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MAX13330, MAX13331
Automotive DirectDrive® Headphone Amplifiers with Output Protection and Diagnostics
Industry's First Automotive Headphone Amplifiers with Output Protection Up to 45V and Short-Circuit Diagnostics
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Status
Active: In Production.
Description
The MAX13330/MAX13331 stereo headphone amplifiers are designed for automotive applications requiring output short-circuit and ESD protection to battery/ground with diagnostics. These devices use Maxim's unique DirectDrive architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving board space and component height. The gain of the amplifier is set internally (-1.5V/V) on the MAX13330 or adjusted externally with resistors on the MAX13331.
The MAX13330/MAX13331 deliver 120mW per channel into a 16Ω load or 135mW into a 32Ω load and have a low 0.01% THD+N. Low output impedance and the efficient integrated charge pump allows the device to drive loads as low as 8Ω, enabling the use of small loudspeakers. An 80dB at 217Hz PSRR allows these devices to operate from noisy digital supplies without an additional linear regulator. These devices include ±15kV Human Body Model ESD protection and short-circuit protection up to +45V at the headphone outputs. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup and shutdown. A low-power shutdown mode reduces the supply current to 3µA (typ).
The MAX13330/MAX13331 are specified from -40°C to +105°C AEC-Q100 Level 2 automotive temperature range and are available in a 16-pin QSOP package.
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Data Sheet
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An evaluation kit is available: MAX13331EVKIT
Key Features
- 4V to 5.5V Single-Supply Operation
- 2MHz Charge Pump Prevents AM Radio Interference
- Ground-Referenced Outputs Eliminate Bulky DC-Blocking Capacitors
- Short-to-Ground and Battery (VBAT up to +45V) Output Protection, Load Dump Protection
- Short-Circuit Diagnostic Output
- Adjustable Gain (MAX13331) or Fixed -1.5V/V Gain (MAX13330)
- 125mW per Channel into 32Ω at 0.01% THD+N
- Integrated Click-and-Pop Suppression
- High PSRR Eliminates LDO
- No Degradation of Low-Frequency Response Due to Output Capacitors
- ±15kV Human Body Model ESD Protection for Output Pins
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Applications/Uses
- Automotive Entertainment Systems
- Automotive Rear Seat Entertainment Systems
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Key Specifications:
| Headphone Amplifiers |
| Part Number |
Hdph. Amp. VCC
(V) |
Hdph. Amp. VCC
(V) |
Hdph. Amp. ICC
(mA) |
Hdph. Amp. POUT into 32Ω
(mW) |
Hdph. Amp. Half Pwr. THD+N
(%) |
SNR
(dB) |
PSRR
(dB) |
Hdph. Amp. Ext. Gain |
Hdph. Amp. Fxd. Gain
(|V/V|) |
Hdph. Amp. Fxd. Gain
(|V/V|) |
Features |
Industry Qualified |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| min |
max |
typ |
@ 1% THD+N |
A- Weighted |
min |
min |
max |
max w/pins |
See Notes |
| MAX13330 |
4 |
5.5 |
10 |
135 |
0.014 |
100 |
86 |
No |
1.5 |
1.5 |
| ±15kV Human Body Model ESD Protection | | 2MHz Charge Pump, 8-Ohm Load | | Output Protection and Diagnostics |
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| Automotive - AECQ100 | | Automotive - General |
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30.9 |
$0.92 @1k |
| MAX13331 |
Yes |
- |
- |
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$0.92 @1k |
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See All Headphone Amplifiers (18)
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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
Typical Application Circuits
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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| MAX13330GEE/V+
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Active |
QSOP;16 pin;30.9 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+4*
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-40°C to +105°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX13330GEE/V+T
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Active |
QSOP;16 pin;30.9 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+4*
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-40°C to +105°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX13331GEE/V+
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Active |
QSOP;16 pin;30.9 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+1*
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-40°C to +105°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX13331GEE/V+T
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Active |
QSOP;16 pin;30.9 mm²
Outline Drawing:21-0055 (PDF)
Land Pattern: 90-0167 (PDF)
Use pkgcode/variation: E16+1*
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-40°C to +105°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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Information Index
Document Ref.: 19-4341
Rev 3;
2011-07-25
This page last modified: 2011-07-25
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