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MAX9730
2.4W, Single-Supply Class G Power Amplifier
Highest Output Power Speaker Amplifier From a Battery
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Status
Active: In Production.
Description
The MAX9730 features a mono Class G power amplifier with an integrated inverting charge-pump power supply. The charge pump can supply up to 500mA of peak output current over a 2.7VDC to 5.5VDC supply voltage range, guaranteeing up to 2.4W output power into an 8Ω load. The 2.4W output power allows for transient audio content to remain unclipped as the battery rail collapses over time.
The MAX9730 maximizes battery life by offering high-performance efficiency. Maxim's proprietary output stage provides efficiency levels greater than Class AB devices without the EMI penalties commonly associated with Class D amplifiers. High efficiency allows the MAX9730 to be packaged in a WLP package without derating the output power handling capability.
The device utilizes fully differential inputs and outputs, comprehensive click-and-pop suppression, shutdown control, and soft-start circuitry. The MAX9730 is fully specified over the -40°C to +85°C extended temperature range and is available in ultra-small, lead-free, 20-bump WLP (2mm x 2.5mm) and 28-pin TQFN (4mm x 4mm) packages.
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Data Sheet
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An evaluation kit is available: MAX9730EVKIT
Key Features
- 2.7V to 5.5V Operation
- Integrated Charge-Pump Power Supply
- 63% Efficiency (VCC = 5V, POUT = 1W)
- 2.4W Output Power into 8Ω at VCC = 5V
- Clickless/Popless Operation
- Small Thermally Efficient Packages
- 2mm x 2.5mm 20-Bump WLP
- 4mm x 4mm 28-Pin TQFN
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Applications/Uses
- Cellular Phones
- Handheld Gaming Consoles
- MP3 Players
- Notebook Computers
- Personal Media Players
- Smartphones
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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 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 |
A- Weighted |
min |
min |
max |
See Notes |
| MAX9730 |
Boosted/G |
2.7 |
5.5 |
8 |
2.4 |
2.8 |
0.07 |
95 |
77 |
No |
4 |
4 |
1 |
$0.62 @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
Simplified 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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| MAX9730ETI+
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Active |
TQFN;28 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0035 (PDF)
Use pkgcode/variation: T2844+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9730ETI+T
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Active |
TQFN;28 pin;16.8 mm²
Outline Drawing:21-0139 (PDF)
Land Pattern: 90-0035 (PDF)
Use pkgcode/variation: T2844+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX9730EWP+TG45
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Active |
WLP;20 pin;WLP;
Outline Drawing:21-0059 (PDF)
Land Pattern: Not Available
Use pkgcode/variation: W202A2+1*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
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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Similar Products by Function
| MAX9705 |
2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier |
| MAX9788 |
14VP-P, Class G Ceramic Speaker Driver |
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More Information
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Information Index
Document Ref.: 19-0701
Rev 5;
2010-04-01
This page last modified: 2011-09-08
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