Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-

tional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed speci-

fications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.

be limited to 25 mA. The 50 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of

25 mA to two.

junction-to-ambient thermal resistance

TSSOP,

this part is 98˚C/W for the EIAJ SOIC). Note that the power dissipation of this device under normal operation will typically be about 49 mW (33 mW quiescent power

+ 13 mW reference ladder power+3mWdue to 1 TTL loan on each digital output. The values for maximum power dissipation listed above will be reached only when

the ADC1173 is operated in a severe fault condition (e.g. when input or output pins are driven beyond the power supply voltages, or the power supply polarity is re-

versed). Obviously, such conditions should always be avoided.

Note 5: Human body model is 100 pF capacitor discharged through a 1.5k

Ω resistor. Machine model is 220 pf discharged through ZERO Ω.

Note 6: See AN450,

″Surface Mounting Methods and Their Effect on Product Reliability″, or the section entitled ″Surface Mount″ found in any post 1986 National

Semiconductor Linear Data Book, for other methods of soldering surface mount devices.

Note 7: The analog inputs are protected as shown below. Input voltage magnitudes up to 6.5V or to 500 mV below GND will not damage this device. However, errors

be

Level).

Note 10: At least two clock cycles must be presented to the ADC1173 after power up. See Section 4.0 for details.

DS100890-10

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