AD1939YSTZRL Analog Devices Inc, AD1939YSTZRL Datasheet - Page 29
![4-ADC 8-DAC Audio Codec W/on Chip PLL](/photos/6/60/66065/505-64-lqfp_sml.jpg)
AD1939YSTZRL
Manufacturer Part Number
AD1939YSTZRL
Description
4-ADC 8-DAC Audio Codec W/on Chip PLL
Manufacturer
Analog Devices Inc
Type
General Purposer
Datasheet
1.AD1939YSTZ.pdf
(32 pages)
Specifications of AD1939YSTZRL
Data Interface
Serial
Resolution (bits)
24 b
Number Of Adcs / Dacs
4 / 8
Sigma Delta
Yes
S/n Ratio, Adcs / Dacs (db) Typ
94 / 94
Dynamic Range, Adcs / Dacs (db) Typ
105 / 110
Voltage - Supply, Analog
3 V ~ 3.6 V
Voltage - Supply, Digital
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AD1939YSTZRL
Manufacturer:
Analog Devices Inc
Quantity:
10 000
ADDITIONAL MODES
The AD1939 offers several additional modes for board level
design enhancements. To reduce the EMI in board level design,
serial data can be transmitted without an explicit BCLK. See
Figure 27 for an example of a DAC TDM data transmission
mode that does not require high speed DBCLK. This configura-
tion is applicable when the AD1939 master clock is generated
by the PLL with the DLRCLK as the PLL reference frequency.
TDM-DSDATAx
DSDATAx
DLRCLK
INTERNAL
INTERNAL
DBCLK
DSDATAx
DLRCLK
DLRCLK
DBCLK
DBCLK
(Applicable Only If PLL Locks to DLRCLK, This Mode Is Also Available in the ADC Serial Data Port)
MSB
(Applicable in Stereo and TDM, Useful for High Frequency TDM Transmission,
Figure 27. Serial DAC Data Transmission in TDM Format Without DBCLK
32 BITS
Figure 28. I
This Mode Is Also Available in the ADC Serial Data Port)
DATA MUST BE VALID
AT THIS BCLK EDGE
2
S Pipeline Mode in DAC Serial Data Transmission
Rev. C | Page 29 of 32
To relax the requirement for the setup time of the AD1939 in
cases of high speed TDM data transmission, the AD1939 can
latch in the data using the falling edge of DBCLK. This effec-
tively dedicates the entire BCLK period to the setup time. This
mode is useful in cases where the source has a large delay time
in the serial data driver. Figure 28 shows this pipeline mode of
data transmission.
Both the BCLK-less and pipeline modes are available on the
ADC serial data port.
AD1939