LM48823, LM48823TLEVAL
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SNAS464E –JUNE 2008–REVISED OCTOBER 2010
LM48823
Mono, Bridge-Tied Load, Ceramic Speaker Driver with I
2
C Volume Control and Reset
Check for Samples: LM48823,LM48823TLEVAL
1FEATURES KEY SPECIFICATIONS
2• Integrated Charge Pump • Output Voltage at VDD = 4.2V, RL= 2.2µF + 15Ω
THD+N ≤1%: 5.4VRMS (typ)
• Bridge-Tied Load Output • Quiescent Power Supply Current at 4.2V:
• High PSRR 3.3mA (typ)
• I2C Volume and Mode Control • PSRR at 217Hz: 93dB (typ)
• Reset Input • Shutdown Current: 0.01μA (typ)
• Advanced Click-and-Pop Suppression
• Low Supply Current DESCRIPTION
• Minimum External Components The LM48823 is a single supply, mono, ceramic
• Micro-Power Shutdown speaker driver with an integrated charge-pump,
designed for portable devices, such as cell phones,
• Available in Space-Saving 16-Bump DSBGA where board space is at a premium. The LM48823
Package charge pump allows the device to deliver 5.4VRMS
from a single 4.2V supply.
APPLICATIONS The LM48823 features high power supply rejection
• Cell Phones ratio (PSRR), 93dB at 217Hz, allowing the device to
• Smart Phones operate in noisy environments without additional
power supply conditioning. Flexible power supply
• Portable Media Devices requirements allow operation from 2.0V to 4.5V. The
• Notebook PCs LM48823 features an active low reset input that
reverts the device to its default state. Additionally, the
LM48823 features a 32-step I2C volume control. The
low power Shutdown mode reduces supply current
consumption to 0.01µA.
The LM48823’s superior click and pop suppression
eliminates audible transients on power-up/down and
during shutdown. The LM48823 is available in an
ultra-small 16-bump DSBGA package (2mmx2mm).
1Please 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 © 2008–2010, 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.
VOLUME
CONTROL
I2C
INTERFACE
BIASING
VOLUME
CONTROL
CHARGE PUMP
INA
SDA
SCL
INB
C1P C1N VSS PGND
PVDD
OUTA
OUTB
SGND
VDD
CS
CIN
CIN
C1
C2
BYPASS
CBYPASS
I2CVDD
SVDD
RESET
I2CVDD
I2C
CONTROL
LM48823, LM48823TLEVAL
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Typical Application
Figure 1. Typical Audio Amplifier Application Circuit
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3
2
1
INB
BYPASS RESET SDA C1P
SGND SCL PGND
AB C D
OUTA C1N
4INA
OUTB
SVDD
I2CVDD PVDD
VSS
LM48823, LM48823TLEVAL
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SNAS464E –JUNE 2008–REVISED OCTOBER 2010
Connection Diagram
YZR Package
2mm x 2mm x 0.8mm
Figure 2. Top View
See Package Number YZR 16
Bump Descriptions
Pin Designator Pin Name Pin Function
A1 SVDD Signal Power Supply
A2 SGND Signal Ground
A3 BYPASS Amplifier Reference Bypass
A4 INA Amplifier Inverting input A
B1 OUTA Amplifier Inverting output A
B2 OUTB Amplifier Non-Inverting Output B
Active Low Reset Input. Connect to VDD for normal operation.
B3 RESET Toggle between VDD and GND to reset the device.
B4 INB Amplifier Non-Inverting Input B
C1 VSS Charge Pump Output
C2 SCL I2C Serial Clock Input
C3 SDA I2C Serial Data Input
C4 I2CVDD I2C Supply Voltage
D1 C1N Charge Pump Flying Capacitor Negative Terminal
D2 PGND Power Ground
D3 C1P Charge Pump Flying Capacitor Positive Terminal
D4 PVDD Power Supply
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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.
ABSOLUTE MAXIMUM RATINGS (1) (2)
Supply Voltage(1) 5.25V
Storage Temperature −65°C to +150°C
Input Voltage −0.3V to VDD +0.3V
Power Dissipation(3) Internally Limited
ESD Rating(4) 8kV
ESD Rating(5) 250V
Junction Temperature 150°C
Thermal Resistance
θJA (typ) - (TLA1611A) 63.2°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) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX,θJA, and the ambient temperature,
TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings,
whichever is lower.
(4) Human body model, applicable std. JESD22-A114C.
(5) Machine model, applicable std. JESD22-A115-A.
OPERATING RATINGS
Temperature Range
TMIN ≤TA≤TMAX −40°C ≤TA≤+85°C
Supply Voltage
PVDD and SVDD 2.0V ≤VDD ≤4.5V
I2CVDD 1.8V ≤I2CVDD ≤4.5V
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AUDIO AMPLIFIER ELECTRICAL CHARACTERISTICS VDD = 4.2V (1) (2)
The following specifications apply for AV= 6dB, RL= 2.2μF+15Ω, C1 = C2 = 2.2μF, f = 1kHz, unless otherwise specified.
Limits apply for TA= 25°C. LM48823 Units
Symbol Parameter Conditions Typical Limits (Limits)
(3) (4)
Quiescent Power Supply VIN = 0V, RL=∞
IDD 3.3 4.3 mA (max)
Current
ISD Shutdown Current Shutdown Enabled 0.01 1 µA (max)
Differential Output Offset
VOS VIN = 0V 0.5 3 mV (max)
Voltage
VIH Logic High Input Threshold RESET 1.4 V (min)
VIL RESET 0.4 V (max)
Minimum Gain Setting –70 dB
AVGain Maximum Gain Setting 24 dB
9 7 kΩ(min)
Maximum Gain Setting 9 11 kΩ(max)
RIN Input Resistance 80 64 kΩ(min)
Minimum Gain Setting 80 96 kΩ(max)
f = 1kHz 5.4 VRMS
VOOutput Voltage RL= 2.2μF+15Ω, THD+N = 1% f = 5kHz 3.1 VRMS
Total Harmonic Distortion + VO= 4VRMS
THD+N 0.015 %
Noise VRIPPLE = 200mVP-P Sine, Inputs AC f = 217Hz 93 82 dB (min)
Power Supply Rejection
PSRR GND, CIN = 1μF, input referred
Ratio f = 1kHz 93 dB
POUT = 40mW, RL= 16Ω
SNR Signal-to-Noise-Ratio 119 dB
f = 1kHz
∈OS Output Noise AV = 4dB, Input Referred, A-weighted Filter 5.5 μV
TWU Wake-Up Time 200 μs
(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 TA= +25ºC, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) Datasheet min/max specification limits are specified by test or statistical analysis.
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I2C INTERFACE CHARACTERISTICS VDD = 3.0V (1) (2)
The following specifications apply for AV= 6dB, RL= 2.2μF+15Ω, C1 = C2 = 2.2μF, f = 1kHz, unless otherwise specified.
Limits apply for TA= 25°C. LM48823 Units
Symbol Parameter Conditions (Limits)
Typical (3) Limits (4)
t1SCL period 2.5 μs (min)
t2SDA Setup Time 100 ns (min)
t3SDA Stable Time 0 ns (min)
t4Start Condition Time 100 ns (min)
t5Stop Condition Time 100 ns (min)
VIH Logic High Input Threshold 0.7 x I2CVDD V (min)
VIL Logic Low Input Threshold 0.3 x I2CVDD V (max)
(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 TA= +25ºC, and at the Recommended Operation Conditions at the time of
product characterization and are not ensured.
(4) Datasheet min/max specification limits are specified by test or statistical analysis.
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OUTPUT VOLTAGE (VRMS)
0
1
2
3
4
5
6
7
10 100 1000 10000 100000
FREQUENCY (Hz)
OUTPUT VOLTAGE (VRMS)
0
1
2
3
4
5
6
7
10 100 1000 10000 100000
FREQUENCY (Hz)
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10
THD+N (%)
OUTPUT VOLTAGE (VRMS)
VDD = 4.2V
VDD = 3.6V
0.001
0.01
0.1
1
10
100
0.01 0.1 1 10
THD+N (%)
OUTPUT VOLTAGE (VRMS)
VDD = 4.2V
VDD = 3.6V
0.0001
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
VOUT = 2.25VRMS,
ZL = 1 + 15
PF
VOUT = 1.75VRMS,
ZL= 2.2 PF + 15
0.0001
0.001
0.01
0.1
1
10
100
10 100 1000 10000 100000
FREQUENCY (Hz)
THD+N (%)
= 2.2 + 15
VOUT = 2VRMS,
ZL= 1 PF + 15
VOUT = 2.5VRMS,
ZL = 1 + 15
PF
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SNAS464E –JUNE 2008–REVISED OCTOBER 2010
TYPICAL PERFORMANCE CHARACTERISTICS
THD+N vs Frequency THD+N vs Frequency
VDD = 3.6V VDD = 4.2V
Figure 3. Figure 4.
THD+N vs Output Voltage THD+N vs Output Voltage
AV= 6dB, ZL= 1μF+15Ω, f = 1kHz AV= 6dB, ZL= 2.2μF+15Ω, f = 1kHz
Figure 5. Figure 6.
Output Voltage vs Frequency Output Voltage vs Frequency
VDD = 4.2V, ZL= 1μF+15Ω,THD+N = 1% VDD = 4.2V, ZL= 2.2μF+15Ω,THD+N = 1%
Figure 7. Figure 8.
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OUTPUT VOLTAGE (VRMS)
0
1
2
3
4
5
6
7
2 2.5 3 3.5 4 4.5
SUPPLY VOLTAGE (V)
f = 1 kHz
f = 10 kHz
OUTPUT VOLTAGE (VRMS)
0
1
2
3
4
5
6
7
2 2.5 3 3.5 4 4.5
SUPPLY VOLTAGE (V)
f = 1 kHz
f = 10 kHz
OUTPUT VOLTAGE (VRMS)
0
250
500
750
1000
1250
1500
0 1 2 3 4 5 6
POWER CONSUMPTION (mW)
f = 1 kHz
f = 10 kHz
OUTPUT VOLTAGE (VRMS)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
0 1 2 3 4 5 6 7
POWER CONSUMPTION (mW)
f = 10 kHz
f = 1 kHz
OUTPUT VOLTAGE (VRMS)
0
100
200
300
400
500
600
700
800
900
1000
0 1 2 3 4 5 6
POWER CONSUMPTION (mW)
f = 10 kHz
f = 1 kHz
OUTPUT VOLTAGE (VRMS)
0
100
200
300
400
500
600
700
800
900
1000
1100
0 1 2 3 4 5
POWER CONSUMPTION (mW)
f = 1 kHz
f = 10 kHz
LM48823, LM48823TLEVAL
SNAS464E –JUNE 2008–REVISED OCTOBER 2010
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Power Consumption vs Output Voltage Power Consumption vs Output Voltage
VDD = 3.6V, ZL= 1μF+15ΩVDD = 3.6V, ZL= 2.2μF+15Ω
Figure 9. Figure 10.
Power Consumption vs Output Voltage Power Consumption vs Output Voltage
VDD = 4.2V, ZL= 1μF+15ΩVDD = 4.2V, ZL= 2.2μF+15Ω
Figure 11. Figure 12.
Output Voltage vs Supply Voltage Output Voltage vs Supply Voltage
ZL= 1μF+15Ω, THD+N = 1% ZL= 2.2μF+15Ω, THD+N = 1%
Figure 13. Figure 14.
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0
0.0025
0.005
0.0075
0.01
0.0125
0.015
0.0175
0.02
2 2.5 3 3.5 4 4.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (PA)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
FREQUENCY (Hz)
PSRR (dB)
0
1
2
3
4
5
6
7
8
2 2.5 3 3.5 4 4.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
PSRR vs Frequency
VDD = 4.2V, VRIPPLE = 200mVP-P Supply Current vs Supply Voltage
ZL= 1μF+15Ω, Input referred No Load
Figure 15. Figure 16.
Shutdown Current vs Supply Voltage
No Load
Figure 17.
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SDA
SCL SP
START condition STOP condition
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APPLICATION INFORMATION
I2C COMPATIBLE INTERFACE
The LM48823 is controlled through an I2C compatible serial interface that consists of a serial data line (SDA) and
a serial clock (SCL). The clock line is uni-directional. The data line is bi-directional (open drain). The LM48823
and the master can communicate at clock rates up to 400kHz. Figure 18 shows the I2C interface timing diagram.
Data on the SDA line must be stable during the HIGH period of SCL. The LM48823 is a transmit/receive slave-
only device, reliant upon the master to generate the SCL signal. Each transmission sequence is framed by a
START condition and a STOP condition (Figure 19). Each data word, device address and data, transmitted over
the bus is 8 bits long and is always followed by an acknowledge pulse (Figure 20). The LM48823 device address
is 1110110.
I2C BUS FORMAT
The I2C bus format is shown in Figure 20. The START signal, the transition of SDA from HIGH to LOW while
SCL is HIGH, is generated, alerting all devices on the bus that a device address is being written to the bus.
The 7-bit device address is written to the bus, most significant bit (MSB) first, followed by the R/W bit. R/W = 0
indicates the master is writing to the slave device, R/W = 1 indicates the master wants to read data from the
slave device. Set R/W = 0; the LM48823 is a WRITE-ONLY device and will not respond to the R/W = 1. The data
is latched in on the rising edge of the clock. Each address bit must be stable while SCL is HIGH. After the last
address bit is transmitted, the master device releases SDA, during which time, an acknowledge clock pulse is
generated by the slave device. If the LM48823 receives the correct address, the device pulls the SDA line low,
generating an acknowledge bit (ACK).
Once the master device registers the ACK bit, the 8-bit register data word is sent. Each data bit should be stable
while SCL is HIGH. After the 8-bit register data word is sent, the LM48823 sends another ACK bit. Following the
acknowledgement of the register data word, the master issues a STOP bit, allowing SDA to go high while SCL is
high.
Figure 18. I2C Timing Diagram
Figure 19. Start and Stop Diagram
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VOLUME
CONTROL OUTA
CIN
VOLUME
CONTROL OUTB
CIN
MONO AUDIO SIGNAL
INA
INB
VOLUME
CONTROL OUTA
CIN
VOLUME
CONTROL OUTB
CIN
RIGHT CHANNEL AUDIO
SIGNAL
LEFT CHANNEL AUDIO
SIGNAL
INA
INB
START MSB DEVICE ADDRESS LSB ACK
SCL
SDA STOPMSB REGISTER DATA LSB ACK
R/W
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Figure 20. Example Write Sequence
Table 1. Device Address
B7 B6 B5 B4 B3 B2 B1 B0 R/W
Chip Address 1 1 1 0 1 1 0 0
Table 2. Mode Control Registers
Register Name B7 B6 B5 B4 B3 B2 B1 B0
Mode Control VOL4 VOL3 VOL2 VOL1 VOL0 0 ENABLE_A ENABLE_B
GENERAL AMPLIFIER FUNCTION
The LM48823 is a ceramic speaker driver that utilizes TI’s inverting charge pump technology to deliver over
15VP-P to a 2.2µF ceramic speaker while operating from a single 4.2V supply. The LM48823 features a unique
input stage that converts two single-ended audio signals into a mono BTL output. This stereo to mono conversion
is useful in applications where a stereo audio source is driving a single ceramic speaker, such as a ringer on a
cellular phone. Connect INA and INB as shown in Figure 21 for the stereo-to-mono conversion. When the
LM48823 is used with a single-ended mono audio source, connect both INA and INB to the audio source as
shown in Figure 22.
Figure 21. Stereo to Mono Conversion Connection Example
Figure 22. Mono Audio Source Connection Example
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VOLUME CONTROL
Table 3. Volume Control
Volume Step VOL4 VOL3 VOL2 VOL1 VOL0 Gain (dB)
1 0 0 0 0 0 –70
2 0 0 0 0 1 –56
3 0 0 0 1 0 –46
4 0 0 0 1 1 –38
5 0 0 1 0 0 –32
6 0 0 1 0 1 –28
7 0 0 1 1 0 –24
8 0 0 1 1 1 –21
9 0 1 0 0 0 –18
10 0 1 0 0 1 –15
11 0 1 0 1 0 –12
12 0 1 0 1 1 –10
13 0 1 1 0 0 –8
14 0 1 1 0 1 –6
15 0 1 1 1 0 –4
16 0 1 1 1 1 –2
17 1 0 0 0 0 0
18 1 0 0 0 1 2
19 1 0 0 1 0 4
20 1 0 0 1 1 6
21 1 0 1 0 0 8
22 1 0 1 0 1 10
23 1 0 1 1 0 12
24 1 0 1 1 1 14
25 1 1 0 0 0 16
26 1 1 0 0 1 18
27 1 1 0 1 0 19
28 1 1 0 1 1 20
29 1 1 1 0 0 21
30 1 1 1 0 1 22
31 1 1 1 1 0 23
32 1 1 1 1 1 24
SHUTDOWN FUNCTION
The LM48823 features a low-power shutdown mode that disables the device, lowering the quiescent current to
0.01µA. Set bits B1 (ENABLE_A) and B2 (ENABLE_B) to 0 to disable the amplifiers and charge pump. Set both
ENABLE_A and ENABLE_B to 1 for normal operation. Shutdown mode does not clear the I2C register. When re-
enabled, the device returns to its previous volume setting. To clear the I2C register, either remove power from the
device, or toggle RESET (see RESET section).
RESET
The LM48823 features an active low reset input. Driving RESET low clears the I2C register. Volume control is set
to 00000 (-70dB) and both ENABLE_A and ENABLE_B are set to 0, disabling the device. While RESET is low,
the LM48823 ignores any I2C data. After the device is reset, and RESET is driven high, the LM48823 remains in
shutdown mode with the volume set to -70dB. Re-enable the device by writing to the I2C register.
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PROPER SELECTION OF EXTERNAL COMPONENTS
Power Supply Bypassing/Filtering
Proper power supply bypassing is critical for low noise performance and high PSRR. Place the supply bypass
capacitors as close to the device as possible. Place a 1µF ceramic capacitor from VDD to GND. Additional bulk
capacitance may be added as required.
Bypass Capacitor Selection
The BYPASS capacitor, CBYPASS, improves PSRR, noise rejection and output offset. For best results, use a
capacitor of identical value to the input coupling capacitors
Charge Pump Capacitor Selection
Use low ESR ceramic capacitors (less than 100mΩ) for optimum performance.
Charge Pump Flying Capacitor (C1)
The flying capacitor (C1) affects the load regulation and output impedance of the charge pump. A C1 value that
is too low results in a loss of current drive, leading to a loss of amplifier headroom. A higher valued C1 improves
load regulation and lowers charge pump output impedance to an extent. Above 2.2µF, the RDS(ON) of the charge
pump switches and the ESR of C1 and C2 dominate the output impedance. A lower value capacitor can be used
in systems with low maximum output power requirements.
Charge Pump Hold Capacitor (C2)
The value and ESR of the hold capacitor (C2) directly affects the ripple on CPVSS. Increasing the value of C2
reduces output ripple. Decreasing the ESR of C2 reduces both output ripple and charge pump output impedance.
A lower value capacitor can be used in systems with low maximum output power requirements.
Input Capacitor Selection
Input capacitors block the DC component of the audio signal, eliminating any conflict between the DC component
of the audio source and the bias voltage of the LM48823. The input capacitors create a high-pass filter with the
input resistors RIN. The -3dB point of the high pass filter is found using Equation 1.
f = 1 / 2πRINCIN (Hz)
where
• the value of RIN is given in the Electrical Characteristics table. (1)
High pass filtering the audio signal helps protect the speakers. When the LM48823 is using a single-ended
source, power supply noise on the ground is seen as an input signal. Setting the high-pass filter point above the
power supply noise frequencies, 217Hz in a GSM phone, for example, filters out the noise such that it is not
amplified and heard on the output. Capacitors with a tolerance of 10% or better are recommended for impedance
matching and improved CMRR and PSRR.
PCB LAYOUT GUIDELINES
Minimize trace impedance of the power, ground and all output traces for optimum performance. Voltage loss due
to trace resistance between the LM48823 and the load results in decreased output power and efficiency. Trace
resistance between the power supply and ground has the same effect as a poorly regulated supply, increased
ripple and reduced peak output power. Use wide traces for power supply inputs and amplifier outputs to minimize
losses due to trace resistance, as well as route heat away from the device. Proper grounding improves audio
performance, minimizes crosstalk between channels and prevents switching noise from interfering with the audio
signal. Use of power and ground planes is recommended.
Place all digital components and route digital signal traces as far as possible from analog components and
traces. Do not run digital and analog traces in parallel on the same PCB layer. If digital and analog signal lines
must cross either over or under each other, ensure that they cross in a perpendicular fashion.
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LM48823TL DEMOBOARD BILL OF MATERIALS
Designator Quantity Description
2.2µF ±10% 10V X5R Ceramic Capacitor (603) Panasonic ECJ-1VB1A225K
C1, C2 2 Murata GRM033R6OJ104KE19D
C3 – C5 3 1µF ±10% 10V Tantalum Capacitor (402) AVX TACK105M010QTA
4.7µF ±10% 6.3V X5R Ceramic Capacitor (603) Panasonic ECJ-1VB0J475K
C6 1 Murata GRM188R6OJ475KE19D
0.1µF ±10% 6.3V X5R Ceramic Capacitor (201) Panasonic ECJ-ZEB0J104K
C7, C8 2 Murata GRM188R61A225KE34D
JU1 – JU5 5 2 Pin Header
JU6, JU7 3 2 Pin Header
J1 1 5-Pin I2C Header
LM4823TL 1 LM48823TL (16-Bump DSBGA)
DEMO BOARD SCHEMATIC
Figure 23. LM48823 Demo Board Schematic
14 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM48823 LM48823TLEVAL
LM48823, LM48823TLEVAL
www.ti.com
SNAS464E –JUNE 2008–REVISED OCTOBER 2010
PC BOARD LAYOUT
Figure 24. Top Silkscreen Layer Figure 25. Top Layer
Figure 26. Layer 2 Figure 27. Layer 3
Figure 28. Bottom Layer Figure 29. Bottom Silkscreen
Copyright © 2008–2010, Texas Instruments Incorporated Submit Documentation Feedback 15
Product Folder Links: LM48823 LM48823TLEVAL
LM48823, LM48823TLEVAL
SNAS464E –JUNE 2008–REVISED OCTOBER 2010
www.ti.com
REVISION HISTORY
Rev Date Description
1.0 06/27/08 Initial release.
1.01 07/15/08 Edited the Ordering Information table.
1.02 10/08/10 Updated some Limits (under Gain) in the Volume Control table.
16 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM48823 LM48823TLEVAL
PACKAGE OPTION ADDENDUM
www.ti.com 24-Sep-2015
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead/Ball Finish
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM48823TL/NOPB ACTIVE DSBGA YZR 16 250 Green (RoHS
& no Sb/Br) SNAGCU Level-1-260C-UNLIM GK6
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 24-Sep-2015
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
LM48823TL/NOPB DSBGA YZR 16 250 178.0 8.4 2.08 2.08 0.76 4.0 8.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 2-Sep-2015
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
LM48823TL/NOPB DSBGA YZR 16 250 210.0 185.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 2-Sep-2015
Pack Materials-Page 2
MECHANICAL DATA
YZR0016xxx
www.ti.com
TLA16XXX (Rev C)
0.600±0.075 D
E
A
. All linear dimensions are in millimeters. Dimensioning and tolerancing per ASME Y14.5M-1994.
B. This drawing is subject to change without notice.
NOTES:
4215051/A 12/12
D: Max =
E: Max =
1.99 mm, Min =
1.99 mm, Min =
1.93 mm
1.93 mm
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