LM4550BVH/NOPB National Semiconductor, LM4550BVH/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM4550BVH/NOPB
• Description: IC AC '97 AUDIO CODEC 48-LQFP
• Manufacturer: National Semiconductor
• Type: Audio Codec '97r

Specifications of LM4550BVH/NOPB

• Data Interface: Serial
• Resolution (bits): 18 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 90 / 89
• Voltage - Supply, Analog: 4.2 V ~ 5.5 V
• Voltage - Supply, Digital: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 8
• No. Of Output Channels: 3
• Adc / Dac Resolution: 18bit
• Sampling Rate: 48kSPS
• Interface Type: Serial
• Supply Voltage Range: 3V To 5.5V, 4.2V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *LM4550BVH; *LM4550BVH/NOPB; LM4550BVH

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Analog to Digital Converters
Digital to Analog Converters
THD
D
Analog Output Section
A
A
THD+N
Z
Z
Digital I/O (Note 9)
V
V
V
V
I
I
I
Digital Timing Specifications (Note 9)
F
T
T
F
T
T
T
T
T
L
L
DR
OUT
OUT
BC
BCP
CH
SYNC
SP
SH
SL
DSETUP
DHOLD
S
M
IH
IL
OH
OL
Electrical Characteristics
kHz, single codec configuration, unless otherwise noted. Limits apply for T
otherwise specified. (Continued)
T
Symbol
Resolution
Dynamic Range (Note 9)
Frequency Response
Resolution
Dynamic Range (Note 9)
Total Harmonic Distortion
Frequency Response
Group Delay (Note 9)
Out of Band Energy (Note 10)
Stop Band Rejection
Discrete Tones
Step Size
Mute Attenuation
Headphone Amplifier Total
Harmonic Distortion plus Noise
Output Impedance (Note 9)
Output Impedance (Note 9)
High level input voltage
Low level input voltage
High level output voltage
Low level output voltage
Input Leakage Current
Tri state Leakage Current
Output drive current
BIT_CLK frequency
BIT_CLK period
BIT_CLK high
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
Setup Time for codec data input
Hold Time for codec data input
Parameter
(Notes 1, 5) The following specifications apply for AV
-60 dB Input THD+N, A-Weighted
-1 dB Bandwidth
-60 dB Input THD+N, A-Weighted
V
0 dB to -46.5 dB
Loopthrough Mode (Note 8), R
f = 1 kHz, P
HP_OUT_L, HP_OUT_R
LINE_OUT_L, LINE_OUT_R,
MONO_OUT
AC Link inputs
High impedance AC Link outputs
AC Link outputs
Variation of BIT_CLK duty cycle from
50%
SDATA_OUT to falling edge of BIT_CLK
Hold time of SDATA_OUT from falling
edge of BIT_CLK
IN
= -3 dB, f = 1 kHz, R
4
out
Conditions
= 50 mW
A
= 25˚C. The reference for 0 dB is 1 Vrms unless
L
= 10 kΩ
L
= 32 Ω,
20 - 21 k
DD
(Note 6)
Typical
12.288
0.01
0.02
TBD
TBD
81.4
20.8
19.5
-40
-96
1.5
1.3
18
90
20
18
89
70
86
48
= 5V, DV
5
LM4550
(Note 7)
DD
0.40 x
0.30 x
0.50 x
0.20 x
DV
DV
DV
DV
Limit
±
±
±
86
85
15
2
5
10
10
20
= 5V, Fs = 48
DD
DD
DD
DD
ms (max)
dB (min)
dB (min)
% (max)
(Limits)
ns (min)
ns (min)
V (max)
V (max)
V (min)
V (min)
Units
MHz
Bits
kHz
Bits
kHz
mA
Hz
dB
dB
dB
dB
dB
µA
µA
ns
µs
µs
µs
%
%
Ω
Ω