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LM4921 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM4921
Description  Low Voltage I2S 16-Bit Stereo DAC with Stereo Headphone Power Amplifiers and Volume Control
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4921 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Electrical Characteristics DV
DD = 3.0V, AVDD = 3.0V, RL =32Ω (Notes 1, 2)
The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T
A = 25˚C.
Symbol
Parameter
Conditions
LM4921
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 9)
DV
DD
Digital Power Supply Voltage
Note 8
3.0
V
AV
DD
Analog Power Supply Voltage
Note 8
3.0
V
DI
DD
Digital Power Supply Quiescent
Current
R
Load = ,fMLCK = 11.2896MHz
3.5
7.5
mA (max)
AI
DD
Analog Power Supply Quiescent
Current
R
Load = ,fMCLK = 0MHz
5
9.0
mA (max)
I
SD
Total Shutdown Power Supply
Current
SHUTDOWN SPI bits1&2set to
logic 0,
SPI, M
CLK and I
2S inputs at GND
1
uA(max)
I
SB
Standby Current
Analog and Digital together
All clocks off
15
uA
V
FS
Full-Scale Output Voltage
Gain set at max
2.6
V
P-P
THD+N
Total Harmonic Distortion + Noise
f
IN = 1kHz, POUT = 12mW
(Vol Cont = 11011, I
2S input adj to
get 12mW at output)
0.05
%
P
O
Headphone Amplifier Output Power THD = (0.5%), f
OUT = 1kHz
26
mW (min)
PSRR
Power Supply Rejection Ratio
AV
DD CBYPASS = 2.0µF
V
RIPPLE = 200mVP-P 217Hz
52
dB (min)
SNR
Signal-to-Noise Ratio
f
IN = 1kHz sinewave at -60dBFS,
A-weighted-f
CONV = 44.1kHz
79
dB
DR
Dynamic Range
f
IN = 1kHz sinewave at -60dBFS,
A-weighted
81
dB
∆A
CH-CH
Channel-to-Channel Gain Mismatch f
IN = 1kHz
0.06
dB
X
TALK
Channel-to-Channel Crosstalk
f
CONV = 44.1kHz,
f
IN = 1kHz sinewave at -3dBFS
72
dB
Volume Control Range
Minimum Attenuation
Maximum Attenuation
0
-43.5
dB
dB
Volume Control Control Step Size
1.5
dB
Mute Attenuation
-100
dB
www.national.com
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