AD1938YSTZ Analog Devices Inc, AD1938YSTZ Datasheet - Page 21

• Manufacturer Part Number: AD1938YSTZ
• Description: IC CODEC 24BIT 4ADC/8DAC 48LQFP
• Manufacturer: Analog Devices Inc
• Type: General Purposer

Specifications of AD1938YSTZ

• 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 / 106
• 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: 48-LQFP
• Audio Codec Type: Audio
• No. Of Adcs: 4
• No. Of Dacs: 8
• No. Of Input Channels: 4
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 108dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

OF THE SECOND AD193x
OF THE SECOND AD193x
SDATA
SDATA
SDATA
SDATA
LRCLK
LRCLK
LRCLK
LRCLK
ASDATA1 (TDM_OUT
BCLK
BCLK
BCLK
BCLK
ASDATA2 (TDM_IN
IN THE CHAIN)
IN THE CHAIN)
NOTES
1. DSP MODE DOES NOT IDENTIFY CHANNEL.
2. LRCLK NORMALLY OPERATES AT
3. BCLK FREQUENCY IS NORMALLY 64 × LRCLK BUT MAY BE OPERATED IN BURST MODE.
ALRCLK
ABCLK
MSB
AD193x
FIRST
MSB
MSB
ADC L1 ADC R1 ADC L2 ADC R2 ADC L1 ADC R1 ADC L2 ADC R2
ADC L1 ADC R1 ADC L2 ADC R2
SECOND IC IN THE CHAIN
SECOND
4 ADC CHANNELS OF
AD193x
MSB
Figure 22. ADC TDM Daisy-Chain Mode (512 f
LEFT CHANNEL
LEFT CHANNEL
LEFT CHANNEL
DSP
f
S
RIGHT-JUSTIFIED MODE—SELECT NUMBER OF BITS PER CHANNEL
EXCEPT FOR DSP MODE WHICH IS 2 ×
LEFT-JUSTIFIED MODE—16 BITS TO 24 BITS PER CHANNEL
I
2
S-JUSTIFIED MODE—16 BITS TO 24 BITS PER CHANNEL
LSB
DSP MODE—16 BITS TO 24 BITS PER CHANNEL
FIRST IC IN THE CHAIN
4 ADC CHANNELS OF
Figure 23. Stereo Serial Modes
LSB
LSB
Rev. C | Page 21 of 32
LSB
1/
f
S
MSB
S
f
S
BCLK, Two-AD193x Daisy Chain)
.
MSB
MSB
MSB
32 BITS
MSB
RIGHT CHANNEL
RIGHT CHANNEL
RIGHT CHANNEL
LSB
LSB
LSB
LSB
AD1938