SSM2302CPZ-REEL Analog Devices Inc, SSM2302CPZ-REEL Datasheet

IC,Audio Amplifier,DUAL,LLCC,16PIN,PLASTIC

SSM2302CPZ-REEL

Manufacturer Part Number
SSM2302CPZ-REEL
Description
IC,Audio Amplifier,DUAL,LLCC,16PIN,PLASTIC
Manufacturer
Analog Devices Inc
Type
Class Dr
Datasheet

Specifications of SSM2302CPZ-REEL

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
1.4W x 2 @ 8 Ohm
Voltage - Supply
2.5 V ~ 5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
16-LFCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
SSM2302Z-EVAL - BOARD EVAL FOR SSM2302
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SSM2302CPZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Filterless Class-D amplifier with built-in output stage
1.4 W into 8 Ω at 5.0 V supply with less than 1% THD
85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 98 dB SNR (signal-to-noise ratio)
Single-supply operation from 2.5 V to 5.0 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Available in 16-lead, 3 mm × 3 mm LFCSP
Pop-and-click suppression
Built-in resistors reduce board component count
Fixed and user-adjustable gain configurations
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
GENERAL DESCRIPTION
The SSM2302 is a fully integrated, high efficiency, Class-D stereo
audio amplifier. It is designed to maximize performance for
mobile phone applications. The application circuit requires a
minimum of external components and operates from a single
2.5 V to 5.0 V supply. It is capable of delivering 1.4 W of con-
tinuous output power with less than 1% THD + N driving an
8 Ω load from a 5.0 V supply.
The SSM2302 features a high efficiency, low noise modulation
scheme. It operates with 85% efficiency at 1.4 W into 8 Ω from a
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
RIGHT IN+
RIGHT IN–
LEFT IN+
LEFT IN–
1
INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY V
GAIN
0.01µF
0.01µF
0.01µF
0.01µF
1
1
1
1
INR+
INR–
SD
GAIN
INL+
INL–
SSM2302
FUNCTIONAL BLOCK DIAGRAM
CONTROL
CONTROL
GAIN
GAIN
DD
/2.
BIAS
10µF
Figure 1.
Class-D Stereo Audio Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
5.0 V supply and has a signal-to-noise ratio (SNR) that is better
than 98 dB. PDM modulation is used to provide lower EMI-
radiated emissions compared with other Class-D architectures.
The SSM2302 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. This minimizes voltage glitches at the output
during turn-on and turn-off, thus reducing audible noise on
activation and deactivation.
The fully differential input of the SSM2302 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 SSM2302 also has excellent rejection of power supply noise,
including noise caused by GSM transmission bursts and RF
rectification. PSRR is typically 63 dB at 217 Hz.
The gain can be set to 6 dB or 12 dB utilizing the gain control
select pin connected respectively to ground or V
also be adjusted externally by using an external resistor.
The SSM2302 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
Filterless High Efficiency
VDD
GND
DRIVER
DRIVER
FET
FET
VBATT
2.5V TO 5.0V
DD
/2.
©2006 Analog Devices, Inc. All rights reserved.
OUTR+
OUTR–
OUTL+
OUTL–
SSM2302
www.analog.com
DD
. Gain can

Related parts for SSM2302CPZ-REEL

SSM2302CPZ-REEL Summary of contents

Page 1

FEATURES Filterless Class-D amplifier with built-in output stage 1.4 W into 8 Ω at 5.0 V supply with less than 1% THD 85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker Better than 98 dB SNR (signal-to-noise ratio) ...

Page 2

SSM2302 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............................. ...

Page 3

SPECIFICATIONS 5 Ω, unless otherwise noted Table 1. Parameter DEVICE CHARACTERISTICS Output Power Efficiency Total Harmonic Distortion + Noise Input Common-Mode Voltage Range Common-Mode Rejection Ratio ...

Page 4

SSM2302 ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings apply at 25°C, unless otherwise noted. Table 2. Parameter Supply Voltage Input Voltage Common-Mode Input Voltage Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature Range (Soldering, 60 sec) ESD CAUTION ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic 1 OUTL+ 2 OUTL− INL+ 5 INL− INR− 9 INR+ 10 GAIN 11 OUTR− 12 OUTR+ 13 GND 14 ...

Page 6

SSM2302 TYPICAL PERFORMANCE CHARACTERISTICS 100 R = 8Ω, 33µH L GAIN = 12dB 0.1 0.01 0.000001 0.00001 0.0001 0.001 0.01 OUTPUT POWER (W) Figure 3. THD + N vs. Output Power into 8 Ω, A 100 ...

Page 7

0.1 0.2 0.3 0.4 0.5 0.6 SHUTDOWN VOLTAGE (V) Figure 9. Supply Current vs. Shutdown Voltage 1 1kHz GAIN = 2 1.4 ...

Page 8

SSM2302 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 10 100 1k FREQUENCY (Hz) Figure 15. Power Supply Rejection Ratio vs. Frequency 8Ω, 33µH L GAIN = 6dB –10 –20 –30 –40 –50 –60 ...

Page 9

TYPICAL APPLICATION CIRCUITS 0.01µF RIGHT IN+ RIGHT IN– 0.01µF SHUTDOWN V DD GAIN 0.01µF LEFT IN+ LEFT IN– 0.01µF 1 INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE VOLTAGE IS APPROXIMATELY V 0.01µF RIGHT IN 0.01µF SHUTDOWN GAIN 0.01µF LEFT ...

Page 10

SSM2302 EXTERNAL GAIN SETTINGS = 20 log[4/(1 + R/150kΩ)] 1 0.01µF RIGHT IN+ RIGHT IN– 1 0.01µF SHUTDOWN V DD GAIN 1 0.01µF LEFT IN+ LEFT IN– 1 0.01µF 1 INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE VOLTAGE IS ...

Page 11

EXTERNAL GAIN SETTINGS = 20 log[2/(1 + R/150kΩ)] SSM2302 1 0.01µF R INR+ RIGHT IN+ GAIN CONTROL INR– RIGHT IN– 0.01µF SD SHUTDOWN GAIN GAIN 1 0.01µF R INL+ LEFT IN+ GAIN CONTROL INL– LEFT IN– ...

Page 12

SSM2302 APPLICATION NOTES OVERVIEW The SSM2302 stereo Class-D audio amplifier features a filterless modulation scheme that greatly reduces the external components count, conserving board space and thus reducing systems cost. The SSM2302 does not require an output filter, but instead ...

Page 13

LAYOUT As output power continues to increase, care needs to be taken to lay out PCB traces and wires properly between the amplifier, load, and power supply. A good practice is to use short, wide PCB tracks to decrease voltage ...

Page 14

SSM2302 EVALUATION BOARD INFORMATION INTRODUCTION The SSM2302 audio power amplifier is a complete low power, Class-D, stereo audio amplifier capable of delivering 1.4 W/channel into 8 Ω load. In addition to the minimal parts required for the application circuit, measurement ...

Page 15

SSM2302 APPLICATION BOARD SCHEMATIC JP8 HEADER JP1 0.01µF LIN+ 3 LIN– LEFT IN 0.01µ JP9 HEADER 2 JP10 HEADER C10 0.01µF RIN+ 3 RIN– 2 C11 1 RIGHT ...

Page 16

SSM2302 SSM2302 STEREO CLASS-D AMPLIFIER EVALUATION MODULE COMPONENT LIST Table 6. Reference Description C8, C9, C10, C11 Capacitors, 0.01 μF C6, C7 Capacitor, 0.1 μF C5 Capacitor, 10 μF C1, C2, C3, C4 Capacitor R3, R4 Resistor, 100 ...

Page 17

SSM2302 APPLICATION BOARD LAYOUT Figure 29. SSM2302 Application Board Layout Rev Page SSM2302 ...

Page 18

... MAX 0.90 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 SSM2302CPZ-R2 −40°C to +85°C 1 SSM2302CPZ-REEL −40°C to +85°C 1 SSM2302CPZ-REEL7 −40°C to +85° Pb-free part. 3.00 0.60 MAX BSC SQ 0. 2.75 TOP BSC SQ VIEW (BOTTOM VIEW) 9 0.50 ...

Page 19

NOTES Rev Page SSM2302 ...

Page 20

SSM2302 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06051-0-6/06(0) Rev Page ...

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