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TI1-LM49200.pdf
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LM49200, LM49200TLEVAL
www.ti.com
SNAS459A –MAY 2009–REVISED APRIL 2013
LM49200 Stereo Class AB Audio Subsystem with a True
Ground Headphone Amplifier
Check for Samples: LM49200, LM49200TLEVAL
1
FEATURES
APPLICATIONS
2
• Differential Mono Input and Stereo Single-
• Portable Electronic Devices
Ended Input
• Mobile Phones
• 32-Step Digital Volume Control (-80 to +18dB)
• PDAs
• Three Independent Volume Channels (Left,
Right, Mono) DESCRIPTION
The LM49200 is a fully integrated audio subsystem
• Separate Headphone Volume Control
with a stereo power amplifier capable of delivering
• Flexible Output for Speaker and Headphone
500mW of continuous average power per channel
Output
into 8Ω with 1% THD+N using a 3.3V supply. The
• True Ground Headphone Amplifier Eliminates
LM49200 includes a separate stereo headphone
Large DC Blocking Capacitors Reducing PCB
amplifier that can deliver 35mW per channel into
Space and Cost
32Ω.
• Receiver Pass-Through Capability
The LM49200 has three input channels. A pair of
single-ended inputs and a fully differential input
• Soft Enable Function
channel. The LM49200 features a 32-step digital
• RF Immunity Topology
volume control on the input stage and an 8-step
• “Click and Pop” Suppression Circuitry
digital volume control on the headphone output stage.
• Thermal Shutdown Protection
The digital volume control and output modes are
• Micro-Power Shutdown
programmed through a two-wire I
2
C compatible
interface that allows flexibility in routing and mixing
• I
2
C Control Interface
audio channels.
• Available in Space-Saving DSBGA Package
The LM49200 is designed for cellular phone, PDA,
KEY SPECIFICATIONS and other portable handheld applications. The high
level of integration minimizes external components.
• Supply Voltage (VDD): 2.7V ≤ VDD ≤ 5.5V
The True Ground headphone amplifier eliminates the
• I2C Supply Voltage: 1.7V ≤ I2CVDD ≤ 5.5V
physically large DC blocking output capacitors
reducing required board space and reducing cost.
• Output power at VDD = 5V, 1% THD+N
– RL = 8Ω speaker: 1.25W (typ)
– RL = 32Ω headphone: 38mW (typ)
• Output power at VDD = 3.3V, 1% THD+N
– RL = 8Ω speaker: 520W (typ)
– RL = 32Ω headphone: 38mW (typ)
• PSRR:
– VDD = 3.3V, 217Hz ripple, Mono In: 95dB
(typ)
• Shutdown power supply current 0.02μA (typ)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
4
A
1
2
3
D
C
B
ROUT-
GND
LOUT+
LOUT-
E
ROUT+
V
DD
SCL
SDA
HPR
MIN+
LIN
BIAS
C1N
HPL
MIN-
RIN
V
SS
CP
C1P
CPGND
I
2
CV
DD
LM49200, LM49200TLEVAL
www.ti.com
SNAS459A –MAY 2009–REVISED APRIL 2013
Connection Diagram
Top View
Figure 2. 20 Bump DSBGA Package
(Bump Side Down)
See Package Number YZR0020BBA
Bump Descriptions
Bump Name Pin Function Type
A1 ROUT- Right Loudspeaker Negative Output Analog Output
A2 VDD Power Supply Power Input
A3 MIN+ Differential Mono Positive Input Analog Input
A4 MIN- Differential Mono Negative Input Analog Input
B1 ROUT+ Right Loudspeaker Positive Output Analog Output
B2 I
2
CV
DD
I
2
C power supply Power Input
B3 LIN Single-ended Left Input Analog Input
B4 RIN Single-ended Right Input Analog Input
C1 GND Power Ground Ground
C2 SCL I
2
C Clock Digital Input
C3 BIAS Half-Supply Bias point, capacitor bypassed Analog Output
C4 VSSCP Negative Charge Pump Power Supply Analog Output
D1 LOUT+ Left Loudspeaker Negative Output Analog Output
D2 SDA I
2
C Data Digital Input
D3 CIN Negative Terminal Charge Pump Flying Capacitor Analog Output
D4 CIP Positive Terminal Charge Pump Flying Capacitor Analog Output
E1 LOUT- Left Loudspeaker Positive Output Analog Output
E2 HPR Right Headphone Output Analog Output
E3 HPL Left Headphone Output Analog Output
E4 CPGND Charge Pump Ground Ground
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2009–2013, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: LM49200 LM49200TLEVAL
LM49200, LM49200TLEVAL
SNAS459A –MAY 2009–REVISED APRIL 2013
www.ti.com
Absolute Maximum Ratings
(1)(2)(3)
Supply Voltage
(1)
6.0V
Storage Temperature −65°C to +150°C
Voltage at Any Input Pin GND − 0.3 to V
DD
+ 0.3V
Power Dissipation
(4)
Internally Limited
ESD Rating
(5)
2000V
ESD Rating
(6)
200V
Junction Temperature (T
JMAX
) 150°C
Soldering Information Vapor Phase (60sec.) 215°C
Infrared (15sec.) 220°C
See AN-1112 “Micro SMD Wafer Level Chip Scale Package” (SNVA009).
Thermal Resistance θ
JA
45.1°C/W
(1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified
(2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not ensured.
(3) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(4) The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
, θ
JA
, and the ambient temperature,
T
A
. The maximum allowable power dissipation is P
DMAX
= (T
JMAX
- T
A
) / θ
JA
or the number given in Absolute Maximum Ratings,
whichever is lower.
(5) Human body model, applicable std. JESD22-A114C.
(6) Machine model, applicable std. JESD22-A115-A.
Operating Ratings
Temperature Range T
MIN
≤ T
A
≤ T
MAX
−40°C ≤ T
A
≤ 85°C
Supply Voltage (V
DD
) 2.7V ≤ V
DD
≤ 5.5V
Supply Voltage (I
2
CV
DD
) 1.7V ≤ I
2
CV
DD
≤ 5.5V
I
2
CV
DD
≤ V
DD
4 Submit Documentation Feedback Copyright © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM49200 LM49200TLEVAL
LM49200, LM49200TLEVAL
www.ti.com
SNAS459A –MAY 2009–REVISED APRIL 2013
Electrical Characteristics V
DD
= 3.3V
(1)(2)
The following specifications apply for V
DD
= 3.3V, T
A
= 25°C, all volume controls set to 0dB, unless otherwise specified.
LS = Loudspeaker, HP = Headphone.
LM49200
Units
Parameter Test Conditions
(Limits)
Typ
(3)
Limits
(4)
V
IN
= 0, No Loads
EP Receiver
1.2 1.7 mA (max)
(Output Mode Bit D4 = 1)
I
DD
Quiescent Power Supply Current
Stereo LS only (Mode 2) 4 5.5 mA (max)
Stereo HP only (Mode 8) 4.5 6.4 mA (max)
Stereo LS + Stereo HP (Mode 10) 7.0 9.8 mA (max)
I
SD
Shutdown Current 0.02 1 µA (max)
V
IN
= 0V, Mode 10
V
OS
Output Offset Voltage LS output, R
L
= 8Ω BTL 2.5 15 mV (max)
HP output, R
L
= 32Ω SE 1.4 5 mV (max)
LS output, Mode 2, R
L
= 8Ω BTL
520 450 mW (min)
THD+N = 1%, f = 1kHz
P
O
Output Power
HP output, Mode 8, R
L
= 32Ω SE
38 35 mW (min)
THD+N = 1%, f = 1kHz
LS output, f = 1kHz, R
L
= 8Ω BTL
0.05 %
P
O
= 250mW, Mode 2
THD+N Total Harmonic Distortion + Noise
HP output, f = 1kHz, R
L
= 32Ω SE
0.02 %
P
O
= 12mW, Mode 8
LS output, f = 1kHz,
V
REF
= V
OUT
(1%THD+N)
105 dB
Gain = 0dB, A-weighted
LIN & RIN AC terminated
SNR Signal-to-Noise Ratio
HP output, f = 1kHz,
V
REF
= V
OUT
(1%THD+N)
101 dB
Gain = 0dB, A-weighted
LIN & RIN AC terminated
A-weighted, Inputs terminated to AC GND, Output Referred
Right LS only, Mode 1 8 µV
LS: Mode 1 8 µV
LS: Mode 2 11 µV
ε
OUT
Output Noise
LS: Mode 3 14 µV
HP: Mode 4 8 µV
HP: Mode 8 9 µV
HP: Mode 12 11 µV
V
RIPPLE
= 200mV
PP
, f
RIPPLE
= 217Hz, C
B
= 2.2μF
All inputs AC terminated to GND, output referred
LS: Mode 1, R
L
= 8Ω BTL 95 dB
PSRR Power Supply Rejection Ratio
LS: Mode 2, R
L
= 8Ω BTL 75 dB
HP: Mode 4, R
L
= 32Ω SE 90 dB
HP: Mode 8, R
L
= 32Ω SE 80 dB
(1) “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the Recommended Operating Conditions is not implied. The Recommended Operating
Conditions indicate conditions at which the device is functional and the device should not be operated beyond such conditions. All
voltages are measured with respect to the ground pin, unless otherwise specified
(2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and
are not ensured.
(3) Typical values represent most likely parametric norms at T
A
= +25°C, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) Datasheet min/max specification limits are ensured by test or statistical analysis.
Copyright © 2009–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LM49200 LM49200TLEVAL
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