LM4930LQBD National Semiconductor, LM4930LQBD Datasheet - Page 16

• Manufacturer Part Number: LM4930LQBD
• Description: BOARD EVALUATION LM4930LQ
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4930LQBD

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono) with Stereo Headphones
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm; 27mW x 2 @ 32 Ohm
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4930
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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t
f
f
SDAS
CLKPCM
CLKI2S
Symbol
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
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.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
derating currents for more information.
Note 4: Human body model: 100pF discharged through a 1.5kΩ 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 ≤ AV
Note 9: The sampling clock frequency is equal to the master clock frequency divided by 256. (f
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.
Note 16: 0dBm0 = -3dBFS for the PCM voice codec and 0dBm0 = -1dBFS for the I
Note 17: The given θ
16 thermal vias as described in National AN-1187.
SDA_DATA Setup Time
PCM_CLK Frequency
PCM_CLK Duty Cycle
I2S_CLK Frequency
I2S_CLK Duty Cycle
A
is for an LM4930 packaged in an LQA44A with the Exposed-DAP soldered to an exposed 2in
Parameter
DMAX
= (T
JMAX
– T
A
) / θ
PCM_SYNC_MODE = 00
PCM_SYNC_MODE = 01
PCM_SYNC_MODE = 10
I2S_RES = 0
I2S_RES = 1
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4930, see power
DD
DD
≤ 5.0 and 3.0V ≤ DV
= 3V, AV
Conditions
16
DD
2
S DAC, unless otherwise specified.
DD
≤ 3.6V. AV
= 3V, R
conv
DD
= f
must be equal to or greater than DV
JMAX
MCLK
LHP
,θ
/256)
JA
, and the ambient temperature, T
(Note 6)
Typical
2
= 32Ω, R
1.536
3.072
area of 1oz printed circuit board copper with
500
128
256
512
50
50
LM4930
(Notes 7,
Limits
15)
40
60
40
60
LHF
DD
. for proper operation.
= 8Ω
A
A
= 25˚C.
. The maximum
% (max)
% (max)
(Limits)
% (min)
% (min)
Units
MHz
MHz
kHz
kHz
kHz
ns