AD1981B |
RFQ for AD1981B Required Field |
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| Technical/Catalog Information | AD1981BBSTZ |
| Vendor | Analog Devices Inc |
| Category | Integrated Circuits (ICs) |
| Type | Audio Codec '97 |
| Number of ADCs / DACs | 4 / 2 |
| Dynamic Range, ADCs / DACs (db) Typ | 85 / 90 |
| S/N Ratio, ADCs / DACs (db) Typ | - |
| Resolution (Bits) | 16, 20 b |
| Voltage - Supply, Analog | 4.5 V ~ 5.5 V |
| Voltage - Supply, Digital | 3.0V ~ 3.47V |
| Mounting Type | Surface Mount |
| Package / Case | 48-LQFP |
| Packaging | Tray |
| Operating Temperature | -40°C ~ 85°C |
| Sigma Delta | No |
| Interface | Serial |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | AD1981BBSTZ AD1981BBSTZ |
| Product | Manufacturers | Pack | D/C |
| AD1981B | Analog Devices | QFP | 0520+ |
The AD1981B is used to add analog and digital audio capabilities to computer motherboards by connecting directly to the core logic. By reusing existing systems resources, this solution adds
Features |
| AC '97 2.3 COMPATIBLE FEATURES`S/PDIF Output, 20 Bits Data Format, Supporting`48 kHz and 44.1 kHz Sample Rates`Integrated Stereo Headphone Amplifier`Variable Sample Rate Audio`External Audio Power-Down Control`Greater than 90 dB Dynamic Range`Stereo Full-Duplex Codec`20-Bit PCM DAC`3 Analog Line-Level Stereo Inputs for`Line-In, AUX, and CD`Mono Line-Level Phone Input`Dual MIC Input with Built-In Programmable Preamp`High Quality CD Input with Ground Sense`Mono Output for Speakerphone or Internal Speaker`Power Management Support`48-Lead LQFP Package, Lead-Free AvailableENHANCED FEATURES`Stereo MIC Preamps Support`Built-In Digital Equalizer Function for Optimized`Speaker Sound`Full-Duplex Variable Sample Rates from 7040 Hz to`48 kHz with 1 Hz Resolution`Jack Sense Pins Provide Automatic Output Switching`Software Programmed VREFOUT Output for Biasing`Microphone and External Power Amp`Split Power Supplies: 3.3 V Digital and 5 V Analog`Multiple Codec Configuration Options |
Power Supplies
Digital (DVDD) . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +3.6 V
Analog (AVDD) . . . . . . . . . . . . . . . . . . . . . .0.3 V to +6.0 V
Input Current (Except Supply Pins) . . . . . . . .. . . . . ±10 mA
Signals Pins
Digital Input Voltage . . . . . . . . . . .. 0.3 V to DVDD + 0.3 V
Analog Input Voltage . . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Ambient Temperature Range (Operating) . . . 0°C to 70°C
*Stresses greater than those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
