HD Audio SoundMAX® Codec AD1983 FEATURES ENHANCED FEATURES 2 DAC channels: 16-, 20-, or 24-bit 2 ADC channels: 16- or 20-bit HD audio sample rates 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz Greater than 90 dB dynamic range S/PDIF output: 32 kHz, 44.1 kHz, or 48 kHz, 16- or 24-bit Digital BEEP generator Integrated headphone amplifiers Selectable microphone inputs with preamplifiers Stereo line level inputs Full analog mixer No AFILT pins, results in BOM savings Jack sensing autoconfiguration options Mute line output and monaural output (MONO_OUT) when headphones are used Mute MONO_OUT when a device is in the line out jack Selectable sense trip level: high/low supports all jack types Peripheral identification/enumeration Jack presence detection: HD Audio SENSE and GPIOs Microphone to MONO_OUT for speakerphone Advanced power management modes 2 software-controlled microphone bias pins Stereo microphone array capture Source from two different ports 0 dB, 10 dB, 20 dB, and 30 dB boost options 2 GPIOs for external circuit control, jack sense 32-lead, Pb-free LFCSP_VQ (QFN) package FUNCTIONAL BLOCK DIAGRAM NID: 01 GPIO_0/JS_1 GPIO GPIO_1/JS_0 JACK SENSE SENSE_A SENSE_SRC AVDD NID: 02 16-, 20-, 24-BIT 32kHz, 44.1kHz, 48kHz PCM/AC3 S/PDIF TX NID: 0A S/PDIF_OUT DIGITAL PCBEEP +5.0V AVSS NID: 10 G M 0dB TO –45.0dB 3dB STEPS NID: 03 NID: 06 SELECTOR 2:1 24-BIT 48kHz PCM Σ-Δ DAC SDATA_IN SDATA_OUT GA Σ –46.5dBTO +3dB –34.5dB TO +12dB M HP PORT-A HEADPHONE OUTPUT_EN NID: 05 SELECTOR 2:1 NID: 11 GA GA Σ M –46.5dBTO +3dB Z OUTPUT_EN PORT-D FRONT NID: 0B SELECTOR 4:1 BIT_CLK HD AUDIO INTERFACE SYNC RESET M NID: 0E Σ NID: 07 Σ NID: 0F GA M MONO_OUT –46.5dBTO +3dB BIAS_SEL –34.5dB TO +12dB M –34.5dB TO +12dB M NID: 0D MIC BIAS NID: 09 Z MIC_BIAS-C GA NID: 13 PORT-C LINE IN NID: 04 M G BIAS_SEL NID: 0C BOOST 0dB TO +22.5dB 0dB, 10dB, 20dB, 30dB MIC BIAS NID: 08 Z MIC_BIAS-B BIAS_EN PORT-B MIC 05205-001 20-BIT 48kHz PCM/FLOAT32 Σ-Δ ADC SELECTOR 2:1 DVSS GA NID: 12 SELECTOR 4:1 +3.3V DVDD SELECTOR 2:1 BIAS_EN Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. AD1983 TABLE OF CONTENTS Features .............................................................................................. 1 Environmental Conditions ..........................................................6 Enhanced Features............................................................................ 1 ESD Caution...................................................................................6 Functional Block Diagram .............................................................. 1 Pin Configuration and Function Descriptions..............................7 Revision History ............................................................................... 2 HD Audio Codec Information ........................................................9 Specifications..................................................................................... 3 Verb Support ............................................................................... 12 Test Conditions............................................................................. 3 Jack Presence Detection................................................................. 14 Power Down Dissipation............................................................. 5 Outline Dimensions ....................................................................... 15 Absolute Maximum Ratings............................................................ 6 Ordering Guide .......................................................................... 15 REVISION HISTORY 4/06—Revision 0: Initial Version Rev. 0 | Page 2 of 16 AD1983 SPECIFICATIONS TEST CONDITIONS Test conditions for the AD1983 are as follows, unless otherwise noted. General Test Conditions DAC Test Conditions Temperature at 25°C Digital supply (DVDD) at 3.3 V ± 10% Analog supply (AVDD) at 5.0 V ± 10% Sample rate (FS) at 48 kHz Input signal at 1.0 kHz Analog output pass band at 20 Hz to 20,000 Hz VIH at 2.0 V VIL at 0.8 V VIH at 2.4 V VIL at 0.6 V Calibrated Output −3 dB relative to full scale 10 kΩ output load, Port D, and MONO_OUT 32 Ω output load, Port A ADC Test Conditions Calibrated 0 dB PGA gain Input −3.0 dB relative to full scale Table 1. Parameter ANALOG INPUT Port-B, Port-C Conditions 0 dB Port-B, Port-C 10 dB Port-B, Port-C 20 dB Port-B, Port-C 30 dB Input Impedance 2 Input Capacitance2 MASTER VOLUME Step Size Output Gain Range Mute Attenuation of 0 dB Fundamental PROGRAMMABLE GAIN AMPLIFIER— ADC Step Size PGA Gain Range ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS Signal-to-Noise Ratio (SNR) Line In to Line Out Microphone In to Line Out2 Step Size Step Size: Digital PC Beep Input Gain Range Digital PC Beep DIGITAL DECIMATION AND INTERPOLATION FILTERS2 Pass Band Pass-Band Ripple Transition Band Stop Band Stop-Band Rejection Min Typ 1 2.83 0.316 0.894 0.1 0.283 0.032 0.089 20 5 Port-A, Port-D, MONO_OUT Max Unit 7.5 V rms 1 V p-p V rms V p-p V rms V p-p V rms V p-p kΩ pF 1.5 –46.5 80 +3 1.5 22.5 dB dB −34.5 −45.0 +12.0 0.0 dB dB dB dB dB dB 0 0.4 × FS ±0.09 0.6 × FS ∞ 0.0 85 80 1.5 3.0 All mixer inputs except digital PC BEEP All mixer inputs except digital PC BEEP 0.4 × FS 0.6 × FS −74 Rev. 0 | Page 3 of 16 dB dB dB Hz dB Hz Hz dB AD1983 Parameter Group Delay Group Delay Variation over Pass Band ANALOG-TO-DIGITAL CONVERTERS Resolution Total Harmonic Distortion (THD) Dynamic Range Crosstalk2 Gain Error Interchannel Gain Mismatch ADC Offset Error2 DIGITAL-TO-ANALOG CONVERTERS Resolution Total Harmonic Distortion (THD) Dynamic Range Gain Error Interchannel Gain Mismatch DAC Crosstalk2 ANALOG OUTPUT Full-Scale Output Voltage Output Impedance2 External Load Impedance2 Output Capacitance2 External Load Capacitance Full-Scale Output Voltage External Load Impedance2 Output Capacitance2 External Load Capacitance2 VREF_FILT MIC_BIAS (Port-B and Port-C) Current Drive Mute Click STATIC DIGITAL SPECIFICATIONS High Level Input Voltage (VIH), Digital Inputs Low Level Input Voltage (VIL) High Level Output Voltage (VOH) Low Level Output Voltage (VOL) Input Leakage Current Output Leakage Current Input/Output Pin Capacitance Conditions Min −60 dB input, THD + N referenced to FS, A-weighted Line inputs: Input L, Ground R, Read R; Input R, Ground L, Read L Line inputs and other inputs Fullscale span relative to nominal input voltage Difference of gain errors Typ 16/FS 0 Max +20 −92 −85 Bits dB dB −80 dB −100 ±10 −80 dB % ±0.5 ±5 dB mV +24 −86 −76 −90 Line out Headphone out −60 dB input, THD + N referenced to FS, A-weighted Full-scale span relative to nominal input voltage Difference of gain errors Input L, Zero R, Read R out; Input R, Zero L, Read L out Bits dB dB dB ±10 ±0.7 −80 Port-D and MONO_OUT 1 2.83 300 10 15 1000 Port-A: headphone out 1 2.83 32 15 2.050 At 50% setting At 80% setting At 0% setting 2.250 2.250 3.700 0.0 Muted output, unmuted midscale DAC output ±5 1000 2.450 5 0.35 × DVDD 0.90 × DVDD −10 −10 Rev. 0 | Page 4 of 16 % dB dB V rms V p-p Ω kΩ pF pF V rms V p-p Ω pF pF V V V V mA mV V 0.65 × DVDD IOH = 2 mA IOL = 2 mA Unit sec μs 0.10 × DVDD +10 +10 7.5 V V V μA μA pF AD1983 Parameter POWER SUPPLY Power Supply Range Analog Digital Power Dissipation—Analog (AVDD)/Digital (DVDD) Analog Supply Current—Analog (AVDD) Digital Supply Current—Digital (DVDD) Power Supply Rejection 1 2 Conditions Min (AVDD) ±10% (DVDD) ±10% 4.5 2.97 100 mV p-p signal @ 1 kHz Typ Max Unit 5.5 3.63 165/125 V V mW 33 mA 38 mA 40 dB RMS values assume sine wave input. Guaranteed by design; not production tested. POWER DOWN DISSIPATION Table 2. Parameter FUNCTION NODE1 DAC ADC MIXER 1 DVDD 0 30 28 37 BIT_CLK off. Rev. 0 | Page 5 of 16 AVDD 1.8 26 26 17 Unit mA mA mA mA AD1983 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Digital (DVDD) Analog (AVDD) Input Current (Except Supply Pins) Analog Input Voltage (Signal Pins) Digital Input Voltage (Signal Pins) Ambient Temperature (Operating) Commercial Range Industrial Range Storage Temperature Range Rating −0.3 V to +3.6 V −0.3 V to +6.0 V ±10.0 mA −0.3 V to AVDD + 0.3 V −0.3 V to DVDD + 0.3 V 0°C to 70°C −40°C to +85°C −65°C to +150°C Stresses above 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. ENVIRONMENTAL CONDITIONS Table 4. Thermal Resistance Package LFCSP_VQ 1 2 θJA 1 58.8 θJC 2 (bottom) 1.52 θJC2(top) 23.69 Unit °C/W θJA is the thermal resistance (junction-to-ambient). Bottom pad not soldered. θJC is the thermal resistance (junction-to-case). Bottom pad not soldered. ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev. 0 | Page 6 of 16 AD1983 32 31 30 29 28 27 26 25 S/PDIF_OUT GPIO_1/JS_0 GPIO_0/JS_1 AVSS PORT-A_R (Headphone) PORT-A_L (Headphone) AVDD MONO_OUT PIN CONFIGURATION AND FUNCTION DESCRIPTIONS AD1983 TOP VIEW (Not to Scale) 24 23 22 21 20 19 18 17 PORT-D_R (Line Out) PORT-D_L (Line Out) AVDD (Optional) SENSE_SRC MIC_BIAS-C MIC_BIAS-B VREF_FILT AVSS 05205-002 NC = NO CONNECT PIN 1 INDICATOR 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 SENSE_A NC NC NC PORT-B_L (MIC) PORT-B_R (MIC) PORT-C_L (Line In) PORT-C_R (Line In) NC (Reserved) SDATA_OUT BIT_CLK DVSS SDATA_IN DVDD SYNC RESET Figure 2. Pin Configuration Table 5. Pin Function Descriptions Mnemonic SDATA_OUT BIT_CLK SDATA_IN SYNC RESET GPIO_1/JS_0 Pin No. 2 3 5 7 8 31 I/O 1 I I I/O I I Digital I/O GPIO_0/JS_1 30 Digital I/O SENSE_A 9 Digital I SENSE_SRC 21 Digital O PORT-B_L (MIC) PORT-B_R (MIC) PORT-C_L (Line In) PORT-C_R (Line In) PORT-D_L (Line Out) PORT-D_R (Line Out) MONO_OUT PORT-A_L (Headphone) PORT-A_R (Headphone) VREF_FILT MIC_BIAS-B 13 14 15 16 23 24 25 27 28 18 19 Analog I Analog I Analog I Analog I Analog O Analog O Analog O Analog O Analog O O O Description HD Audio Link Serial Data Output. Codec input stream. HD Audio Link Bit Clock Input. 24 MHz. HD Audio Link Serial Data Input. Codec output stream. HD Audio Link Frame Sync. HD Audio Link Reset. Master hardware reset. GPIO_1: General Purpose Input/Output Pin. Digital signal used for circuit control. JS_0: Classical (DC) Jack Sense for Line_Out Pins. Low = jack not present, high = jack present. GPIO_0: General Purpose Input/Output Pin. Digital signal used circuit control. JS_1: Classical (DC) Jack Sense for Headphone. Low = jack not present, high = jack present. Jack Sense Input for Presence Detect on Port A Through Port D. Used with isolated switches on audio jacks. Connect via 2.67 kΩ 1% resistor to Pin 9 (SENSE_A) when using the SENSE_A functionality. This reduces the current draw of the jack presence tree during idle states. Remove the resistor between Pin 9 and AVDD in this mode. Microphone or Line-In Left Input. Microphone or Line-In Right Input. Line-In or Microphone Left Input. Line-In or Microphone Right Input. Line-Out-(Front)-Left Channel. Line-Out-(Front)-Right Channel. Monaural Output to Telephony Subsystem Speakerphone. Headphone-Out-Left Channel. Headphone-Out-Right Channel. Voltage Reference Filter. Programmable Microphone Bias Output. Intended for connection to Port-B. Rev. 0 | Page 7 of 16 AD1983 Mnemonic MIC_BIAS-C DVSS DVDD AVSS AVDD S/PDIF_OUT NC 1 Pin No. 20 4 6 17, 29 22, 26 32 1, 10 to 12 I/O 1 O I I I I Digital O Description Programmable Microphone Bias Output. Intended for connection to Port-C. Digital Supply Return (Ground). Digital Supply Voltage (3.3 V). Analog Supply Return (Ground). Analog Supply Voltage (5.0 V). AVDD supplies should be well filtered because supply noise degrades audio performance. Connection to Pin 22 is optional. Supports S/PDIF Output. I refers to input and O refers to output. Rev. 0 | Page 8 of 16 AD1983 HD AUDIO CODEC INFORMATION Table 6. Widget List and Descriptions NID (Hex) 00 01 02 03 04 05 06 07 Name ROOT FUNCTION S/PDIF Front DAC Record ADC Port-D (Line Out) Port-A (Headphone Out) MONO_OUT Type ID x x 0 0 1 4 4 4 Type Root Function Audio output Audio output Audio input Pin complex Pin complex Pin complex 08 09 0A 0B 0C Port-B (Front Microphone) Port-C (Line In) S/PDIF_OUT Mono Selector Microphone Selector/Boost 4 4 4 3 3 Pin complex Pin complex Pin complex Audio selector Audio mixer 0D 0E 0F 10 11 12 Line In Selector Analog Mixer Mono Mixer Digital PC Beep Front Mix Amp Port-B Mix Amp 3 2 2 7 3 3 Audio selector Audio mixer Audio mixer Beep generator Audio selector Audio selector 13 Port-C Mix Amp 3 Audio selector 14 Record Selector 3 Audio selector 15 Analog Power-Down 5 Power widget Description Device identification. Designates this device as an audio codec. Designates the codec S/PDIF digital stream output interface. Designates the playback channel digital/audio converters. Designates the record channel audio/digital converters. Port-D pin drivers. Typically used as rear panel line output. Port-A pin drivers. Typically used as front panel headphone output. Monaural output pin driver. Typically used to drive an internal speaker or as a microphone selector on a telephony system. Port-B pin drivers. Typically used as front panel microphone. Port-C pin drivers. Typically used as rear panel line input. S/PDIF output digital interface. Chooses the signals that drive the mono output mixer and pin. Allows microphone source port selection and boost preamplifier setting. Allows line in source port selection. Selectively mixes analog input signals into a single signal. Stereo-to-Mono mixer. Digital PC beep generator. Individual gain control for the DAC (front) input to the analog mixer. Individual gain control for the Port-B (front microphone) input to the analog mixer. Individual gain control for the Port-C (line in) input to the analog mixer. Chooses the signal that is recorded by the record ADC. Also contains the record gain controls. Controls power on analog mixer and associated amplifiers. This controls the power of all widgets in its connection list. Table 7. Root and Function Node Parameters1 NID (Hex) 00 01 1 2 Name ROOT FUNCTION Type ID X X Type Root Function Vendor ID PID 002 11D41983 Revision ID PID 022 00100400 Sub Node Count PID 042 00010001 00020014 Default SSID: BFD30000. PID = parameter ID. Rev. 0 | Page 9 of 16 Function Group Type PID 052 Audio F.G. Caps PID 082 GPIO Caps PID 112 00000001 00010C0C 40000002 AD1983 Table 8. Widget Parameters NID (Hex) 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 1 Widget Caps Name PID 091 FUNCTION 000004C0 S/PDIF 00030311 Front DAC 00000441 Record ADC 00100501 Port-D (Line Out) 00400185 00400185 Port-A (Headphone Out) MONO_OUT 00400104 00400081 Port-B (Front Microphone) Port-C (Line In) 00400081 S/PDIF_OUT 00400301 Mono Selector 00300101 0030010D Microphone Selector/Boost Line In Selector 00300101 Analog Mixer 00200101 Mono Mixer 00200100 Digital PC Beep 0070000C Front Mix Amp 0030010D Port-B Mix Amp 0030010D Port-C Mix Amp 0030010D Record Selector 0030010D 00500500 Analog PowerDown PCM Size, Rate PID 0A1 000E007F 00020060 000E007F 000E007F Stream Pin Format Caps PID 0B1 PID 0C1 00000001 00000005 00000001 00000001 00000017 0000001F Input Con. List Amp Caps Len PID 0D1 PID 0E1 00000000 00000002 00000000 00000001 00000002 00000002 00000010 00001727 00000001 00000000 00001727 00000010 00000000 00000001 00000004 00000002 Power States PID 0F1 00000009 Rev. 0 | Page 10 of 16 GPIO Caps PID 111 80053F3D 00000009 00004601 00000009 00000002 00000003 00000001 00000000 00000001 00000001 00000001 00000004 00000004 00000009 PID = parameter ID. Processing Caps PID 101 00000001 VendorSpecific PID F01 00000084 00000010 80053F3D 00000008 80053F3D 00000008 80053F3D 00000008 00000008 00270300 00000002 800B0F0F 80051F17 80051F17 80051F17 80050F00 AD1983 Table 9. Default Configuration Parameters Bit Bit 31 30 29 28 27 24 Location 23 20 19 16 Conn. Type 1/8" Jack 1/8" Jack ATAPI 1/8" Jack 1/8" Jack Optical Node ID (Hex) 05 Name Line Out Type ID 4 Value 01014010 Connect Jack Chassis External Position Rear 06 HP Out 4 0221401F Jack External Front Def. Device Line Out HP Out 07 08 4 4 991301F0 02A19020 Fixed Jack Internal External Special 3 Front Speaker Mic In 09 Mono Out Microphone In Line In 4 0181302E Jack External Rear Line In 0A S/PDIF Out 4 014511F0 Jack External Rear SPDIF Out 15 12 8 8 Misc. 7 4 3 0 Color Green Ovrrd. 0 Def. Assn. 1 Sequence 0 Green 0 1 F Unknown Pink 1 0 F 2 0 0 Blue 0 2 E Black 1 F 0 Table 10. Widget Connection List NID (Hex) 02 Name S/PDIF 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 Front DAC Record ADC Port-D (Line Out) Port-A (Headphone Out) MONO_OUT Port-B (Front Microphone) Port-C (Line In) S/PDIF_OUT Mono Selector Microphone Selector/Boost Line In Selector Analog Mixer Mono Mixer Digital PC Beep Front Mix Amp Port-B Mix Amp Port-C Mix Amp Record Selector Analog Power-Down 0 NID (Hex) 01 14 03 03 0F 0E 0E 02 03 08 09 11 0B 0C 09 08 12 13 0D 09 0E 0B 03 0C 0D 0C 05 Rev. 0 | Page 11 of 16 Index 1 2 NID (Hex) NID (Hex) 04 0D 3 NID (Hex) 0E 0F 14 AD1983 VERB SUPPORT Table 11 and Table 12 list only those HD audio verbs that are supported. F06 F07 F08 F09 F0A --- 701 --- 703 704 705 706 707 708 709 70A √ U2 S1 √ 4xx 5xx Amplifier Gain/Mute 3xx Stream Format 2xx Digital Converter 2 F05 Digital Converter 1 Power State F04 Beep Generator SDI Select F03 Pin Sense Processing State F02 Cxx Unsolicited Enable Connection List Entry F01 Bxx Pin Widget Control Connection Select F00 Axx Channel / Stream ID Parameter Dxx Processing Coefficient Cofficient Index Table 11. Widget Verb Support Get Node ID (Hex) Name 00 ROOT 01 02 03 04 05 06 07 08 09 0A 0B 0C FUNCTION S/PDIF Front DAC Record ADC Line Out HP Out Mono Out Microphone In Line In S/PDIF Out Mono Selector Microphone Selector Line In Selector Analog Mixer Mono Mixer Digital PCBeep Front MixAmp Microphone MixAmp Line In MixAmp ADC Selector Analog Power Down 0D 0E 0F 10 11 12 13 14 15 1 2 (Hex) F0D Set (Hex) 70D 70E √ √ √ S1 S1 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ 2 U U2 U2 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ S = supports ADI specific functionality. Refer to the Programming Guide for more details (available from your assigned Applications Engineer). U = unsupported in the AD1983; the get verb always returns 0, the set verbs are ignored. Rev. 0 | Page 12 of 16 AD1983 1 2 F1A 71A 71C F1C 71D 71E √ √ √ U 2 √ 71F 720 F20 721 722 723 √ √ √ 2 U Only the FUNCTION node (Node ID 01) supports the RESET Verb 7FF (set verb only). U = unsupported in the AD1983. The get verb always returns 0, and the set verbs are ignored. Rev. 0 | Page 13 of 16 √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ √ Subsystem ID Byte4 F19 719 Subsystem ID Byte3 Config Def Byte2 F18 718 Subsystem ID Byte2 Config Def Byte1 F17 717 Subsystem ID Byte1 GPI/O Sticky Mask F16 716 Config Def Byte4 GPI/O Unsolicited F15 715 Config Def Byte3 GPI/O Wake Mask Line Out HP Out Mono Out Microphone Line In S/PDIF Out GPI/O Direction FUNCTION 05 06 07 08 09 0A Get (Hex) Set (Hex) GPI/O Enable Name Node ID 01 1 GPI/O Data Table 12. Widget Extended Verb Support AD1983 JACK PRESENCE DETECTION The AD1983 uses one jack sense line for presence detection on up to four external jacks. This enables software to determine if there is a device plugged into a jack; then, the AD1983 sensing engine can determine what type of device it is. Jack presence is detected using a resistor tree arrangement outlined in the HD Audio specification. Up to four jacks can be sensed on a single sense line by using a different value resistor for each between the sense line and ground (AVSS). Jacks must have normallyopen, isolated switches to use this method of jack presence detection. For proper operation there must be a 2.67 kΩ 1% resistor connected between SENSE_A and AVDD. For this configuration R1 and C1 should be installed; R2 should not be installed (see Figure 3). Table 13. Jack Sense Mapping SENSE_A Resistor (1%) 5.1 kΩ 10.0 kΩ 20.0 kΩ 39.2 kΩ Name Line Out Line In Microphone Headphone Out It is recommended that designers place circuitry for both sensing methods and only install one of the two options. SENSE_A/SRC_B SENSE_SRC AVSS AVDD 22, 26 R1 2.67kΩ, 1%, 1/8W 9 R2 (DNE) 2.67kΩ, 1%, 1/8W 21 C1 1µF TO JACKS FOR PORT A THROUGH PORT D 17, 29 05205-003 AVDD Node ID (Hex) 05 09 08 06 An alternate method reduces the current for sensing by connecting a single 2.67 kΩ 1% resistor between the SENSE_A and SENSE_SRC pins. For this configuration R1 and C1 are not installed; however, R2 is installed (see Figure 3). The specific resistor values for each jack are shown in Table 13. To ensure accurate detection, use 1% tolerance resistors for all jack presence circuitry. AD1983 Port D C B A Figure 3. Jack Presence Detection Rev. 0 | Page 14 of 16 AD1983 OUTLINE DIMENSIONS 0.60 MAX 5.00 BSC SQ 0.60 MAX 25 24 PIN 1 INDICATOR TOP VIEW 0.50 BSC 4.75 BSC SQ 0.50 0.40 0.30 32 1 EXPOSED PAD (BOTTOM VIEW) 17 16 3.65 3.50 SQ 3.35 9 8 0.25 MIN 3.50 REF 0.80 MAX 0.65 TYP 12° MAX 1.00 0.85 0.80 PIN 1 INDICATOR 0.05 MAX 0.02 NOM 0.30 0.23 0.18 SEATING PLANE 0.20 REF COPLANARITY 0.08 COMPLIANT TO JEDEC STANDARDS MO-220-VHHD-2 Figure 4. 32-Lead Lead Frame Chip Scale Package [LFCSP_VQ] 5 mm × 5 mm Body, Very Thin Quad (CP-32-4) Dimensions shown in millimeters ORDERING GUIDE Model AD1983JCPZ1 AD1983JCPZ-REEL1 1 Temperature Range 0°C to +70°C 0°C to +70°C Package Description 32-Lead LFCSP_VQ, Tray 32-Lead LFCSP_VQ, Reel Z = Pb-free part. Rev. 0 | Page 15 of 16 Package Option CP-32-4 CP-32-4 AD1983 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05205-0-4/06(0) Rev. 0 | Page 16 of 16