ADAU1381BCPZ Analog Devices Inc, ADAU1381BCPZ Datasheet - Page 29

• 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

The ADC and DAC sampling rate can be set in Register 16407
(0x4017), Converter Control 0, Bits[2:0], converter sampling
rate. The sound engine sampling rate and serial port sampling
rate are similarly set in Register 16619 (0x40EB), sound engine
frame rate, Bits[3:0], sound engine frame rate, and Register
16632 (0x40F8), serial port sampling rate, Bits[2:0], serial port
control sampling rate, respectively.
Table 18 and Table 19 depict example sampling rate settings.
The (1 × 256) case is the base sampling rate.
Rev. B | Page 29 of 84
Table 18. Sampling Rates for 256 × 48 kHz Core Clock
Core Clock
12.288 MHz
Table 19. Sampling Rates for 256 × 44.1 kHz Core Clock
Core Clock
11.2896 MHz
(1 × 256)
(6 × 256)
(4 × 256)
(3 × 256)
(2 × 256)
(1.5 × 256)
(0.5 × 256)
(1 × 256)
(6 × 256)
(4 × 256)
(3 × 256)
(2 × 256)
(1.5 × 256)
(0.5 × 256)
Sampling Rate Divider
Sampling Rate Divider
Sampling Rate
48 kHz
8 kHz
12 kHz
16 kHz
24 kHz
32 kHz
96 kHz
Sampling Rate
44.1 kHz
7.35 kHz
11.025 kHz
14.7 kHz
22.05 kHz
29.4 kHz
88.2 kHz
ADAU1381