LM48823, LM48823TLEVAL
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SNAS464E – JUNE 2008 – REVISED OCTOBER 2010
LM48823
Mono, Bridge-Tied Load, Ceramic Speaker Driver with I2C Volume Control and Reset
Check for Samples: LM48823, LM48823TLEVAL
FEATURES
KEY SPECIFICATIONS
•
•
•
•
•
•
•
•
•
•
•
1
2
Integrated Charge Pump
Bridge-Tied Load Output
High PSRR
I2C Volume and Mode Control
Reset Input
Advanced Click-and-Pop Suppression
Low Supply Current
Minimum External Components
Micro-Power Shutdown
Available in Space-Saving 16-Bump DSBGA
Package
APPLICATIONS
•
•
•
•
Cell Phones
Smart Phones
Portable Media Devices
Notebook PCs
•
•
•
Output Voltage at VDD = 4.2V, RL = 2.2µF + 15Ω
THD+N ≤ 1%: 5.4VRMS (typ)
Quiescent Power Supply Current at 4.2V:
3.3mA (typ)
PSRR at 217Hz: 93dB (typ)
Shutdown Current: 0.01μA (typ)
DESCRIPTION
The LM48823 is a single supply, mono, ceramic
speaker driver with an integrated charge-pump,
designed for portable devices, such as cell phones,
where board space is at a premium. The LM48823
charge pump allows the device to deliver 5.4VRMS
from a single 4.2V supply.
The LM48823 features high power supply rejection
ratio (PSRR), 93dB at 217Hz, allowing the device to
operate in noisy environments without additional
power supply conditioning. Flexible power supply
requirements allow operation from 2.0V to 4.5V. The
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).
1
2
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.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2010, Texas Instruments Incorporated
LM48823, LM48823TLEVAL
SNAS464E – JUNE 2008 – REVISED OCTOBER 2010
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Typical Application
VDD
CS
SVDD
PVDD
CIN
INA
2
I CVDD
VOLUME
CONTROL
OUTA
VOLUME
CONTROL
OUTB
I2CVDD
I C
CONTROL
SDA
2
SCL
RESET
2
I C
INTERFACE
BYPASS
BIASING
CBYPASS
INB
CIN
CHARGE PUMP
C1P
C1N
C2
VSS
PGND
SGND
C1
Figure 1. Typical Audio Amplifier Application Circuit
2
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Connection Diagram
YZR Package
2mm x 2mm x 0.8mm
2
4
INA
INB
I CVDD
PVDD
3
BYPASS
RESET
SDA
C1P
2
SGND
OUTB
SCL
PGND
1
SVDD
OUTA
VSS
C1N
A
B
C
D
Figure 2. Top View
See Package Number YZR 16
Bump Descriptions
Pin Designator
Pin Name
A1
SVDD
Signal Power Supply
Pin Function
A2
SGND
Signal Ground
A3
BYPASS
A4
INA
B1
OUTA
Amplifier Inverting output A
B2
OUTB
Amplifier Non-Inverting Output B
B3
RESET
Active Low Reset Input. Connect to VDD for normal operation.
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
Amplifier Reference Bypass
Amplifier Inverting input A
I2C Supply Voltage
D1
C1N
D2
PGND
Charge Pump Flying Capacitor Negative Terminal
D3
C1P
Charge Pump Flying Capacitor Positive Terminal
D4
PVDD
Power Supply
Power Ground
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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
−65°C to +150°C
Storage Temperature
−0.3V to VDD +0.3V
Input Voltage
Power Dissipation
(3)
Internally Limited
ESD Rating (4)
8kV
ESD Rating (5)
250V
Junction Temperature
150°C
Thermal Resistance
θJA (typ) - (TLA1611A)
(1)
63.2°C/W
“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.
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.
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.
Human body model, applicable std. JESD22-A114C.
Machine model, applicable std. JESD22-A115-A.
(2)
(3)
(4)
(5)
OPERATING RATINGS
Temperature Range
TMIN ≤ TA ≤ TMAX
−40°C ≤ TA ≤ +85°C
Supply Voltage
2.0V ≤ VDD ≤ 4.5V
PVDD and SVDD
2
1.8V ≤ I2CVDD ≤ 4.5V
I CVDD
4
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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
Symbol
Parameter
Conditions
Typical
Limits
(4)
Units
(Limits)
(3)
IDD
Quiescent Power Supply
Current
VIN = 0V, RL = ∞
3.3
4.3
mA (max)
ISD
Shutdown Current
Shutdown Enabled
0.01
1
µA (max)
VOS
Differential Output Offset
Voltage
VIN = 0V
0.5
3
mV (max)
VIH
Logic High Input Threshold
RESET
1.4
V (min)
0.4
V (max)
VIL
RESET
AV
Gain
Minimum Gain Setting
–70
Maximum Gain Setting
24
Maximum Gain Setting
RIN
Input Resistance
Minimum Gain Setting
kΩ (max)
9
11
80
64
kΩ (min)
80
96
kΩ (max)
VRMS
3.1
VRMS
0.015
%
THD+N
PSRR
Power Supply Rejection
Ratio
VRIPPLE = 200mVP-P Sine, Inputs AC
GND, CIN = 1μF, input referred
SNR
Signal-to-Noise-Ratio
POUT = 40mW, RL = 16Ω
f = 1kHz
∈OS
Output Noise
AV = 4dB, Input Referred, A-weighted Filter
TWU
Wake-Up Time
(4)
kΩ (min)
5.4
Total Harmonic Distortion + VO = 4VRMS
Noise
(3)
7
f = 5kHz
Output Voltage
(2)
dB
9
f = 1kHz
VO
(1)
RL = 2.2μF+15Ω, THD+N = 1%
dB
f = 217Hz
93
f = 1kHz
93
82
dB (min)
dB
119
dB
5.5
μV
200
μs
“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.
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.
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.
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.
Symbol
Parameter
Conditions
LM48823
Typical
(3)
Limits
(4)
Units
(Limits)
t1
SCL period
2.5
μs (min)
t2
SDA Setup Time
100
ns (min)
t3
SDA Stable Time
0
ns (min)
t4
Start Condition Time
100
ns (min)
t5
Stop 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)
(2)
(3)
(4)
6
“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.
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.
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.
Datasheet min/max specification limits are specified by test or statistical analysis.
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TYPICAL PERFORMANCE CHARACTERISTICS
THD+N vs Frequency
VDD = 3.6V
100
100
10
10
1
VOUT = 1.75VRMS,
Z L = 2.2 PF + 15
THD+N (%)
THD+N (%)
1
VOUT = 2.25VRMS,
Z L = 1 PF + 15
0.1
0.01
0.001
0.001
0.0001
0.0001
10
100
1000
10000
10
100000
100
1000
10000
100000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 3.
Figure 4.
THD+N vs Output Voltage
AV = 6dB, ZL = 1μF+15Ω, f = 1kHz
THD+N vs Output Voltage
AV = 6dB, ZL = 2.2μF+15Ω, f = 1kHz
100
100
VDD = 4.2V
1
VDD = 4.2V
10
THD+N (%)
10
THD+N (%)
VOUT = 2VRMS,
1 PF ++ 15
15
Z L ==2.2
VOUT = 2.5VRMS,
Z L = 1 PF + 15
0.1
0.01
VDD = 3.6V
0.1
0.01
1
VDD = 3.6V
0.1
0.01
0.001
0.01
0.1
1
10
0.001
0.01
0.1
1
10
OUTPUT VOLTAGE (VRMS)
OUTPUT VOLTAGE (VRMS)
Figure 5.
Figure 6.
Output Voltage vs Frequency
VDD = 4.2V, ZL = 1μF+15Ω,THD+N = 1%
Output Voltage vs Frequency
VDD = 4.2V, ZL = 2.2μF+15Ω,THD+N = 1%
7
7
6
6
OUTPUT VOLTAGE (VRMS)
OUTPUT VOLTAGE (VRMS)
THD+N vs Frequency
VDD = 4.2V
5
4
3
2
1
0
10
5
4
3
2
1
100
1000
10000
100000
0
10
FREQUENCY (Hz)
100
1000
10000
100000
FREQUENCY (Hz)
Figure 7.
Figure 8.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Power Consumption vs Output Voltage
VDD = 3.6V, ZL = 1μF+15Ω
Power Consumption vs Output Voltage
VDD = 3.6V, ZL = 2.2μF+15Ω
1000
1100
f = 10 kHz
800
700
600
500
400
f = 1 kHz
300
200
900
800
700
600
500
f = 1 kHz
400
300
200
100
100
0
0
0
1
2
3
4
5
6
0
1
3
4
5
OUTPUT VOLTAGE (VRMS)
Figure 9.
Figure 10.
Power Consumption vs Output Voltage
VDD = 4.2V, ZL = 1μF+15Ω
Power Consumption vs Output Voltage
VDD = 4.2V, ZL = 2.2μF+15Ω
1300
1500
f = 10 kHz
1200
1100
f = 10 kHz
1000
900
800
700
600
500
400
f = 1 kHz
300
200
100
0
0
1
2
3
4
5
6
1250
1000
f = 1 kHz
500
250
0
1
2
3
4
5
6
OUTPUT VOLTAGE (VRMS)
OUTPUT VOLTAGE (VRMS)
Figure 11.
Figure 12.
Output Voltage vs Supply Voltage
ZL = 1μF+15Ω, THD+N = 1%
Output Voltage vs Supply Voltage
ZL = 2.2μF+15Ω, THD+N = 1%
7
7
6
OUTPUT VOLTAGE (VRMS)
OUTPUT VOLTAGE (VRMS)
750
0
7
6
f = 1 kHz
5
4
f = 10 kHz
3
2
1
0
f = 1 kHz
5
4
f = 10 kHz
3
2
1
2
2.5
3
3.5
4
4.5
0
2
SUPPLY VOLTAGE (V)
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2.5
3
3.5
4
4.5
SUPPLY VOLTAGE (V)
Figure 13.
8
2
OUTPUT VOLTAGE (VRMS)
POWER CONSUMPTION (mW)
POWER CONSUMPTION (mW)
f = 10 kHz
1000
POWER CONSUMPTION (mW)
POWER CONSUMPTION (mW)
900
Figure 14.
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TYPICAL PERFORMANCE CHARACTERISTICS (continued)
PSRR vs Frequency
VDD = 4.2V, VRIPPLE = 200mVP-P
ZL = 1μF+15Ω, Input referred
Supply Current vs Supply Voltage
No Load
0
8
-10
7
SUPPLY CURRENT (mA)
-20
PSRR (dB)
-30
-40
-50
-60
-70
-80
5
4
3
2
1
-90
-100
10
6
100
1000
10000
0
100000
2
FREQUENCY (Hz)
2.5
3
3.5
4
4.5
SUPPLY VOLTAGE (V)
Figure 15.
Figure 16.
Shutdown Current vs Supply Voltage
No Load
0.02
SUPPLY CURRENT (PA)
0.0175
0.015
0.0125
0.01
0.0075
0.005
0.0025
0
2
2.5
3
3.5
4
4.5
SUPPLY VOLTAGE (V)
Figure 17.
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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 slaveonly 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
SDA
SCL
S
P
START condition
STOP condition
Figure 19. Start and Stop Diagram
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SCL
SDA
START
MSB
DEVICE ADDRESS
ACK
R/W
LSB
MSB
REGISTER DATA
ACK
LSB
STOP
Figure 20. Example Write Sequence
Table 1. Device Address
B7
B6
B5
B4
B3
B2
B1
B0 R/W
1
1
1
0
1
1
0
0
Chip Address
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.
RIGHT CHANNEL AUDIO
SIGNAL
LEFT CHANNEL AUDIO
SIGNAL
CIN
INA
VOLUME
CONTROL
OUTA
INB
VOLUME
CONTROL
OUTB
CIN
Figure 21. Stereo to Mono Conversion Connection Example
MONO AUDIO SIGNAL
CIN
INA
VOLUME
CONTROL
OUTA
INB
VOLUME
CONTROL
OUTB
CIN
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 reenabled, 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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SNAS464E – JUNE 2008 – REVISED OCTOBER 2010
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.
Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM48823 LM48823TLEVAL
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13
LM48823, LM48823TLEVAL
SNAS464E – JUNE 2008 – REVISED OCTOBER 2010
www.ti.com
LM48823TL DEMOBOARD BILL OF MATERIALS
Designator
Quantity
Description
C1, C2
2
2.2µF ±10% 10V X5R Ceramic Capacitor (603) Panasonic ECJ-1VB1A225K
Murata GRM033R6OJ104KE19D
C3 – C5
3
1µF ±10% 10V Tantalum Capacitor (402) AVX TACK105M010QTA
C6
1
4.7µF ±10% 6.3V X5R Ceramic Capacitor (603) Panasonic ECJ-1VB0J475K
Murata GRM188R6OJ475KE19D
C7, C8
2
0.1µF ±10% 6.3V X5R Ceramic Capacitor (201) Panasonic ECJ-ZEB0J104K
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
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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
Product Folder Links: LM48823 LM48823TLEVAL
Submit Documentation Feedback
15
LM48823, LM48823TLEVAL
SNAS464E – JUNE 2008 – REVISED OCTOBER 2010
www.ti.com
REVISION HISTORY
16
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.
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Copyright © 2008–2010, Texas Instruments Incorporated
Product Folder Links: LM48823 LM48823TLEVAL
PACKAGE OPTION ADDENDUM
www.ti.com
10-Dec-2020
PACKAGING INFORMATION
Orderable Device
Status
(1)
Package Type Package Pins Package
Drawing
Qty
Eco Plan
(2)
Lead finish/
Ball material
MSL Peak Temp
Op Temp (°C)
Device Marking
(3)
(4/5)
(6)
LM48823TL/NOPB
ACTIVE
DSBGA
YZR
16
250
RoHS & Green
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)
RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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