AD1938YSTZ Analog Devices Inc, AD1938YSTZ Datasheet - Page 26

• 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

AD1938
Table 20. DAC Control Register 2
Bit
0
2:1
4:3
5
7:6
Table 21. DAC Individual Channel Mutes
Bit
0
1
2
3
4
5
6
7
Table 22. DAC Volume Controls
Bit
7:0
Value
0
1
00
01
10
11
00
01
10
11
0
1
00
Value
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Value
0
1 to 254
255
Function
Unmute
Mute
Flat
48 kHz curve
44.1 kHz curve
32 kHz curve
24
20
Reserved
16
Noninverted
Inverted
Reserved
Function
Unmute
Mute
Unmute
Mute
Unmute
Mute
Unmute
Mute
Unmute
Mute
Unmute
Mute
Unmute
Mute
Unmute
Mute
Function
No attenuation
−3/8 dB per step
Full attenuation
Rev. C | Page 26 of 32
Description
Master mute
De-emphasis (32 kHz/44.1 kHz/48 kHz mode only)
Word width
DAC output polarity
Description
DAC 1 left mute
DAC 1 right mute
DAC 2 left mute
DAC 2 right mute
DAC 3 left mute
DAC 3 right mute
DAC 4 left mute
DAC 4 right mute
Description
DAC volume control