SSM2301-MINI-EVALZ Analog Devices Inc, SSM2301-MINI-EVALZ Datasheet

BOARD EVAL MINI SSM2301

SSM2301-MINI-EVALZ

Manufacturer Part Number
SSM2301-MINI-EVALZ
Description
BOARD EVAL MINI SSM2301
Manufacturer
Analog Devices Inc
Datasheet

Specifications of SSM2301-MINI-EVALZ

Amplifier Type
Class D
Output Type
1-Channel (Mono)
Max Output Power X Channels @ Load
1.52W x 1 @ 8 Ohm
Voltage - Supply
2.5 V ~ 5 V
Operating Temperature
-40°C ~ 85°C
Board Type
Fully Populated
Utilized Ic / Part
SSM2301
Silicon Manufacturer
Analog Devices
Application Sub Type
Audio Power Amplifier - Class D
Kit Application Type
Amplifier
Silicon Core Number
SSM2301
Kit Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
FEATURES
Filterless Class-D amplifier with Σ-Δ modulation
No sync necessary when using multiple Class-D amplifiers
1.4 W into 8 Ω at 5.0 V supply with less than 1% THD + N
85% efficiency at 5.0 V, 1.4 W into 8 Ω speaker
Greater 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 8-lead, 3 mm × 3 mm LFCSP and MSOP packages
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 SSM2301 is a fully integrated, high efficiency, Class-D audio
amplifier 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 continuous output
power with less than 1% THD + N driving an 8 Ω load from
a 5.0 V supply.
The SSM2301 features a high efficiency, low noise modulation
scheme that does not require external LC output filters. The modu-
lation provides high efficiency even at low output power.
Rev. A
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.
from Analog Devices, Inc.
SHUTDOWN
AUDIO IN+
AUDIO IN–
0.01µF
0.01µF
NOTES
1
INPUT CAPS ARE OPTIONAL IF INPUT DC COMMON-MODE
VOLTAGE IS APPROXIMATELY V
1
1
IN+
IN–
GAIN
SD
SSM2301
FUNCTIONAL BLOCK DIAGRAM
CONTROL
GAIN
Mono 1.4 W Class-D Audio Amplifier
DD
/2.
BIAS
10µF
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The SSM2301 operates with 85% efficiency at 1.4 W into 8 Ω
from a 5.0 V supply and has a signal-to-noise ratio (SNR) that
is greater than 98 dB. Spread-spectrum modulation is used to
provide lower EMI-radiated emissions compared with other
Class-D architectures.
The SSM2301 has a micropower shutdown mode with a maximum
shutdown current of 30 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 SSM2301 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 SSM2301 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 by utilizing the gain control
select pin connected respectively to ground or to VDD. Gain
can also be adjusted externally by inserting a resistor in series
with each input pin.
The SSM2301 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 both an 8-lead, 3 mm ×
3 mm lead-frame chip scale package (LFCSP) and an 8-lead
MSOP package.
MODULATOR
OSCILLATOR
0.1µF
GND
VDD
Filterless High Efficiency
SUPPRESSION
DRIVER
POP/CLICK
FET
VBATT
2.5V TO 5.0V
DD
/2.
©2007 Analog Devices, Inc. All rights reserved.
OUT+
OUT–
SSM2301
www.analog.com

Related parts for SSM2301-MINI-EVALZ

SSM2301-MINI-EVALZ Summary of contents

Page 1

... Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Mono 1.4 W Class-D Audio Amplifier The SSM2301 operates with 85% efficiency at 1.4 W into 8 Ω from a 5.0 V supply and has a signal-to-noise ratio (SNR) that is greater than 98 dB. Spread-spectrum modulation is used to provide lower EMI-radiated emissions compared with other Class-D architectures ...

Page 2

... SSM2301 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 Configurations and Function Descriptions ........................... 5 Typical Performance Characteristics ............................................. 6 REVISION HISTORY 10/07—Rev Rev. A Added MSOP Package .......................................................Universal Changes to Features.......................................................................... 1 Changes to General Description .................................................... 1 Changes to Table 1 ...

Page 3

... A weighting V SNR Ω OUT L Rev Page Min Typ 1.22 1.52 590 775 275 345 85 = 5.0 V 0.1 = 3.6 V 0.04 DD 1.0 55 1.8 2.0 2 4.2 3.5 2 150 210 1.2 0 >100 35 98 SSM2301 Max Unit − 1 MHz mV 5 kΩ kΩ μs kΩ μV dB ...

Page 4

... SSM2301 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 listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 5

... Description Shutdown Input. Active low digital input. Gain Selection. Digital input. Noninverting Input. Inverting Input. Noninverting Output. Power Supply. Ground. Inverting Output. Rev Page SSM2301 SD OUT– SSM2301 GAIN GND 2 7 TOP VIEW IN+ VDD 3 6 (Not to Scale) IN– OUT Figure 3. MSOP Pin Configuration ...

Page 6

... SSM2301 TYPICAL PERFORMANCE CHARACTERISTICS 100 R = 8Ω, 15µH L GAIN = 6dB 0.1 0.01 0.0001 0.001 0.01 0.1 OUTPUT POWER (W) Figure 4. THD + N vs. Output Power into 8 Ω, A 100 R = 8Ω, 15µH L GAIN = 12dB 0.1 0.01 0.0001 0.001 0.01 0.1 OUTPUT POWER (W) Figure 5. THD + N vs. Output Power into 8 Ω ...

Page 7

... SHUTDOWN VOLTAGE (V) Figure 13. Shutdown Current vs. Shutdown Voltage f = 1kHz GAIN = 6dB R = 8Ω L 10% 1% 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE ( 1kHz GAIN = 12dB R = 8Ω L 10% 1% 3.0 3.5 4.0 4.5 SUPPLY VOLTAGE (V) SSM2301 = 5. Ω 5 dB Ω ...

Page 8

... SSM2301 100 0.2 0.4 0.6 0.8 OUTPUT POWER (W) Figure 16. Efficiency vs. Output Power into 8 Ω 8Ω, 15µH 0.18 L 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 OUTPUT POWER (W) Figure 17. Power Dissipation vs. Output Power into 8 Ω ...

Page 9

... SD INPUT OUTPUT 0 –1 –2 –10 – TIME (ms) Figure 22. Turn-On Response INPUT –1 –2 90 – Figure 23. Turn-Off Response Rev Page SSM2301 OUTPUT 100 120 140 160 180 TIME (ms) ...

Page 10

... Figure 24. Differential Input Configuration, Gain = 12 dB 0.1µF 10µF SSM2301 IN+ GAIN MODULATOR CONTROL IN– GAIN SD BIAS OSCILLATOR Figure 25. Single-Ended Input Configuration, Gain = 6 dB 0.1µF 10µF SSM2301 R IN+ GAIN MODULATOR R CONTROL IN– GAIN SD BIAS OSCILLATOR /2. DD Figure 26. Differential Input Configuration, User-Adjustable Gain Rev ...

Page 11

... OSCILLATOR SUPPRESSION GND 0.1µF 10µF VBATT 2.4V TO 5.0V VDD OUT+ FET MODULATOR DRIVER OUT– POP/CLICK BIAS OSCILLATOR SUPPRESSION GND /2. DD 0.1µF 10µF VBATT 2.4V TO 5.0V VDD OUT+ FET MODULATOR DRIVER OUT– POP/CLICK BIAS OSCILLATOR SUPPRESSION GND SSM2301 ...

Page 12

... SSM2301 automatically recovers without the need for a hard reset. GAIN SELECTION Pulling the GAIN pin of the SSM2301 high sets the gain of the speaker amplifier to 12 dB; pulling it low sets the gain of the speaker amplifier possible to adjust the SSM2301 gain by using external resistors at the input ...

Page 13

... This capacitor bypasses low frequency noises to the ground plane. For high frequency transients noises, use a 0.1 μF capacitor placed as close as possible to the VDD pin of the device. Placing the decoupling capacitor as close as possible to the SSM2301 helps maintain efficient performance. Rev Page SSM2301 ...

Page 14

... Range 1 SSM2301CPZ-R2 −40°C to +85°C 1 SSM2301CPZ-REEL −40°C to +85°C 1 SSM2301CPZ-REEL7 −40°C to +85°C 1 SSM2301RMZ-R2 −40°C to +85°C 1 SSM2301RMZ-REEL −40°C to +85°C 1 SSM2301RMZ-REEL7 −40°C to +85°C SSM2301-EVALZ RoHS Compliant Part. 3.00 0.60 MAX BSC SQ 8 2.75 ...

Page 15

... NOTES Rev Page SSM2301 ...

Page 16

... SSM2301 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06163-0-10/07(A) Rev Page ...

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