IC CODEC STEREO 5V 16BIT 68PLCC

AD1845JPZ

Manufacturer Part NumberAD1845JPZ
DescriptionIC CODEC STEREO 5V 16BIT 68PLCC
ManufacturerAnalog Devices Inc
TypeStereo Audio
AD1845JPZ datasheet
 


Specifications of AD1845JPZ

Resolution (bits)16 bNumber Of Adcs / Dacs2 / 2
Sigma DeltaYesDynamic Range, Adcs / Dacs (db) Typ81 / 82
Voltage - Supply, Analog4.75 V ~ 5.25 VVoltage - Supply, Digital4.75 V ~ 5.25 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case68-PLCCSingle Supply Voltage (typ)5V
Single Supply Voltage (min)4.75VSingle Supply Voltage (max)5.25V
Package TypePLCCLead Free Status / RoHS StatusLead free / RoHS Compliant
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Clock and Data Format Register (IXA3:0 = 8)
IXA3:0
Data 7
8
FMT1
FMT0
NOTE: Placing the AD1845 in the Mode Change Enable (MCE) state is not required when changing the sample rate. However,
changes to FMT[1:0], C/L, and S/M require MCE or setting PEN = 0.
CSS
Clock Source Select. This bit in conjunction with CFS2:0 selects the audio sample rate frequency. See Figure 8
below. Note: MODE2 allows a wider range of sample rate frequencies to be selected by using the Frequency
Select Register (refer to Registers 22 and 23).
CFS2:0
Clock Frequency Divide Select. These bits in conjunction with CSS select the audio sample frequency.
CFS2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
S/M
Stereo/Mono Select. This bit determines how the audio data streams are formatted. Selecting stereo will result
with alternating samples representing left and right audio channels. Mono playback plays the same audio sample
on both channels. Mono capture only captures data from the left audio channel.
0
Mono
1
Stereo
C/L
Companded/Linear Select. This bit selects between a linear digital representation of the audio signal or a nonlinear,
companded format for all input and output data. The type of linear PCM or the type of companded format is
defined by the FMT bits.
0
Linear PCM
1
Companded
FMT[1:0]
Format Select. The bits define the format for all digital audio input and outputs based on the state of the C/L bit.
See Figure 9 for FMT and C/L bit settings that determine the audio data type format.
res
Reserved for future expansion. Always write a zero to this bit.
This register’s initial state after reset is “0000 0000.”
FMT1
FMT0
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
REV. C
Data 6
Data 5
Data 4
Data 3
C/L
S/M
CFS2
CFS1
CFS0
CSS
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Figure 8. MODE1 Audio Sample Frequency Select
C/L
Audio Data Type
0
Linear, 8-Bit Unsigned PCM
1
-Law, 8-Bit Companded
0
Linear, 16-Bit Twos-Complement PCM Little Endian
1
A-Law, 8-Bit Companded
0
Reserved
1
Reserved
0
Linear, 16-Bit Twos Complement Big Endian
1
Reserved
Figure 9. Digital Audio Data Type
–19–
AD1845
Data 2
Data 1
Data 0
CFS1
CFS0
CSS
Sample Rate
8.0
kHz
5.5125
kHz
16.0
kHz
11.025
kHz
27.42857 kHz
18.9
kHz
32.0
kHz
22.05
kHz
Reserved
37.8
kHz
Reserved
44.1
kHz
48.0
kHz
33.075
kHz
9.6
kHz
6.615
kHz