SSM2306-EVALZ Analog Devices Inc, SSM2306-EVALZ Datasheet

BOARD EVAL FOR SSM2306

SSM2306-EVALZ

Manufacturer Part Number
SSM2306-EVALZ
Description
BOARD EVAL FOR SSM2306
Manufacturer
Analog Devices Inc
Datasheet

Specifications of SSM2306-EVALZ

Design Resources
Analog Audio Input, Class-D Output with ADAU1701, SSM2306, and ADP3336 (CN0162)
Amplifier Type
Class D
Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
2.4W x 2 @ 4 Ohm
Voltage - Supply
2.5 V ~ 5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
SSM2306
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Filterless Class-D amplifier with built-in output stage
2 W into 4 Ω and 1.4 W into 8 Ω at 5.0 V supply
Ultralow idle current with load resistance
>87% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 96 dB SNR (signal-to-noise ratio)
Available in 16-lead, 3 mm × 3 mm LFCSP
Single-supply operation from 2.5 V to 5.0 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Pop-and-click suppression
Built-in resistors reduce board component count
Default fixed 18 dB gain and user-adjustable
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
Notebook computers
GENERAL DESCRIPTION
The SSM2306 is a fully integrated, high efficiency, Class-D stereo
audio amplifier designed to maximize performance for portable
applications. The application circuit requires minimum external
components and operates from a single 2.5 V to 5.0 V supply. It
is capable of delivering 2 W of continuous output power with less
than 10% THD + N driving a 4 Ω load from a 5.0 V supply.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
SHUTDOWN
GAIN = 344kΩ/(43kΩ + R
1
RIGHT IN+
RIGHT IN–
INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY V
LEFT IN+
LEFT IN–
22nF
22nF
22nF
22nF
1
1
1
1
R
R
R
R
EXT
EXT
EXT
EXT
EXT
)
INR+
INR–
SD
INL+
INL–
FUNCTIONAL BLOCK DIAGRAM
SSM2306
DD
/2.
43kΩ
43kΩ
43kΩ
43kΩ
344kΩ
344kΩ
344kΩ
344kΩ
BIAS
Figure 1.
10µF
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The SSM2306 features ultralow idle current, high efficiency, and
a low noise modulation scheme. It operates with >87% efficiency
at 1.4 W into 8 Ω from a 5.0 V supply and has a signal-to-noise
ratio (SNR) that is better than 96 dB. PDM modulation offers lower
EMI radiated emissions compared to other Class-D architectures.
The SSM2306 has a micropower shutdown mode with a typical
shutdown current of 20 nA. Shutdown is enabled by applying a
logic low to the SD pin.
The architecture of the device allows it to achieve a very low level
of pop and click to minimize voltage glitches at the output
during turn-on and turn-off, thereby reducing audible noise on
activation and deactivation. The fully differential input of the
SSM2306 provides excellent rejection of common-mode noise
on the input. Input coupling capacitors can be omitted if the dc
input common-mode voltage is approximately V
The SSM2306 also has excellent rejection of power supply noise,
including noise caused by GSM transmission bursts and RF
rectification.
The SSM2306 has a preset gain of 18 dB that can be reduced by
using external resistors.
The SSM2306 is specified over the commercial temperature range
(−40°C to +85°C). It has built-in thermal shutdown and output
short-circuit protection. It is available in a 16-lead, 3 mm × 3 mm
lead frame chip scale package (LFCSP).
MODULATOR
OSCILLATOR
MODULATOR
INTERNAL
0.1µF
GND
VDD
2 W, Filterless, Class-D
VDD
GND
Stereo Audio Amplifier
DRIVER
DRIVER
FET
FET
VBATT
2.5V TO 5.0V
©2007 Analog Devices, Inc. All rights reserved.
OUTR+
OUTR–
OUTL+
OUTL–
SSM2306
www.analog.com
DD
/2.

Related parts for SSM2306-EVALZ

SSM2306-EVALZ Summary of contents

Page 1

... The SSM2306 also has excellent rejection of power supply noise, including noise caused by GSM transmission bursts and RF rectification. The SSM2306 has a preset gain that can be reduced by using external resistors. The SSM2306 is specified over the commercial temperature range (−40°C to +85°C). It has built-in thermal shutdown and output short-circuit protection available in a 16-lead × ...

Page 2

... SSM2306 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. 6 REVISION HISTORY 4/07—Revision 0: Initial Version Typical Application Circuits ......................................................... 11 Application Notes ........................................................................... 12 Overview ..................................................................................... 12 Gain Selection............................................................................. 12 Pop-and-Click Suppression ...

Page 3

... V 0.615 DD = 2 2.5 V 0.275 DD = 5 5 3 3 2 2 5 5.0 V 0. 420 2.0 2 6.5 5.7 5 1.2 0 >100 Ω, A weighting 96 SSM2306 Max Unit − kHz mV 5 kΩ μs kΩ μV dB ...

Page 4

... SSM2306 ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings apply at 25°C, unless otherwise noted. Table 2. Parameter Supply Voltage Input Voltage Common-Mode Input Voltage ESD Susceptibility Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 5

... Inverting Input for Right Channel. Noninverting Input for Right Channel. No Connect. Noninverting Output for Right Channel. Inverting Output for Right Channel. Ground for Output Amplifiers. Power Supply for Output Amplifiers. Power Supply for Output Amplifiers. Ground for Output Amplifiers. Rev Page SSM2306 ...

Page 6

... SSM2306 TYPICAL PERFORMANCE CHARACTERISTICS 100 R = 4Ω, 33µ 18dB 3.6V DD 0.1 0.01 0.001 0.0001 0.001 0.01 0.1 OUTPUT POWER (W) Figure 3. THD + N vs. Output Power into 4 Ω, A 100 R = 8Ω, 33µ 18dB 2. 3.6V DD 0.1 0.01 0.001 0.0001 0.001 0.01 0.1 OUTPUT POWER (W) Figure 4. THD + N vs. Output Power into 8 Ω ...

Page 7

... L NO LOAD 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) Figure 13. Supply Current vs. Supply Voltage, No Load VDD = 5V VDD = 3.6V VDD = 2.5V 0.1 0.2 0.3 0.4 0.5 0.6 SHUTDOWN VOLTAGE (V) Figure 14. Supply Current vs. Shutdown Voltage SSM2306 0.25W 100k = 5.5 0.7 0.8 ...

Page 8

... SSM2306 3 1kHz A = 18dB 4Ω, 33µH L 2.5 2.0 10% 1.5 1.0 0.5 0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V) Figure 15. Maximum Output Power vs. Supply Voltage 1kHz A = 6dB 4Ω, 33µH L 2.5 2.0 10% 1.5 1.0 0.5 0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V) Figure 16.Maximum Output Power vs. Supply Voltage ...

Page 9

... P (W) O Figure 25. Supply Current vs. Output Power into 8 Ω 4Ω, 33µ FOR BOTH CHANNELS 3. 2. 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 P (W) O Figure 26. Supply Current vs. Output Power into 4 Ω SSM2306 = 4 Ω 1.4 1 2.0 2.2 ...

Page 10

... SSM2306 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 10 100 1k FREQUENCY (Hz) Figure 27. PSRR vs. Frequency 8Ω, 33µH L –10 –20 –30 –40 –50 –60 –70 –80 10 100 1k FREQUENCY (Hz) Figure 28. CMRR vs. Frequency 3. rms RIPPLE R = 8Ω, 33µH –20 L –40 –60 –80 –100 – ...

Page 11

... Figure 33. Stereo Single-Ended Input Configuration Rev Page VBATT 2.5V TO 5.0V VDD VDD OUTR+ FET OUTR– DRIVER OUTL+ FET OUTL– DRIVER GND GND VBATT 2.5V TO 5.0V VDD VDD OUTR+ FET DRIVER OUTR– OUTL+ FET DRIVER OUTL– GND GND SSM2306 ...

Page 12

... The SSM2306 also offers protection circuits for overcurrent and overtemperature protection. GAIN SELECTION The SSM2306 has a pair of internal resistors that set default gain for the amplifier possible to adjust the SSM2306 gain by using external resistors at the input. To set a gain lower than 18 dB, refer to Figure 32 for the differential input configu- ration and Figure 33 for the single-ended configuration ...

Page 13

... INPUT CAPACITOR SELECTION The SSM2306 does not require input coupling capacitors if the input signal is biased from 1 are required if the input signal is not biased within this recom- mended input dc common-mode voltage range, if high-pass filtering is needed (see Figure 32 using a single-ended source (see Figure 33) ...

Page 14

... MAX 0.90 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range SSM2306CPZ-R2 1 −40°C to +85°C 1 SSM2306CPZ-REEL −40°C to +85°C 1 SSM2306CPZ-REEL7 −40°C to +85° RoHS Compliant Part. 3.00 0.60 MAX BSC SQ 0. 2.75 TOP BSC SQ VIEW 9 (BOTTOM VIEW) ...

Page 15

... NOTES Rev Page SSM2306 ...

Page 16

... SSM2306 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06542-0-4/07(0) Rev Page ...

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