MAX9856
Low-Power Audio CODEC with
DirectDrive Headphone Amplifiers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VAVDD = VCPVDD = VDVDDS2 = VDVDD = 1.8V, RHP = 32Ω, RLINE = 10kΩ, C1 = 4.7F, C2 = 4.7F, CREF = CMBIAS = CPREG =
CNREG = 1F, AVPRE = +20dB, CMICBIAS = 1F, AVMIGPGA = 0dB, fMCLK = 11.2896MHz, DRATE = 00, TA = TMIN to TMAX, unless
otherwise noted. Typical values are at TA = +25°C.) (Note 1)
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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(Voltages with respect to AGND.)
AVDD, DVDD, DVDDS2, CPVDD .............................-0.3V to +4V
PVSS, SVSS........................................Capacitor connection only
AGND, DGND, CPGND.........................................-0.3V to +0.3V
HPL, HPR .................................(VSVSS - 0.3V) to (VAVDD + 0.3V)
HGNDSNS, LGNDSNS, MICGND .........................-0.3V to +0.3V
JACKSNS .................................(VSVSS - 0.3V) to (VAVDD + 0.3V)
LOUTL, LOUTR ........................(VSVSS - 0.3V) to (VAVDD + 0.3V)
LINEIN1, LINEIN2, AUXIN ...........................................-2V to +2V
MICL, MICR, INLP, INLM, INRM..................................-2V to +2V
C1N........................................(VPVSS - 0.3V) to (VCPGND + 0.3V)
C1P .....................................(VCPGND - 0.3V) to (VCPVDD + 0.3V)
PREG, REF, MBIAS, MICBIAS................-0.3V to (VAVDD + 0.3V)
NREG ......................................................(VSVSS - 0.3V) to +0.3V
MCLK........................................................................-0.3V to +4V
SDA, SCL,
IRQ .........................................................-0.3V to +4V
LRCLK_A, LRCLK_D, BCLK,
SDIN, SDOUT ..................................-0.3V to (VDVDDS2 + 0.3V)
Continuous Current Into/Out of HPR/HPL/
LOUTL/LOUTR ...............................................................150mA
CPVDD/CPGND/C1P/C1N/PVSS ......................................300mA
Any Other Pin ......................................................................20mA
Duration of HPR/HPL/LOUTL/LOUTR Short Circuit
to AVDD/AGND/CPVDD/CPGND ............................Continuous
Continuous Power Dissipation (TA = +70°C)
40-Pin TQFN (derate 26.3mW/°C above +70°C,
single-layer board) ......................................................2105mW
40-Pin TQFN (derate 37mW/°C above +70°C,
multilayer board) .........................................................2963mW
Operating Temperature Ranges:
E Series.............................................................-40°C to +85°C
G Series ..........................................................-40°C to +105°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AVDD = CPVDD (inferred from HP output
PSRR)
1.71
1.80
3.60
Supply Voltage Range
DVDD, DVDDS2 (inferred from CODEC
performance tests)
1.71
1.80
3.60
V
IAVDD + ICPVDD
2.9
5.1
DAC playback mode
(fS = 44.1kHz) analog
IDVDD + IDVDDS2
2.3
IAVDD + ICPVDD
2.9
4.3
Line-only playback mode
(DAC/ADC disabled)
IDVDD + IDVDDS2
0.14
0.20
IAVDD + ICPVDD
3.9
5.4
DAC + line input
playback mode
(fS = 44.1kHz)
IDVDD + IDVDDS2
2.3
3.5
IAVDD + ICPVDD
11.0
15.5
Full operation, fS =
44.1kHz (DAC + ADC +
LINEIN + MIC + AUXIN)
IDVDD + IDVDDS2
3.7
4.5
IAVDD + ICPVDD
6.6
9.1
DAC playback, fS =
44.1kHz mono ADC
record fS = 8kHz
IDVDD + IDVDDS2
2.8
3.5
IAVDD + ICPVDD
7.8
10.5
Total Supply Current (Note 2)
IVDD
ADC record,
fS = 44.1kHz
IDVDD + IDVDDS2
2.3
3.5
mA
IAVDD + ICPVDD
2.2
10
Shutdown Supply Current
IDVDD + IDVDDS2
0.6
10
A
Shutdown to Full Operation
50
ms