Y No external clock required
Y Speed adjust pin for faster conversions (ADC10062 and
ADC10064) See ADC10662 4 for high speed guaran-
teed performance
Key Specifications
Y Conversion time to 10 bits 600 ns typical
900 ns max over temperature
Y Sampling Rate 800 kHz
Y Low power dissipation 235 mW (max)
Y Total unadjusted error g 1 0 LSB (max)
Y No missing codes over temperature
Applications
Y Digital signal processor front ends
Y Instrumentation
Y Disk drives
Y Mobile telecommunications
Ordering Information
ADC10061
Industrial (b40 C s T A s a 85 C) Package
ADC10061BIN ADC10061CIN N20A Molded DIP
ADC10061BIWM ADC10061CIWM M20B Small Outline
Military (b55 C s T A s a 125 C) Package
ADC10061CMJ 883 J20A Cerdip
ADC10062
Industrial (b40 C s T A s a 85 C) Package
ADC10062BIN ADC10062CIN N24A Molded DIP
ADC10062BIWM ADC10062CIWM M24B Small Outline
Military (b55 C s T
A s a 125 C) Package
ADC10062CMJ 883 J24A Cerdip
ADC10064
Industrial (b40 C s T A s a 85 C) Package
ADC10064BIN ADC10064CIN N28B Molded DIP
ADC10064BIWM ADC10064CIWM M28B Small Outline
Military (b55 C s T A s a 125 C) Package
ADC10064CMJ 883 J28A Cerdip
U S Patent Number 4918449
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation RRD-B30M75 Printed in U S A