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MAX9703, MAX9704
10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers
10W Stereo/15W Mono Class-D Amplifier Ideal for Flat-Panel TV and PC-Display Applications
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Status
Active: In Production.
Description
The MAX9703/MAX9704 mono/stereo Class D audio power amplifiers provide Class AB amplifier performance with Class D efficiency, conserving board space and eliminating the need for a bulky heatsink. Using a Class D architecture, these devices deliver up to 15W while offering up to 78% efficiency. Modulation and switching schemes render the traditional Class D output filter unnecessary.
The MAX9703/MAX9704 offer two modulation schemes: a fixed-frequency mode (FFM), and a spread-spectrum mode (SSM) that reduces EMI-radiated emissions due to the modulation frequency. The device utilizes a fully differential architecture, a full bridged output, and comprehensive click-and-pop suppression.
The MAX9703/MAX9704 feature high 80dB PSRR, low 0.07% THD+N, and SNR in excess of 95dB. Short-circuit and thermal-overload protection prevent the devices from being damaged during a fault condition. The MAX9703 is available in a 32-pin TQFN (5mm x 5mm x 0.8mm) package. The MAX9704 is available in a 32-pin TQFN (7mm x 7mm x 0.8mm) package. Both devices are specified over the extended -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX9714EVKIT
Key Features
- Filterless Class D Amplifier
- Unique Spread-Spectrum Mode Offers 5dB Emissions Improvement Over Conventional Methods
- Up to 78% Efficient (RL = 8Ω)
- Up to 88% Efficient (RL = 16Ω)
- 15W Continuous Output Power into 8Ω (MAX9703)
- 2x10W Continuous Output Power into 8Ω (MAX9704)
- Low 0.07% THD+N
- High PSRR (80dB at 1kHz)
- 10V to 25V Single-Supply Operation
- Differential Inputs Minimize Common-Mode Noise
- Pin-Selectable Gain Reduces Component Count
- Industry-Leading Click-and-Pop Suppression
- Low Quiescent Current (24mA)
- Low-Power Shutdown Mode (0.2μA)
- Short-Circuit and Thermal-Overload Protection
- Available in Thermally Efficient, Space-Saving Packages
- 32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703
- 32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704
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Applications/Uses
- Automotive
- Desktop PCs
- Hands-Free Car Phone Adapters
- LCD Monitors
- LCD Projectors
- LCD TVs
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Key Specifications:
| Speaker Amplifiers |
| Part Number |
Class |
Spkr. Amp. VCC
(V) |
Spkr. Amp. VCC
(V) |
Spkr. Amp. ICC
(mA) |
POUT into 4Ω @ 1% THD+N
(W) |
POUT into 4Ω @ 10% THD+N
(W) |
POUT into 8Ω @ 1% THD+N
(W) |
POUT into 8Ω @ 10% THD+N
(W) |
Spkr. Amp. Half Pwr. THD+N
(%) |
SNR
(dB) |
PSRR
(dB) |
Spkr. Amp. Ext. Gain |
Spkr. Amp. Fxd. Gain
(V/V) |
Spkr. Amp. Fxd. Gain
(V/V) |
Channels |
Budgetary Price |
| min |
max |
typ |
min |
min |
min |
min |
A- Weighted |
min |
min |
max |
See Notes |
| MAX9703 |
D |
10 |
25 |
14 |
7 |
10 |
11 |
15 |
0.015 |
97 |
80 |
No |
4.5 |
30 |
1 |
$1.25 @1k |
| MAX9704 |
24 |
4 |
5 |
8 |
10 |
0.02 |
2 |
$1.95 @1k |
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See All Speaker Amplifiers (41)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Block Diagram
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX9703DEVBRD
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Active |
KIT;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX9703ETJ
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0012 (PDF)
Use pkgcode/variation: T3255-4*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9703ETJ+
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0012 (PDF)
Use pkgcode/variation: T3255+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9703ETJ+T
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0012 (PDF)
Use pkgcode/variation: T3255+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9703ETJ-T
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Active |
QFN;32 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX9704ETJ
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Active |
TQFN;32 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0125 (PDF)
Use pkgcode/variation: T3277-2*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX9704ETJ+
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Active |
TQFN;32 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0125 (PDF)
Use pkgcode/variation: T3277+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9704ETJ+T
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Active |
TQFN;32 pin;50.4 mm²
Outline Drawing:21-0144 (PDF)
Land Pattern: 90-0125 (PDF)
Use pkgcode/variation: T3277+2*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9704ETJ-T
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Active |
QFN;32 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-3160
Rev 7;
2006-03-28
This page last modified: 2011-01-04
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