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Texas Instruments TPA1517NEEVM - User guides
TPA1517NE
Audio Power Amplifier
Evaluation Module
DATA MANUAL: SLOU007
Date: July 1997
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Copyright  1999, Texas Instruments Incorporated
Read This First
About This Manual
The purpose of this document is to serve as a reference manual for
the TPA1517NE 6 Watt/Channel Stereo Audio Power Amplifier
Evaluation Module (SL0P105). This document provides information
on the optimal setup and operation of this product.
How to Use this Manual
This document contains the following chapters:
Chapter 1
Overview
A general description of the TPA1517NE, its key features, operating
specifications, and design notes.
Chapter 2
Hardware
A description of the TPA1517NE, hardware including board
schematic, connections, layout and bill of materials.
3
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4
Contents
1. Quick Start ..................................................................................................................... 6
1.1 Introduction .................................................................................................................... 7
1.2 Layout Definition ............................................................................................................ 7
1.3 Operation Notes............................................................................................................. 8
2.1 Schematic .................................................................................................................... 10
2.2 Input/Output Connections ............................................................................................ 11
2.3 Controls........................................................................................................................ 12
2.4 Layout .......................................................................................................................... 13
2.5 Bill of Materials ............................................................................................................ 15
Figures
FIGURE 1. TPA1517NE COMPONENT PLACEMENT ................................................................. 7
FIGURE 2. TPA1517NE EVM SCHEMATIC ........................................................................... 10
FIGURE 3. INPUT/OUTPUT CONNECTIONS.............................................................................. 11
5
I. Quick Start for P-N-P Kit
Included below is a quick checklist of setup steps to get the
TPA1517NE up and running fast.
1. Set S1 to the “off” position.
2. Align the TPA1517NE with socket U2, such that the side with 4
pins is adjacent to socket U1, and firmly connect it to the P-N-P
board.
3. Check the power supply jumper setting on the P-N-P board. To
use battery power select JP3, to select wall mount AC/DC power
select JP2, or to use a bench type DC power supply select JP1
Note: be sure only one of these three jumpers is connected by
a shorting block.
4. Check the mode/mute jumper circuitry (JP6, JP7, JP8). To begin
with, set JP7 to Lo, JP8 to Lo and JP6 to Mute. This arrangement
causes the TPA1517NE to be active when no headphones are
present. In the future refer to Table 1 in the P-N-P board
Application Report (SLOU001) to adjust these settings.
5. Check the Audio Input Path Selection Circuitry, if there is no EVM
present in U1, then set S2 to the “off” position
6. Set S3 to the “U5” position (only if U5 EVM is present).
7. Connect a mono audio source to either J3 or J5 (or both), or
connect a stereo audio source to J4.
8. Connect a 4 or 8 ohm speaker(s) to either (or both of) the RCA
jacks at J7 and J9 or to the wire clips at J8.
9. Connect your power supply to the P-N-P board.
10. Push S1 to the “on” position, and activate your audio source.
Step 10 will activate the EVMs present on the P-N-P. If you do not
hear sound, please consult the troubleshooting section of the P-N-P
Board application report (SLOU001).
6
Introduction
1.1 Introduction
The TPA1517NE EVM (SLOP105) is designed to provide the circuitry
required to evaluate the TPA1517NE performance without having to
invest in PCB layout or assembly. Refer to the application note in the
TPA1517 data sheet (SLOS162A) for a description of the circuit
configuration and selection of components.
1.2 Layout Description
Figure 1 - TPA1517NE
Lit. # SLOP105
RIN
+ C8
R1
C1
GND
C6
+
C5
TPA1517NE
TPA1517NE
GND
R11
D2
D1
C2
S2
R6
C3
Q2
U1 Q1
C7
R9
R10
GND
R2
LIN
ROUT
GND
GND +12V
R3
S1
R8
R4
R5
R7
MUTE
S3
C4
+
TPA1517NE SAMPLE EVM REV. A
GND
GND
LOUT
7
Layout Definition
TPA1517NE
U1 - TPA1517NE
stereo 5 W Audio Amplifier
C1, 2, 6, 7 - Capacitor, 1.0 µF, Ceramic
C3, 4 - Capacitor, 470 µF 16 V Alum Elect
C5 - Capacitor, 2.2 µF, Ceramic
C8 - Capacitor, 100 µF, 25 V Alum Elect
R1, 2 - Potentiometer, 50 kΩ, 3/4 Turn
R3, 4, 9 - Resistor, 10 kΩ Carbon
R5, 6 - Resistor, 47 kΩ Carbon
R7, 10 - Resistor, 1 kΩ Carbon
R8, - Resistor, 6.8 kΩ Carbon
R11 - Resistor, 220 Ω Carbon
S1, 2, - Jumper
S3, - Switch, Norm Open, Momentary
1.3 Operation Notes
The TPA1517NE EVM (SLOP105) was designed to plug into TI’s P-NP Audio Evaluation Platform (SLOP097). Slot U2 on the P-N-P also is
compatible with the TPA1517DWP EVM. No soldering is required for
use in the P-N-P system. Standard speaker jacks, RCA jacks and 1/8”
headphone jacks are provided on the P-N-P for quick and easy
evaluation of all TI audio power amplifiers. The TPA1517 is designed
to drive 4 ohm speakers up to 6W.
8
Operation Notes
The connection pins of the TPA1517NE EVM are on a 0.1” grid for
easy interface to standard plugboard based prototype systems.
The Thermal layout of the EVM is important. Linear Audio Power
Amplifiers dissipated large amounts of heat during operation. The
data sheet for the TPA1517 (SLOS162A) details heat dissipation for
12 and 14.5 volt operation. The 20-Pin DIP NE package has a special
internal design where pins 10 through 20 are thermally connected to
the chip. These pins must then be thermally connected to as much
copper areas as possible on the surface of the PCB or to internal
ground planes. Special consideration should be given to the thermal
layout due to the effect on maximum ambient temperature operation.
Copper area on the surface should then be connected to the ground
plane layer by vias. The vias should not use WEBed connections but
should have a solid connection to the copper areas. The solid
connections make a much better thermal connection.
9
Schematic
2.1 Schematic
TPA1517NE EVM Circuit
SLOP105
V
GND
PUMP UP THE VOLUME
CC
In Right
(RIN)
R1
50 k
C8
100 uF
C6
1 uF
C1
1 uF
D2
1N914
In Left
(LIN)
R2
50 k
Out Right
GND
R11
220
D1
1N914
C3
470 uF
S2
depop
C2
1 uF
VCC
R3
10 k
R6
47 k
C5
2.2 uF
3
2
1
Vo 1
SVRR
SGND
In 1 +
GND/HS
GND/HS
GND/HS
GND/HS
PGND
GND/HS
4
5
Vo 2
GND/HS
GND/HS
6
VCC
GND/HS
7
M/SB
GND/HS
8
In 2 +
GND/HS
9
GND/HS
10
R8
6.8 k
S1
M/SD
R4 R5
10 k 47 k
Q1,2
FMMT
3904CT
R9
10 k
R7
1k
Mute/STBY
(Mute)
S3
Mute
R10
1k
C7
1 uF
C4
470 uF
Out Left
20
19
18
17
16
15
14
13
12
11
GND
= Ground Plane
= Signal Ground
Figure 2 - Schematic of 1517NE EVM
Power: 9.5 to 15 Vdc, 2.5 A peak, 0.5 A rms (Normal Music Input).
Audio Inputs: Stereo, Cap Coupled
Speaker Outputs: 4 ohm drive, 3 W rms/Channel (Tone Output)
8 ohm drive, 1.5 W rms/Channel (Tone Output)
10
Input/Output Connections
2.2 Input/Output Connections
TPA1517NE EVM Hookup Diagram
9.5 V to 15 V DC
+
TPA
PUMP UP THE VOLUME
C1
10 uF
Power Supply
-
Lit. # SLOP105
RIN
Audio Input
+ C8
R1
GND
C1
C6
R11
D2
D1
+
C5
C2
TPA1517NE
TPA1517NE
S2
R6
R9
R10
R2
LIN
C3
Q2
U1 Q1
C7
GND
Standard 1/8”
Stereo Jack
ROUT
GND
GND
GND +12V
R3
S1
R8
R4
R5
R7
MUTE
S3
C4
+
TPA1517NE SAMPLE EVM REV. A
GND
GND
LOUT
S1 - In = Shutdown Mode, Out = Mute Mode
S2 - In = Depop Enhance Mode, Out = Depop Off
S3 - Press and hold to Mute/Shutdown (according to S1 setting).
R1, 2 - Volume Control, 3/4 Turn, Full Clockwise = Maximum Volume
04/19/97
Figure 3. EVM Connections Diagram
The connections diagram shows a stereo output drive system using the
TPA1517NE EVM (SLOP105) configured to drive stereo speakers. A
standard 1/8” stereo input jack is shown providing a convenient connection to
CD players or other commercial sources of audio signals.
Key Features:
The key features of the system are:
1) Stereo Single Ended (SE) drive of 4 ohm or 8 ohm speakers. The input
and output coupling capacitors are included on the EVM making connections
very simple.
2) Mute of the Speaker Drive - Either pressing the Mute switch or providing
an external TTL control of the Mute input allows one to mute the speaker
output.
3) The special DIP NE package is thermally connected the PCB ground
plane for enhanced thermal performance.
11
Controls
2.3 Controls
Mute/Standby Select - S1: Jumper in place sets low current standby
mode. Jumper out sets mute mode. Mode is activated by Switch S3
or external TTL input at Mute input.
Depop Select - S2: Jumper in place selects enhanced Depop mode.
Jumper out disables depop circuitry.
Mute Input/Switch - S3: Low activates mute/standby (S1) circuitry.
Switch S3 is a momentary action push button. Press S1 to mute.
R1/R2 Gain Control Pots: 3/4 turn adjusts amplifier Volume.
Clockwise increases volume.
The M/SB pin of the IC (PIN 8) operates over a range of voltages. 2
volts is standby mode, 3.4 to 8.8 volts is mute mode and 9.2 to Vcc is
operate mode. Transistors Q1 and Q2 form a network to allow TTL
control of the M/SB function. S1 determines the active voltage range
of the transistor circuit into M/SB. When S1 is in place transistor Q2
pulls M/SB to 0 volts (Standby mode), when S1 is out, resistor R8
forms a divider network with R3 to set the voltage in the Mute range.
Typically mute mode pop noises are not as loud as standby mode
pops.
Diodes D1 and D2 when enabled by S2 allow the charge on the output
coupling caps to drain during standby mode. This helps reduce pop
noises when returning to operating mode.
12
Board Layout
2.4 Layout
NOTE: Layouts are not to scale.
13
NOTE: Layouts are not to scale.
14
Bill of Materials
2.5 Bill of Materials
DESCRIPTION
CAP., 1.0UF, +80/-20%, NON
POLARIZED, SMD SIZE 1206
CAP., 2.2UF,20%, NON
POLARIZED, SMD SIZE 1206
CAP, 470UF, +80/-20%,16VDC,
ALUMINUM ELECTROLYTIC,
XXMM DIA,7MM CTRS.
CAP, 100UF, +80/-20%,16VDC,
ALUMINUM ELECTROLYTIC
,10MM DIA,5MM CTRS.
POT., 50 K OHM, 1/2W,
20%,THRU HOLE
RES., 10 K OHM, 1/10W, 5%,
SMD, SIZE 0805
RES., 1 K OHM, 1/10W, 1%, SMD,
SIZE 0805
RES., 47 K OHM, 1/10W, 5%,
SMD, SIZE 0805
RES., 6.98 K OHM, 1/10W, 1%,
SMD, SIZE 0805
RES., 220 OHM, 1/10W, 1%,
SMD, SIZE 0805
SWITCH, MOMENTARY, SMD
REF.
DESIG.
C1,C2,C6,
C7
C5
C3,C4
MANUFAC.
DIGI KEY
PART NUMBER
PART NUMBER
(MURATA) GRM42- (NEWARK)
6Y5V105Z16BL
93F2254
(TDK)
C3216X5R1A225
(PANASONIC)
(DIGI-KEY)
ECE-A1CF471
P6708-ND
PCBA
Qty
4
1
2
C8
(PANASONIC)
ECE-A1CF101
(DIGI-KEY)
P6705-ND
1
R1,R2
(DIGI-KEY)
3323P-503-ND
(DIGI-KEY)
P10KABK-ND
(DIGI-KEY)
P1.00KCCT-ND
(DIGI-KEY)
P47KABK-ND
(DIGI-KEY)
P6.98KCCT-ND
(DIGI-KEY)
P221CCT-ND
(DIGI-KEY)
P8048SCT-ND
2
(DIGI-KEY)
2163-02-ND
(DIGI-KEY)
953170-30-ND
(DIGI-KEY)
FMMT3904CT-ND
(DIGI-KEY)
LL4148CT-ND
2
HEADER, 1X2,2MM CTRS.
S1,S2
(BOURNS)
3323P SERIES 50K
(PANASONIC)
ERJ-6GEYJ103V
(PANASONIC)
ERJ-6GEYJ102V
(PANASONIC)
ERJ-6GEYJ473V
(PANASONIC)
ERJ-6GEYJ698V
(PANASONIC)
ERJ-6GEYJ221V
(PANASONIC)
8048SCT-ND or
EVQ-PJS04K
(NORCOMP)
SHUNTS, 2MM
P1
(3M)
TRANSISTOR,
FMMT3904CT,SMD,S0T-23
DIODE, LL4148CT-ND, SMD,
PACKAGE DL-35
IC., TPA1517NE, AUDIO
AMPLIFIER, 2 CHANNEL,20 PIN
DIP
PCB, TPA1517NE SAMPLE EVM
Q1,Q2
D1,D2
(ZETEX)
FMMT3904CT-ND
LL4148CT-ND
U1
(TI) TPA1517NE
1
PCB1
(COMPUROUTE)
TOOL #008451
1
R3, R4, R9
R7, R10
R5, R6
R8
R11
S3
3
2
2
1
1
1
1
2
2
15
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