ADC1001 Datasheet, PDF (1/9 Pages) National Semiconductor (TI) – 10-Bit P Compatible A/D Converter

June 1999
ADC1001
10-Bit µP Compatible A/D Converter
General Description
The ADC1001 is a CMOS, 10-bit successive approximation
A/D converter. The 20-pin ADC1001 is pin compatible with
the ADC0801 8-bit A/D family. The 10-bit data word is read in
two 8-bit bytes, formatted left justified and high byte first. The
six least significant bits of the second byte are set to zero, as
is proper for a 16-bit word.
Differential inputs provide low frequency input common
mode rejection and allow offsetting the analog range of the
converter. In addition, the reference input can be adjusted
enabling the conversion of reduced analog ranges with
10-bit resolution.
Key Specifications
n Resolution
n Linearity error
n Conversion time
10 bits
±1 LSB
200µS
Features
n ADC1001 is pin compatible with ADC0801 series 8-bit
A/D converters
n Compatible with NSC800 and 8080 µP derivatives — no
interfacing logic needed
n Easily interfaced to 6800 µP derivatives
n Differential analog voltage inputs
n Logic inputs and outputs meet both MOS and TTL
voltage level specifications
n Works with 2.5V (LM336) voltage reference
n On-chip clock generator
n 0V to 5V analog input voltage range with single 5V
supply
n Operates ratiometrically or with 5 V_DC, 2.5 V_DC, or
analog span adjusted voltage reference
n 0.3" standard width 20-pin DIP package
Connection Diagram
ADC1001
Dual-In-Line Package
Ordering Information
Temperature
Range
Order Number
Package Outline
Top View
DS005675-11
0˚C to +70˚C −40˚C to +85˚C
ADC1001CCJ-1
J20A
ADC1001CCJ
J20A
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© 1999 National Semiconductor Corporation DS005675
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