How it Works
MAXIM
Loading...
MAX97001
Technical data
37 pgs3.19 Mb0
Table of contents
Loading...

MAXIM MAX97001 Technical data

19-5130; Rev 1; 7/10
EVALUATION KIT
AVAILABLE
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers
The MAX97001 mono audio subsystem combines a mono speaker amplifier with a stereo headphone ampli­fier and an analog DPST switch. The headphone and speaker amplifiers have independent volume control and on/off control. The 4 inputs are configurable as 2 differ­ential inputs or 4 single-ended inputs.
The entire subsystem is designed for maximum effi­ciency. The high-efficiency, 700mW, Class D speaker amplifier operates directly from the battery and con­sumes no more than 1FA in shutdown mode. The Class H headphone amplifier utilizes a dual-mode charge pump to maximize efficiency while outputting a ground­referenced signal that does not require output coupling capacitors.
The speaker amplifier incorporates a distortion limiter to automatically reduce the volume level when excessive clipping occurs. This allows high gain for low-level sig­nals without compromising the quality of large signals.
2
All control is performed using the 2-wire I
C interface. The MAX97001 operates over the extended -40NC to +85NC temperature range, and is available in the 2mm x
2.5mm, 20-bump, WLP package (0.5mm pitch).

Applications

Cell Phones
Portable Multimedia Players

Features

S 2.7V to 5.5V Speaker Supply Voltage
S
1.6V to 2V Headphone Supply Voltage
S
700mW Speaker Output (V
PVDD
= 3.7V, Z
+ 68µH)
S 37mW/Channel Headphone Output (RHP = 16I)
S
Low-Emission Class D Amplifier
S
Efficient Class H Headphone Amplifier
S
Ground-Referenced Headphone Outputs
S
2 Stereo Single-Ended/Mono Differential Inputs
S
Integrated Distortion Limiter (Speaker Outputs)
S
Integrated DPST Analog Switch
S
No Clicks and Pops
S
TDMA Noise Free
S
2mm x 2.5mm, 20-Bump, 0.5mm Pitch WLP
Package

Ordering Information

PART TEMP RANGE PIN-PACKAGE
MAX97001EWP+ -40NC to +85NC 20 WLP
+Denotes a lead(Pb)-free/RoHS-compliant package.
SPK
MAX97001
= 8ω

Simplified Block Diagram

BATTERY1.8V
POWER SUPPLY
STEREO/
MONO INPUT
STEREO/
MONO INPUT
_______________________________________________________________ Maxim Integrated Products 1
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.
LIMITER
I2C
CONTROL
VOLUME
VOLUME
MAX97001
CLASS H
AMPLIFIER
CHARGE
PUMP
CLASS D
AMPLIFIER
BYPASS
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
Table of ConTenTs
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Functional Diagram/Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
MAX97001
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Digital I/O Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
C TIMING Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
I
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Signal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Class D Speaker Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ultra-Low EMI Filterless Output Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Distortion Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Analog Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Headphone Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DirectDrive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Class H Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Low-Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2
C Slave Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
I
2
C Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
I
Table 1. Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 2. Input Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Mixers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 3. Mixer Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 4. Volume Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Distortion Limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Table 5. Distortion Limiter Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers
Table of ConTenTs (ConTinued)
Table 6. Power Management Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Charge-Pump Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 7. Charge-Pump Control Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2
C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
I
Bit Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
START and STOP Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Early STOP Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Write Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Read Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Applications Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Filterless Class D Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
RF Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Component Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Optional Ferrite Bead Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Input Capacitor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Charge-Pump Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Charge-Pump Flying Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Charge-Pump Holding Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Supply Bypassing, Layout, and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
WLP Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Package Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
MAX97001
3
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers

Functional Diagram/Typical Application Circuit

1.6V TO 2V 2.7V TO 5.5V
1µF 0.1µF 10µF
V
DD
B4
PVDD
D4
MAX97001
0.47µF
0.47µF
0.47µF
0.47µF
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL
INA1
INA2
INB1 D1
INB2 D2
COM1 C3
COM2 C4
PGAINA
-6dB TO +18dB
C1
PGAINA
-6dB TO +18dB
C2
+
PGAINB
-6dB TO +18dB
PGAINB
-6dB TO +18dB
INADIFF
INBDIFF
MUX
LPMODE
MIX
HPLMIX
MIX
HPRMIX
MIX
SPKMIX
HPLVOL:
-64dB TO +6dB
HPRVOL:
-64dB TO +6dB
SPKVOL:
-30dB TO +20dB
CLASS H
CLASS H
PVDD
CLASS D
+12dB
SPKEN
PGND
+
ANALOG SWITCHES
HPVDD
0/3dB
HPLEN
HPVSS
HPVDD
0/3dB
HPREN
HPVSS
THD LIMITER
LMTEN
BIAS
B1
BIAS
1µF
HPLA2
HPRA1
C5
OUTP
OUTN
D5
V
SDA B2
SCL B3
DD
2
I
C
INTERFACE
BYPEN
MAX97001
D3
GND
A4
C1P
V
DD
CHARGE PUMP
A5
C1N
B5
A3
HPVDD HPVSS
4
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers

ABSOLUTE MAXIMUM RATINGS

(Voltages with respect to GND.) V
, HPVDD ........................................................-0.3V to +2.2V
DD
PVDD ....................................................................-0.3V to +6.0V
HPVSS ..................................................................-2.2V to +0.3V
C1N .....................................(HPVSS - 0.3V) to (HPVDD + 0.3V)
C1P ...................................................... -0.3V to (HPVDD + 0.3V)
HPL, HPR ............................ (HPVSS - 0.3V) to (HPVDD + 0.3V)
INA1, INA2, INB1, INB2, BIAS ............................. -0.3V to +6.0V
SDA, SCL .............................................................-0.3V to +6.0V
COM1, COM2, OUTP, OUTN .................-0.3V to (PVDD + 0.3V)
Continuous Current In/Out of PVDD, GND, OUT_ ........ Q800mA
Continuous Current In/Out of HPR, HPL, VDD .............. Q140mA
Continuous Current In/Out of COM1, COM2 ................ Q150mA
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.

ELECTRICAL CHARACTERISTICS

(VDD = 1.8V, V HPRVOL = SPKVOL = 0dB, speaker loads (Z HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. Z T
= T
A
Speaker Amplifier Supply Voltage Range
Headphone Amplifier Supply Voltage Range
Quiecsent Supply Current
Shutdown Current I
Turn-On Time t
Input Resistance R
to T
MIN
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 3.7V, V
PVDD
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
= 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL =
GND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from
SPK
PVDD Guaranteed by PSRR test 2.7 5.5 V
V
DD
SHDN
ON
IN
Guaranteed by PSRR test 1.6 2 V
Low-power headphone mode, T
HP mode, T stereo SE input on INA, INB disabled
SPK mode, T mono differential Input on INB, INA disabled
SPK + HP mode, T +25NC, stereo SE input on INA, INB disabled
TA = +25NC, V
SHDN
Time from power-on to full operation, including soft-start
TA = +25NC, internal gain
= +25NC
A
= 0V
= +25NC,
A
A
Continuous Input Current (all other pins) ........................ Q20mA
Duration of OUT_ Short Circuit to GND or PVDD .....Continuous
Duration of Short Circuit Between
OUTP and OUTN ................................................... Continuous
Duration of HP_ Short Circuit to GND or V Continuous Power Dissipation (T 20-Bump WLP Multilayer Board
(derate 13mW/NC above +70NC)................................1040mW
Junction Temperature .....................................................+150NC
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +150NC
Soldering Temperature (reflow) ......................................+260NC
= J, RHP = J. C
SPK
= +25NC
=
A
Gain = -6dB, -3dB 41.2
Gain = 0dB, 3dB, 6dB, 9dB
Gain = +18dB 5.5 7.2 9.6
C1P-C1N
I
VDD
I
PVDD
I
VDD
I
PVDD
I
VDD
I
PVDD
I
VDD
I
PVDD
I
VDD + IPVDD
= 0V,
V
VDD
I
PVDD
= C
= +70NC)
A
= C
HPVDD
< 1
16 20.6 27
...........Continuous
DD
= C
HPVSS
1.35 1.85
0.35 0.55
1.35 1.85
0.75 1.15
0.32 0.6
1.38 2.2
1.35 1.85
1.8 2.7
8
10 ms
BIAS
= 1FF.
mA
FA
kI
MAX97001
5
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 1.8V, V HPRVOL = SPKVOL = 0dB, speaker loads (Z HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. Z T
= T
A
Feedback Resistance R
MAX97001
Maximum Input Signal Swing
Common-Mode Rejection Ratio
Input DC Voltage IN__ inputs 1.125 1.2 1.275 V Bias Voltage V
SPEAKER AMPLIFIER
Output Offset Voltage V
Click-and-Pop Level K
Power-Supply Rejection Ratio (Note 2)
Output Power (Note 3)
Total Harmonic Distortion Plus Noise
Signal-to-Noise Ratio SNR
Oscillator Frequency f Spread-Spectrum Bandwidth Q20 kHz Gain 11.5 12 12.5 dB Current Limit 1.5 A
to T
MIN
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 3.7V, V
PVDD
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
= 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL =
GND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from
SPK
= J, RHP = J. C
SPK
F
CMRR
BIAS
OS
CP
PSRR T
THD+N
OSC
TA = +25NC, external gain 19 20 21 kI Preamp = 0dB 2.3 Preamp = +18dB 0.29
Preamp = external gain
f = 1kHz (differential input mode), gain = 0dB
f = 1kHz (differential input mode), gain = 18dB
1.13 1.2 1.27 V
TA = +25NC, SPKM = 1 Q0.5 Q4
= +25NC, SPKMIX = 0x01, IN_DIFF = 0 Q1.5
T
A
Peak voltage, TA = +25NC, A-weighted, 32 samples per second, volume at mute (Note 2)
= +25NC
A
THD+N P 1%, f = 1kHz,
= 8I + 68FH
Z
SPK
f = 1kHz, P R
= 8I
SPK
A-weighted, SPKMIX = 0x03, referenced to 700mW
250 kHz
= 360mW, TA = +25NC,
OUT
Into shutdown -70
Out of shutdown -70
V
PVDD
5.5V
f = 217Hz, 200mV
f = 1kHz, 200mV
f = 20kHz, 200mV
V
PVDD
PVDD
V
PVDD
IN_DIFF = 0 (single-ended)
IN_DIFF = 1 (differential)
C1P-C1N
= 2.7V to
ripple
P-P
ripple
P-P
ripple
P-P
= 4.2V 920 = 3.7V 700 = 3.3V 550
= C
= C
HPVDD
2.3 x
RINEX/RF
55
32
50 77
73
73
57
0.05 0.6 %
96
96
HPVSS
= C
BIAS
= 1FF.
V
P-P
dB
mV
dBV
dB
mWV
dB
6
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 1.8V, V HPRVOL = SPKVOL = 0dB, speaker loads (Z HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. Z T
= T
MIN
to T
A
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Efficiency
Output Noise
CHARGE PUMP
Charge-Pump Frequency
Positive Output Voltage V
Negative Output Voltage V
Headphone Output Voltage Threshold
Mode Transition Timeouts
HEADPHONE AMPLIFIERS
Output Offset Voltage V
= 3.7V, V
PVDD
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
= 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL =
GND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from
SPK
= J, RHP = J. C
SPK
E
P
= 600mW, f = 1kHz 87 %
OUT
A-weighted, (SPKMIX = 0x01), IN_DIFF = 1, SPKVOL = -30dB
V
HPVDD
HPVSS
V
TH1
V
TH2
= V
HPL
= V
HPL
= V
V
HPL
V
, V
HPL
, V
V
HPL
V
, V
HPL
, V
V
HPL
Output voltage at which the charge pump switches between fast and slow clock
Output voltage at which the charge pump switches modes, V
= 0V, TA = +25NC 80 83 85
HPR
= 0.2V 665
HPR
= 0.5V 500
HPR
> V
HPR
HPR
HPR
HPR
< V > V < V
TH
TH
TH
TH
OUT
rising or falling
Time it takes for the charge pump to transition from Invert to split mode
Time it takes for the charge pump to transition from split to invert mode
OS
TA = +25NC, volume at mute Q0.15 Q0.6
= +25NC, HP_MIX = 0x1, IN_DIFF = 0 Q0.5
T
A
C1P-C1N
= C
HPVDD
= C
HPVSS
37 FV
V
DD
VDD/2
-V
DD
-VDD/2
QVDD
x 0.05
QV
x 0.21
DD
QVDD
x 0.08
QVDD
x 0.25
32 ms
20 Fs
= C
QVDD
x 0.13
QVDD
x 0.3
BIAS
MAX97001
= 1FF.
RMS
kHzV
V
V
V
mV
Click-and-Pop Level K
Power-Supply Rejection Ratio (Note 2)
PSRR T
CP
Peak voltage, TA = +25NC, A-weighted, 32 samples per second, volume at mute (Note 2)
= +25NC
A
Into shutdown -74
Out of shutdown
V
= 1.62V
DD
to 1.98V
-74
70 85
f = 217Hz, V
RIPPLE
200mV
P-P
=
84
f = 1kHz, V 200mV
RIPPLE
P-P
=
80
f = 20kHz, V 200mV
RIPPLE
P-P
=
69
dBV
dB
7
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 1.8V, V HPRVOL = SPKVOL = 0dB, speaker loads (Z HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. Z T
= T
A
Output Power P
Channel-to-Channel Gain
MAX97001
Tracking
Total Harmonic Distortion Plus Noise
Signal-to-Noise Ratio SNR
Slew Rate SR 0.35 V/Fs Capacitive Drive C Crosstalk HPL to HPR, HPR to HPL, f = 20Hz to 20kHz 68 dB
ANALOG SWITCH
On-Resistance R
Total Harmonic Distortion Plus Noise
Off-Isolation
PREAMPLIFIER
Gain
VOLUME CONTROL
Volume Level
to T
MIN
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
= 3.7V, V
PVDD
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
= 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL =
GND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from
SPK
= J, RHP = J. C
SPK
THD+N = 1%, f = 1kHz
OUT
T
= +25NC, HPL to HPR, HPLMIX = 0x01,
A
HPRMIX = 0x02, IN_DIFF = 0
THD+N P
L
ON
THD+N
= 10mW, f = 1kHz
OUT
A-weighted, R HPRMIX = 0x02, IN_DIFF = 0
200 pF
I
= 20mA, V
NC_
and PVDD, SWEN = 1
V
DIFCOM_
V
CMCOM_
f = 1kHz, SWEN = 1, Z
= 8I + 68FH
SPK
SWEN = 0, COM1 and COM2 to GND = 50I, f = 10kHz, referred to signal applied to OUTP and OUTN
PGAIN_ = 000 -6.5 -6 -5.5 PGAIN_ = 001 -3.5 -3 -2.5 PGAIN_ = 010 -0.5 0 +0.5 PGAIN_ = 011 2.5 3 3.5 PGAIN_ = 100 5.5 6 6.5 PGAIN_ = 101 8.5 9 9.5 PGAIN_ = 110 17.5 18 18.5
HP_VOL = 0x1F 5.5 6 6.5 HP_VOL = 0x00 -68 -64 -60 SPKVOL = 0x3F 19 20 -21 SPKVOL = 0x00 -31 -30 -29
= 16I, HPLMIX = 0x01,
HP
= 0V
COM_
= 2V = PVDD/2,
P-P
,
R R
T
T T
10I in series with each switch
No series resistors
C1P-C1N
= 16I 37
HP
= 32I 30
HP
R
= 32I 0.02
HP
= 16I 0.03 0.1
R
HP
= +25NC 1.6 4
A
= T
A
MIN
MAX
= C
to
= C
HPVDD
Q0.3 Q2.5 %
100 dB
5.2
0.05
0.3
90 dB
HPVSS
= C
BIAS
= 1FF.
mW
%
I
%
dB
dB
8
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 1.8V, V HPRVOL = SPKVOL = 0dB, speaker loads (Z HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. Z T
= T
A
Mute Attenuation f = 1kHz
Zero-Crossing Detection Timeout
LIMITER
Attack Time 1 ms
Release Time Constant
to T
MIN
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DIGITAL I/O CHARACTERISTICS

(V
= 3.7V, V
PVDD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS (SDA, SCL)
Input Voltage High V
Input Voltage Low V
Input Hysteresis V Input Capacitance C Input Leakage Current I
DIGITAL OUTPUTS (SDA Open Drain)
Output Low Voltage V
= 3.7V, V
PVDD
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
= 0V. TA = T
GND
= 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL =
GND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from
SPK
= J, RHP = J. C
SPK
Speaker 100 Headphone 110
100 ms
THDT1 = 0 1.4 THDT1 = 1 2.8
MIN
to T
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
IH
IL
HYS
IN
IN
OL
TA = +25NC ±1.0 FA
I
= 3mA 0.4 V
SINK
C1P-C1N
= C
0.75 x
= C
HPVDD
V
DD
200 mV 10 pF
V
HPVSS
= C
0.35 x V
BIAS
DD
MAX97001
= 1FF.
dB
s
V
9
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers

I2C TIMING CHARACTERISTICS

(V
= 3.7V, V
PVDD
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Serial-Clock Frequency f
Bus Free Time Between STOP and START Conditions
Hold Time (REPEATED) START Condition
MAX97001
SCL Pulse-Width Low t SCL Pulse-Width High t
Setup Time for a REPEATED START Condition
Data Hold Time t Data Setup Time t
SDA and SCL Receiving Rise Time
SDA and SCL Receiving Fall Time
SDA Transmitting Fall Time t
Setup Time for STOP Condition t Bus Capacitance C
Pulse Width of Suppressed Spike
= 0V. TA = T
GND
MIN
to T
SCL
t
BUF
t
HD,STA
LOW
HIGH
t
SU,STA
HD,DAT
SU,DAT
t
R
t
F
F
SU,STO
B
t
SP
, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
MAX
0 400 kHz
1.3 Fs
0.6 Fs
1.3 Fs
0.6 Fs
0.6 Fs
0 900 ns 100 ns
(Note 4)
(Note 4)
(Note 4)
20 +
0.1C
20 +
0.1C
20 +
0.1C
B
B
B
0.6 Fs 400 pF
0 50 ns
300 ns
300 ns
300 ns
Note 1: 100% production tested at T
= +25NC. Specifications over temperature limits are guaranteed by design.
A
Note 2: Amplifier inputs are AC-coupled to GND. Note 3: Class D amplifier testing performed with a resistive load in series with an inductor to simulate an actual speaker load. Note 4: C
Figure 1. I
is in pF.
B
CONDITION
SCL
SDA
2
C Interface Timing Diagram
START
28 9
1
CLOCK PULSE FOR
ACKNOWLEDGMENT
NOT ACKNOWLEDGE
ACKNOWLEDGE
10
Audio Subsystem with Mono Class D Speaker
and Class H Headphone Amplifiers

Typical Operating Characteristics

(V
= V
LDOIN
loads (Z
SPK
C
C1P-C1N
6
5
4
3
2
SUPPLY CURRENT (mA)
1
0
2.5 5.5
10
0
-10
-20
-30
-40
-50
-60
HEADPHONE VOLUME ATTENUATION (dB)
-70 0 35
10
1
0.1
THD+N (%)
PVDD
= 3.7V, V
GND
= V
= 0V. Single-ended inputs, preamp gain = 0dB, HPLVOL = HPRVOL = SPKVOL = 0dB. Speaker
PGND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from HPL or HPR to GND. Z
= C
SPEAKER ONLY INPUTS AC-COUPLED TO GND INPUT = INA V
SDA
= C
HPVDD
HPVSS
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
= V
= 3.3V
SCL
SUPPLY VOLTAGE (V)
= C
= 1μF. TA = +25°C, unless otherwise noted.)
BIAS
SHUTDOWN CURRENT vs. SUPPLY VOLTAGE
4.0 INPUTS AC-COUPLED TO GND
= V
SDA
SCL
= 3.3V
SUPPLY VOLTAGE (V)
V
3.5
MAX97001 toc01
3.0
2.5
2.0
1.5
SHUTDOWN CURRENT (µA)
1.0
0.5
5.04.54.03.53.0
0
2.5 5.5
SPEAKER VOLUME ATTENUATION
vs. VOLUME CONTROL CODE
30
8I LOAD
20
MAX97001 toc02
10
0
-10
-20
SPEAKER VOLUME ATTENUATION (dB)
-30
-40
5.04.54.03.53.0
0 70
VOLUME CONTROL CODE (NUMERIC)
HEADPHONE VOLUME ATTENUATION
vs. HP_VOL CODE
RIGHT AND LEFT 32I LOAD
HP_VOL CODE (NUMERIC)
THD+N vs. FREQUENCY
V
= 3.7V
PVDD
Z
= 8I + 68µF
SPK
SSM
10
V
= 3.7V
PVDD
Z
= 8I + 68µF
MAX97001 toc04
THD+N (%)
30255 10 15 20
SPK
1
P
= 600mW
OUT
0.1
0.01
0.001
0.01 100
P
= 200mW
OUT
FREQUENCY (kHz)
1010.1
MAX97001 toc05
10
1
0.1
THD+N (%)
0.01
0.001
THD+N vs. OUTPUT POWER
THD+N vs. FREQUENCY
MAX97001 toc07
100
10
1
THD+N (%)
0.1
V
PVDD
Z
= 8I + 68µF
SPK
fIN = 1kHz
= 5.0V
fIN = 6kHz
MAX97001 toc08
100
10
1
THD+N (%)
0.1
THD+N vs. FREQUENCY
V
= 3.7V
PVDD
Z
= 4I + 33µF
SPK
P
= 1000mW
OUT
0.01 100
THD+N vs. OUTPUT POWER
V
= 5.0V
PVDD
= 4I + 33µF
Z
SPK
fIN = 1kHz
SPK
P
=200mW
OUT
FREQUENCY (kHz)
fIN = 6kHz
= ∞, RHP = ∞.
605040302010
1010.1
MAX97001
MAX97001 toc03
MAX97001 toc06
MAX97001 toc09
0.01
FFM
0.001
0.01 100 FREQUENCY (kHz)
2400
0.01 f
= 100Hz
IN
0.001 0 4000
P
(mW)
OUT
350030002500200015001000500
0.01
f
= 100Hz
1010.1
0.001
IN
0
200
400
600
800
2200
1800
2000
1600
1400
1200
1000
P
(mW)
OUT
11
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
Typical Operating Characteristics (continued)
(V
LDOIN
loads (Z
C
C1P-C1N
= V
SPK
PVDD
= 3.7V, V
GND
= V
= 0V. Single-ended inputs, preamp gain = 0dB, HPLVOL = HPRVOL = SPKVOL = 0dB. Speaker
PGND
) connected between OUTP and OUTN. Headphone loads (RHP) connected from HPL or HPR to GND. Z
= C
HPVDD
= C
HPVSS
= C
= 1μF. TA = +25°C, unless otherwise noted.)
BIAS
= ∞, RHP = ∞.
SPK
100
V
= 4.2V
PVDD
= 8I + 68µF
Z
SPK
MAX97001
10
fIN = 6kHz
1
THD+N (%)
0.001
fIN = 1kHz
0.1
0.01
f
= 100Hz
IN
0 1600
P
OUT
THD+N vs. OUTPUT POWER
100
V
= 3.7V
PVDD
= 4I + 33µF
Z
SPK
C
= 1µF
10
IN
fIN = 6kHz
1
fIN = 1kHz
THD+N (%)
0.1
0.01 f
= 100Hz
IN
0.001
THD+N vs. OUTPUT POWER
0
200
400
600
800
P
OUT
(mW)
1000
(mW)
1200
1400
140012001000800600400200
1600
1800
MAX97001 toc10
MAX97001 toc13
2000
100
V
= 4.2V
PVDD
= 4I + 33µF
Z
SPK
10
1
fIN = 1kHz
THD+N (%)
0.1
0.01
0.001 0 3000
f
IN
= 100Hz
fIN = 6kHz
P
OUT
(mW)
EFFICIENCY vs. OUTPUT POWER
100
Z
= 8I + 68µF
SPK
90
80
THD+N vs. OUTPUT POWER
70
60
50
40
EFFICIENCY (%)
30
20
10
0
0 2.5
Z
SPK
P
(W)
OUT
2500200015001000500
= 4I + 33µF
V
= 5.0V
PVDD
fIN = 1kHz
2.01.51.00.5
MAX97001 toc11
MAX97001 toc14
100
V
= 3.7V
PVDD
= 8I + 68µF
Z
SPK
10
fIN = 6kHz
1
fIN = 1kHz
THD+N (%)
0.1
0.01
f
= 100Hz
0.001
IN
0 1200
P
(mW)
OUT
EFFICIENCY vs. OUTPUT POWER
100
Z
= 8I + 68µF
SPK
90
80
THD+N vs. OUTPUT POWER
70
60
50
40
EFFICIENCY (%)
30
20
10
0
Z
SPK
P
(W)
OUT
1000800600400200
= 4I + 33µF
V
= 3.7V
PVDD
fIN = 1kHz
1.41.20.8 1.00.4 0.60.20 1.6
MAX97001 toc12
MAX97001 toc15
OUTPUT POWER vs. SUPPLY VOLTAGE
2.0 fIN = 1kHz
1.8 Z
= 8I + 68µF
SPK
1.6
1.4
1.2
1.0
0.8
OUTPUT POWER (W)
0.6
0.4
0.2
0
THD+N = 10%
2.5 5.5 SUPPLY VOLTAGE (V)
12
THD+N = 1%
OUTPUT POWER vs. SUPPLY VOLTAGE
3.5 fIN = 1kHz Z
3.0
MAX97001 toc16
2.5
2.0
1.5
OUTPUT POWER (W)
1.0
0.5
5.04.53.0 3.5 4.0
= 4I + 33µF
SPK
THD+N = 10%
THD+N = 1%
0
2.5 5.5 SUPPLY VOLTAGE (V)
5.04.54.03.53.0
MAX97001 toc17
OUTPUT POWER vs. LOAD RESISTANCE
2.0
1.8
1.6
1.4
1.2
1.0
0.8
OUTPUT POWER (W)
0.6 THD+N = 1%
0.4
0.2
0
LOAD RESISTANCE (I)
V
PVDD
f
= 1kHz
IN
Z
SPK
THD+N = 10%
= 3.7V
= LOAD + 68µF
100101 1000
MAX97001 toc18
Loading...
+ 25 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use