AD1981BBSTZ Analog Devices Inc, AD1981BBSTZ Datasheet - Page 31

• Manufacturer Part Number: AD1981BBSTZ
• Description: IC CODEC STEREO MICPREAMP 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1981BBSTZ

• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 4 / 2
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 90
• Voltage - Supply, Analog: 4.5 V ~ 5.5 V
• Voltage - Supply, Digital: 3 V ~ 3.47 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Adc/dac Resolution: 20Bit
• Number Of Adc's: 4
• Number Of Dac's: 2
• Interface Type: AC97
• Power Supply Type: Analog/Digital
• Operating Supply Voltage (min): 3/4.5V
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 3.47/5.5V
• Sample Rate: 48KSPS
• Pin Count: 48
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Screening Level: Industrial
• Package Type: LQFP
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

VENDOR ID REGISTERS
Index 0x7C–0x7E
Reg No.
0x7C
S[7:0] This register is ASCII encoded to A.
F[7:0] This register is ASCII encoded to D.
Reg No.
0x7E
T[7:0] This register is ASCII encoded to S.
REV[7:0] Vendor-specific revision number: The AD1981B assigns 0x74 to this field.
Table 44. Codec ID and External Clock Selection
ID1
1
1
0
0
Internally, the ID pins have weak pull-ups and are inverted.
Name
Vendor ID2
Name
Vendor ID1
ID0
1
0
1
0
D15
T7
Codec ID
(00) Primary
(01) Secondary
(00) Primary
(00) Primary
D15
F7
D14
T6
D14
F6
D13
T5
D13
F5
D12
T4
D12
F4
D11
T3
Codec Clocking Source
24.576 MHz
12.288 MHz
48.000 MHz
14.31818 MHz
D11
F3
D10
T2
Rev. C | Page 31 of 32
D10
F2
D9
T1
D8
T0
D9
F1
D7
REV7
Local crystal or external into XTL_IN.
External into BIT_CLK.
External into XTL_IN.
External into XTL_IN.
D8
F0
D6
REV6
D7
S7
D6
S6
D5
REV5
D5
S5
D4
REV4
D4
S4
D3
REV3
D3
S3
D2
REV2
D2
S2
D1
REV1
D1
S1
D0
REV0
S0
AD1981B
D0
Default
0x4144
Default
0x5374