AD1984JCPZ Analog Devices Inc, AD1984JCPZ Datasheet - Page 11

IC CODEC HD AUDIO 4CH 48-LFCSP

AD1984JCPZ

Manufacturer Part Number
AD1984JCPZ
Description
IC CODEC HD AUDIO 4CH 48-LFCSP
Manufacturer
Analog Devices Inc
Series
SoundMAX®r
Type
Audio Codec, HDr
Datasheet

Specifications of AD1984JCPZ

Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
4 / 4
Sigma Delta
No
Voltage - Supply, Analog
3.13 V ~ 3.46 V
Voltage - Supply, Digital
2.97 V ~ 3.63 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-VFQFN, CSP Exposed Pad
Single Supply Voltage (typ)
3.3V
Single Supply Voltage (min)
2.97/3.13V
Single Supply Voltage (max)
3.46/3.63V
Package Type
LFCSP EP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Table 3. AD1984 Pin Descriptions (Continued)
Mnemonic
FILTER/REFERENCE
POWER AND GROUND
The symbols used in this table are defined as: I = Input, O = Output, LI = Line Level Input, LO = Line Level Output, HP = Output capable of
driving headphone load, MIC = Input supports microphones with MIC bias and boost amplifier.
V
MIC_BIAS-B
MIC_BIAS-C
DV
DV
DV
DV
AV
MIC_BIAS_IN
5.0 V or 3.3 V
AV
REF
DD
SS
CORE
IO
SS
DD
_FILT
3.3V
3.3 V
3.3 V
Pin No.
27
28
29
1
3
7
9
25, 38
33
26, 42
I/O
O
O
O
O
I
I
I
I
I
I
Rev. 0 | Page 11 of 20 | January 2007
Description
Voltage Reference Filter.
Switchable Microphone Bias. For use with Port B (Pins 21, 22).
Switchable Microphone Bias. For use with Port C (Pins 23, 24).
Both MIC bias pins are capable of Hi-Z, 0 V, 1.65 V, 3.7 V, and 3.9 V (with 5.0 V on
Pin 33), Hi-Z, 0 V, 1.65 V, 2.86 V, and 3.0 V (with 3.3 V on Pin 33).
CAUTION: DO NOT APPLY 3.3 V TO THIS PIN!
Filter connection for internal core voltage regulator. This pin must be connected to
filter caps: 10 F, 1.0 F, and 0.1 F connected in parallel between Pin 1 and
D
Link Digital I/O Voltage Reference. 3.3 V
Digital supply return (ground).
Digital supply voltage 3.3 V . This is regulated down to DV
internal digital core internal to the AD1984.
CAUTION: DO NOT APPLY 5 V TO THESE PINS!
Analog supply voltage 3.3 V ONLY.
Note: AV
audio performance.
Source power for microphone bias boost circuitry.
Connect this pin to 5.0 V via a low-pass filter. When connected this way the AD1984 is
capable of providing +3.9 V as a mic bias to all of the mic bias pins (except on
Pin 31).
If 5 V is not available, connect this pin to +3.3 V (AV
The AD1984 produces a mic bias voltage relative to the AV
(typically 3.0 V @ AV
Analog supply return (ground). AV
trace under, or close to, the AD1984.
VSS
(Pin 7).
DD
supplies should be well regulated and filtered as supply noise degrades
DD
= 3.3 V).
SS
should be connected to DV
DD
) via a low-pass filter.
CORE
DD
supply
on Pin 1 to supply the
SS
using a conductive
AD1984

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