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

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

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

imum package input current rating limits the number of pins that can simultaneously safely exceed the power supplies with an input current of 25mA to two.

is 53°C/W

.

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

Ω resistor.

Note 6: See AN450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in any National Semiconductor Linear

Data Book for other methods of soldering surface mount devices.

Note 7: Two diodes clamp the OS analog inputs to

impedance of the sensor, prevents damage to the LM9830 from transients during power-up.

Note 8: For best performance, it is required that all supply pins be powered from the same power supply with separate bypass capacitors at each supply pin.

Note 10: Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level).

Note 11: Integral linearity error is defined as the deviation of the analog value, expressed in LSBs, from the straight line that best fits the actual transfer function of the ADC.

SRAM Write Timing (Figure 8) - Typical Values Represent Worst Case Timing for Different MCLK Frequencies

SETUP

Address valid to WR falling

- 7ns

3

ns (min)

SETUP

Address valid to WR rising

- 9ns

21

ns (min)

- 9ns

11

ns (min)

WR pulse width

- 5ns

15

ns (min)

- 4ns

2

ns (min)

WR rising to DB0-DB7 data Tri-State

1

4

ns (max)

SRAM Read Timing (Figure 9) - Typical Values Represent Worst Case Timing for Different MCLK Frequencies

Address valid to DB0-DB7 data valid

4 slot mode

28

ns (max)

8 slot mode

AC Electrical Characteristics

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

OS Input

AGND

VA

To Internal

Circuitry