IC CODEC MONO AUD 16BIT 24TQFN

MAX9860ETG+T

Manufacturer Part NumberMAX9860ETG+T
DescriptionIC CODEC MONO AUD 16BIT 24TQFN
ManufacturerMaxim Integrated Products
TypeAudio Codec
MAX9860ETG+T datasheet
 


Specifications of MAX9860ETG+T

Data InterfaceSerialResolution (bits)16 b
Number Of Adcs / Dacs1 / 2Sigma DeltaYes
Dynamic Range, Adcs / Dacs (db) Typ81 / 90Voltage - Supply, Analog1.7 V ~ 1.9 V
Voltage - Supply, Digital1.7 V ~ 1.9 VOperating Temperature-40°C ~ 85°C
Package / Case24-TQFN Exposed PadLead Free Status / RoHS StatusLead free / RoHS Compliant
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19-4349; Rev 1; 9/09
General Description
The MAX9860 is a low-power, voiceband, mono audio
codec designed to provide a complete audio solution
for wireless voice headsets and other mono voice audio
devices. Using an on-chip bridge-tied load mono head-
phone amplifier, the MAX9860 can output 30mW into a
32Ω earpiece while operating from a single 1.8V power
supply. Very low power consumption makes it an ideal
choice for battery-powered applications.
The MAX9860’s flexible clocking circuitry utilizes com-
mon system clock frequencies ranging from 10MHz to
60MHz, eliminating the need for an external PLL and
multiple crystal oscillators. Both the ADC and DAC sup-
port sample rates of 8kHz to 48kHz in either synchro-
nous or asynchronous operation. Both master and slave
timing modes are supported.
Two differential microphone inputs are available with a
user-programmable preamplifier and programmable
gain amplifier. Automatic gain control with selectable
attack/release times and signal threshold allows maxi-
mum dynamic range. A noise gate with selectable
threshold provides a means to quiet the channel when
no signal is present. Both the DAC and ADC digital filters
provide full attenuation for out-of-band signals as well as
a 5th order GSM-compliant digital highpass filter. A digi-
tal side tone mixer provides loopback of the micro-
phones/ADC signal to the DAC/headphone output.
Serial DAC and ADC data is transferred over a flexible
2
digital I
S-compatible interface that also supports TDM
mode. Mode settings, volume control, and shutdown are
2
programmed through a 2-wire, I
C-compatible interface.
The MAX9860 is fully specified over the -40°C to +85°C
extended temperature range and is available in a low-
profile, 4mm x 4mm, 24-pin thin QFN package.
Audio Headsets
Portable Navigation Device
Mobile Phones
Smart Phones
VoIP Phones
Audio Accessories
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
16-Bit Mono Audio Voice Codec
♦ 1.8V Single-Supply Operation
♦ Digital Highpass Elliptical Filters with Notch for
217Hz (GSM)
♦ Mono 30mW BTL Headphone Amplifier
♦ Dual Low-Noise Microphone Inputs
♦ Automatic Microphone Gain Control and Noise
Gate
♦ 90dB DAC DR (f
♦ 81dB ADC DR (f
♦ Supports Master Clock Frequencies from 10MHz
to 60MHz
♦ Supports Sample Rates from 8kHz to 48kHz
♦ Flexible Digital Audio Interface
♦ Clickless/Popless Operation
♦ 2-Wire, I
♦ Available in 24-Pin, Thin QFN, 4mm x 4mm x
0.8mm Package
PART
MAX9860ETG+
+ Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.
Applications
DIGITAL AUDIO
INPUT/OUTPUT
Features
= 48kHz)
S
= 48kHz)
S
2
C-Compatible Control Interface
Ordering Information
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
24 TQFN-EP*
Simplified Block Diagram
DVDDIO
AVDD AND DVDD
1.7V TO 3.6V
1.7V TO 1.9V
2
MAX9860
I
C
INTERFACE
DAC
DIGITAL
DIGITAL
FILTERING
AUDIO
AND
ADC
INTERFACE
MIXERS
ADC
CLOCK
CONTROL
DIFF
MIC
DIFF
MIC
1

MAX9860ETG+T Summary of contents

  • Page 1

    ... VoIP Phones Audio Accessories Pin Configuration and Typical Operating Circuit appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 16-Bit Mono Audio Voice Codec ♦ 1.8V Single-Supply Operation ♦ ...

  • Page 2

    Mono Audio Voice Codec ABSOLUTE MAXIMUM RATINGS (Voltages referenced to AGND.) DVDDIO, SDA, SCL, IRQ.......................................-0.3V to +3.6V AVDD, DVDD............................................................-0.3V to +2V AGND, DGND, MICGND .......................................-0.3V to +0.3V OUTP, OUTN, PREG, REF, MICBIAS ......-0.3V to (AVDD + 0.3V) MICLP, MICLN, ...

  • Page 3

    ELECTRICAL CHARACTERISTICS (continued +1.8V, R AVDD DVDD DVDDIO 1µ +20dB, A PREG REG VPRE Typical values are +25°C.) (Note 2) A PARAMETER SYMBOL Power-Supply Rejection ...

  • Page 4

    Mono Audio Voice Codec ELECTRICAL CHARACTERISTICS (continued +1.8V, R AVDD DVDD DVDDIO 1µ +20dB, A PREG REG VPRE Typical values are +25°C.) (Note 2) ...

  • Page 5

    ELECTRICAL CHARACTERISTICS (continued +1.8V, R AVDD DVDD DVDDIO 1µ +20dB, A PREG REG VPRE Typical values are +25°C.) (Note 2) A PARAMETER SYMBOL 5th Order ...

  • Page 6

    Mono Audio Voice Codec ELECTRICAL CHARACTERISTICS (continued +1.8V, R AVDD DVDD DVDDIO 1µ +20dB, A PREG REG VPRE Typical values are +25°C.) (Note 2) ...

  • Page 7

    DIGITAL AUDIO INTERFACE ELECTRICAL CHARACTERISTICS ( 1.8V, unless otherwise noted.) (Note 2) DVDD DVDDIO PARAMETER SYMBOL BCLK Cycle Time t BCLK High Time t BCLK Low Time t BCLK or LRCLK Rise and Fall Time SDIN or ...

  • Page 8

    Mono Audio Voice Codec INTERFACE ELECTRICAL CHARACTERISTICS (continued 1.8V, unless otherwise noted.) (Note 2) DVDD DVDDIO PARAMETER SYMBOL SDA Transmitting Fall Time Setup Time for STOP Condition t SU,STO Bus Capacitance Pulse ...

  • Page 9

    +1.8V, R AVDD DVDD DVDDIO 1µ 1µF A PREG REG MICBIAS TOTAL HARMONIC DISTORTION + NOISE vs. OUTPUT POWER (DAC TO HP 32Ω L ...

  • Page 10

    Mono Audio Voice Codec (V = +1.8V +1.8V, R AVDD DVDD DVDDIO 1µ 1µF A PREG REG MICBIAS POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (MIC TO ADC) 0 -10 -20 ...

  • Page 11

    +1.8V, R AVDD DVDD DVDDIO 1µ 1µF A PREG REG MICBIAS 0dBFS FFT (MICL TO ADC) 20 MCLK = 13MHz LRCLK = 8kHz 0 PLL ENABLED -20 ...

  • Page 12

    Mono Audio Voice Codec (V = +1.8V +1.8V, R AVDD DVDD DVDDIO 1µ 1µF A PREG REG MICBIAS HEADPHONE STARTUP WAVEFORM SDA (2V/div) SPK+ -SPK- (1V/div) TIME (4ms/div) SOFT-START ...

  • Page 13

    PIN NAME Microphone Bias. +1.55V microphone bias for internal and/or external microphone. An external resistor from 1 MICBIAS 2.2kΩ to 470Ω should be used to set the microphone current. Bypass to MICGND with a 1µF capacitor. 2 REG Internal Bias. ...

  • Page 14

    Mono Audio Voice Codec Detailed Description The MAX9860 is a low-power, voiceband, mono audio codec designed to provide a complete audio solution for wireless voice headsets and other mono audio devices. The mono playback path accepts digital audio over ...

  • Page 15

    Table Register Map REGISTER B7 B6 STATUS/INTERRUPT Interrupt Status CLD SLD Microphone NG/AGC NG Readback Interrupt Enable ICLD ISLD CLOCK CONTROL System Clock 0 0 Stereo Audio Clock PLL Control High Stereo Audio Clock Control Low ...

  • Page 16

    Mono Audio Voice Codec Status registers 0x00 and 0x01 are read-only registers that report the status of various device functions. The status register bits are cleared upon a read operation of the status register and are set the next ...

  • Page 17

    The MAX9860 can work with a master clock (MCLK) supplied from any system clock within the range of 10MHz to 60MHz. Internally, the MAX9860 requires a 10MHz to 20MHz clock so a prescaler divides ...

  • Page 18

    Mono Audio Voice Codec Table 3. Clock Control Registers (continued) BITS PLL Enable 0 = (Valid for slave and master mode)—The frequency of LRCLK is set by the NHI and NLO divider bits. Set PLL = 0 in slave ...

  • Page 19

    Digital Audio Interface The MAX9860’s digital audio interface supports a wide range of operating modes to ensure maximum compati- bility. See Figures 1 through 4 for timing diagrams. In Table 5. Digital Audio Interface Registers REGISTER ADDRESS B7 0x06 MAS ...

  • Page 20

    Mono Audio Voice Codec Table 5. Digital Audio Interface Registers (continued) BITS ADC Delay Mode 0 = SDOUT data is valid on the first BCLK edge following an LRCLK edge SDOUT data is delayed one BCLK cycle ...

  • Page 21

    AUDIO MASTER MODES (ST = 1): LEFT JUSTIFIED : WCI = 0, _BCI = 0, _DLY = 0 7ns (typ) LEFT LRCLK RELATIVE TO PCLK (NOTE 7) D15 D14 D13 D12 D11 D10 ...

  • Page 22

    Mono Audio Voice Codec VOICE (TDM) MASTER MODES: _BCI = 0, HIZ = 7ns (typ) LRCLK RELATIVE TO PCLK (NOTE 8) SDOUT L15 L14 L13 L12 L11 L10 ...

  • Page 23

    AUDIO SLAVE MODES (ST = 1): LEFT JUSTIFIED: WCI = 0, _BCI = 0, _DLY = 0 LEFT LRCLK 25ns (min) SDOUT D15 D14 D13 D12 D11 D10 40ns (max) ...

  • Page 24

    Mono Audio Voice Codec VOICE (TDM) SLAVE MODES: _BCI = 0, HIZ = LRCLK 25ns (min) SDOUT L15 L14 L13 L12 L11 L10 40ns (max) 0ns ...

  • Page 25

    The MAX9860 incorporates selecable highpass and notch filters for both the playback and record paths. Each filter is valid for a specific sample rate. Table 6. Digital Filter Registers REGISTER ADDRESS B7 0x08 BITS AVFLT ADC Voice Filter Frequency Select. ...

  • Page 26

    Mono Audio Voice Codec Digital Level Control The MAX9860 includes digital gain adjustment for the playback and record paths. Independent gain Table 8. Digital Level Control Registers REGISTER ADDRESS B7 0x09 0x0A 0x0B 0 BITS DAC Level Adjust Adjusts ...

  • Page 27

    Table 8. Digital Level Control Registers (continued) BITS Left and Right ADC Output Level Adjusts the digital audio level output by the ADCs. CODE 0x0 0x1 0x2 0x3 0x4 0x5 ADCRL/ADCLL 0x6 0x7 0x8 0x9 0xA 0xB 0xC 0xD 0xE ...

  • Page 28

    Mono Audio Voice Codec Microphone Inputs The MAX9860 provides two differential microphone inputs and a low-noise 1.55V microphone bias for power- ing the microphones. In typical applications, the left microphone is used to record a voice signal and the ...

  • Page 29

    Table 9. Microphone Input Register REGISTER ADDRESS B7 0x0C 0 BITS Left and Right Microphone Preamp Gain CODE 00 PAM Note: Selecting 00 disables the microphone inputs and microphone bias automatically. Left and Right Microphone PGA CODE ...

  • Page 30

    Mono Audio Voice Codec Automatic Gain Control (AGC) The MAX9860 includes AGC on both microphone inputs. AGC is enabled by setting the hold time through AGCHLD. AGC dynamically controls the analog PGA microphone input gain to hold the level ...

  • Page 31

    Table 10. AGC and Noise Gate Registers (continued) BITS Noise Gate Threshold The signal level at which the noise gate begins reducing the gain. When the signal level is above the threshold the noise gate has no effect. When the ...

  • Page 32

    Mono Audio Voice Codec Power Management The MAX9860 includes complete power management control to minimize power usage. The DAC and both Table 11. Power Management Register REGISTER ADDRESS B7 SHDN 0x10 BITS Active-Low Software Shutdown 0 = MAX9860 is ...

  • Page 33

    SDA t SU,DAT t LOW t SCL HIGH t HD,STA t R START CONDITION Figure 6. 2-Wire Interface Timing Diagram One data bit is transferred during each SCL cycle. The data on SDA must remain stable during the high period ...

  • Page 34

    Mono Audio Voice Codec SCL SDA Figure 7. START (S), STOP (P), and REPEATED START (Sr) Conditions START CONDITION SCL SDA Figure 8. Acknowledge ACKNOWLEDGE FROM MAX9860 S SLAVE ADDRESS 0 R/W Figure 9. Writing One Byte of Data ...

  • Page 35

    ACKNOWLEDGE FROM MAX9860 ACKNOWLEDGE FROM MAX9860 S SLAVE ADDRESS 0 A R/W Figure 10. Writing N Bytes of Data to the MAX9860 ACKNOWLEDGE FROM MAX9860 ACKNOWLEDGE FROM MAX9860 S SLAVE ADDRESS 0 A R/W Figure 11. Reading One Byte of ...

  • Page 36

    Mono Audio Voice Codec Pin Configuration TOP VIEW MICBIAS REG PREG 3 MAX9860 REF 4 AGND 5 *EP AVDD THIN QFN 4mm x 4mm *EP ...

  • Page 37

    SDOUT MONO 16 SDIN DIGITAL AUDIO P INTERFACE P 17 LRCLK 18 BCLK P DVDDIO P P 10kΩ IRQ 19 TIMING AND CONTROL LOGIC MCLK 14 DVDDIO 1.5kΩ 1.5kΩ SCL 10 STATUS SERIAL PORT SDA 9 ...

  • Page 38

    Mono Audio Voice Codec For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 24 TQFN-EP 38 ______________________________________________________________________________________ Package Information PACKAGE CODE T2444+4 DOCUMENT NO. 21-0139 ...

  • Page 39

    For the latest package outline information and land patterns www.maxim-ic.com/packages. ______________________________________________________________________________________ 16-Bit Mono Audio Voice Codec Package Information (continued) 39 ...

  • Page 40

    ... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 40 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...