Texas Instruments TLV320AIC23PW, TLV320AIC23IPW, TLV320AIC23IGQE, TLV320AIC23GQE Datasheet

TLV320AIC23
Stereo Audio CODEC, to 96ĆkHz, With Integrated Headphone Amplifier
Data Manual
July 2001 Digital Audio Products
SLWS106C
IMPORTANT NOTICE
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Copyright 2001, Texas Instruments Incorporated
Contents
Section Title Page
1 Introduction 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Features 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Functional Block Diagram 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Terminal Assignments 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Ordering Information 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Terminal Functions 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Specifications 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Absolute Maximum Ratings Over Operating Free-Air
Temperature Range 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Recommended Operating Conditions 2–1. . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Electrical Characteristics Over Recommended Operating
Conditions 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 ADC 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2 DAC 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.3 Analog Line Input to Line Output 2–3. . . . . . . . . . . . . . . . . . . . . .
2.3.4 Stereo Headphone Output 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.5 Analog Reference Levels 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.6 Digital I/O 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.7 Supply Current 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Digital-Interface Timing 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 Audio Interface (Master Mode) 2–5. . . . . . . . . . . . . . . . . . . . . . .
2.4.2 Audio Interface (Slave-Mode) 2–6. . . . . . . . . . . . . . . . . . . . . . . .
2.4.3 Three-Wire Control Interface 2–7. . . . . . . . . . . . . . . . . . . . . . . . .
2.4.4 Two-Wire Control Interface 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . .
3 How to Use the AIC23 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Control Interfaces 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 SPI 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.2 I2C 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.3 Register Map 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Analog Interface 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 Line Inputs 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 Microphone Input 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3 Line Outputs 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4 Headphone Output 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.5 Analog Bypass Mode 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.6 Sidetone Insertion 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iii
3.3 Digital Audio Interface 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 Digital Audio-Interface Modes 3–7. . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 Audio Sampling Rates 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.3 Digital Filter Characteristics 3–11. . . . . . . . . . . . . . . . . . . . . . . . . .
A Mechanical Data A–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
iv
List of Illustrations
Figure Title Page
2–1 System-Clock Timing Requirements 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Master-Mode Timing Requirements 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Slave-Mode Timing Requirements 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 Three-Wire Control Interface Timing Requirements 2–7. . . . . . . . . . . . . . . . . . . .
2–5 Two-Wire Control Interface Timing Requirements 2–7. . . . . . . . . . . . . . . . . . . . .
3–1 SPI Timing 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 2-Wire I2C Compatible Timing 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 Analog Line Input Circuit 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 Microphone Input Circuit 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Right-Justified Mode Timing 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 Left-Justified Mode Timing 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
3–7I
3–8 DSP Mode Timing 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–9 Digital De-Emphasis Filter Response – 441 kHz Sampling 3–12. . . . . . . . . . . . .
3–10 Digital De-Emphasis Filter Response – 48 kHz Sampling 3–12. . . . . . . . . . . . .
3–11 ADC Digital Filter Response I: TI DSP and Normal Modes
3–12 ADC Digital Filter Ripple I: TI DSP and Normal Modes
3–13 ADC Digital Filter Response II: TI DSP Mode Only 3–14. . . . . . . . . . . . . . . . . . .
3–14 ADC Digital Filter Ripple II: TI DSP Mode Only 3–14. . . . . . . . . . . . . . . . . . . . . .
3–15 ADC Digital Filter Response III: TI DSP and Normal Modes
3–16 ADC Digital Filter Ripple III: TI DSP and Normal Modes 3–15. . . . . . . . . . . . . . .
3–17 ADC Digital Filter Response IV: TI DSP Mode Only 3–16. . . . . . . . . . . . . . . . . .
3–18 ADC Digital Filter Ripple IV: TI DSP Mode Only 3–16. . . . . . . . . . . . . . . . . . . . . .
3–19 DAC Digital Filter Response I: TI DSP and Normal Modes 3–17. . . . . . . . . . . .
3–20 DAC Digital Filter Ripple I: TI DSP and Normal Modes 3–17. . . . . . . . . . . . . . . .
3–21 DAC Digital Filter Response II: TI DSP Mode Only 3–18. . . . . . . . . . . . . . . . . . .
3–22 DAC Digital Filter Ripple II: TI DSP Mode Only 3–18. . . . . . . . . . . . . . . . . . . . . .
3–23 DAC Digital Filter Response III: TI DSP and Normal Modes 3–19. . . . . . . . . . .
3–24 DAC Digital Filter Ripple III: TI DSP and Normal Modes 3–19. . . . . . . . . . . . . . .
3–25 DAC Digital Filter Response IV: TI DSP Mode Only 3–20. . . . . . . . . . . . . . . . . .
3–26 DAC Digital Filter Ripple IV: TI DSP Mode Only 3–20. . . . . . . . . . . . . . . . . . . . . .
S Mode Timing 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Group Delay = 12 Output Samples) 3–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Group Delay = 20 Output Samples) 3–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Group Delay = 3 Output Samples) 3–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v
vi
1 Introduction
The TLV320AIC23 is a high-performance stereo audio codec with highly integrated analog functionality. The analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) within the TLV320AIC23 use multibit sigma-delta technology with integrated oversampling digital interpolation filters. Data-transfer word lengths of 16, 20, 24, and 32 bits, with sample rates from 8 kHz to 96 kHz, are supported. The ADC sigma-delta modulator features third-order multibit architecture with up to 90-dBA signal-to-noise ratio (SNR) at audio sampling rates up to 96 kHz, enabling high-fidelity audio recording in a compact, power-saving design. The DAC sigma-delta modulator features a second-order multibit architecture with up to 100-dBA SNR at audio sampling rates up to 96 kHz, enabling high-quality digital audio-playback capability, while consuming less than 23 mW during playback only. The TL V320AIC23 is the ideal analog input/output (I/O) choice for portable digital audio-player and recorder applications, such as MP3 digital audio players.
Integrated analog features consist of stereo-line inputs with an analog bypass path, a stereo headphone amplifier, with analog volume control and mute, and a complete electret-microphone-capsule biasing and buffering solution. The headphone amplifier is capable of delivering 30 mW per channel into 32 . The analog bypass path allows use of the stereo-line inputs and the headphone amplifier with analog volume control, while completely bypassing the codec, thus enabling further design flexibility, such as integrated FM tuners. A microphone bias-voltage output provides a low-noise current source for electret-capsule biasing. The AIC23 has an integrated adjustable microphone amplifier (gain adjustable from 1 to 5) and a programmable gain microphone amplifier (0 dB or 20 dB). The microphone signal can be mixed with the output signals if a sidetone is required.
While the TL V320AIC23 supports the industry-standard oversampling rates of 256 f rates of 250 f
and 272 fs are provided, which optimize interface considerations in designs using TI C54x digital signal
s
processors (DSPs) and universal serial bus (USB) data interfaces. A single 12-MHz crystal can supply clocking to the DSP, USB, and codec. The TLV320AIC23 features an internal oscillator that, when connected to a 12-MHz external crystal, provides a system clock to the DSP and other peripherals at either 12 MHz or 6 MHz, using an internal clock buffer and selectable divider. Audio sample rates of 48 kHz and compact-disc (CD) standard 44.1 kHz are supported directly from a 12-MHz master clock with 250 f
and 272 fs oversampling rates.
s
Low power consumption and flexible power management allow selective shutdown of codec functions, thus extending battery life in portable applications. This design solution, coupled with the industrys smallest package, the TI proprietary MicroStar Junior using only 25 mm
2
of board area, makes powerful portable stereo audio designs
easily realizable in a cost-effective, space-saving total analog I/O solution: the TLV320AIC23.
and 384 fs, unique oversampling
s
1.1 Features
High-Performance Stereo Codec
90-dB SNR Multibit Sigma-Delta ADC (A-weighted at 48 kHz) 100-dB SNR Multibit Sigma-Delta DAC (A-weighted at 48 kHz) 1.42 V 3.6 V Core Digital Supply: Compatible With TI C54x DSP Core Voltages 2.7 V 3.6 V Buffer and Analog Supply: Compatible Both TI C54x DSP Buffer Voltages 8-kHz 96-kHz Sampling-Frequency Support
Software Control Via TI McBSP-Compatible Multiprotocol Serial Port
I2C-Compatible and SPI-Compatible Serial-Port Protocols – Glueless Interface to TI McBSPs
Audio-Data Input/Output Via TI McBSP-Compatible Programmable Audio Interface
2
S-Compatible Interface Requiring Only One McBSP for both ADC and DAC
I Standard I 16/20/24/32-Bit Word Lengths
MicroStar Junior is a trademark of Texas Instruments.
2
S, MSB, or LSB Justified-Data Transfers
1–1
Audio Master/Slave Timing Capability Optimized for TI DSPs (250/272 fs), USB mode – Industry-Standard Master/Slave Support Provided Also (256/384 f
), Normal mode
s
Glueless Interface to TI McBSPs
Integrated Total Electret-Microphone Biasing and Buffering Solution
Low-Noise MICBIAS pin at 3/4 AVDD for Biasing of Electret Capsules Integrated Buffer Amplifier With Tunable Fixed Gain of 1 to 5 Additional Control-Register Selectable Buffer Gain of 0 dB or 20 dB
Stereo-Line Inputs
Integrated Programmable Gain Amplifier Analog Bypass Path of Codec
ADC Multiplexed Input for Stereo-Line Inputs and Microphone
Stereo-Line Outputs
Analog Stereo Mixer for DAC and Analog Bypass Path
Analog Volume Control With Mute
Highly Efficient Linear Headphone Amplifier 30 mW into 32 From a 3.3-V Analog Supply Voltage
Flexible Power Management Under Total Software Control
23-mW Power Consumption During Playback Mode Standby Power Consumption <150 µW Power-Down Power Consumption <15 µW
Industrys Smallest Package: 32-Pin TI Proprietary MicroStar Junior
2
Total Board Area
25 mm 28-Pin TSSOP Also Is Available (62 mm
2
Total Board Area)
Ideally Suitable for Portable Solid-State Audio Players and Recorders
1–2
1.2 Functional Block Diagram
AVDD
VMID
AGND
MICBIAS
RLINEIN
MICIN
LLINEIN
HPVDD HPGND
RHPOUT
50 k
50 k
12 to –34.5 dB,
10 k
VMID
12 to –34 dB,
Headphone
Driver
1.0X
1.0X
1.0X
1.5X
1.5 dB Steps
50 k
1.5 dB Steps 6 to –73 dB,
1 dB Steps
VADC
VDAC
VMID
Bypass Mute
Line
Mute
Line
Mute
Bypass Mute
Mute,
0 dB, 20 dB
2:1
MUX
Σ
DSPcodec
TLV320AIC23
2:1
MUX
VADC
Side Tone Mute
Σ–∆
ADC
Σ–∆
ADC
Σ–∆
DAC
Control
Interface
Digital Filters
CS SDIN SCLK MODE
DVDD BVDD
DGND
ROUT
LOUT
LHPOUT
Headphone
Driver
XTI/MCLK
XTO
CLKOUT
NOTE: MCLK, BCLK, and SCLK are all asynchronous to each other.
6 to –73 dB,
1 dB Steps
(1x, 1/2x)
OSC
Σ
CLKIN
Divider
CLKOUT
Divider
(1x, 1/2x)
VDAC
Σ–∆
DAC
Digital
Audio
Interface
LRCIN DIN LRCOUT DOUT
BCLK
1–3
1.3 Terminal Assignments
GQE PACKAGE
(TOP VIEW)
NC
DIN
BCLK
CLKOUT
BVDD
DGND
DVDD
XTO
25 24 23 22 21 20 19 18 17
NC
LRCIN
DOUT
LRCOUT
HPVDD
LHPOUT
RHPOUT
HPGND
26 27 28 29 30 31 32
123456789
NC
LOUT
NC – No internal connection
BVDD
CLKOUT
BCLK
DIN
LRCIN
DOUT
LRCOUT
HPVDD
LHPOUT
RHPOUT
HPGND
LOUT
ROUT
AVDD
1 2 3 4 5 6 7 8 9 10 11 12 13 14
ROUT
AVDD
PW PACKAGE
(TOP VIEW)
VMID
AGND
28 27 26 25 24 23 22 21 20 19 18 17 16 15
MICIN
MICBIAS
DGND DVDD XTO XTI/MCLK SCLK SDIN MODE CS LLINEIN RLINEIN MICIN MICBIAS VMID AGND
NC
16 15 14 13 12 11 10
XTI/MCLK SCLK
SDIN MODE CS LLINEIN RLINEIN
1.4 Ordering Information
T
A
10°C to 70°C TLV320AIC23GQE TLV320AIC23PW40°C to 85°C TLV320AIC23IGQE TLV320AIC23IPW
14
PACKAGE
32-Pin
MicroStar Junior GQE
28-Pin
TSSOP PW
1.5 Terminal Functions
NAME
I/O
TERMINAL
NO.
GQE PW
AGND 5 15 Analog supply return AVDD 4 14 Analog supply input. Voltage level is 3.3 V nominal. BCLK 23 3 I/O I2S serial-bit clock. In audio master mode, the AIC23 generates this signal and sends it to the DSP. In
BVDD 21 1 Buffer supply input. V oltage range is from 2.7 V to 3.6 V. CLKOUT 22 2 O Clock output. This is a buffered version of the XTI input and is available in 1X or 1/2X frequencies of XTI.
CS 12 21 I Control port input latch/address select. For SPI control mode this input acts as the data latch control. For
DIN 24 4 I I2S format serial data input to the sigma-delta stereo DAC DGND 20 28 Digital supply return DOUT 27 6 O I2S format serial data output from the sigma-delta stereo ADC DVDD 19 27 Digital supply input. Voltage range is 3.3 V nominal. HPGND 32 11 Analog headphone amplifier supply return HPVDD 29 8 Analog headphone amplifier supply input. Voltage level is 3.3 V nominal. LHPOUT 30 9 O Left stereo mixer-channel amplified headphone output. Nominal 0-dB output level is 1 V
LLINEIN 11 20 I Left stereo-line input channel. Nominal 0-dB input level is 1 V
LOUT 2 12 O Left stereo mixer-channel line output. Nominal output level is 1.0 V LRCIN 26 5 I/O I2S DAC-word clock signal. In audio master mode, the AIC23 generates this framing signal and sends it
LRCOUT 28 7 I/O I2S ADC-word clock signal. In audio master mode, the AIC23 generates this framing signal and sends it
MICBIAS 7 17 O Buffered low-noise-voltage output suitable for electret-microphone-capsule biasing. Voltage level is 3/4
MICIN 8 18 I Buffered amplifier input suitable for use with electret-microphone capsules. Without external resistors a
MODE 13 22 I Serial-interface-mode input. See Section 3.1 for details. NC 1, 9
17, 25
RHPOUT 31 10 O Right stereo mixer-channel amplified headphone output. Nominal 0-dB output level is 1 V
RLINEIN 10 19 I Right stereo-line input channel. Nominal 0-dB input level is 1 V
ROUT 3 13 O Right stereo mixer-channel line output. Nominal output level is 1.0 V SCLK 15 24 I Control-port serial-data clock. For SPI and I2C control modes this is the serial-clock input. See Section
SDIN 14 23 I Control-port serial-data input. For SPI and I2C control modes this is the serial-data input and also is used
VMID 6 16 I Midrail voltage decoupling input. 10-µF and 0.1-µF capacitors should be connected in parallel to this
XTI/MCLK 16 25 I Crystal or external-clock input. Used for derivation of all internal clocks on the AIC23. XTO 18 26 O Crystal output. Connect to external crystal for applications where the AIC23 is the audio timing master.
audio slave mode, the signal is generated by the DSP.
Bit 07 in the sample rate control register controls frequency selection.
I2C control mode this input defines the seventh bit in the device address field. See Section 3.1 for details.
dB to 6 dB is provided in 1-dB steps.
in 1.5-dB steps.
to the DSP. In audio slave mode, the signal is generated by the DSP.
to the DSP. In audio slave mode, the signal is generated by the DSP.
AVDD nominal.
default gain of 5 is provided. See Section 2.3.1.2 for details.
Not UsedNo internal connection
–73 dB to 6 dB is provided in 1-dB steps.
in 1.5-dB steps.
3.1 for details.
to select the control protocol after reset. See Section 3.1 for details.
terminal for noise filtering. Voltage level is 1/2 AVDD nominal.
Not used in applications where external clock source is used.
DESCRIPTION
RMS
. Gain of –34.5 dB to 12 dB is provided
RMS
.
RMS
RMS
. Gain of –34.5 dB to 12 dB is provided
RMS
.
RMS
. Gain of –73
. Gain of
1–5
1–6
2 Specifications
2.1 Absolute Maximum Ratings Over Operating Free-Air Temperature Range (unless otherwise noted)
Supply voltage range, AVDD to AGND, DVDD to DGND, BVDD to DGND, HPVDD to HPGND
(see Note 1) –0.3 V to + 3.63 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Analog supply return to digital supply return, AGND to DGND –0.3 V to + 3 .63 V. . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, all input signals: Digital –0.3 V to DV
Case temperature for 10 seconds 240°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T Storage temperature range, T
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: DVDD may not exceed BVDD + 0.3V; BVDD may not exceed AVDD + 0.3V or HPVDD + 0.3.
+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DD DD
+ 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
Analog –0.3 V to AV
A
10°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Recommended Operating Conditions
MIN NOM MAX UNIT
Analog supply voltage, A VDD, HPVDD (see Note 2) 2.7 3.3 3.6 V Digital buffer supply voltage, BVDD (see Note 2) 2.7 3.3 3.6 V Digital core supply voltage, DVDD (see Note 2) 1.42 1.5 3.6 V Analog input voltage, full scale – 0dB (AVDD = 3.3 V) 1 V Stereo-line output load resistance 10 k Headphone-amplifier output load resistance 0 CLKOUT digital output load capacitance 20 pF All other digital output load capacitance 10 pF Stereo-line output load capacitance 50 pF XTI master clock Input 18.43 MHz ADC or DAC conversion rate 96 kHz Operating free-air temperature, T
NOTE 2: Digital voltage values are with respect to DGND; analog voltage values are with respect to AGND.
A
–10 70 °C
RMS
2–1
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