Electrical Characteristics DV

(Notes 1, 2, 3) (Continued)

The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T

Symbol

Parameter

Conditions

LM4930

Units

(Limits)

Typical

(Note 6)

Limits

(Notes 7,

15)

t

SDAS

SDA_DATA Setup Time

500

ns

f

CLKPCM

PCM_CLK Frequency

PCM_SYNC_MODE = 00

PCM_SYNC_MODE = 01

PCM_SYNC_MODE = 10

128

256

512

kHz

kHz

kHz

PCM_CLK Duty Cycle

50

40

60

% (min)

% (max)

f

CLKI2S

I2S_CLK Frequency

I2S_RES = 0

I2S_RES = 1

1.536

3.072

MHz

MHz

I2S_CLK Duty Cycle

50

40

60

% (min)

% (max)

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. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which

guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit

is given, however, the typical value is a good indication of device performance.

Note 2: All voltages are measured with respect to the relevant GND pin unless otherwise specified.

derating currents for more information.

Note 4: Human body model: 100pF discharged through a 1.5k

Ω resistor.

Note 5: Machine model: 220pF - 240pF discharged through all pins.

Note 6: Typicals are measured at 25˚C and represent the parametric norm.

Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 8: Best operation is achieved by maintaining 3.0V

Note 10: This value represents the 0dB output level of the given amplifier for the given analog supply voltage. Gain values given in the GAINCONFIG register are

relative to these full-scale values for each output amplifier.

Note 11: To ensure a successful transistion into Powerdown Mode, ZXD_DISABLE must be set whenever there is no audio input signal present.

Note 12: It is recommended to alter this bit only while the part is in Powerdown Mode.

Note 13: Reserved bits should be set to zero when programming the associated register.

Note 14: With the exception of Standby Mode, rapid switching between modes should be avoided. Rapid switching between modes will not ensure that the desired

mode will be activated.

Note 15: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

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