The PCM1772 and PCM1773 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, lineout circuitry, and support circuitry in small TSSOP-16 and VQFN-20 packages

PCM1772

Manufacturer Part NumberPCM1772
DescriptionThe PCM1772 and PCM1773 devices are CMOS, monolithic, integrated circuits which include stereo digital-to-analog converters, lineout circuitry, and support circuitry in small TSSOP-16 and VQFN-20 packages
ManufacturerTexas Instruments
PCM1772 datasheet
 


Specifications of PCM1772

# Dacs2# Inputs / # Outputs0 / 2
ArchitectureMultilevel Delta-SigmaResolution(bits)24
Sampling Rate(max)(khz)48Control InterfaceSPI
Digital Audio InterfaceL,R,I2SThd+n(typ)(%)0.007
Dac Snr(typ)(db)98Power Consumption(typ)(mw)6.5
Operating Temperature Range(c)0 to 70Analog Voltage Av/dd(min)(v)1.6
Analog Voltage Av/dd(max)(v)3.6Pin/package16TSSOP, 20VQFN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Page 21
22
Page 22
23
Page 23
24
Page 24
25
Page 25
26
Page 26
27
Page 27
28
Page 28
29
Page 29
30
Page 30
31
32
33
34
35
36
37
Page 26/37

Download datasheet (642Kb)Embed
PrevNext
PCM1772, PCM1773
SLES010G – SEPTEMBER 2001 – REVISED MARCH 2007
B15
B14
B13
B12
B11
0
IDX6
IDX5
IDX4
IDX3
IDX[6:0]: 000 0100b
ZCAT: Zero Cross Attenuation
Default Value: 0
ZCAT = 0
Normal attenuation (default)
ZCAT = 1
Zero cross attenuation
This bit enables changing the signal level on zero crossing during attenuation control or muting. If the signal
does not cross BPZ beyond 512/f
to normal attenuation control. This function is independently monitored for each channel; moreover, change of
signal level is alternated between both channels.
L-Channel
(1.5 kHz)
R-Channel
(1 kHz)
Figure 28. Example of Zero Cross Attenuation
PWRD: Power Down Control
Default Value: 0
PWRD = 0
Normal operation (default)
PWRD = 1
Power-down state
This bit is used to enter into low-power mode. Note that PWRD has no reset function.
When this bit is set to 1, the PCM1772 device enters low-power mode, and all digital circuits are reset except
the register states, which remain unchanged.
26
Register 04
B10
B9
B8
B7
B6
IDX2
IDX1
IDX0
RSV
RSV
(11.6 ms at the 44.1-kHz sampling rate), the signal level is changed similarly
S
Figure 28
shows an example of zero cross attenuation.
ATT CTRL START
Submit Documentation Feedback
www.ti.com
B5
B4
B3
B2
B1
RSV
ZCAT
RSV
RSV
RSV
Level Change Point
W0001-01
B0
PWRD