LM4546BVH/NOPB National Semiconductor, LM4546BVH/NOPB Datasheet - Page 9

• Manufacturer Part Number: LM4546BVH/NOPB
• Description: IC AUDIO CODEC 2MULTICH 48-LQFP
• Manufacturer: National Semiconductor
• Type: Audio Codec '97r

Specifications of LM4546BVH/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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4546BVH

Connection Diagram
Pin Descriptions
PC_BEEP
PHONE
Name
CD_L
Pin
12
13
18
I / O
I
I
I
Functional Description
Mono Input
This line level (1 Vrms nominal) mono input is mixed equally into both channels of the Stereo
Mix signal at MIX2 under the control of the PC_Beep Volume control register, 0Ah. The
PC_BEEP level can be muted or adjusted from 0 dB to -45 dB in 3 dB steps. The Stereo Mix
signal feeds both the Line Out and Line Level Out analog outputs and is also selectable at
the Record Select Mux.
Mono Input
This line level (1 Vrms nominal) mono input is mixed equally into both channels of the Stereo
Mix signal at MIX2 under the control of the Phone Volume register, 0Ch. The PHONE level
can be muted or adjusted from +12 dB to -34.5 dB in 1.5 dB steps. The Stereo Mix signal
feeds both the Line Out and Line Level Out analog stereo outputs and is also selectable at
the Record Select Mux.
Left Stereo Channel Input
This line level input (1 Vrms nominal) is selectable at the left channel of the stereo Input Mux
for conversion by the left channel ADC. It can also be mixed into the left channel of the
Stereo Mix 3D signal at MIX1 under the control of the CD Volume register, 12h. The CD_L
level can be muted (along with CD_R) or adjusted from +12 dB to -34.5 dB in 1.5 dB steps.
Stereo Mix 3D is mixed into the Stereo Mix signal at MIX2 for access to the stereo outputs
Line Out and Line Level Out.
See NS Package Number VBH48A
Order Number LM4546BVH
ANALOG I/O
Top View
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