ADAU1381BCPZ Analog Devices Inc, ADAU1381BCPZ Datasheet - Page 52

• Manufacturer Part Number: ADAU1381BCPZ
• Description: IC AUDIO CODEC STEREO LN 32LFCSP
• Manufacturer: Analog Devices Inc
• Type: Stereo Audior

Specifications of ADAU1381BCPZ

• Data Interface: Serial, SPI™
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 97 / 100
• Dynamic Range, Adcs / Dacs (db) Typ: 96.5 / 100
• Voltage - Supply, Analog: 1.8 V ~ 3.65 V
• Voltage - Supply, Digital: 1.63 V ~ 3.65 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, CSP Exposed Pad
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 3
• No. Of Output Channels: 3
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 100dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADAU1381
Register 16400 (0x4010), Microphone Bias Control and
Beep Enable
Bit 4, Beep Input Enable
This bit enables the beep signal, which is input to the BEEP pin.
Setting this bit to 0 mutes the beep signal for all output paths.
Bit 3, Microphone High Performance
This bit puts the microphone bias into high performance mode,
by offering more current to the microphone.
Table 39. Microphone Bias Control and Beep Enable Register
Bits
[7:5]
4
3
2
1
0
Description
Reserved
Beep input enable
0: disabled
1: enabled
Microphone high performance
0: high power
1: low performance
Microphone gain
0: enabled
1: disabled
Reserved
Microphone bias enable
0: disabled
1: enabled
Rev. B | Page 52 of 84
Bit 2, Microphone Gain
Provides two voltage bias options, 0.65 × AVDD1 and 0.90 ×
AVDD1. A higher bias contributes to a higher microphone gain.
The maximum current that can be drawn from MICBIAS is 5 mA.
Bit 0, Microphone Bias Enable
This bit enables the MICBIAS output.
Default
0
0
0
0