ADC9708 NSC | Alldatasheet

Document overview

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Technical content

Features

Y Excellent linearity over full temperature range g0.2% maximum Y Typical 300 ms conversion time per channel Y Wide dynamic range includes ground Y Auto-zero and full-scale correction capability Y Ratiometric conversionÐno precision reference required Y Single-supply operation Y TTL compatible Y Does not require access to data bus or address bus Connection Diagram All Packages TL/H/10409–2 (Top View)

Ordering Information

Commercial (0 §C s TA s 70§C) Package ADC9708CCN N16E ADC9708CCJ J16A Military ( b55§C s TA s 125§C) Package ADC9708CMJ J16A Block Diagram TL/H/10409–1 C1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage (V CC) 18V Comparator Output (Ramp Stop) b0.3V to a18V Analog Input Range b0.3V to a30V Digital Input Range b0.3V to a30V Output Sink Current 10 mA Storage Temperature Range b65§Ct o a150§C Continuous Total Dissipation (Note 8) Ceramic DIP Package 900 mW Molded DIP Package 1000 mW ESD Susceptibility (Note 9) TBD Pin Temperature Ceramic DIP (Soldering, 60 Sec.) 300 Molded DIP (Soldering, 10 Sec.) 260 §C Operating Ratings (Notes 1, 2) Operating Temperature Range ADC9708CCN, ADC9708CCJ 0 §Ct o a70§C ADC9708CMJ b55§Ct o a125§C Supply Voltage (V CC) 4.75V to 15V Reference Voltage (VREF) (Note 3) 2.8V to 5.25V Ramp Capacitor (C H) 300 pF Reference Current (I R)1 2 mAt o5 0 mA Analog Input Range 0V to V REF Ramp Stop Output Current 1.6 mA

Electrical Characteristics

Over recommended operating conditions, V CC e 5.0V, b55§C s TA s a125§C for ADC9708CMJ and 0 §C s TA s a70§C for ADC9708CCJ or ADC9708CCN; unless otherwise specified. Symbol Parameter Conditions Typical Limit Units (Note 10) (Note 11) (Limit) EA Conversion Accuracy Over Entire Temperature g0.2 g0.3 % (max)Range (Note 4) ER Linearity Applies to Any One g0.08 g0.2 % (max)Channel (Note 5) VOSM Multiplexer Input Offset Voltage Channel ON, T A e 25§C 2.0 4.0 mV (max) Channel ON 2.0 7.0 mV (max) tC Conversion Time per Channel Analog Input e 0V to V REF 296 350 ms (max)CH e 300 pF, I REF e 50 mA tA Acquisition Time C H e 1000 pF 20 40 ms (max) IA Acquisition Current ADC9708CCN, CCJ 150 mA (min) ADC9708CMJ 115 mA (min) tO Ramp Start Delay Time 100 ns tM Multiplexer Address Time 1.0 ms VIH Digital Input HIGH Voltage A0, A1, A2, Ramp Start 2.0 V (min) VIL Digital Input LOW Voltage A0, A1, A2, Ramp Start 0.8 V IB Analog Input Current Channel ON or OFF b1.0 b3.0 mA (min) IIL Input LOW Current A0, A1, A2, Ramp Start e 0.4V b5 b15 mA (min) IIH Input HIGH Current A0, A1, A2, Ramp Start e 5.5V 1.0 mA (max) IOS Input Offset Current 1.0 3.0 mA (max) IOH Comparator Logic ‘‘1’’ V OH e 15V 10 mA (max)Output Leakage Current VOL Comparator Logic ‘‘0’’ Output I OL e 1.6 mA 0.4 V (max)Voltage PSRR Power Supply Rejection Ratio (Note 6) 40 dB (min) Cross Talk between (Note 7) 60 dB (min)Any Two Channels

FIGURE 3. Linearity/Acquisition Time/ FIGURE 4. Static Measurements grator and comparator on a single monolithic chip. fer to the Functional Block Diagram. analog input voltage and the external capacitor.

001 I 1

010 I 2

011 I 3

100 I 4

101 I 5

110 I 6

Physical Dimensions inches (millimeters) Dual-In-Line Package (J) Order Number ADC9708CCJ or ADC9708CMJ

ADC9708 6-Channel 8-Bit mP Compatible A/D Converter Physical Dimensions inches (millimeters) (Continued)

16 Lead Dual-In-Line Package (N)

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