MAX9716EBL-T Maxim Integrated Products, MAX9716EBL-T Datasheet

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MAX9716EBL-T

Manufacturer Part Number
MAX9716EBL-T
Description
MAX9716EBL-TLow-Cost, Mono, 1.4W BTL Audio Power Amplifiers
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX9716EBL-T.pdf (19 pages)
The MAX9716/MAX9717 audio power amplifiers are ideal
for portable audio devices with internal speakers. A
bridge-tied load (BTL) architecture minimizes external
component count, while providing high-quality audio
reproduction. Both devices deliver 1.4W continuous
power into a 4Ω load with less than 1% Total Harmonic
Distortion (THD) while operating from a single +5V sup-
ply. With an 8Ω load, both devices deliver 1W continuous
power. These devices also deliver 350mW continuous
power into an 8Ω load while operating from a single
+3.0V supply. The devices are available as adjustable
gain amplifiers (MAX9716/MAX9717A) or with internally
fixed gains of 6dB, 9dB, and 12dB (MAX9717B/
MAX9717C/MAX9717D), reducing component count.
A low-power shutdown mode disables the bias generator
and amplifiers, reducing quiescent current consumption
to less than 10nA. These devices feature Maxim’s
industry-leading, comprehensive click-and-pop sup-
pression that reduces audible clicks and pops during
startup and shutdown.
The MAX9717 features a headphone sense input (BTL/SE)
that senses when a headphone is connected to the
device, disables the BTL slave driver, muting the speaker
while driving the headphone as a single-ended load.
The MAX9716 is pin compatible with the LM4890 and is
available in 9-bump UCSP™, 8-pin TDFN (3mm x
3mm), and 8-pin µMAX packages. The MAX9717 is
available in 9-bump UCSP, 8-pin TDFN, and 8-pin
µMAX packages. Both devices operate over the -40°C
to +85°C extended temperature range.
19-3146; Rev 0; 1/04
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Mobile Phones
PDAs
Portable Devices
________________________________________________________________ Maxim Integrated Products
IN-
Low-Cost, Mono, 1.4W BTL Audio Power
General Description
BIAS
SINGLE SUPPLY
2.7V TO 5.5V
Applications
MAX9716
♦ 2.7V to 5.5V Single-Supply Operation
♦ 1.4W into 4Ω at 1% THD+N
♦ 10nA Low-Power Shutdown Mode
♦ 73dB PSRR at 1kHz
♦ No Audible Clicks or Pops at Power-Up/Down
♦ Internal Fixed Gain to Reduce Component Count
♦ Adjustable Gain Option (MAX9716/MAX9717A)
♦ BTL /SE Input Senses when Headphones are
♦ Pin Compatible with LM4890 (MAX9716)
♦ Pin Compatible with TPA711 (MAX9717A)
♦ Available in Compact, Thermally Enhanced µMAX
Ordering Information continued at end of data sheet.
Pin Configurations and Selector Guide appear at end of data
sheet.
*Future product—contact factory for availability.
**EP = Exposed paddle.
IN-
MAX9716ETA
MAX9716EBL-T*
MAX9716EUA
(MAX9717B/C/D)
Connected (MAX9717)
and TDFN (3mm x 3mm) Packages
PART
BIAS
SINGLE SUPPLY
2.7V TO 5.5V
MAX9717B/C/D
Simplified Block Diagrams
BTL/SE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
V
CC
Amplifiers
PIN-
PACKAGE
8 TDFN-EP**
3 x 3 UCSP
8 µMAX-EP**
Features
GAIN
(dB)
Adj.
Adj.
Adj.
1

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MAX9716EBL-T Summary of contents

Page 1

... Pin Compatible with LM4890 (MAX9716) ♦ Pin Compatible with TPA711 (MAX9717A) ♦ Available in Compact, Thermally Enhanced µMAX and TDFN (3mm x 3mm) Packages PART MAX9716ETA MAX9716EBL-T* MAX9716EUA *Future product—contact factory for availability. **EP = Exposed paddle. Ordering Information continued at end of data sheet. Applications Pin Configurations and Selector Guide appear at end of data sheet ...

Page 2

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to GND) ..................................-0.3V to +6V CC Any Other Pin to GND ...............................-0. IN_, BIAS, SHDN, BTL/SE Continuous Current...................20mA OUT_ Short-Circuit Duration to GND or V ...

Page 3

Low-Cost, Mono, 1.4W BTL Audio Power ELECTRICAL CHARACTERISTICS—5V Supply (continued) = 5V, GND = 0, SHDN = ∞ connected between OUT+ and OUT-. Typical values are at T BTL/SE = GND (MAX9717_), ...

Page 4

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers ELECTRICAL CHARACTERISTICS—3V Supply (continued) = 3V, GND = 0, SHDN = +25° ∞ connected between OUT+ and OUT-. Typical values are at T ...

Page 5

Low-Cost, Mono, 1.4W BTL Audio Power (V = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, BTL mode TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 100 8Ω 6dB 10 ...

Page 6

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers (V = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, BTL mode TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER 100 8Ω ...

Page 7

Low-Cost, Mono, 1.4W BTL Audio Power (V = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, BTL mode OUTPUT POWER vs. SUPPLY VOLTAGE 1 8Ω 1kHz 1 6dB V 1.2 THD+N ...

Page 8

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers (V = 5V, THD+N measurement bandwidth = 22Hz to 22kHz, BTL mode GAIN AND PHASE vs. FREQUENCY 120 A = 60dB -30 -60 -90 -120 10 ...

Page 9

Low-Cost, Mono, 1.4W BTL Audio Power PIN BUMP TDFN/µMAX UCSP MAX9716 MAX9717 MAX9716 MAX9717 — B1 — ...

Page 10

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers +1 -1 Figure 1. Bridge-Tied Load Configuration Applications Information The MAX9716/MAX9717 are designed to drive a load differentially, a configuration referred to as bridge-tied load or BTL. The BTL configuration (Figure 1) offers ...

Page 11

Low-Cost, Mono, 1.4W BTL Audio Power BIAS IN+ MAX9716 AUDIO IN- INPUT R Figure 2. Setting the MAX9716/MAX9717A Gain Gain-Setting Resistors External feedback resistors set the gain of the MAX9716 and MAX9717A. Resistors R Figure 2) ...

Page 12

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers 220pF 0.33µF 20kΩ AUDIO INPUT 0.33µF 20kΩ AUDIO INPUT VALUES SHOWN FOR 0dB GAIN. Figure 4. MAX9716 Differential Input BIAS is the output of the ...

Page 13

Low-Cost, Mono, 1.4W BTL Audio Power UCSP Applications Information For the latest application details on UCSP construction, dimensions, tape carrier information, printed circuit board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability ...

Page 14

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers TOP VIEW SHDN 1 BIAS 2 MAX9716 IN+ 3 IN- 4 µMAX MAX9716 TOP VIEW 1 (BUMPS ON BOTTOM) A IN- B GND C BIAS UCSP (1.5mm x 1.5mm) SHDN 1 BIAS 2 ...

Page 15

Low-Cost, Mono, 1.4W BTL Audio Power Functional Diagrams/Typical Operating Circuits 1µF BIAS C BIAS 1µF IN 0.33µF 20kΩ AUDIO IN- INPUT VALUES SHOWN FOR 12dB GAIN 1µ BIAS C BIAS 1µF C ...

Page 16

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers Functional Diagrams/Typical Operating Circuits (continued) 1µF BIAS C BIAS 1µ 0.33µF 20kΩ AUDIO IN- INPUT 16 ______________________________________________________________________________________ CLICKLESS/POPLESS SHDN SHUTDOWN CONTROL OUT- 20kΩ IN+ 20kΩ ...

Page 17

Low-Cost, Mono, 1.4W BTL Audio Power (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Amplifiers Package Information 17 ...

Page 18

Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages PIN 1 INDEX AREA COMMON DIMENSIONS SYMBOL MIN. ...

Page 19

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ___________________ 19 © 2004 Maxim Integrated Products ...

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