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MAX9716EUA+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
General Description
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.
Applications
Features
o 2.7V to 5.5V Single-Supply Operation
o 1.4W into 4Ω at 1% THD+N
o 10nA Low-Power Shutdown Mode
o 73dB PSRR at 1kHz
o No Audible Clicks or Pops at Power-Up/Down
o Internal Fixed Gain to Reduce Component Count
(MAX9717B/C/D)
o Adjustable Gain Option (MAX9716/MAX9717A)
o BTL /SE Input Senses when Headphones are
Connected (MAX9717)
o Pin Compatible with LM4890 (MAX9716)
o Pin Compatible with TPA711 (MAX9717A)
o Available in Compact, Thermally Enhanced µMAX
and TDFN (3mm x 3mm) Packages
MAX9716/MAX9717
Low-Cost, Mono, 1.4W BTL Audio
Power Amplifiers
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
V
CC
BTL/SE
BIAS
IN-
MAX9717B/C/D
SINGLE SUPPLY
2.7V TO 5.5V
BIAS
IN-
MAX9716
SINGLE SUPPLY
2.7V TO 5.5V
Simplified Block Diagrams
19-3146; Rev 3; 3/12
Pin Configurations and Selector Guide appear at end of data
sheet.
EVALUATION KIT
AVAILABLE
UCSP is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
*
EP = Exposed pad.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
G45 indicates protective die coating.
/V denotes automotive qualified part.
PART TEMP RANGE
PIN-
PACKAGE
GAIN
(dB)
MAX9716ETA+T -40°C to +85°C 8 TDFN-EP* Adj.
MAX9716EBL+TG45 -40°C to +85°C 3 x 3 UCSP Adj.
MAX9716EUA -40°C to +85°C 8 µMAX-EP* Adj.
MAX9716EUA/V+ -40°C to +85°C 8 µMAX-EP* Adj.
Ordering Information continued at end of data sheet.
Mobile Phones
PDAs
Portable Devices
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
MAX9716/MAX9717
Low-Cost, Mono, 1.4W BTL Audio
Power Amplifiers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—5V Supply
(V
CC
= 5V, V
GND
= 0V, SHDN = V
CC
, T
A
= +25°C. C
BIAS
= 1µF, R
IN
= R
F
= 20kΩ (MAX9716/MAX9717A), IN+ = BIAS (MAX9716),
BTL/SE = GND (MAX9717_), R
L
= ∞ connected between OUT+ and OUT-. Typical values are at T
A
= +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage (V
CC
to GND) ..................................-0.3V to +6V
Any Other Pin to GND ...............................-0.3V to (V
CC
+ 0.3V)
IN_, BIAS, SHDN, BTL/SE Continuous Current...................20mA
OUT_ Short-Circuit Duration to GND or V
CC
(Note 1)...Continuous
Continuous Power Dissipation (T
A
= +70°C)
8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
8-Pin µMAX (derate 10.3mW/°C above +70°C) ...........825mW
9-Bump UCSP (derate 5.2mW/°C above 70°C)...........412mW
Operating Temperature Range ..........................-40°C to +85°C
Maximum Junction Temperature ....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow)
Lead(Pb)-Free Packages..............................................+260°C
Packages Containing Lead(Pb)....................................+240°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
CC
Inferred by PSRR test 2.7 5.5 V
Quiescent Supply Current I
CC
V
IN-
= V
IN+
= V
BIAS
(Note 3),
T
A
= -40°C to +85°C
4.3 8 mA
Shutdown Supply Current I
SHDN
SHDN = GND 0.01 1 µA
V
IH
1.2
SHDN Threshold
V
IL
0.4
V
V
IH
0.9 x
V
CC
BTL/SE Threshold
V
IL
0.7 x
V
CC
V
Common-Mode Bias Voltage V
BIAS
(Note 4)
V
CC
/2
- 6%
V
CC
/2
V
CC
/2
+ 6%
V
Output Offset Voltage V
OS
V
IN-
= V
OUT+
, V
IN+
= V
BIAS
(Note 5) ±7 ±15 mV
V
CC
= 2.7V to 5.5V DC, V
BIAS
= 1.5V 60 80
f = 217Hz 61
Power-Supply Rejection Ratio PSRR
V
IN+
= V
BIAS
,
V
RIPPLE
= 200mV
P-P
,
R
L
= 8Ω (Note 6)
f = 1kHz 73
dB
R
L
= 8Ω, THD+N = 1%, f
IN
= 1kHz (Note 7) 0.8 1.1
R
L
= 4Ω, THD+N = 1%, f
IN
= 1kHz (Note 7) 1.4
Output Power P
OUT
R
L
= 16Ω, BTL/SE = V
CC
(single-ended
mode), THD+N = 1%, f
IN
= 1kHz
0.155
W
Total Harmonic Distortion Plus
Noise
THD+N
A
V
= 6dB, R
L
= 8Ω, f
IN
= 1kHz,
P
OUT
= 0.5W (Note 8)
0.024 %
Output Noise Density e
n
f
IN
= 10kHz 106 nV/√Hz
Signal-to-Noise Ratio SNR THD+N = 1% 105 dB
MAX9716/MAX9717
Low-Cost, Mono, 1.4W BTL Audio
Power Amplifiers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—5V Supply (continued)
(V
CC
= 5V, V
GND
= 0V, SHDN = V
CC
, T
A
= +25°C. C
BIAS
= 1µF, R
IN
= R
F
= 20kΩ (MAX9716/MAX9717A), IN+ = BIAS (MAX9716),
BTL/SE = GND (MAX9717_), R
L
= ∞ connected between OUT+ and OUT-. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Short-Circuit Current Limit I
SC
(Note 9) 1.1 A
Thermal Shutdown Threshold +160 °C
Thermal Shutdown Hysteresis 15 °C
250
Power-Up/Enable from Shutdown
Time (Note 10)
t
PU
C
BIAS
= 0.1µF 25
ms
Shutdown Time t
SHDN
5µs
Input Resistance R
IN
MAX9717B/C/D 12 20 28 kΩ
ELECTRICAL CHARACTERISTICS—3V Supply
(V
CC
= 3V, V
GND
= 0V, SHDN = V
CC
, T
A
= +25°C. C
BIAS
= 1µF, R
IN
= R
F
= 20kΩ (MAX9716/MAX9717A), IN+ = BIAS (MAX9716),
BTL/SE = GND (MAX9717_), R
L
= ∞ connected between OUT+ and OUT-. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Quiescent Supply Current I
CC
V
IN-
= V
IN+
= V
BIAS
(Note 3),
T
A
= -40°C to +85°C
4 8.0 mA
Shutdown Supply Current I
SHDN
SHDN = GND 0.01 1 µA
V
IH
1.2
SHDN Threshold
V
IL
0.4
V
V
IH
0.9 x
V
CC
BTL/SE Threshold
V
IL
0.7 x
V
CC
V
Common-Mode Bias Voltage V
BIAS
(Note 4)
V
CC
/2
- 9%
V
CC
/2
V
CC
/2
+ 9%
V
Output Offset Voltage V
OS
V
IN-
= V
OUT+
, V
IN+
= V
BIAS
(Note 5) ±7 ±15 mV
f = 217Hz 61
Power-Supply Rejection Ratio PSRR
V
IN+
= V
BIAS
,
V
RIPPLE
= 200mV
P-P
,
R
L
= 8Ω (Note 6)
f = 1kHz 73
dB
R
L
= 8Ω, THD+N = 1%, f
IN
= 1kHz (Note 7) 350
Output Power P
OUT
R
L
= 4Ω, THD+N = 1%, f
IN
= 1kHz (Note 7) 525
mW
Total Harmonic Distortion Plus
Noise
THD+N
A
V
= 6dB, R
L
= 8Ω, f
IN
= 1kHz,
P
OUT
= 0.5W, V
CC
= 3V (Note 8)
0.024 %
Output-Noise Density e
n
f
IN
= 10kHz 106 nV/√Hz
Signal-to-Noise Ratio SNR THD+N = 1% 100 dB
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

MAX9716EUA+T

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Manufacturer:
Maxim Integrated
Description:
Audio Amplifiers Mono 1.4W BTL Audio Power Amp
Lifecycle:
New from this manufacturer.
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