SSM2311CBZ-REEL7 Analog Devices Inc, SSM2311CBZ-REEL7 Datasheet

IC,Audio Amplifier,SINGLE,BGA,9PIN,PLASTIC

SSM2311CBZ-REEL7

Manufacturer Part Number
SSM2311CBZ-REEL7
Description
IC,Audio Amplifier,SINGLE,BGA,9PIN,PLASTIC
Manufacturer
Analog Devices Inc
Type
Class Dr
Datasheet

Specifications of SSM2311CBZ-REEL7

Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
3.3W x 1 @ 3 Ohm
Voltage - Supply
2.5 V ~ 5.5 V
Features
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Mounting Type
Surface Mount
Package / Case
9-WLCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
SSM2311-EVALZ - BOARD EVALUATION FOR SSM2311
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SSM2311CBZ-REEL7TR
FEATURES
Filterless Class-D amplifier with Σ-Δ modulation
No sync necessary when using multiple Analog Devices, Inc.,
3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with
90% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Better than 98 dB signal-to-noise ratio (SNR)
Single-supply operation from 2.5 V to 5.5 V
20 nA ultralow shutdown current
Short-circuit and thermal protection
Available in 9-ball, 1.5 mm × 1.5 mm WLCSP
Pop-and-click suppression
Built-in resistors reduce board component count
Default fixed 18 dB or user-adjustable gain setting
APPLICATIONS
Mobile phones
MP3 players
Portable gaming
Portable electronics
Educational toys
GENERAL DESCRIPTION
The SSM2311 is a fully integrated, high efficiency, Class-D 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 5.5 V
supply. It is capable of delivering 3 W of continuous output power
with less than 1% THD + N driving a 3 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.
Class-D amplifiers
less than 10% total harmonic distortion (THD)
AUDIO IN+
AUDIO IN–
GAIN =
SHUTDOWN
(37.5kΩ + R
22nF
22nF
300kΩ
1
1
1
R
R
INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY V
EXT
EXT
EXT
)
IN+
IN–
SD
FUNCTIONAL BLOCK DIAGRAM
SSM2311
37.5kΩ
37.5kΩ
300kΩ
300kΩ
BIAS
10µF
Mono 3 W Class-D Audio Amplifier
Figure 1.
DD
/2.
MODULATOR
OSCILLATOR
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The SSM2311 features a high efficiency, low noise modulation
scheme that does not require any external LC output filters. The
modulation continues to provide high efficiency even at low output
power. It operates with 90% efficiency at 1.4 W into 8 Ω or 85%
efficiency at 3 W into 3 Ω from a 5.0 V supply and has an SNR that
is better than 98 dB. Spread-spectrum pulse density modulation
is used to provide lower EMI-radiated emissions compared with
other Class-D architectures.
The SSM2311 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 device also includes pop-and-click suppression circuitry. 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 SSM2311 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 default gain of SSM2311 is 18 dB, but users can reduce the gain
by using a pair of external resistors (see the Gain section).
The SSM2311 is specified over the industrial temperature range
(−40°C to +85°C). It has built-in thermal shutdown and output
short-circuit protection. It is available in a 9-ball, 1.5 mm × 1.5 mm
wafer level chip scale package (WLCSP).
0.1µF
VDD
GND
Filterless High Efficiency
POP-AND-CLICK
SUPPRESSION
DRIVER
FET
VBATT
2.5V TO 5.0V
DD
/2.
©2008 Analog Devices, Inc. All rights reserved.
OUT+
OUT–
SSM2311
www.analog.com

Related parts for SSM2311CBZ-REEL7

SSM2311CBZ-REEL7 Summary of contents

Page 1

FEATURES Filterless Class-D amplifier with Σ-Δ modulation No sync necessary when using multiple Analog Devices, Inc., Class-D amplifiers 3 W into 3 Ω load and 1.4 W into 8 Ω load at 5.0 V supply with less than 10% total ...

Page 2

SSM2311 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

SSM2311 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 (Soldering, 60 sec) Stresses above those ...

Page 5

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic IN+ 1C IN− 3C OUT− 1B VDD 2A, 3B GND 3A OUT+ 2B PVDD BALL A1 CORNER SSM2311 ...

Page 6

SSM2311 TYPICAL PERFORMANCE CHARACTERISTICS 100 R = 8Ω, 33µH L GAIN = 18dB 0 3.6V DD 0.01 0.001 0.0001 0.001 0.01 0.1 OUTPUT POWER (W) Figure 3. THD + N vs. Output Power into ...

Page 7

GAIN = 18dB R = 8Ω, 33µ 0.1 0.5W 0.01 0.25W 0.001 10 100 1k 10k FREQUENCY (Hz) Figure 9. THD + N vs. Frequency 5 ...

Page 8

SSM2311 100 V = 2.5V DD GAIN = 18dB R = 8Ω, 33µ 0.1 0.125W 0.01 0.075W 0.001 10 100 1k FREQUENCY (Hz) Figure 15. THD + N vs. Frequency 2 100 ...

Page 9

GAIN = 18dB 3 4Ω, 33µH L 2.5 10% 2.0 1.5 1.0 0.5 0 2.5 3.0 3.5 4.0 SUPPLY VOLTAGE (V) Figure 21. Maximum Output Power vs. Supply Voltage 1kHz ...

Page 10

SSM2311 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT POWER (W) Figure 27. Efficiency vs. Output Power into 4 Ω ...

Page 11

V = 3. 4Ω, 33µH L 0.20 0.18 0.16 0.14 0.12 0.10 0.08 0.06 0.04 0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 OUTPUT ...

Page 12

SSM2311 8Ω, 33µH L –10 –20 –30 –40 –50 –60 –70 –80 10 100 1k FREQUENCY (Hz) Figure 39. Common-Mode Rejection Ratio vs. Frequency 3. rms RIPPLE – ...

Page 13

TYPICAL APPLICATION CIRCUITS 22nF AUDIO IN+ AUDIO IN– 22nF SHUTDOWN AUDIO IN+ SHUTDOWN 10µF 0.1µF 300kΩ SSM2311 1 37.5kΩ IN+ MODULATOR IN– 37.5kΩ 1 300kΩ SD BIAS OSCILLATOR 1 INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE VOLTAGE IS APPROXIMATELY ...

Page 14

SSM2311 22nF AUDIO IN+ AUDIO IN– 22nF SHUTDOWN 300kΩ GAIN = (37.5kΩ 22nF AUDIO IN+ 22nF SHUTDOWN 300kΩ GAIN = (37.5kΩ 10µF 0.1µF 300kΩ SSM2311 1 R 37.5kΩ IN+ EXT MODULATOR IN– R 37.5kΩ 1 EXT ...

Page 15

APPLICATION NOTES OVERVIEW The SSM2311 mono Class-D audio amplifier features a filterless modulation scheme that greatly reduces the external components count, conserving board space and thus reducing the system’s cost. The SSM2311 does not require an output filter, but instead ...

Page 16

SSM2311 INPUT CAPACITOR SELECTION The SSM2311 does not require input coupling capacitors if the input signal is biased from 1 − 1.0 V. Input capacitors DD are required if the input signal is not biased within this ...

Page 17

... OUTLINE DIMENSIONS BALL 1 IDENTIFIER (BALL SIDE DOWN) ORDERING GUIDE Model Temperature Range 1 SSM2311CBZ-R2 −40°C to +85°C SSM2311CBZ-REEL 1 −40°C to +85°C 1 SSM2311CBZ-REEL7 −40°C to +85°C SSM2311-EVALZ 1 1 SSM2311-MINI-EVALZ RoHS Compliant Part. 0.65 0.59 1.575 0.53 1.515 SEATING 1.455 PLANE ...

Page 18

SSM2311 NOTES Rev Page ...

Page 19

NOTES Rev Page SSM2311 ...

Page 20

SSM2311 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06161-0-1/08(0) Rev Page ...

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