LM9823CCWM datasheet(5/22 Pages) NSC

5 / 22 page

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AC Electrical Characteristics

The following specifications apply for AGND=DGND=0V, VA=+5.0VDC, VD=+3.0 or +5.0VDC, fMCLK=12MHz, except where noted

otherwise. Boldface limits apply for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7& 8)

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.

Note 2: All voltages are measured with respect to GND=AGND=DGND=0V, unless otherwise specified.

Note 3: When the input voltage (VIN) at any pin exceeds the power supplies (VIN<GND or VIN>VA or VD), the current at that pin should be limited to 25mA. The 50mA max-

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.

Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJmax, ΘJA and the ambient temperature, TA. The maximum allow-

able power dissipation at any temperature is PD = (TJmax - TA) / ΘJA. TJmax = 150°C for this device. The typical thermal resistance (ΘJA) of this part when board mounted

is 69°C/W for the M28B SOIC package

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

Ω resistor. Machine model, 200 pF capacitor discharged through a 0Ω 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.

Power Supply Characteristics

Analog Supply Current

Operating

108

mA (max)

Power Down

675

900

µA (max)

Digital Supply Current (Note 15)

Operating

210

475

µA (max)

Power Down

µA (max)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

fMCLK

Maximum MCLK frequency

MHz (min)

tMCLK

MCLK period

ns (min)

MCLK duty cycle

%(min)

%(max)

tSCLK

Serial Clock Period

tMCLK(min)

tSEN

Serial Enable high time

tMCLK(min)

tSSU

SDI setup time

ns (min)

tSH

SDI hold time

ns (min)

tSDDO

SCLK

edge to new valid data

VD = 5.0V

VD = 3.3V

8.5

ns (max)

tVSU

VSMP setup time

ns (min)

tVH

VSMP hold time

ns (min)

tCSU

CLMP setup time

ns (min)

tCH

CLMP hold time

ns (min)

tDDO

MCLK

edge to new valid data

VD = 5.0V

VD = 3.3V

ns (max)

DC and Logic Electrical Characteristics (Continued)

The following specifications apply for AGND=DGND=0V, VA=+5.0VDC, VD=+3.0 or +5.0VDC, fMCLK=12MHz. Boldface limits apply

for TA=TJ=TMIN to TMAX; all other limits TA=TJ=25°C. (Notes 7 & 8)

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

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