AD1984BJCPZ-RL Analog Devices Inc, AD1984BJCPZ-RL Datasheet - Page 11

• Manufacturer Part Number: AD1984BJCPZ-RL
• Description: IC CODEC HD AUDIO 4CH 48-LFCSP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec, HDr

Specifications of AD1984BJCPZ-RL

• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 4. Pin Function Descriptions (Continued)
Mnemonic
FILTER/MIC_BIAS
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
MIC_BIAS_IN
DV
FILTER
DV
DV
DV
AV
AV
5.0 V or 3.3 V
REF
DD
SS
CORE
IO
SS
DD
_FILT
3.3 V
3.3 V
1.7 V to 1.9 V or 3.3 V 9
1.7 V to 1.9 V or
Pin No.
27
28
29
33
1
3
7
25, 38
26, 42
I/O
O
O
O
I
I/O
I
I
I
I
I
Rev. 0 | Page 11 of 20 | February 2008
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 High-Z, 0 V, 1.65 V, 3.7 V, and 3.9 V (with 5.0 V on
Pin 33), High-Z, 0 V, 1.65 V, 2.86 V, and 3.0 V (with 3.3 V on Pin 33).
Source Power for Microphone Bias Boost Circuitry.
Connect this pin to 5.0 V via a low-pass filter. When connected this way the AD1984B
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
CAUTION: DO NOT APPLY 3.3 V TO THIS PIN! Filter connection for internal core
voltage regulator.
If Pin 9 is connected to 3.3 V DV
1.0 μF and 0.1μF connected in parallel between Pin 1 and DV
1.7 V to 1.9 V DV
Pin 9 MUST be connected to pin 1 in this case.
Link Digital I/O Voltage Reference. 3.3 V ± 10%
Digital Supply Return (Ground).
Digital Supply Voltage 3.3 V ± 10%. This is regulated down to DV
supply the internal digital core internal to the AD1984B. Direct, filtered 1.7 V to 1.9 V
DV
connected to Pin 1 in this case.
CAUTION: DO NOT APPLY 5 V TO THESE PINS! Analog Supply Voltage 3.3 V ONLY.
Note: AV
audio performance.
Analog Supply Return (Ground). AV
conductive trace under, or close to, the AD1984B.
DD
may be applied to Pin 1 to lower the digital power requirements. Pin 9 MUST be
DD
supplies should be well regulated and filtered as supply noise degrades
DD
may be applied to Pin 1 to lower the digital power requirements.
DD
, this pin must be connected to filter caps: 10 μF,
SS
should be connected to DV
DD
) via a low-pass filter.
SS
(Pin 7). Direct, filtered
CORE
SS
using a
AD1984B
on Pin 1 to