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ADC08061BIN
500 ns A/D Converter with S/H Function and Input Multiplexer
ADC08061/ADC08062
500 ns A/D Converter with S/H Function and Input
Multiplexer
General DescriptionUsinga patented multi-stepA/D conversion technique,the
8-bit ADC08061 and ADC08062 CMOS ADCs offer500ns
(typ) conversion time, internal sample-and-hold (S/H), and
dissipate only 125 mWof power. The ADC08062 hasa
two-channel multiplexer. The ADC08061/2 family performs 8-bit conversion usinga 2-bit voltage estimatorthat gen-
eratesthe2 MSBsand twolow-resolution(3-bit)flashesthat
generatethe6 LSBs.
Input track-and-hold circuitry eliminatesthe needforanex-
ternal sample-and-hold. The ADC08061/2 family performs
accurate conversionsof full-scale input signalsthat havea
frequency rangeofDCto 300 kHz (full-power bandwidth)
without needofan external S/H.
The digital interfacehas been designedto ease connection microprocessors andallowsthe partstobeI/Oor memory
mapped.
Key Specifications Resolution 8bits Conversion Time 560ns max (WR-RD Mode)
Full Power Bandwidth 300 kHz Throughput rate 1.5 MHz Power Dissipation 100 mW max Total Unadjusted Error ±1⁄2 LSBand±1 LSB
Features1or2 input channelsNo external clock required Analog input voltage range from GNDtoV+ Overflow output availablefor cascading (ADC08061) ADC08061 pin-compatiblewiththe industry standard
ADC0820
Applications Mobile telecommunications Hard disk drives Instrumentation High-speed data acquisition systems
Block DiagramTRI-STATE®isa registeredtrademark ofNationalSemiconductorCorporation.
DS011086-1
*ADC08061 ADC08062
June 1999
ADC08061/ADC08062
A/D
Converter
with
S/H
Function
and
Input
Multiplexer©1999 National Semiconductor Corporation DS011086
