ADC1001

Features:

`ADC1001 is pin compatible with ADC0801 series 8-bit A/D converters
`Compatible with NSC800 and 8080 P derivatives-no interfacing logic needed
`Easily interfaced to 6800 P derivatives
`Differential analog voltage inputs
` Logic inputs and outputs meet both MOS and TTL voltage level specifications
`Works with 2.5V (LM336) voltage reference
`On-chip clock generator
`0V to 5V analog input voltage range with single 5V supply
`Operates ratiometrically or with 5 V<sub>DC</sub>, 2.5 V<sub>DC</sub>, or analog span adjusted voltage reference
`0.3" standard width 20-pin DIP package


Specifications

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
Supply Voltage (V_CC) (Note 3) ..............6.5V
Logic Control Inputs.............. −0.3V to +18V
Voltage at Other Inputs and Outputs.. −0.3V to (V_CC+0.3V)
Storage Temperature Range .........−65 to +150
Package Dissipation at T_A=25 ......... ..875 mW
Lead Temp. (Soldering, 10 seconds) ....... ...300
ESD Susceptibility (Note 10)............... 800V


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 of ADC1001 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.